1 files changed, 212 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositeWireApplierImpl.java b/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositeWireApplierImpl.java
new file mode 100644
index 0000000000..3167b8cdb6
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositeWireApplierImpl.java
@@ -0,0 +1,212 @@
+/*
+ * 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.builder.impl;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.assembly.Implementation;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.assembly.Wire;
+import org.apache.tuscany.sca.assembly.builder.BuilderContext;
+import org.apache.tuscany.sca.assembly.builder.CompositeBuilder;
+import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException;
+import org.apache.tuscany.sca.assembly.builder.Messages;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.monitor.Monitor;
+
+/**
+ * Apply any <wire/> elements in the composites by creating suitable reference targets
+ *
+ * @version $Rev$ $Date$
+ */
+public class CompositeWireApplierImpl implements CompositeBuilder {
+    
+    private InterfaceContractMapper interfaceContractMapper;
+    
+    
+    public CompositeWireApplierImpl(ExtensionPointRegistry registry) {
+        UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
+        interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class);
+    }    
+
+    public String getID() {
+        return "org.apache.tuscany.sca.assembly.builder.CompositeWireApplierImpl";
+    }
+
+    public Composite build(Composite composite, BuilderContext context)
+        throws CompositeBuilderException {
+        
+        processComposite(composite, context);
+        
+        return composite;
+    }
+    
+    private void processComposite(Composite composite, BuilderContext context){
+        // Index components, services and references
+        Map<String, Component> components = new HashMap<String, Component>();
+        Map<String, ComponentService> componentServices = new HashMap<String, ComponentService>();
+        Map<String, ComponentReference> componentReferences = new HashMap<String, ComponentReference>();
+        indexComponentsServicesAndReferences(composite, components, componentServices, componentReferences);
+
+        // Connect component references as described in wires
+        connectWires(composite, componentServices, componentReferences, context.getMonitor());
+        
+        for (Component component : composite.getComponents()) {
+            // recurse for composite implementations
+            Implementation implementation = component.getImplementation();
+            if (implementation instanceof Composite) {
+                processComposite((Composite)implementation, context);
+            }    
+        }
+    }
+    
+    protected void indexComponentsServicesAndReferences(Composite composite,
+            Map<String, Component> components,
+            Map<String, ComponentService> componentServices,
+            Map<String, ComponentReference> componentReferences) {
+
+        for (Component component : composite.getComponents()) {
+
+            // Index components by name
+            components.put(component.getName(), component);
+
+            ComponentService nonCallbackService = null;
+            int nonCallbackServices = 0;
+            for (ComponentService componentService : component.getServices()) {
+
+                // Index component services by component name / service name
+                String uri = component.getName() + '/'
+                        + componentService.getName();
+                componentServices.put(uri, componentService);
+
+                // count how many non-callback services there are
+                // if there is only one the component name also acts as the
+                // service name
+                if (!componentService.isForCallback()) {
+                    // Check how many non callback non-promoted services we have
+                    if (nonCallbackServices == 0) {
+                        nonCallbackService = componentService;
+                    }
+                    nonCallbackServices++;
+                }
+            }
+
+            if (nonCallbackServices == 1) {
+                // If we have a single non callback service, index it by
+                // component name as well
+                componentServices.put(component.getName(), nonCallbackService);
+            }
+
+            // Index references by component name / reference name
+            for (ComponentReference componentReference : component
+                    .getReferences()) {
+                String uri = component.getName() + '/'
+                        + componentReference.getName();
+                componentReferences.put(uri, componentReference);
+            }
+        }
+    }    
+
+    /**
+     * Resolve wires and connect the sources to their targets
+     * 
+     * @param composite
+     * @param componentServices
+     * @param componentReferences
+     * @param problems
+     */
+    private void connectWires(Composite composite,
+                              Map<String, ComponentService> componentServices,
+                              Map<String, ComponentReference> componentReferences,
+                              Monitor monitor) {
+
+        // For each wire, resolve the source reference, the target service, and
+        // add it to the list of targets of the reference
+        List<Wire> wires = composite.getWires();
+        for (int i = 0, n = wires.size(); i < n; i++) {
+            Wire wire = wires.get(i);
+
+            ComponentReference resolvedReference;
+            ComponentService resolvedService;
+
+            // Resolve the source reference
+            ComponentReference source = wire.getSource();
+            if (source != null && source.isUnresolved()) {
+                resolvedReference = componentReferences.get(source.getName());
+                if (resolvedReference != null) {
+                    wire.setSource(resolvedReference);
+                } else {
+                    Monitor.warning(monitor, this, Messages.ASSEMBLY_VALIDATION, "WireSourceNotFound", source
+                        .getName());
+                }
+            } else {
+                resolvedReference = wire.getSource();
+            }
+
+            // Resolve the target service
+            ComponentService target = wire.getTarget();
+            if (target != null && target.isUnresolved()) {
+                resolvedService = componentServices.get(target.getName());
+                if (resolvedService != null) {
+                    wire.setTarget(target);
+                } else {
+                    Monitor.warning(monitor, this, Messages.ASSEMBLY_VALIDATION, "WireTargetNotFound", target
+                        .getName());
+                }
+            } else {
+                resolvedService = wire.getTarget();
+            }
+
+            // Add the target service to the list of targets of the
+            // reference
+            if (resolvedReference != null && resolvedService != null) {
+                // Check that the target component service provides
+                // a superset of
+                // the component reference interface
+                if (resolvedReference.getInterfaceContract() == null || interfaceContractMapper
+                    .isCompatibleSubset(resolvedReference.getInterfaceContract(), resolvedService.getInterfaceContract())) {
+
+                    //resolvedReference.getTargets().add(resolvedService);
+                    if (wire.isReplace()) {
+                        resolvedReference.getTargets().clear();
+                    }
+                    resolvedReference.getTargets().add(wire.getTarget());
+                } else {
+                    Monitor.warning(monitor, this, Messages.ASSEMBLY_VALIDATION, "WireIncompatibleInterface", source
+                        .getName(), target.getName());
+                }
+            }
+        }
+
+        // Clear the list of wires
+        composite.getWires().clear();
+    }
+}