/*
* 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.container.ruby;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.tuscany.container.ruby.rubyscript.RubyScript;
import org.apache.tuscany.container.ruby.rubyscript.RubyScriptInstance;
import org.apache.tuscany.spi.ObjectCreationException;
import org.apache.tuscany.spi.component.CompositeComponent;
import org.apache.tuscany.spi.component.ScopeContainer;
import org.apache.tuscany.spi.component.TargetException;
import org.apache.tuscany.spi.component.WorkContext;
import org.apache.tuscany.spi.extension.AtomicComponentExtension;
import org.apache.tuscany.spi.model.Operation;
import org.apache.tuscany.spi.wire.InboundWire;
import org.apache.tuscany.spi.wire.OutboundWire;
import org.apache.tuscany.spi.wire.TargetInvoker;
import org.apache.tuscany.spi.wire.WireService;
/**
* The Ruby component implementation.
*/
public class RubyComponent extends AtomicComponentExtension {
private final List<Class<?>> services;
private final Map<String, Object> properties;
private RubyScript rubyScript;
private String rubyClassName;
public RubyComponent(String name,
RubyScript rubyScript,
String rubyClassName,
List<Class<?>> services,
Map<String, Object> propValues,
CompositeComponent parent,
ScopeContainer scopeContainer,
WireService wireService,
WorkContext workContext) {
super(name, parent, scopeContainer, wireService, workContext, null, 0);
this.rubyScript = rubyScript;
this.rubyClassName = rubyClassName;
this.services = services;
this.scope = scopeContainer.getScope();
//this.properties = new HashMap<String, Object>();
this.properties = propValues;
}
public Object createInstance() throws ObjectCreationException {
Map<String, Object> context = new HashMap<String, Object>(getProperties());
for (List<OutboundWire> referenceWires : getOutboundWires().values()) {
for (OutboundWire wire : referenceWires) {
Object wireProxy = wireService.createProxy(wire);
//since all types that may be used in the reference interface may not be known to Rhino
//using the wireProxy as is will fail result in type conversion exceptions in cases where
//Rhino does not know enough of the tpypes used. Hence introduce a interceptor proxy,
//with weak typing (java.lang.Object) so that Rhino's call to the proxy succeeds. Then
//within this interceptor proxy perform data mediations required to correctly call the
//referenced service.
Class<?> businessInterface = wire.getServiceContract().getInterfaceClass();
RubyReferenceProxy interceptingProxy = new RubyReferenceProxy(businessInterface,
wireProxy,
rubyScript.getRubyEngine());
context.put(wire.getReferenceName(), interceptingProxy.createProxy());
}
}
Object instance = rubyScript.createScriptInstance(context, rubyClassName);
return instance;
}
public TargetInvoker createTargetInvoker(String targetName, Operation operation) {
/*Method[] methods = operation.getServiceContract().getInterfaceClass().getMethods();
Method method = findMethod(operation,
methods);*/
return new RubyInvoker(operation.getName(), this, operation.getOutputType().getPhysical().getClass());
}
// TODO: move all the following up to AtomicComponentExtension?
public List<Class<?>> getServiceInterfaces() {
return services;
}
public Map<String, Object> getProperties() {
return properties;
}
public RubyScriptInstance getTargetInstance() throws TargetException {
return (RubyScriptInstance) scopeContainer.getInstance(this);
}
public Object getServiceInstance() throws TargetException {
return getServiceInstance(null);
}
@SuppressWarnings("unchecked")
public Object getServiceInstance(String service) throws TargetException {
InboundWire wire = getInboundWire(service);
if (wire == null) {
TargetException e = new TargetException("ServiceDefinition not found"); // TODO better error message
e.setIdentifier(service);
throw e;
}
return wireService.createProxy(wire);
}
}