diff options
Diffstat (limited to 'sca-java-1.x/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/WireObjectFactory.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/WireObjectFactory.java | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/WireObjectFactory.java b/sca-java-1.x/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/WireObjectFactory.java new file mode 100644 index 0000000000..c04869e8f5 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/WireObjectFactory.java @@ -0,0 +1,84 @@ +/* + * 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.wire; + +import java.lang.reflect.Method; +import java.util.HashMap; +import java.util.Map; + +import org.apache.tuscany.spi.ObjectCreationException; +import org.apache.tuscany.spi.ObjectFactory; +import org.apache.tuscany.spi.component.TargetResolutionException; +import org.apache.tuscany.spi.wire.OutboundChainHolder; +import org.apache.tuscany.spi.wire.OutboundWire; +import org.apache.tuscany.spi.wire.WireService; + +/** + * Uses a wire to return an object instance + * + * @version $Rev$ $Date$ + */ +public class WireObjectFactory<T> implements ObjectFactory<T> { + private Class<T> interfaze; + private OutboundWire wire; + private WireService wireService; + // the cache of proxy interface method to operation mappings + private Map<Method, OutboundChainHolder> mappings; + private boolean optimizable; + + /** + * Constructor. + * + * @param interfaze the interface to inject on the client + * @param wire the backing wire + * @param wireService the wire service to create the proxy + * @throws NoMethodForOperationException + */ + public WireObjectFactory(Class<T> interfaze, OutboundWire wire, WireService wireService) + throws NoMethodForOperationException { + this.interfaze = interfaze; + this.wire = wire; + this.wireService = wireService; + this.mappings = WireUtils.createInterfaceToWireMapping(interfaze, wire); + } + + public T getInstance() throws ObjectCreationException { + // note optimization must be done lazily as wire object factories are created during the build phase prior + // to the outbound and inbound wires being connected + if ((optimizable + || wire.isOptimizable()) + && wire.getServiceContract().getInterfaceClass() != null + && interfaze.isAssignableFrom(wire.getServiceContract().getInterfaceClass())) { + optimizable = true; + try { + return interfaze.cast(wire.getTargetService()); + } catch (TargetResolutionException e) { + throw new ObjectCreationException(e); + } + } + // clone the cached mappings + Map<Method, OutboundChainHolder> newChains = new HashMap<Method, OutboundChainHolder>(mappings.size()); + for (Map.Entry<Method, OutboundChainHolder> entry : mappings.entrySet()) { + newChains.put(entry.getKey(), entry.getValue().clone()); + } + return interfaze.cast(wireService.createProxy(interfaze, wire, newChains)); + } + + +} |