diff options
Diffstat (limited to 'sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/WireBuilderSupport.java')
-rw-r--r-- | sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/WireBuilderSupport.java | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/WireBuilderSupport.java b/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/WireBuilderSupport.java new file mode 100644 index 0000000000..5b2d9de0e3 --- /dev/null +++ b/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/WireBuilderSupport.java @@ -0,0 +1,102 @@ +/** + * + * 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.extension; + +import java.lang.reflect.Method; +import java.lang.reflect.ParameterizedType; +import java.lang.reflect.Type; + +import org.apache.tuscany.core.builder.BuilderConfigException; +import org.apache.tuscany.core.builder.ContextFactory; +import org.apache.tuscany.core.builder.WireBuilder; +import org.apache.tuscany.core.context.QualifiedName; +import org.apache.tuscany.core.context.ScopeContext; +import org.apache.tuscany.core.runtime.RuntimeContext; +import org.apache.tuscany.core.system.annotation.Autowire; +import org.apache.tuscany.core.wire.SourceInvocationConfiguration; +import org.apache.tuscany.core.wire.SourceWireFactory; +import org.apache.tuscany.core.wire.TargetInvocationConfiguration; +import org.apache.tuscany.core.wire.TargetInvoker; +import org.apache.tuscany.core.wire.TargetWireFactory; +import org.osoa.sca.annotations.Init; + +/** + * A base class for {@link WireBuilder} implementations + * + * @version $$Rev$$ $$Date$$ + */ +public abstract class WireBuilderSupport<T extends ContextFactory<?>> implements WireBuilder { + + protected RuntimeContext runtimeContext; + protected Class targetClass; + + @Autowire + public void setRuntimeContext(RuntimeContext context) { + runtimeContext = context; + } + + public WireBuilderSupport() { + // reflect the generic type of the subclass + Type type = this.getClass().getGenericSuperclass(); + if (type instanceof ParameterizedType) { + targetClass = (Class) ((ParameterizedType) type).getActualTypeArguments()[0]; + } else { + throw new AssertionError("Subclasses of " + ContextFactoryBuilderSupport.class.getName() + " must be genericized"); + } + } + + @Init(eager = true) + public void init() throws Exception { + runtimeContext.addBuilder(this); + } + + public void connect(SourceWireFactory sourceFactory, TargetWireFactory targetFactory, Class targetType, boolean downScope, + ScopeContext targetScopeContext) throws BuilderConfigException { + if (!targetClass.isAssignableFrom(targetType)) { + return; + } + + for (SourceInvocationConfiguration sourceInvocationConfig : sourceFactory.getConfiguration().getInvocationConfigurations() + .values()) { + TargetInvoker invoker = createInvoker(sourceFactory.getConfiguration() + .getTargetName(), sourceInvocationConfig.getMethod(), targetScopeContext, downScope); + sourceInvocationConfig.setTargetInvoker(invoker); + } + } + + public void completeTargetChain(TargetWireFactory targetFactory, Class targetType, ScopeContext targetScopeContext) + throws BuilderConfigException { + + if (!targetClass.isAssignableFrom(targetType)) { + return; + } + for (TargetInvocationConfiguration targetInvocationConfig : targetFactory.getConfiguration().getInvocationConfigurations() + .values()) { + Method method = targetInvocationConfig.getMethod(); + TargetInvoker invoker = createInvoker(targetFactory.getConfiguration().getTargetName(), method, targetScopeContext, false); + targetInvocationConfig.setTargetInvoker(invoker); + } + } + + /** + * Callback to create the specific <code>TargetInvoker</code> type for dispatching to the target type + * + * @param targetName the fully qualified name of the wire target + * @param operation the operation the invoker will be associated with + * @param context the scope context that manages the target context + * @param downScope whether the wire source scope is "longer" than the target + */ + protected abstract TargetInvoker createInvoker(QualifiedName targetName, Method operation, ScopeContext context, boolean downScope); + +} |