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Diffstat (limited to 'sca-java-1.x/branches/sca-java-0.99/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/ScriptInvokerFactory.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-0.99/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/ScriptInvokerFactory.java | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.99/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/ScriptInvokerFactory.java b/sca-java-1.x/branches/sca-java-0.99/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/ScriptInvokerFactory.java new file mode 100644 index 0000000000..08d17e07b2 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.99/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/ScriptInvokerFactory.java @@ -0,0 +1,147 @@ +/* + * 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.implementation.script; + +import java.io.StringReader; + +import javax.script.Invocable; +import javax.script.ScriptEngine; +import javax.script.ScriptEngineManager; +import javax.script.ScriptException; + +import org.apache.axiom.om.OMElement; +import org.apache.bsf.xml.XMLHelper; +import org.apache.tuscany.sca.assembly.ComponentReference; +import org.apache.tuscany.sca.assembly.ComponentType; +import org.apache.tuscany.sca.assembly.Property; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.Service; +import org.apache.tuscany.sca.core.factory.ObjectCreationException; +import org.apache.tuscany.sca.core.factory.ObjectFactory; +import org.apache.tuscany.sca.extension.helper.InvokerFactory; +import org.apache.tuscany.sca.extension.helper.utils.PropertyValueObjectFactory; +import org.apache.tuscany.sca.implementation.script.engines.TuscanyJRubyScriptEngine; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.wsdl.WSDLInterfaceContract; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.runtime.RuntimeComponent; + +public class ScriptInvokerFactory implements InvokerFactory { + + protected ScriptEngine scriptEngine; + protected XMLHelper xmlHelper; + + protected RuntimeComponent rc; + protected ComponentType ct; + protected ScriptImplementation implementation; + protected PropertyValueObjectFactory propertyFactory; + + + /** + * @param rc + * @param ct + * @param implementation + * @param propertyFactory + */ + public ScriptInvokerFactory(RuntimeComponent rc, + ComponentType ct, + ScriptImplementation implementation, + PropertyValueObjectFactory propertyFactory) { + super(); + this.rc = rc; + this.ct = ct; + this.implementation = implementation; + this.propertyFactory = propertyFactory; + } + + public Invoker createInvoker(Operation operation) { + init(rc, ct, implementation, propertyFactory); + return new ScriptInvoker(scriptEngine, xmlHelper, operation); + } + + protected synchronized void init(RuntimeComponent rc, ComponentType ct, ScriptImplementation implementation, PropertyValueObjectFactory propertyFactory) { + if(scriptEngine!=null) { + return; + } + try { + scriptEngine = getScriptEngineByExtension(implementation.getScriptLanguage()); + if (scriptEngine == null) { + throw new ObjectCreationException("no script engine found for language: " + implementation.getScriptLanguage()); + } + if (!(scriptEngine instanceof Invocable)) { + throw new ObjectCreationException("script engine does not support Invocable: " + scriptEngine); + } + + for (Reference reference : ct.getReferences()) { + scriptEngine.put(reference.getName(), createReferenceProxy(reference.getName(), rc)); + } + + for (Property property : ct.getProperties()) { + ObjectFactory<?> propertyValueFactory = propertyFactory.createValueFactory(property); + if ( propertyValueFactory != null) { + scriptEngine.put(property.getName(), propertyValueFactory.getInstance()); + } + } + + scriptEngine.eval(new StringReader(implementation.getScriptSrc())); + + } catch (ScriptException e) { + throw new ObjectCreationException(e); + } + + // set the databinding and xmlhelper for wsdl interfaces + for (Service service : rc.getServices()) { + InterfaceContract ic = service.getInterfaceContract(); + if (ic instanceof WSDLInterfaceContract) { + // Set to use the Axiom data binding + ic.getInterface().setDefaultDataBinding(OMElement.class.getName()); + xmlHelper = XMLHelper.getArgHelper(scriptEngine); + } + } + } + + /** + * TODO: RuntimeComponent should provide a method like this + */ + @SuppressWarnings("unchecked") + protected Object createReferenceProxy(String name, RuntimeComponent component) { + for (ComponentReference reference : component.getReferences()) { + if (reference.getName().equals(name)) { + Class iface = ((JavaInterface)reference.getInterfaceContract().getInterface()).getJavaClass(); + return component.getComponentContext().getService(iface, name); + } + } + throw new IllegalArgumentException("reference " + name + " not found on component: " + component); + } + + /** + * Hack for now to work around a problem with the JRuby script engine + */ + protected ScriptEngine getScriptEngineByExtension(String scriptExtn) { + ScriptEngineManager scriptEngineManager = new ScriptEngineManager(); + if ("rb".equals(scriptExtn)) { + return new TuscanyJRubyScriptEngine(); + } else { + return scriptEngineManager.getEngineByExtension(scriptExtn); + } + } +} |