Add a simple tnameserv so that we don't have to start the external tnameserv

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@672418 13f79535-47bb-0310-9956-ffa450edef68

6 files changed, 1689 insertions, 0 deletions

diff --git a/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/NamingContextBase.java b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/NamingContextBase.java
new file mode 100644
index 0000000000..aae7bbecd7
--- /dev/null
+++ b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/NamingContextBase.java
@@ -0,0 +1,863 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+*  contributor license agreements.  See the NOTICE file distributed with
+*  this work for additional information regarding copyright ownership.
+*  The ASF licenses this file to You under the Apache License, Version 2.0
+*  (the "License"); you may not use this file except in compliance with
+*  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @version $Rev$ $Date$
+ */
+
+package org.apache.tuscany.sca.host.corba.naming;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.omg.CORBA.BAD_PARAM;
+import org.omg.CORBA.CompletionStatus;
+import org.omg.CORBA.ORB;
+import org.omg.CORBA.SystemException;
+import org.omg.CosNaming.BindingType;
+import org.omg.CosNaming.BindingTypeHolder;
+import org.omg.CosNaming.NameComponent;
+import org.omg.CosNaming.NamingContext;
+import org.omg.CosNaming.NamingContextExtPOA;
+import org.omg.CosNaming.NamingContextHelper;
+import org.omg.CosNaming.NamingContextExtPackage.InvalidAddress;
+import org.omg.CosNaming.NamingContextPackage.AlreadyBound;
+import org.omg.CosNaming.NamingContextPackage.InvalidName;
+import org.omg.CosNaming.NamingContextPackage.NotFound;
+import org.omg.CosNaming.NamingContextPackage.NotFoundReason;
+import org.omg.PortableServer.POA;
+
+public abstract class NamingContextBase extends NamingContextExtPOA {
+    // the real logger backing instance.  We use the interface class as the locator
+    protected static final Logger logger = Logger.getLogger(NamingContext.class.getName());
+
+    // set of URL characters that don't require escaping when encoded.
+    protected final String nonEscaped = ";/?:@&=+$;-_.!~* ()";
+    // the orb we're attached to
+    protected ORB orb;
+    // the poa we're associated with
+    protected POA poa;
+
+    /**
+     * Create a new base NamingContext (super class constructor
+     * for the derived classes).
+     *
+     * @param orb    The ORB this is hosted on.
+     *
+     * @exception java.lang.Exception
+     */
+    public NamingContextBase(ORB orb, POA poa) throws java.lang.Exception {
+        super();
+        this.orb = orb;
+        this.poa = poa;
+    }
+
+    /**
+     * Bind an object to a given name.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     * @param obj    The object to be bound.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public void bind(org.omg.CosNaming.NameComponent[] n, org.omg.CORBA.Object obj)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed,
+        org.omg.CosNaming.NamingContextPackage.InvalidName, org.omg.CosNaming.NamingContextPackage.AlreadyBound {
+        // perform various name validations
+        validateName(n);
+
+        logNameComponent("bind() name", n);
+
+        // do we need to push through to a deeper naming context first?
+        if (n.length > 1) {
+            // resolve the top level name to a context, and have that context
+            // resolve the rest.
+            NamingContext context = resolveContext(n[0]);
+            NameComponent[] subName = extractSubName(n);
+
+            // now pass this along to the next context for the real bind operation.
+            context.bind(subName, obj);
+        } else {
+            NameComponent name = n[0];
+            // we need the resolveObject() and bindObject() calls to be consistent, so
+            // synchronize on this
+            synchronized (this) {
+                // see if we have this bound already...can't replace these.
+                BindingTypeHolder type = new BindingTypeHolder();
+                if (resolveObject(name, type) != null) {
+                    throw new AlreadyBound();
+                }
+                type.value = BindingType.nobject;
+                // ok, this is a new binding, go do it.
+                bindObject(name, obj, type);
+            }
+        }
+    }
+
+    /**
+     * Rebind an object to a given name.  If an object is
+     * already bound with this name, the new object replaces
+     * the bound object's value.  If no object has been
+     * bound already, this is the same as a bind operation.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     * @param obj    The new value for this binding.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public void rebind(org.omg.CosNaming.NameComponent[] n, org.omg.CORBA.Object obj)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed,
+        org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // perform various name validations
+        validateName(n);
+
+        logNameComponent("rebind() name", n);
+
+        // do we need to push through to a deeper naming context first?
+        if (n.length > 1) {
+            // resolve the top level name to a context, and have that context
+            // resolve the rest.
+            NamingContext context = resolveContext(n[0]);
+            NameComponent[] subName = extractSubName(n);
+
+            // now pass this along to the next context for the real bind operation.
+            context.rebind(subName, obj);
+        } else {
+            NameComponent name = n[0];
+            // we need the resolveObject() and bindObject() calls to be consistent, so
+            // synchronize on this
+            synchronized (this) {
+                // see if we have this bound already...can't replace these.
+                BindingTypeHolder type = new BindingTypeHolder();
+                // for a rebind, we must have an object, and it must be a real object
+                if (resolveObject(name, type) != null) {
+                    // it has to resolve to a real object.  If it is a naming context,
+                    // then this is the wrong binding operation.
+                    if (type.value.value() == BindingType._ncontext) {
+                        throw new NotFound(NotFoundReason.not_object, n);
+                    }
+                    // safe to unbind
+                    unbindObject(name);
+                }
+                type.value = BindingType.nobject;
+                // now bind this object
+                bindObject(name, obj, type);
+            }
+        }
+    }
+
+    /**
+     * Bind a new context to a given name.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     * @param nc     The new naming context added to the tree.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public void bind_context(org.omg.CosNaming.NameComponent[] n, org.omg.CosNaming.NamingContext nc)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed,
+        org.omg.CosNaming.NamingContextPackage.InvalidName, org.omg.CosNaming.NamingContextPackage.AlreadyBound {
+        // perform various name validations
+        validateName(n);
+
+        logNameComponent("bind_context() name", n);
+
+        // do we need to push through to a deeper naming context first?
+        if (n.length > 1) {
+            // resolve the top level name to a context, and have that context
+            // resolve the rest.
+            NamingContext context = resolveContext(n[0]);
+            NameComponent[] subName = extractSubName(n);
+
+            // now pass this along to the next context for the real bind operation.
+            context.bind_context(subName, nc);
+        } else {
+            NameComponent name = n[0];
+            // we need the resolveObject() and bindObject() calls to be consistent, so
+            // synchronize on this
+            synchronized (this) {
+                // see if we have this bound already...can't replace these.
+                BindingTypeHolder type = new BindingTypeHolder();
+                if (resolveObject(name, type) != null) {
+                    throw new AlreadyBound();
+                }
+                type.value = BindingType.ncontext;
+                // ok, this is a new binding, go do it.
+                bindObject(name, nc, type);
+            }
+        }
+    }
+
+    /**
+     * Rebind a context to a given name.  If a context is
+     * already bound with this name, the new context replaces
+     * the existing context.  If no context has been
+     * bound already, this is the same as a bind operation.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     * @param nc     The new context to be bound with the name.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public void rebind_context(org.omg.CosNaming.NameComponent[] n, org.omg.CosNaming.NamingContext nc)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed,
+        org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // perform various name validations
+        validateName(n);
+
+        logNameComponent("rebind_context() name", n);
+
+        // do we need to push through to a deeper naming context first?
+        if (n.length > 1) {
+            // resolve the top level name to a context, and have that context
+            // resolve the rest.
+            NamingContext context = resolveContext(n[0]);
+            NameComponent[] subName = extractSubName(n);
+
+            // now pass this along to the next context for the real bind operation.
+            context.rebind_context(subName, nc);
+        } else {
+            NameComponent name = n[0];
+            // we need the resolveObject() and bindObject() calls to be consistent, so
+            // synchronize on this
+            synchronized (this) {
+                // see if we have this bound already...can't replace these.
+                BindingTypeHolder type = new BindingTypeHolder();
+                // for a rebind, we must have an object, and it must be a real object
+                if (resolveObject(name, type) != null) {
+                    // it has to resolve to a real object.  If it is a naming context,
+                    // then this is the wrong binding operation.
+                    if (type.value.value() != BindingType._ncontext) {
+                        throw new NotFound(NotFoundReason.not_context, n);
+                    }
+                    // safe to unbind
+                    unbindObject(name);
+                }
+                type.value = BindingType.ncontext;
+                // now bind this object
+                bindObject(name, nc, type);
+            }
+        }
+    }
+
+    /**
+     * Resolve an an entry in the context tree.  The
+     * resolved object may be a bound object or another
+     * NamingContext.  If the named entry is not found,
+     * a NotFound exception is thrown.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     *
+     * @return The object bound at the indicated location.
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public org.omg.CORBA.Object resolve(org.omg.CosNaming.NameComponent[] n)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed,
+        org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // perform various name validations
+        validateName(n);
+
+        logNameComponent("resolve() name", n);
+
+        // do we need to push through to a deeper naming context first?
+        if (n.length > 1) {
+            // resolve the top level name to a context, and have that context
+            // resolve the rest.
+            NamingContext context = resolveContext(n[0]);
+            NameComponent[] subName = extractSubName(n);
+
+            // now pass this along to the next context for the real bind operation.
+            return context.resolve(subName);
+        } else {
+            NameComponent name = n[0];
+            // see if we have this bound already...can't replace these.
+            BindingTypeHolder type = new BindingTypeHolder();
+            org.omg.CORBA.Object obj = resolveObject(name, type);
+            if (obj == null) {
+                // Object was not found
+                throw new NotFound(NotFoundReason.missing_node, n);
+            }
+            return obj;
+        }
+    }
+
+    /**
+     * Remove an entry from the context tree.  The
+     * target object may be a bound object or another
+     * NamingContext.  If the named entry is not found,
+     * a NotFound exception is thrown.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public void unbind(org.omg.CosNaming.NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound,
+        org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // perform various name validations
+        validateName(n);
+
+        logNameComponent("unbind() name", n);
+
+        // do we need to push through to a deeper naming context first?
+        if (n.length > 1) {
+            // resolve the top level name to a context, and have that context
+            // resolve the rest.
+            NamingContext context = resolveContext(n[0]);
+            NameComponent[] subName = extractSubName(n);
+
+            // now pass this along to the next context for the real bind operation.
+            context.unbind(subName);
+        } else {
+            NameComponent name = n[0];
+            synchronized (this) {
+                // see if we have this bound already...can't replace these.
+                BindingTypeHolder type = new BindingTypeHolder();
+                org.omg.CORBA.Object obj = unbindObject(name);
+                if (obj == null) {
+                    // Object was not found
+                    throw new NotFound(NotFoundReason.missing_node, n);
+                }
+            }
+        }
+    }
+
+    /**
+     * Create a new context and bind it in at the target
+     * location.
+     *
+     * @param n      An array of NameComponents that are the target name.
+     *               The last element in the array is binding name for the
+     *               object.  The remainder of the array is the path
+     *               for resolving the naming context, relative to the
+     *               current context.  All path contexts must already be
+     *               bound in the context tree.
+     *
+     * @return The newly created context.
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
+     */
+    public synchronized org.omg.CosNaming.NamingContext bind_new_context(org.omg.CosNaming.NameComponent[] n)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.AlreadyBound,
+        org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
+        logNameComponent("bind_new_context() name", n);
+
+        NamingContext context = new_context();
+        try {
+            bind_context(n, context);
+            NamingContext returnContext = context;
+            // transfer this to another variable so the finally block doesn't try to destroy this.
+            context = null;
+            return returnContext;
+        } finally {
+            // if there is a bind failure on this, we need to ensure the context has
+            // an opportunity to clean up any of its resources.
+            if (context != null) {
+                try {
+                    context.destroy();
+                } catch (org.omg.CosNaming.NamingContextPackage.NotEmpty e) {
+                    // new contexts should be empty.
+                }
+            }
+        }
+    }
+
+    /**
+     * Convert an array of NameComponents into the string
+     * form of a context name.
+     *
+     * @param n      The array of NameComponents to convert.
+     *
+     * @return The context name, in string form.
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     */
+    public String to_string(org.omg.CosNaming.NameComponent[] n)
+        throws org.omg.CosNaming.NamingContextPackage.InvalidName {
+        validateName(n);
+
+        logNameComponent("to_string() name", n);
+
+        // convert the first part of the name
+        StringBuffer value = new StringBuffer();
+        ;
+        // convert the first component, then build up from there.
+        nameToString(n[0], value);
+
+        // the remainder need to get a separator
+        for (int i = 1; i < n.length; i++) {
+            value.append('/');
+            nameToString(n[i], value);
+        }
+        return value.toString();
+    }
+
+    /**
+     * Perform the reverse operation of the to_string() method,
+     * parsing a String context name into an array of
+     * NameComponents.
+     *
+     * @param sn     The string form of the name.
+     *
+     * @return An array of NameComponents parsed from the String name.
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     */
+    public org.omg.CosNaming.NameComponent[] to_name(String sn)
+        throws org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // must have a argument to parse
+        if (sn == null || sn.length() == 0) {
+            throw new InvalidName();
+        }
+
+        List components = new ArrayList();
+
+        StringBuffer component = new StringBuffer();
+
+        int index = 0;
+        String id = null;
+        String kind = null;
+        while (index < sn.length()) {
+            char ch = sn.charAt(index++);
+
+            // found an escape character or a delimiter?
+            if (ch == '\\') {
+                // nothing after the escape?  Trouble
+                if (index >= sn.length()) {
+                    throw new InvalidName();
+                }
+                // get the next character
+                ch = sn.charAt(index++);
+                component.append(ch);
+            }
+            // we need to process the periods here, to avoid getting
+            // mixed up with unescaped periods.
+            else if (ch == '.') {
+                // already seen a period while scanning?  That's not allowed
+                if (id != null) {
+                    throw new InvalidName();
+                }
+                // pull off the id piece and reset the buffer
+                id = component.toString();
+                component.setLength(0);
+            }
+            // found a component delimiter?
+            else if (ch == '/') {
+                // not seen a id/kind separator yet?  This is an id with no kind
+                if (id == null) {
+                    id = component.toString();
+                    kind = "";
+                } else {
+                    // we have an id already, pull off the kind
+                    kind = component.toString();
+                }
+                // add the parsed name component
+                components.add(new NameComponent(id, kind));
+                // make sure these are all reset after pulling off a component
+                component.setLength(0);
+                id = null;
+                kind = null;
+            } else {
+                component.append(ch);
+            }
+        }
+
+        // parse the last section
+        // not seen a id/kind separator yet?  This is an id with no kind
+        if (id == null) {
+            id = component.toString();
+            kind = "";
+        } else {
+            // we have an id already, pull off the kind
+            kind = component.toString();
+        }
+        // add the parsed name component
+        components.add(new NameComponent(id, kind));
+
+        // and turn this into a component array
+        return (NameComponent[])components.toArray(new NameComponent[components.size()]);
+    }
+
+    /**
+     * Create a URL name for accessing a component by name.  The
+     * URL will have a corbaname: protocol.
+     *
+     * @param addr   The address location for the naming service used
+     *               to resolve the object.  This is in "host:port" form,
+     *               just line a corbaloc: URL.
+     * @param sn     The string mae of the target object.
+     *
+     * @return A URL for accessing this object, in String form.
+     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidAddress
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     */
+    public String to_url(String addr, String sn) throws org.omg.CosNaming.NamingContextExtPackage.InvalidAddress,
+        org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // basic validation
+        if (addr == null || addr.length() == 0) {
+            throw new InvalidAddress();
+        }
+
+        if (sn == null || sn.length() == 0) {
+            throw new InvalidName();
+        }
+
+        // TODO:  What validation, if any, needs to be done here?
+        return "corbaname:" + addr + "#" + encodeRFC2396Name(sn);
+    }
+
+    /**
+     * Resolve a bound object or context using a name
+     * in String form.
+     *
+     * @param n      The string name of the object context.  This must
+     *               be a form parseable by to_name().
+     *
+     * @return The bound object or context.
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
+     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName
+     */
+    public org.omg.CORBA.Object resolve_str(String n) throws org.omg.CosNaming.NamingContextPackage.NotFound,
+        org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
+        // this is just a simple convenience method
+        return resolve(to_name(n));
+    }
+
+    // abstract methods that are part of the NamingContext interface that need to be
+    // implemented by the subclasses.
+
+    /**
+     * Create a new context of the same type as the
+     * calling context.
+     *
+     * @return A new NamingContext item.
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception SystemException
+     */
+    public abstract org.omg.CosNaming.NamingContext new_context() throws SystemException;
+
+    /**
+     * Destroy a context.  This method should clean up
+     * any backing resources associated with the context.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotEmpty
+     */
+    public abstract void destroy() throws org.omg.CosNaming.NamingContextPackage.NotEmpty;
+
+    /**
+     * Create a list of bound objects an contexts contained
+     * within this context.
+     *
+     * @param how_many The count of elements to return as a BindingList.
+     * @param bl       A holder element for returning the source binding list.
+     * @param bi       A holder for returning a BindingIterator.  Any extra
+     *                 elements not returned in the BindingList are returned
+     *                 in the BindingIterator.
+     *
+     * @exception SystemException
+     */
+    public abstract void list(int how_many,
+                              org.omg.CosNaming.BindingListHolder bl,
+                              org.omg.CosNaming.BindingIteratorHolder bi) throws SystemException;
+
+    // abstract methods for the sub class to implement
+
+    /**
+     * Resolve an object in this context (single level
+     * resolution).
+     *
+     * @param n      The name of the target object.
+     * @param type   A type holder for returning the bound object type
+     *               information.
+     *
+     * @return The bound object.  Returns null if the object does not
+     *         exist in the context.
+     * @exception SystemException
+     */
+    protected abstract org.omg.CORBA.Object resolveObject(NameComponent n, BindingTypeHolder type)
+        throws SystemException;
+
+    /**
+     * Bind an object into the current context.  This can
+     * be either an object or a naming context.
+     *
+     * @param n      The single-level name of the target object.
+     * @param obj    The object or context to be bound.
+     * @param type
+     *
+     * @exception SystemException
+     */
+    protected abstract void bindObject(NameComponent n, org.omg.CORBA.Object obj, BindingTypeHolder type)
+        throws SystemException;
+
+    /**
+     * Unbind an object from the current context.
+     *
+     * @param n      The name of the target object (single level).
+     *
+     * @return The object associated with the binding.  Returns null
+     *         if there was no binding currently associated with this
+     *         name.
+     * @exception SystemException
+     */
+    protected abstract org.omg.CORBA.Object unbindObject(NameComponent n) throws SystemException;
+
+    // implementation specific routines
+
+    /**
+     * Resolve a name to a context object stored that has
+     * already been stored in this context.  Throws an exception
+     * if the name cannot be resolved or if the resolved
+     * object is not a naming context.
+     *
+     * @param name   The target name.
+     *
+     * @return The resolved NamingContext object.
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     */
+    protected synchronized NamingContext resolveContext(NameComponent name)
+        throws org.omg.CosNaming.NamingContextPackage.NotFound {
+        BindingTypeHolder type = new BindingTypeHolder();
+        // Resolve this to an object.  We must be able to resolve this.
+        org.omg.CORBA.Object resolvedReference = resolveObject(name, type);
+        if (resolvedReference == null) {
+            throw new NotFound(NotFoundReason.missing_node, new NameComponent[] {name});
+        }
+
+        // it has to resolve to a naming context
+        if (type.value.value() != BindingType._ncontext) {
+            throw new NotFound(NotFoundReason.not_context, new NameComponent[] {name});
+        }
+
+        // in theory, this is a naming context.  Narrow it an return.  Any
+        // errors just become a NotFound exception
+        try {
+            return NamingContextHelper.narrow(resolvedReference);
+        } catch (org.omg.CORBA.BAD_PARAM ex) {
+            throw new NotFound(NotFoundReason.not_context, new NameComponent[] {name});
+        }
+    }
+
+    /**
+     * Extract the tail portion of a name.  This is used
+     * to strip off the first name element so we can recurse
+     * on the name resolutions with a resolved context.
+     *
+     * @param name   The current name array (this MUST have 2 or more
+     *               elements).
+     *
+     * @return An array of NameComponent items that is one element
+     *         smaller than the argument array, with the elements
+     *         shifted over.
+     */
+    protected NameComponent[] extractSubName(NameComponent[] name) {
+        NameComponent[] subName = new NameComponent[name.length - 1];
+        System.arraycopy(name, 1, subName, 0, name.length - 1);
+        return subName;
+    }
+
+    /**
+     * Perform common name validity checking.
+     *
+     * @param n      The NameComponent array to check.
+     *
+     * @exception InvalidName
+     */
+    protected void validateName(NameComponent[] n) throws InvalidName {
+        // perform various name validations
+        if (n == null) {
+            throw new BAD_PARAM(27 | org.omg.CORBA.OMGVMCID.value, CompletionStatus.COMPLETED_NO);
+        }
+
+        // Valid name?
+        if (n.length < 1) {
+            throw new InvalidName();
+        }
+
+        // we have at least one name, so validate the toplevel item
+        NameComponent name = n[0];
+
+        // more name validation
+        if (name.id.length() == 0 && name.kind.length() == 0) {
+            throw new InvalidName();
+        }
+    }
+
+    /**
+     * Convert a NameComponent item into a string form,
+     * appending it to a StringBuffer.
+     *
+     * @param name   The source NameComponent.
+     * @param out    The StringBuffer location used to store the name
+     *               value (appended to the end).
+     */
+    protected void nameToString(NameComponent name, StringBuffer out) {
+        // if the id is null, then we base off of the kind.
+        if (name.id == null || name.id.length() == 0) {
+            out.append(".");
+            // true null name element?  That displays as a "."
+            if (name.kind != null && name.kind.length() != 0) {
+                escapeName(name.kind, out);
+            }
+        } else {
+            // escape the name
+            escapeName(name.id, out);
+            // have a kind qualifier to add on?
+            if (name.kind != null && name.kind.length() != 0) {
+                out.append(".");
+                escapeName(name.kind, out);
+            }
+        }
+    }
+
+    /**
+     * Process a name or kind element of a NameComponent,
+     * adding escape characters for '.' or '/' characters
+     * that might appear in the name.
+     *
+     * @param name   The name element to process.
+     * @param out    The StringBuffer to copy the escaped name into.
+     */
+    protected void escapeName(String name, StringBuffer out) {
+        // no characters requiring escapes (common)?
+        // use this directly
+        if (name.indexOf('.') == -1 && name.indexOf('/') == -1) {
+            out.append(name);
+        } else {
+            // scan the string adding the escapes
+            for (int i = 0; i < name.length(); i++) {
+                char ch = name.charAt(i);
+                if (ch == '.' || ch == '/') {
+                    out.append('/');
+                }
+                out.append(ch);
+            }
+        }
+    }
+
+    /**
+     * Perform RFC 2396 escape encoding of a name value.
+     *
+     * @param name   The input name value.
+     *
+     * @return An encoded name, with special characters converted
+     *         into a hex encoded value.
+     */
+    protected String encodeRFC2396Name(String name) {
+        StringBuffer value = new StringBuffer();
+
+        for (int i = 0; i < name.length(); i++) {
+            char ch = name.charAt(i);
+
+            // Alphanumerics and the "acceptable" set of special characters just get copied
+            // without encoding.
+            if (Character.isLetterOrDigit(ch) || nonEscaped.indexOf(ch) != -1) {
+                value.append(ch);
+            } else {
+                // this gets converted into a hex value, marked by "%".
+                value.append('%');
+                value.append(Integer.toHexString((int)ch));
+            }
+        }
+        return value.toString();
+    }
+
+    /**
+     * Test if debug logging is currently available.
+     *
+     * @return True if debug level (FINE) logging is currently turned on.
+     */
+    protected boolean isDebugEnabled() {
+        return logger.isLoggable(Level.FINE);
+    }
+
+    /**
+     * Log a line of debug output
+     *
+     * @param message The message to log
+     */
+    protected void debug(String message) {
+        logger.fine(message);
+    }
+
+    /**
+     * Log the name components passed in for a request.
+     *
+     * @param message A message describing the request context.
+     * @param n       The array of name components.
+     */
+    protected void logNameComponent(String message, NameComponent[] n) {
+        if (isDebugEnabled()) {
+            debug(message);
+            for (int i = 0; i < n.length; i++) {
+                debug("   NameComponent " + i + " id=" + n[i].id + " kind=" + n[i].kind);
+            }
+        }
+    }
+
+}
diff --git a/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNameServer.java b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNameServer.java
new file mode 100644
index 0000000000..4b975fbfba
--- /dev/null
+++ b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNameServer.java
@@ -0,0 +1,140 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+*  contributor license agreements.  See the NOTICE file distributed with
+*  this work for additional information regarding copyright ownership.
+*  The ASF licenses this file to You under the Apache License, Version 2.0
+*  (the "License"); you may not use this file except in compliance with
+*  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @version $Rev$ $Date$
+ */
+package org.apache.tuscany.sca.host.corba.naming;
+
+import org.omg.CORBA.ORB;
+
+/**
+ * A stand-alone naming service launchable from a command line.
+ */
+public class TransientNameServer {
+    private final TransientNameService service;
+    private final Object flag = new Object();
+    private Boolean started;
+
+    public TransientNameServer(String host, int port, String serviceName) {
+        this.service = new TransientNameService(host, port, serviceName);
+    }
+
+    public ORB getORB() {
+        return service.getORB();
+    }
+
+    public Thread start() {
+        Thread t = new Thread() {
+            public void run() {
+                ORB orb = null;
+                synchronized (flag) {
+                    try {
+                        service.run();
+                        orb = service.createdOrb;
+                        started = Boolean.TRUE;
+                    } catch (Throwable e) {
+                        started = Boolean.FALSE;
+                        throw new IllegalStateException(e);
+                    } finally {
+                        flag.notifyAll();
+                    }
+                }
+                orb.run();
+                /*
+                // now we just sit and wait here.
+                synchronized (service) {
+                    try {
+                        service.wait();
+                    } catch (InterruptedException e) {
+                        throw new IllegalStateException(e);
+                    }
+                }
+                */
+            }
+        };
+        t.start();
+        checkState();
+        return t.isAlive() ? t : null;
+    }
+
+    private Boolean checkState() {
+        synchronized (flag) {
+            while (started == null) {
+                try {
+                    flag.wait();
+                } catch (InterruptedException e) {
+                    return null;
+                }
+            }
+            return started;
+        }
+    }
+
+    public void stop() {
+        if (started == Boolean.TRUE) {
+            service.destroy();
+        }
+    }
+
+    /**
+     * Launch a name service as a stand alone process.  The
+     * Host, port, and service name are controlled using
+     * program arguments.
+     *
+     * @param args   The array of arguments for tailoring the service.
+     *
+     * @exception Exception
+     */
+    public static void main(String args[]) throws Exception {
+        int port = TransientNameService.DEFAULT_SERVICE_PORT;
+        String host = TransientNameService.DEFAULT_SERVICE_HOST;
+        String serviceName = TransientNameService.DEFAULT_SERVICE_NAME;
+
+        // see if we have
+        for (int i = 0; i < args.length; i++) {
+            if (args[i].equals("-ORBInitialPort")) {
+                i++;
+                if (i < args.length) {
+                    port = java.lang.Integer.parseInt(args[i]);
+                } else {
+                    throw new IllegalArgumentException("Invalid -ORBInitialPort option");
+                }
+            } else if (args[i].equals("-ORBInitialHost")) {
+                i++;
+                if (i < args.length) {
+                    host = args[i];
+                } else {
+                    throw new IllegalArgumentException("Invalid -ORBInitialHost option");
+                }
+            } else if (args[i].equals("-ORBServiceName")) {
+                i++;
+                if (i < args.length) {
+                    serviceName = args[i];
+                } else {
+                    throw new IllegalArgumentException("Invalid -ORBServiceName option");
+                }
+            }
+
+        }
+        // create a services, and just spin it off.  We wait forever after that.
+        TransientNameServer server = new TransientNameServer(host, port, serviceName);
+        server.start().join();
+    }
+
+}
diff --git a/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNameService.java b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNameService.java
new file mode 100644
index 0000000000..cf99fa908c
--- /dev/null
+++ b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNameService.java
@@ -0,0 +1,182 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+*  contributor license agreements.  See the NOTICE file distributed with
+*  this work for additional information regarding copyright ownership.
+*  The ASF licenses this file to You under the Apache License, Version 2.0
+*  (the "License"); you may not use this file except in compliance with
+*  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @version $Rev$ $Date$
+ */
+package org.apache.tuscany.sca.host.corba.naming;
+
+import java.lang.reflect.Method;
+import java.util.Properties;
+
+import org.omg.CORBA.ORB;
+import org.omg.CORBA.Policy;
+import org.omg.PortableServer.IdAssignmentPolicyValue;
+import org.omg.PortableServer.LifespanPolicyValue;
+import org.omg.PortableServer.POA;
+import org.omg.PortableServer.ServantRetentionPolicyValue;
+
+/**
+ * A transient name service attached to an ORB.  This
+ * class manages all of the housekeeping for creating a
+ * TransientNamingContext and a exposing it using an
+ * ORB.
+ */
+public class TransientNameService {
+    // the default registered name service
+    static public final String DEFAULT_SERVICE_NAME = "TNameService";
+    // the default listening port
+    static public final int DEFAULT_SERVICE_PORT = 900;
+    // the default host name
+    static public final String DEFAULT_SERVICE_HOST = "localhost";
+
+    // the service root context
+    protected TransientNamingContext initialContext;
+    // initial listening port
+    protected int port;
+    // initial listening host
+    protected String host;
+    // the service name (used for registing for the corbaloc:: URL name
+    protected String serviceName;
+    // the orb instance we're running on
+    protected ORB createdOrb;
+
+
+    /**
+     * Create a new TransientNameService, using all default
+     * attributes.
+     */
+    public TransientNameService() {
+        this(DEFAULT_SERVICE_HOST, DEFAULT_SERVICE_PORT, DEFAULT_SERVICE_NAME);
+    }
+
+    /**
+     * Create a default-named name service using the specified
+     * host and port parameters.
+     *
+     * @param host   The host to expose this under.
+     * @param port   The initial listening port.
+     */
+    public TransientNameService(String host, int port) {
+        this(host, port, DEFAULT_SERVICE_NAME);
+    }
+
+    /**
+     * Create a specifically-named name service using the specified
+     * host and port parameters.
+     *
+     * @param host   The host to expose this under.
+     * @param port   The initial listening port.
+     * @param name   The name to register this service under using the
+     *               BootManager.
+     */
+    public TransientNameService(String host, int port, String name) {
+        this.port = port;
+        this.host = host;
+        this.serviceName = name;
+    }
+
+    /**
+     * Start up the name service, including creating an
+     * ORB instance to expose it under.
+     *
+     * @exception TransientServiceException
+     */
+    public void run() throws TransientServiceException {
+        // Create an ORB object
+        Properties props = new Properties();
+        props.putAll(System.getProperties());
+
+        String portStr = String.valueOf(port);
+        props.put("org.omg.CORBA.ORBServerId", "1000000");
+        props.put("org.omg.CORBA.ORBInitialHost", host);
+        props.put("org.omg.CORBA.ORBInitialPort", portStr);
+        
+        // STEP 1: Set ORBPeristentServerPort property
+        // Set the proprietary property to open up a port to listen to
+        // INS requests. 
+
+        props.put("com.sun.CORBA.POA.ORBPersistentServerPort", portStr);
+        props.put("com.ibm.CORBA.ListenerPort", portStr);
+        props.put("gnu.CORBA.ListenerPort", portStr);
+        //        props.put("org.omg.CORBA.ORBClass", "org.apache.yoko.orb.CORBA.ORB");
+        //        props.put("org.omg.CORBA.ORBSingletonClass", "org.apache.yoko.orb.CORBA.ORBSingleton");
+        props.put("yoko.orb.oa.endpoint", "iiop --host " + host + " --port " + port);
+        props.put("yoko.orb.poamanager.TNameService.endpoint", "iiop --host " + host);
+
+        String[] args = {"-ORBInitialHost", host, "-ORBInitialPort", "" + port};
+        createdOrb = ORB.init(args, props);
+
+        // now initialize the service
+        initialize(createdOrb);
+        
+    }
+
+    /**
+     * Initialize a transient name service on a specific
+     * ORB.
+     *
+     * @param orb    The ORB hosting the service.
+     *
+     * @exception TransientServiceException
+     */
+    public void initialize(ORB orb) throws TransientServiceException {
+        try {
+            // get the root POA.  We're going to re
+            POA rootPOA = (POA)orb.resolve_initial_references("RootPOA");
+            rootPOA.the_POAManager().activate();
+
+            // we need to create a POA to manage this named instance, and then activate
+            // a context on it.
+            Policy[] policy = new Policy[3];
+            policy[0] = rootPOA.create_lifespan_policy(LifespanPolicyValue.TRANSIENT);
+            policy[1] = rootPOA.create_id_assignment_policy(IdAssignmentPolicyValue.SYSTEM_ID);
+            policy[2] = rootPOA.create_servant_retention_policy(ServantRetentionPolicyValue.RETAIN);
+
+            POA nameServicePOA = rootPOA.create_POA("TNameService", null, policy);
+            nameServicePOA.the_POAManager().activate();
+
+            // create our initial context, and register that with the ORB as the name service
+            initialContext = new TransientNamingContext(orb, nameServicePOA);
+            org.omg.CORBA.Object context = initialContext.getRootContext();
+            Method method =
+                orb.getClass().getMethod("register_initial_reference", String.class, org.omg.CORBA.Object.class);
+            method.invoke(orb, serviceName, context);
+            method.invoke(orb, "NamingService", context);
+            method.invoke(orb, "NameService", context);
+        } catch (Exception e) {
+            throw new TransientServiceException("Unable to initialize name service", e);
+        }
+    }
+
+    /**
+     * Destroy the created service.
+     */
+    public void destroy() {
+        // only destroy this if we created the orb instance.
+        if (createdOrb != null) {
+            createdOrb.destroy();
+            createdOrb = null;
+        }
+    }
+    
+    public ORB getORB() {
+        return createdOrb;
+    }
+
+}
diff --git a/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNamingContext.java b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNamingContext.java
new file mode 100644
index 0000000000..236bf6de90
--- /dev/null
+++ b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientNamingContext.java
@@ -0,0 +1,440 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @version $Rev$ $Date$
+ */
+
+package org.apache.tuscany.sca.host.corba.naming;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+
+import org.omg.CORBA.INTERNAL;
+import org.omg.CORBA.ORB;
+import org.omg.CORBA.SystemException;
+import org.omg.CosNaming.Binding;
+import org.omg.CosNaming.BindingHolder;
+import org.omg.CosNaming.BindingIteratorHelper;
+import org.omg.CosNaming.BindingIteratorPOA;
+import org.omg.CosNaming.BindingType;
+import org.omg.CosNaming.BindingTypeHolder;
+import org.omg.CosNaming.NameComponent;
+import org.omg.CosNaming.NamingContext;
+import org.omg.CosNaming.NamingContextHelper;
+import org.omg.CosNaming.NamingContextPackage.NotEmpty;
+import org.omg.PortableServer.POA;
+
+public class TransientNamingContext extends NamingContextBase {
+    // the bindings maintained by this context
+    protected HashMap bindings = new HashMap();
+    // the root context object
+    protected org.omg.CORBA.Object rootContext = null;
+
+    /**
+     * Create a top-level naming context.
+     *
+     * @param orb    The orb hosting this context.
+     * @param poa    The POA used to activate the object.
+     *
+     * @exception Exception
+     */
+    public TransientNamingContext(ORB orb, POA poa) throws Exception {
+        this(orb, poa, null);
+        // now get the initial root context as a corba object.
+
+        byte[] objectId = poa.activate_object(this);
+        rootContext = poa.id_to_reference(objectId);
+
+    }
+
+    /**
+     * Construct a TransientNamingContext subcontext.
+     *
+     * @param orb    The orb this context is associated with.
+     * @param poa    The POA the root context is activated under.
+     * @param root   The root context.
+     *
+     * @exception Exception
+     */
+    public TransientNamingContext(ORB orb, POA poa, org.omg.CORBA.Object root) throws Exception {
+        super(orb, poa);
+        // save the root context link.
+        rootContext = root;
+    }
+
+    // abstract methods part of the interface contract that the implementation is required
+    // to supply.
+
+    /**
+     * Create a new context of the same type as the
+     * calling context.
+     *
+     * @return A new NamingContext item.
+     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
+     * @exception SystemException
+     */
+    public NamingContext new_context() throws SystemException {
+        try {
+            // create a new context.  Then we need to register this with the POA and activate it.
+            TransientNamingContext newContext = new TransientNamingContext(orb, poa, rootContext);
+
+            byte[] objectId = poa.activate_object(newContext);
+            org.omg.CORBA.Object obj = poa.id_to_reference(objectId);
+            return NamingContextHelper.narrow(obj);
+        } catch (SystemException e) {
+            // just propagate system exceptions
+            throw e;
+        } catch (Exception e) {
+            throw (INTERNAL)(new INTERNAL("Unable to create new naming context").initCause(e));
+        }
+    }
+
+    /**
+     * Destroy a context.  This method should clean up
+     * any backing resources associated with the context.
+     *
+     * @exception org.omg.CosNaming.NamingContextPackage.NotEmpty
+     */
+    public synchronized void destroy() throws org.omg.CosNaming.NamingContextPackage.NotEmpty {
+        // still holding bound objects?  Not allowed to destroy
+        if (!bindings.isEmpty()) {
+            throw new NotEmpty();
+        }
+
+        try {
+            // now detach ourselves from the POA
+            byte[] objectId = poa.servant_to_id(this);
+            if (objectId != null) {
+                poa.deactivate_object(objectId);
+            }
+        } catch (Exception e) {
+            // ignore
+        }
+    }
+
+    /**
+     * Create a list of bound objects an contexts contained
+     * within this context.
+     *
+     * @param how_many The count of elements to return as a BindingList.
+     * @param bl       A holder element for returning the source binding list.
+     * @param bi       A holder for returning a BindingIterator.  Any extra
+     *                 elements not returned in the BindingList are returned
+     *                 in the BindingIterator.
+     *
+     * @exception SystemException
+     */
+    public synchronized void list(int how_many,
+                                  org.omg.CosNaming.BindingListHolder bl,
+                                  org.omg.CosNaming.BindingIteratorHolder bi) throws SystemException {
+        TransientBindingIterator iterator = new TransientBindingIterator(poa, (HashMap)bindings.clone());
+        // have the iterator fill in the entries here
+        iterator.next_n(how_many, bl);
+
+        // now it's necessary to activate this iterator with the poa.  The value we pass
+        // back is the narrowed activated object
+        try {
+            byte[] objectId = poa.activate_object(iterator);
+            org.omg.CORBA.Object obj = poa.id_to_reference(objectId);
+
+            bi.value = BindingIteratorHelper.narrow(obj);
+        } catch (SystemException e) {
+            // just propagate system exceptions
+            throw e;
+        } catch (Exception e) {
+            throw (INTERNAL)(new INTERNAL("Unable to activate BindingIterator").initCause(e));
+        }
+    }
+
+    // lower level functions that are used by the base class
+
+    /**
+     * Resolve an object in this context (single level
+     * resolution).
+     *
+     * @param n      The name of the target object.
+     * @param type   A type holder for returning the bound object type
+     *               information.
+     *
+     * @return The bound object.  Returns null if the object does not
+     *         exist in the context.
+     * @exception SystemException
+     */
+    protected org.omg.CORBA.Object resolveObject(NameComponent n, BindingTypeHolder type) throws SystemException {
+        // special call to resolve the root context.  This is the only one that goes backwards.
+        if (n.id.length() == 0 && n.kind.length() == 0) {
+            // this is a name context item, so set it properly.
+            type.value = BindingType.ncontext;
+            return rootContext;
+        }
+
+        BindingKey key = new BindingKey(n);
+        BoundObject obj = (BoundObject)bindings.get(key);
+        // if not in the table, just return null
+        if (obj == null) {
+            return null;
+        }
+        // update the type information and return the bound object reference.
+        type.value = obj.type;
+        return obj.boundObject;
+    }
+
+    /**
+     * Bind an object into the current context.  This can
+     * be either an object or a naming context.
+     *
+     * @param n      The single-level name of the target object.
+     * @param obj    The object or context to be bound.
+     * @param type
+     *
+     * @exception SystemException
+     */
+    protected void bindObject(NameComponent n, org.omg.CORBA.Object obj, BindingTypeHolder type) throws SystemException {
+        // fairly simple table put...
+        bindings.put(new BindingKey(n), new BoundObject(n, obj, type.value));
+    }
+
+    /**
+     * Unbind an object from the current context.
+     *
+     * @param n      The name of the target object (single level).
+     *
+     * @return The object associated with the binding.  Returns null
+     *         if there was no binding currently associated with this
+     *         name.
+     * @exception SystemException
+     */
+    protected org.omg.CORBA.Object unbindObject(NameComponent n) throws SystemException {
+        //remove the object from the hash table, returning the bound object if it exists.
+        BindingKey key = new BindingKey(n);
+        BoundObject obj = (BoundObject)bindings.remove(key);
+
+        if (obj != null) {
+            return obj.boundObject;
+        }
+        return null;
+    }
+
+    /**
+     * Retrieve the rootContext for this NamingContext.
+     *
+     * @return The rootContext CORBA object associated with this context.
+     */
+    public org.omg.CORBA.Object getRootContext() {
+        return rootContext;
+    }
+
+    /**
+     * Internal class used for HashMap lookup keys.
+     */
+    class BindingKey {
+        // the name component this is a HashMap key for.
+        public NameComponent name;
+        private int hashval = 0;
+
+        /**
+         * Create a new BindingKey for a NameComponent.
+         *
+         * @param n      The lookup name.
+         */
+        public BindingKey(NameComponent n) {
+            name = n;
+            // create a hash value used for lookups
+            if (name.id != null) {
+                hashval += name.id.hashCode();
+            }
+            if (name.kind != null) {
+                hashval += name.kind.hashCode();
+            }
+        }
+
+        /**
+         * Return the hashcode associated with this binding key.  The
+         * hashcode is created using the NameComponent id and
+         * kind fields.
+         *
+         * @return The lookup hashvalue associated with this key.
+         */
+        public int hashCode() {
+            return hashval;
+        }
+
+        /**
+         * Compare two BindingKeys for equality (used for HashMap
+         * lookups).
+         *
+         * @param other  The comparison partner.
+         *
+         * @return True if the keys are equivalent, false otherwise.
+         */
+        public boolean equals(Object other) {
+            // if not given or the wrong type, this is false.
+            if (other == null || !(other instanceof BindingKey)) {
+                return false;
+            }
+
+            BindingKey otherKey = (BindingKey)other;
+
+            // verify first on the id name.
+            if (name.id != null) {
+                if (otherKey.name.id == null) {
+                    return false;
+                }
+                if (!name.id.equals(otherKey.name.id)) {
+                    return false;
+                }
+            } else {
+                if (otherKey.name.id != null) {
+                    return false;
+                }
+            }
+            // this is a match so far...now compare the kinds
+            if (name.kind != null) {
+                if (otherKey.name.kind == null) {
+                    return false;
+                }
+                if (!name.kind.equals(otherKey.name.kind)) {
+                    return false;
+                }
+            } else {
+                if (otherKey.name.kind != null) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    }
+
+    /**
+     * Internal class used to store bound objects in the HashMap.
+     */
+    public class BoundObject {
+        // the name this object is bound under.
+        public NameComponent name;
+        // the type of binding (either nobject or ncontext).
+        public BindingType type;
+        // the actual bound object.
+        public org.omg.CORBA.Object boundObject;
+
+        /**
+         * Create a new object binding for our HashMap.
+         *
+         * @param name   The bound object's name.
+         * @param boundObject
+         *               The bound object (real object or NamingContext).
+         * @param type   The type information associated with this binding.
+         */
+        public BoundObject(NameComponent name, org.omg.CORBA.Object boundObject, BindingType type) {
+            this.name = name;
+            this.boundObject = boundObject;
+            this.type = type;
+        }
+    }
+
+    /**
+     * Context implementation version of the BindingIterator
+     * object used to return list items.
+     */
+    public class TransientBindingIterator extends BindingIteratorPOA {
+        // the POA used to activate this object (required for destroy();
+        private POA poa;
+        // the binding set we're iterating over (this must be a snapshot copy)
+        private HashMap bindings;
+        // the iterator use to access the bindings
+        private Iterator iterator;
+
+        /**
+         * Create a new BindingIterator hosted by the given POA and
+         * iterating over the map of items.
+         *
+         * @param poa      The hosting POA.
+         * @param bindings The HashMap of bound objects.
+         */
+        public TransientBindingIterator(POA poa, HashMap bindings) {
+            this.poa = poa;
+            this.bindings = bindings;
+            this.iterator = bindings.values().iterator();
+        }
+
+        /**
+         * Return the next object in the iteration sequence.
+         *
+         * @param b      The BindingHolder used to return the next item.  If
+         *               we've reached the end of the sequence, an item
+         *               with an empty name is returned.
+         *
+         * @return true if there is another item, false otherwise.
+         */
+        public boolean next_one(org.omg.CosNaming.BindingHolder b) {
+            if (iterator.hasNext()) {
+                // return this as a Binding value.
+                BoundObject obj = (BoundObject)iterator.next();
+                b.value = new Binding(new NameComponent[] {obj.name}, obj.type);
+                return true;
+            } else {
+                // return an empty element
+                b.value = new Binding(new NameComponent[0], BindingType.nobject);
+                return false;
+            }
+        }
+
+        /**
+         * Retrieve the next "n" items from the list, returned
+         * as a BindingList.
+         *
+         * @param how_many The count of items to retrieve.
+         * @param bl       A holder for returning an array of Bindings for
+         *                 the returned items.
+         *
+         * @return true if any items were returned, false if there's
+         *         nothing left to return.
+         */
+        public boolean next_n(int how_many, org.omg.CosNaming.BindingListHolder bl) {
+            List accum = new ArrayList();
+            BindingHolder holder = new BindingHolder();
+            int i = 0;
+            // Keep iterating as long as there are entries
+            while (i < how_many && next_one(holder)) {
+                accum.add(holder.value);
+                i++;
+            }
+
+            // convert to an array and return whether we found anything.
+            bl.value = (Binding[])accum.toArray(new Binding[accum.size()]);
+            return accum.isEmpty();
+        }
+
+        /**
+         * Destory this BindingIterator instance, which deativates
+         * it from the hosting POA.
+         */
+        public void destroy() {
+            try {
+                // we need to deactivate this from the POA.
+                byte[] objectId = poa.servant_to_id(this);
+                if (objectId != null) {
+                    poa.deactivate_object(objectId);
+                }
+            } catch (Exception e) {
+            }
+        }
+    }
+}
diff --git a/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientServiceException.java b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientServiceException.java
new file mode 100644
index 0000000000..4c1e9c33f1
--- /dev/null
+++ b/java/sca/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/naming/TransientServiceException.java
@@ -0,0 +1,38 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+*  contributor license agreements.  See the NOTICE file distributed with
+*  this work for additional information regarding copyright ownership.
+*  The ASF licenses this file to You under the Apache License, Version 2.0
+*  (the "License"); you may not use this file except in compliance with
+*  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @version $Rev$ $Date$
+ */
+package org.apache.tuscany.sca.host.corba.naming;
+
+public class TransientServiceException extends Exception {
+
+    public TransientServiceException() {
+        super();
+    }
+
+    public TransientServiceException(String reason) {
+        super(reason);
+    }
+
+    public TransientServiceException(String reason, Exception cause) {
+        super(reason, cause);
+    }
+
+}
diff --git a/java/sca/modules/host-corba/src/test/java/org/apache/tuscany/sca/host/corba/testing/DefaultCorbaHostTestCase.java b/java/sca/modules/host-corba/src/test/java/org/apache/tuscany/sca/host/corba/testing/DefaultCorbaHostTestCase.java
index 5b9167122f..2c7a308769 100644
--- a/java/sca/modules/host-corba/src/test/java/org/apache/tuscany/sca/host/corba/testing/DefaultCorbaHostTestCase.java
+++ b/java/sca/modules/host-corba/src/test/java/org/apache/tuscany/sca/host/corba/testing/DefaultCorbaHostTestCase.java
@@ -28,6 +28,8 @@ import java.io.IOException;
 import org.apache.tuscany.sca.host.corba.CorbaHost;
 import org.apache.tuscany.sca.host.corba.CorbaHostException;
 import org.apache.tuscany.sca.host.corba.DefaultCorbaHost;
+import org.apache.tuscany.sca.host.corba.naming.TransientNameServer;
+import org.apache.tuscany.sca.host.corba.naming.TransientNameService;
 import org.apache.tuscany.sca.host.corba.testing.general.TestInterface;
 import org.apache.tuscany.sca.host.corba.testing.general.TestInterfaceHelper;
 import org.apache.tuscany.sca.host.corba.testing.servants.TestInterfaceServant;
@@ -87,6 +89,7 @@ public class DefaultCorbaHostTestCase {
         }
     }
 
+    /*
     @BeforeClass
     public static void start() {
         try {
@@ -102,6 +105,29 @@ public class DefaultCorbaHostTestCase {
     public static void stop() {
         killProcess(tn);
     }
+    */
+    
+    private static TransientNameServer server;
+
+    @BeforeClass
+    public static void start() {
+        try {
+            server = new TransientNameServer(LOCALHOST, DEFAULT_PORT, TransientNameService.DEFAULT_SERVICE_NAME);
+            Thread t = server.start();
+            if (t == null) {
+                fail("The naming server cannot be started");
+            }
+            host = new DefaultCorbaHost();
+        } catch (Throwable e) {
+            e.printStackTrace();
+            fail(e.getMessage());
+        }
+    }
+
+    @AfterClass
+    public static void stop() {
+        server.stop();
+    }
 
     /**
      * Tests registering, getting and unregistering CORBA object