Copying modules from Equinox branch, to start merging the delta changes from 1.x/original trunk

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@718815 13f79535-47bb-0310-9956-ffa450edef68

15 files changed, 899 insertions, 0 deletions

diff --git a/java/sca/modules/workspace/LICENSE b/java/sca/modules/workspace/LICENSE
new file mode 100644
index 0000000000..8aa906c321
--- /dev/null
+++ b/java/sca/modules/workspace/LICENSE
@@ -0,0 +1,205 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      "License" shall mean the terms and conditions for use, reproduction,
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+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
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+      the Work or Derivative Works thereof, You may choose to offer,
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
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+
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+
+      To apply the Apache License to your work, attach the following
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+   Licensed 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.
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+   limitations under the License.
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+
+
diff --git a/java/sca/modules/workspace/META-INF/MANIFEST.MF b/java/sca/modules/workspace/META-INF/MANIFEST.MF
new file mode 100644
index 0000000000..e9a9bf0742
--- /dev/null
+++ b/java/sca/modules/workspace/META-INF/MANIFEST.MF
@@ -0,0 +1,28 @@
+Manifest-Version: 1.0

+Export-Package: org.apache.tuscany.sca.workspace;uses:="org.apache.tus

+ cany.sca.contribution";version="1.4",org.apache.tuscany.sca.workspace

+ .builder;uses:="org.apache.tuscany.sca.workspace,org.apache.tuscany.s

+ ca.core,org.apache.tuscany.sca.contribution,org.apache.tuscany.sca.mo

+ nitor,org.apache.tuscany.sca.extensibility";version="1.4"

+Private-Package: org.apache.tuscany.sca.workspace.impl;version="1.4"

+Tool: Bnd-0.0.255

+Bundle-Name: Apache Tuscany SCA Domain Workspace Model

+Created-By: 1.6.0_07 (Sun Microsystems Inc.)

+Bundle-Vendor: The Apache Software Foundation

+Bundle-Version: 1.4

+Bnd-LastModified: 1225397195718

+Bundle-ManifestVersion: 2

+Bundle-License: http://www.apache.org/licenses/LICENSE-2.0.txt

+Bundle-Description: Apache Tuscany SCA Domain Workspace Model

+Import-Package: org.apache.tuscany.sca.assembly;version="1.4.0",

+ org.apache.tuscany.sca.contribution;version="1.4",

+ org.apache.tuscany.sca.contribution.resolver;version="1.4",

+ org.apache.tuscany.sca.core;version="1.4",

+ org.apache.tuscany.sca.extensibility;version="1.4",

+ org.apache.tuscany.sca.interfacedef;version="1.4.0",

+ org.apache.tuscany.sca.monitor;version="1.4",

+ org.apache.tuscany.sca.workspace;version="1.4",

+ org.apache.tuscany.sca.workspace.builder;version="1.4"

+Bundle-SymbolicName: org.apache.tuscany.sca.workspace

+Bundle-DocURL: http://www.apache.org/

+

diff --git a/java/sca/modules/workspace/NOTICE b/java/sca/modules/workspace/NOTICE
new file mode 100644
index 0000000000..fdfa0e9faa
--- /dev/null
+++ b/java/sca/modules/workspace/NOTICE
@@ -0,0 +1,6 @@
+${pom.name}
+Copyright (c) 2005 - 2008 The Apache Software Foundation
+
+This product includes software developed by
+The Apache Software Foundation (http://www.apache.org/).
+
diff --git a/java/sca/modules/workspace/pom.xml b/java/sca/modules/workspace/pom.xml
new file mode 100644
index 0000000000..1fd22b65ed
--- /dev/null
+++ b/java/sca/modules/workspace/pom.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * 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.    
+-->
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.tuscany.sca</groupId>
+        <artifactId>tuscany-modules</artifactId>
+        <version>1.4-EQUINOX-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>tuscany-workspace</artifactId>
+    <name>Apache Tuscany SCA Domain Workspace Model</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-contribution</artifactId>
+            <version>1.4-EQUINOX-SNAPSHOT</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-assembly</artifactId>
+            <version>1.4-EQUINOX-SNAPSHOT</version>
+        </dependency>
+
+    </dependencies>
+
+</project>
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/DefaultWorkspaceFactory.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/DefaultWorkspaceFactory.java
new file mode 100644
index 0000000000..e895669d23
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/DefaultWorkspaceFactory.java
@@ -0,0 +1,32 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace;
+
+import org.apache.tuscany.sca.workspace.impl.WorkspaceFactoryImpl;
+
+
+/**
+ * Default implementation of a contribution workspace model factory.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DefaultWorkspaceFactory extends WorkspaceFactoryImpl {
+    
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/Workspace.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/Workspace.java
new file mode 100644
index 0000000000..66f38afec7
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/Workspace.java
@@ -0,0 +1,39 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+
+/**
+ * A workspace containing contributions.
+ *
+ * @version $Rev$ $Date$
+ */
+public interface Workspace extends Contribution {
+
+    /**
+     * Returns the list of contributions in the workspace. 
+     * @return the list of contributions
+     */
+    List<Contribution> getContributions();
+    
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/WorkspaceFactory.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/WorkspaceFactory.java
new file mode 100644
index 0000000000..2656068bea
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/WorkspaceFactory.java
@@ -0,0 +1,36 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace;
+
+
+
+/**
+ * A factory for the contribution workspace model.
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface WorkspaceFactory {
+    
+  /**
+     * Create a new contribution workspace model object. 
+     * @return
+     */
+    Workspace createWorkspace();
+}
\ No newline at end of file
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilder.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilder.java
new file mode 100644
index 0000000000..b7c11f769b
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilder.java
@@ -0,0 +1,49 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace.builder;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.workspace.Workspace;
+
+/**
+ * A contribution builder.
+ *
+ * @version $Rev$ $Date$
+ */
+public interface ContributionBuilder {
+
+    /**
+     * Returns the ID of the builder.
+     * 
+     * @return
+     */
+    String getID();
+    
+    /**
+     * Build a contribution.
+     * 
+     * @param contribution
+     * @param workspace
+     * @param monitor
+     */
+    void build(Contribution contribution, Workspace workspace, Monitor monitor) throws ContributionBuilderException;
+
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilderException.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilderException.java
new file mode 100644
index 0000000000..10c18def10
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilderException.java
@@ -0,0 +1,45 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace.builder;
+
+/**
+ * Reports a contribution builder exception.
+ *
+ * @version $Rev$ $Date$
+ */
+public class ContributionBuilderException extends Exception {
+    private static final long serialVersionUID = -1198817287971778953L;
+
+    public ContributionBuilderException() {
+    }
+
+    public ContributionBuilderException(String message) {
+        super(message);
+    }
+
+    public ContributionBuilderException(Throwable cause) {
+        super(cause);
+    }
+
+    public ContributionBuilderException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilderExtensionPoint.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilderExtensionPoint.java
new file mode 100644
index 0000000000..8200321eec
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/ContributionBuilderExtensionPoint.java
@@ -0,0 +1,51 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace.builder;
+
+/**
+ * An extension point for Contribution builders.
+ *
+ * @version $Rev: $ $Date: $
+ */
+public interface ContributionBuilderExtensionPoint {
+
+    /**
+     * Adds a contribution builder.
+     * 
+     * @param contributionBuilder
+     */
+    void addContributionBuilder(ContributionBuilder contributionBuilder);
+    
+    /**
+     * Removes a contribution builder.
+     *  
+     * @param contributionBuilder
+     */
+    void removeContributionBuilder(ContributionBuilder contributionBuilder);
+    
+    /**
+     * Returns the contribution builder with the given id.
+     * 
+     * @param id
+     * @return
+     */
+    ContributionBuilder getContributionBuilder(String id);
+    
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/DefaultContributionBuilderExtensionPoint.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/DefaultContributionBuilderExtensionPoint.java
new file mode 100644
index 0000000000..1918732a25
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/builder/DefaultContributionBuilderExtensionPoint.java
@@ -0,0 +1,139 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace.builder;
+
+import java.lang.reflect.Constructor;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.workspace.Workspace;
+
+/**
+ * Default implementation of a provider factory extension point.
+ *
+ * @version $Rev$ $Date$
+ */
+public class DefaultContributionBuilderExtensionPoint implements ContributionBuilderExtensionPoint {
+
+    private ExtensionPointRegistry registry;
+    private final Map<String, ContributionBuilder> builders = new HashMap<String, ContributionBuilder>();
+    private boolean loaded;
+
+    public DefaultContributionBuilderExtensionPoint(ExtensionPointRegistry registry) {
+        this.registry = registry;
+    }
+
+    public void addContributionBuilder(ContributionBuilder builder) {
+        builders.put(builder.getID(), builder);
+    }
+
+    public void removeContributionBuilder(ContributionBuilder builder) {
+        builders.remove(builder.getID());
+    }
+
+    public ContributionBuilder getContributionBuilder(String id) {
+        loadBuilders();
+        return builders.get(id);
+    }
+
+    /**
+     * Load builders declared under META-INF/services.
+     */
+    private void loadBuilders() {
+        if (loaded)
+            return;
+        
+        FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
+        
+        // Get the provider factory service declarations
+        Set<ServiceDeclaration> builderDeclarations;
+        ServiceDiscovery serviceDiscovery = ServiceDiscovery.getInstance();
+        try {
+            builderDeclarations = serviceDiscovery.getServiceDeclarations(ContributionBuilder.class.getName());
+        } catch (Exception e) {
+            throw new IllegalStateException(e);
+        }
+
+        for (ServiceDeclaration builderDeclaration : builderDeclarations) {
+        Map<String, String> attributes = builderDeclaration.getAttributes();
+            String id = attributes.get("id");
+
+            ContributionBuilder builder = new LazyContributionBuilder(id, builderDeclaration, this, factories);
+            builders.put(id, builder);
+        }
+    }
+
+    /**
+     * A wrapper around a contribution builder allowing lazy
+     * loading and initialization of implementation providers.
+     */
+    private static class LazyContributionBuilder implements ContributionBuilder {
+
+        private FactoryExtensionPoint factories;
+        private String id;
+        private ServiceDeclaration builderDeclaration;
+        private ContributionBuilder builder;
+        private ContributionBuilderExtensionPoint builders;
+
+        private LazyContributionBuilder(String id, ServiceDeclaration factoryDeclaration,
+                                     ContributionBuilderExtensionPoint builders, FactoryExtensionPoint factories) {
+            this.id = id;
+            this.builderDeclaration = factoryDeclaration;
+            this.builders = builders;
+            this.factories = factories;
+        }
+        
+        public String getID() {
+            return id;
+        }
+        
+        public void build(Contribution contribution, Workspace workspace, Monitor monitor) throws ContributionBuilderException {
+            getBuilder().build(contribution, workspace, monitor);
+        }
+
+        private ContributionBuilder getBuilder() {
+            if (builder == null) {
+                try {
+                    Class<ContributionBuilder> builderClass = (Class<ContributionBuilder>)builderDeclaration.loadClass();
+                    try {
+                        Constructor<ContributionBuilder> constructor = builderClass.getConstructor(FactoryExtensionPoint.class);
+                        builder = constructor.newInstance(factories);
+                    } catch (NoSuchMethodException e) {
+                        Constructor<ContributionBuilder> constructor = builderClass.getConstructor(ContributionBuilderExtensionPoint.class, FactoryExtensionPoint.class);
+                        builder = constructor.newInstance(builders, factories);
+                    }
+                } catch (Exception e) {
+                    throw new IllegalStateException(e);
+                }
+            }
+            return builder;
+        }
+
+    }
+
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/impl/WorkspaceFactoryImpl.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/impl/WorkspaceFactoryImpl.java
new file mode 100644
index 0000000000..e41cc3ea83
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/impl/WorkspaceFactoryImpl.java
@@ -0,0 +1,40 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace.impl;
+
+import org.apache.tuscany.sca.workspace.Workspace;
+import org.apache.tuscany.sca.workspace.WorkspaceFactory;
+
+
+/**
+ * Default implementation of a contribution workspace model factory.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class WorkspaceFactoryImpl implements WorkspaceFactory {
+    
+    protected WorkspaceFactoryImpl() {
+    }
+    
+    public Workspace createWorkspace() {
+        return new WorkspaceImpl();
+    }
+
+}
diff --git a/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/impl/WorkspaceImpl.java b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/impl/WorkspaceImpl.java
new file mode 100644
index 0000000000..8c2e119493
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/java/org/apache/tuscany/sca/workspace/impl/WorkspaceImpl.java
@@ -0,0 +1,147 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.workspace.impl;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.contribution.Artifact;
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.Export;
+import org.apache.tuscany.sca.contribution.Import;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.workspace.Workspace;
+
+/**
+ * WorkspaceImpl
+ *
+ * @version $Rev$ $Date$
+ */
+class WorkspaceImpl implements Workspace {
+
+    private List<Contribution> contributions = new ArrayList<Contribution>();
+    private String location;
+    private String uri;
+    private Object model;
+    private byte[] contents;
+    private boolean unresolved;
+    private ModelResolver modelResolver; 
+    private List<Contribution> dependencies = new ArrayList<Contribution>();
+    
+    /**
+     * Constructs a new workspace. 
+     */
+    WorkspaceImpl() {
+    }
+    
+    public String getLocation() {
+        return location;
+    }
+
+    public Object getModel() {
+        return model;
+    }
+
+    public String getURI() {
+        return uri;
+    }
+
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public void setModel(Object model) {
+        this.model = model;
+    }
+
+    public byte[] getContents() {
+        return contents;
+    }
+    
+    public void setContents(byte[] contents) {
+        this.contents = contents;
+    }
+    
+    public void setURI(String uri) {
+        this.uri = uri;
+    }
+
+    public boolean isUnresolved() {
+        return unresolved;
+    }
+
+    public void setUnresolved(boolean unresolved) {
+        this.unresolved = unresolved;
+    }
+
+    public List<Contribution> getContributions() {
+        return contributions;
+    }
+    
+    public List<Artifact> getArtifacts() {
+        return (List<Artifact>)(Object)contributions;
+    }
+    
+    public List<Contribution> getDependencies() {
+        return dependencies;
+    }
+
+    public ClassLoader getClassLoader() {
+        //FIXME Remove later
+        return null;
+    }
+    
+    public void setClassLoader(ClassLoader classLoader) {
+        //FIXME Remove later
+    }
+    
+    public List<Composite> getDeployables() {
+        List<Composite> deployables = new ArrayList<Composite>();
+        for (Contribution contribution: contributions) {
+            deployables.addAll(contribution.getDeployables());
+        }
+        return deployables;
+    }
+    
+    public List<Export> getExports() {
+        List<Export> exports = new ArrayList<Export>();
+        for (Contribution contribution: contributions) {
+            exports.addAll(contribution.getExports());
+        }
+        return exports;
+    }
+    
+    public List<Import> getImports() {
+        List<Import> imports = new ArrayList<Import>();
+        for (Contribution contribution: contributions) {
+            imports.addAll(contribution.getImports());
+        }
+        return imports;
+    }
+    
+    public ModelResolver getModelResolver() {
+        return modelResolver;
+    }
+    
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+}
diff --git a/java/sca/modules/workspace/src/main/resources/META-INF/services/org.apache.tuscany.sca.workspace.WorkspaceFactory b/java/sca/modules/workspace/src/main/resources/META-INF/services/org.apache.tuscany.sca.workspace.WorkspaceFactory
new file mode 100644
index 0000000000..d390d29d90
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/resources/META-INF/services/org.apache.tuscany.sca.workspace.WorkspaceFactory
@@ -0,0 +1,18 @@
+# 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. 

+

+org.apache.tuscany.sca.workspace.DefaultWorkspaceFactory
\ No newline at end of file
diff --git a/java/sca/modules/workspace/src/main/resources/META-INF/services/org.apache.tuscany.sca.workspace.builder.ContributionBuilderExtensionPoint b/java/sca/modules/workspace/src/main/resources/META-INF/services/org.apache.tuscany.sca.workspace.builder.ContributionBuilderExtensionPoint
new file mode 100644
index 0000000000..98ad0b72b0
--- /dev/null
+++ b/java/sca/modules/workspace/src/main/resources/META-INF/services/org.apache.tuscany.sca.workspace.builder.ContributionBuilderExtensionPoint
@@ -0,0 +1,18 @@
+# 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. 

+

+org.apache.tuscany.sca.workspace.builder.DefaultContributionBuilderExtensionPoint
\ No newline at end of file