1 files changed, 164 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/kernel/2.0-alpha-incubating/core/src/main/java/org/apache/tuscany/core/implementation/processor/ReferenceProcessor.java b/sca-java-1.x/tags/kernel/2.0-alpha-incubating/core/src/main/java/org/apache/tuscany/core/implementation/processor/ReferenceProcessor.java
new file mode 100644
index 0000000000..9ecc1c768e
--- /dev/null
+++ b/sca-java-1.x/tags/kernel/2.0-alpha-incubating/core/src/main/java/org/apache/tuscany/core/implementation/processor/ReferenceProcessor.java
@@ -0,0 +1,164 @@
+/*
+ * 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.core.implementation.processor;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.net.URI;
+import java.util.Collection;
+
+import org.osoa.sca.annotations.Reference;
+
+import org.apache.tuscany.spi.deployer.DeploymentContext;
+import org.apache.tuscany.spi.idl.InvalidServiceContractException;
+import org.apache.tuscany.spi.idl.java.JavaInterfaceProcessorRegistry;
+import org.apache.tuscany.spi.implementation.java.ImplementationProcessorExtension;
+import org.apache.tuscany.spi.implementation.java.JavaMappedProperty;
+import org.apache.tuscany.spi.implementation.java.JavaMappedReference;
+import org.apache.tuscany.spi.implementation.java.JavaMappedService;
+import org.apache.tuscany.spi.implementation.java.PojoComponentType;
+import org.apache.tuscany.spi.implementation.java.ProcessingException;
+import org.apache.tuscany.spi.model.Multiplicity;
+import org.apache.tuscany.spi.model.ServiceContract;
+
+import static org.apache.tuscany.core.util.JavaIntrospectionHelper.toPropertyName;
+
+/**
+ * Processes an {@link @Reference} annotation, updating the component type with corresponding {@link
+ * org.apache.tuscany.spi.implementation.java.JavaMappedReference}
+ *
+ * @version $Rev$ $Date$
+ */
+public class ReferenceProcessor extends ImplementationProcessorExtension {
+
+    private JavaInterfaceProcessorRegistry regsitry;
+
+    public ReferenceProcessor(@Reference JavaInterfaceProcessorRegistry registry) {
+        this.regsitry = registry;
+    }
+
+    public void visitMethod(
+        Method method,
+        PojoComponentType<JavaMappedService, JavaMappedReference, JavaMappedProperty<?>> type,
+        DeploymentContext context) throws ProcessingException {
+        Reference annotation = method.getAnnotation(Reference.class);
+        if (annotation == null) {
+            return; // Not a reference annotation.
+        }
+        if (method.getParameterTypes().length != 1) {
+            throw new IllegalReferenceException("Setter must have one parameter", method.toString());
+        }
+        String name = null;
+        if (annotation.name() != null && annotation.name().length() > 0) {
+            name = annotation.name();
+        }
+        boolean required = annotation.required();
+        if (name == null) {
+            name = toPropertyName(method.getName());
+        }
+        if (type.getReferences().get(name) != null) {
+            throw new DuplicateReferenceException(name);
+        }
+
+        JavaMappedReference reference = new JavaMappedReference();
+        reference.setMember(method);
+        reference.setRequired(required);
+        reference.setUri(URI.create("#" + name));
+        ServiceContract contract;
+        try {
+            Class<?> rawType = method.getParameterTypes()[0];
+            if (rawType.isArray() || Collection.class.isAssignableFrom(rawType)) {
+                if (required) {
+                    reference.setMultiplicity(Multiplicity.ONE_N);
+                } else {
+                    reference.setMultiplicity(Multiplicity.ZERO_N);
+                }
+            } else {
+                if (required) {
+                    reference.setMultiplicity(Multiplicity.ONE_ONE);
+                } else {
+                    reference.setMultiplicity(Multiplicity.ZERO_ONE);
+                }
+            }
+            Class<?> baseType = getBaseType(rawType, method.getGenericParameterTypes()[0]);
+            contract = regsitry.introspect(baseType);
+        } catch (InvalidServiceContractException e) {
+            throw new ProcessingException(e);
+        }
+        reference.setServiceContract(contract);
+        type.getReferences().put(name, reference);
+    }
+
+    public void visitField(
+        Field field,
+        PojoComponentType<JavaMappedService, JavaMappedReference, JavaMappedProperty<?>> type,
+        DeploymentContext context) throws ProcessingException {
+        Reference annotation = field.getAnnotation(Reference.class);
+        if (annotation == null) {
+            return;
+        }
+        String name = field.getName();
+        if (annotation.name() != null) {
+            name = annotation.name();
+        }
+        boolean required = annotation.required();
+        if (name.length() == 0) {
+            name = field.getName();
+        }
+        if (type.getReferences().get(name) != null) {
+            throw new DuplicateReferenceException(name);
+        }
+        JavaMappedReference reference = new JavaMappedReference();
+        reference.setMember(field);
+        reference.setRequired(required);
+        reference.setUri(URI.create("#" + name));
+        ServiceContract contract;
+        try {
+            Class<?> rawType = field.getType();
+            if (rawType.isArray() || Collection.class.isAssignableFrom(rawType)) {
+                if (required) {
+                    reference.setMultiplicity(Multiplicity.ONE_N);
+                } else {
+                    reference.setMultiplicity(Multiplicity.ZERO_N);
+                }
+            } else {
+                if (required) {
+                    reference.setMultiplicity(Multiplicity.ONE_ONE);
+                } else {
+                    reference.setMultiplicity(Multiplicity.ZERO_ONE);
+                }
+            }
+            Class<?> baseType = getBaseType(rawType, field.getGenericType());
+            contract = regsitry.introspect(baseType);
+        } catch (InvalidServiceContractException e) {
+            throw new ProcessingException(e);
+        }
+        reference.setServiceContract(contract);
+        type.getReferences().put(name, reference);
+    }
+
+    public <T> void visitConstructor(
+        Constructor<T> constructor,
+        PojoComponentType<JavaMappedService,
+            JavaMappedReference, JavaMappedProperty<?>> type,
+        DeploymentContext context) throws ProcessingException {
+
+    }
+}