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package org.apache.tuscany.container.js.rhino;
import java.lang.reflect.InvocationTargetException;
import org.apache.tuscany.core.context.QualifiedName;
import org.apache.tuscany.core.context.ScopeContext;
import org.apache.tuscany.core.invocation.Interceptor;
import org.apache.tuscany.core.invocation.TargetInvoker;
import org.apache.tuscany.core.message.Message;
public class RhinoTargetInvoker implements TargetInvoker {
private ScopeContext container;
private QualifiedName name;
private String operation;
private RhinoScript target;
public RhinoTargetInvoker(String serviceName, String operation, ScopeContext container) {
assert (serviceName != null) : "No service name specified";
assert (container != null) : "No scope container specified";
assert (operation != null) : "No operation specified";
this.name = new QualifiedName(serviceName);
this.container = container;
this.operation = operation;
}
public Object invokeTarget(Object payload) throws InvocationTargetException {
if (cacheable) {
if (target == null) {
target = (RhinoScript) container.getContext(name.getPartName()).getImplementationInstance();
}
return target.invoke(operation, payload);
} else {
return ((RhinoScript) container.getContext(name.getPartName()).getImplementationInstance())
.invoke(operation, payload);
}
}
private boolean cacheable;
public boolean isCacheable() {
return cacheable;
}
public void setCacheable(boolean val) {
cacheable = val;
}
public Message invoke(Message msg) {
try {
Object resp = invokeTarget(msg.getBody());
msg.setBody(resp);
} catch (InvocationTargetException e) {
msg.setBody(e.getCause());
} catch (Throwable e) {
msg.setBody(e);
}
return msg;
}
public void setNext(Interceptor next) {
throw new IllegalStateException("This interceptor must be the last interceptor in an interceptor chain");
}
public Object clone() {
try {
RhinoTargetInvoker invoker = (RhinoTargetInvoker) super.clone();
invoker.container = this.container;
invoker.cacheable = this.cacheable;
invoker.name = this.name;
invoker.operation = this.operation;
invoker.target = null;
return invoker;
} catch (CloneNotSupportedException e) {
return null; // will not happen
}
}
}
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