1 files changed, 111 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/builder/impl/DefaultWireBuilder.java b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/builder/impl/DefaultWireBuilder.java
new file mode 100644
index 0000000000..5243c2a8cd
--- /dev/null
+++ b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/builder/impl/DefaultWireBuilder.java
@@ -0,0 +1,111 @@
+/**
+ * 
+ * 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.core.builder.impl;
+
+import org.apache.tuscany.core.builder.BuilderConfigException;
+import org.apache.tuscany.core.builder.HierarchicalWireBuilder;
+import org.apache.tuscany.core.builder.WireBuilder;
+import org.apache.tuscany.core.context.ScopeContext;
+import org.apache.tuscany.core.wire.TargetInvocationConfiguration;
+import org.apache.tuscany.core.wire.SourceInvocationConfiguration;
+import org.apache.tuscany.core.wire.TargetWireFactory;
+import org.apache.tuscany.core.wire.SourceWireFactory;
+import org.apache.tuscany.core.wire.impl.InvokerInterceptor;
+import org.apache.tuscany.core.wire.impl.MessageChannelImpl;
+
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * The top-most <code>WireBuilder</code> configured in a runtime. Responsible for constructing wires from source and target chains,
+ * this implementation first bridges the chains and then delegates to any other wire builders.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DefaultWireBuilder implements HierarchicalWireBuilder {
+
+    // collection configured wire builders
+    private List<WireBuilder> builders = new ArrayList<WireBuilder>();
+
+    public DefaultWireBuilder() {
+    }
+
+    /**
+     * Adds a wire builder to delegate to
+     */
+    public void addWireBuilder(WireBuilder builder) {
+        builders.add(builder);
+    }
+
+    public void connect(SourceWireFactory<?> sourceFactory, TargetWireFactory<?> targetFactory, Class targetType, boolean downScope,
+                        ScopeContext targetScopeContext) {
+        // get the proxy chain for the target
+        if (targetFactory != null) {
+            // if null, the target side has no interceptors or handlers
+            Map<Method, TargetInvocationConfiguration> targetInvocationConfigs = targetFactory.getConfiguration().getInvocationConfigurations();
+            for (SourceInvocationConfiguration sourceInvocationConfig : sourceFactory.getConfiguration()
+                    .getInvocationConfigurations().values()) {
+                // match wire chains
+                TargetInvocationConfiguration targetInvocationConfig = targetInvocationConfigs.get(sourceInvocationConfig.getMethod());
+                if (targetInvocationConfig == null){
+                    BuilderConfigException e= new BuilderConfigException("Incompatible source and target interface types for reference");
+                    //FIXME xcv
+                    e.setIdentifier(sourceFactory.getConfiguration().getReferenceName());
+                    throw e;
+                }
+                // if handler is configured, add that
+                if (targetInvocationConfig.getRequestHandlers() != null) {
+                    sourceInvocationConfig.setTargetRequestChannel(new MessageChannelImpl(targetInvocationConfig
+                            .getRequestHandlers()));
+                    sourceInvocationConfig.setTargetResponseChannel(new MessageChannelImpl(targetInvocationConfig
+                            .getResponseHandlers()));
+                } else {
+                    // no handlers, just connect interceptors
+                    if (targetInvocationConfig.getHeadInterceptor() == null) {
+                        BuilderConfigException e = new BuilderConfigException("No target handler or interceptor for operation");
+                        e.setIdentifier(targetInvocationConfig.getMethod().getName());
+                        throw e;
+                    }
+                    //xcv if (!(sourceInvocationConfig.getLastTargetInterceptor() instanceof InvokerInterceptor && targetInvocationConfig
+                    if (!(sourceInvocationConfig.getTailInterceptor() instanceof InvokerInterceptor && targetInvocationConfig
+                            .getHeadInterceptor() instanceof InvokerInterceptor)) {
+                        // check that we do not have the case where the only interceptors are invokers since we just need one
+                        sourceInvocationConfig.setTargetInterceptor(targetInvocationConfig.getHeadInterceptor());
+                    }
+                }
+            }
+        }
+        // delegate to other wire builders
+        for (WireBuilder builder : builders) {
+            builder.connect(sourceFactory, targetFactory, targetType, downScope, targetScopeContext);
+        }
+        // signal that wire buildSource process is complete
+        for (SourceInvocationConfiguration sourceInvocationConfig : sourceFactory.getConfiguration().getInvocationConfigurations()
+                .values()) {
+            sourceInvocationConfig.build();
+            // TODO optimize if no proxy needed using NullWireFactory
+        }
+    }
+
+    public void completeTargetChain(TargetWireFactory targetFactory, Class targetType, ScopeContext targetScopeContext)
+            throws BuilderConfigException {
+        // delegate to other wire builders
+        for (WireBuilder builder : builders) {
+            builder.completeTargetChain(targetFactory, targetType, targetScopeContext);
+        }
+    }
+
+}