1 files changed, 83 insertions, 0 deletions
diff --git a/sandbox/mobile-android/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultValidationSchemaExtensionPoint.java b/sandbox/mobile-android/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultValidationSchemaExtensionPoint.java
new file mode 100644
index 0000000000..e27add9b81
--- /dev/null
+++ b/sandbox/mobile-android/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultValidationSchemaExtensionPoint.java
@@ -0,0 +1,83 @@
+/*
+ * 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.contribution.processor;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+
+/**
+ * Default implementation of an extension point for XML schemas. 
+ *
+ * @version $Rev: 632642 $ $Date: 2008-03-01 10:16:44 -0800 (Sat, 01 Mar 2008) $
+ */
+public class DefaultValidationSchemaExtensionPoint implements ValidationSchemaExtensionPoint {
+    
+    private List<String> schemas = new ArrayList<String>();
+    private boolean loaded;
+    
+    public void addSchema(String uri) {
+        schemas.add(uri);
+    }
+    
+    public void removeSchema(String uri) {
+        schemas.remove(uri);
+    }
+    
+    /**
+     * Load schema declarations from META-INF/services/
+     * org.apache.tuscany.sca.contribution.processor.ValidationSchema files
+     */
+    private void loadSchemas() {
+        if (loaded)
+            return;
+
+        // Get the schema declarations
+        Set<ServiceDeclaration> schemaDeclarations; 
+        try {
+            schemaDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations("org.apache.tuscany.sca.contribution.processor.ValidationSchema");
+        } catch (IOException e) {
+            throw new IllegalStateException(e);
+        }
+        
+        // Find each schema
+        for (ServiceDeclaration schemaDeclaration: schemaDeclarations) {
+            URL url = schemaDeclaration.getResource();
+            if (url == null) {
+                throw new IllegalArgumentException(new FileNotFoundException(schemaDeclaration.getClassName()));
+            }
+            schemas.add(url.toString());
+        }
+        
+        loaded = true;
+    }
+    
+    public List<String> getSchemas() {
+        loadSchemas();
+        return schemas;
+    }
+
+}