1 files changed, 109 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-stable-20060304/sca/model/src/main/java/org/apache/tuscany/model/scdl/loader/impl/SCDLXMLReader.java b/sca-java-1.x/tags/java-stable-20060304/sca/model/src/main/java/org/apache/tuscany/model/scdl/loader/impl/SCDLXMLReader.java
new file mode 100644
index 0000000000..6fa426b2f8
--- /dev/null
+++ b/sca-java-1.x/tags/java-stable-20060304/sca/model/src/main/java/org/apache/tuscany/model/scdl/loader/impl/SCDLXMLReader.java
@@ -0,0 +1,109 @@
+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  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.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.tuscany.model.scdl.loader.impl;
+
+import java.io.IOException;
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.tuscany.model.scdl.ComponentType;
+import org.apache.tuscany.model.scdl.Module;
+import org.apache.tuscany.model.scdl.ModuleFragment;
+import org.apache.tuscany.model.scdl.ScdlFactory;
+import org.apache.tuscany.model.scdl.Subsystem;
+import org.apache.tuscany.model.scdl.impl.ScdlPackageImpl;
+import org.apache.tuscany.sdo.util.DataObjectUtil;
+import org.apache.tuscany.sdo.util.SDOUtil;
+import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
+
+import commonj.sdo.helper.XMLDocument;
+import commonj.sdo.helper.XMLHelper;
+
+/**
+ */
+public class SCDLXMLReader extends ResourceSetImpl {
+    
+    private Map<String, Object> cache=new HashMap<String, Object>();
+
+    // Initialize the SDO runtime and register the SCDL model
+    static {
+        DataObjectUtil.initRuntime();
+        SDOUtil.registerStaticTypes(ScdlFactory.class);
+    }
+
+    /**
+     * Constructor
+     */
+    public SCDLXMLReader() {
+    }
+
+    /**
+     * Returns an SCDL module.
+     * @param uri
+     * @return
+     */
+    public Module getModule(String uri) {
+        return (Module)getRootObject(uri);
+    }
+
+    /**
+     * Returns an SCDL module fragment.
+     * @param uri
+     * @return
+     */
+    public ModuleFragment getModuleFragment(String uri) {
+        return (ModuleFragment)getRootObject(uri);
+    }
+
+    /**
+     * Returns an SCDL component type.
+     * @param uri
+     * @return
+     */
+    public ComponentType getComponentType(String uri) {
+        return (ComponentType)getRootObject(uri);
+    }
+    
+    /**
+     * Returns an SCDL subsystem.
+     * @param uri
+     * @return
+     */
+    public Subsystem getSubsystem(String uri) {
+        return (Subsystem)getRootObject(uri);
+    }
+
+    /**
+     * Returns the root object at the given URI.
+     * @param uri
+     * @return
+     */
+    private Object getRootObject(String uri) {
+        Object object = cache.get(uri);
+        if (object==null) {
+            try {
+                XMLDocument document=XMLHelper.INSTANCE.load(new URL(uri).openStream());
+                return document.getRootObject();
+           } catch (IOException e) {
+               throw new RuntimeException(uri, e);
+           }
+        }
+        return object;
+    }
+    
+}