/*******************************************************************************
* This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* Peter Smith
*******************************************************************************/
package org.boris.xlloop.handler;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.boris.xlloop.IFunctionContext;
import org.boris.xlloop.IFunctionHandler;
import org.boris.xlloop.RequestException;
import org.boris.xlloop.xloper.XLoper;
public class CompositeFunctionHandler implements IFunctionHandler
{
private List handlers = new ArrayList();
public void add(IFunctionHandler h) {
handlers.add(h);
}
public void remove(IFunctionHandler h) {
handlers.remove(h);
}
public XLoper execute(IFunctionContext context, String name, XLoper[] args) throws RequestException {
for (Iterator i = handlers.iterator(); i.hasNext();) {
IFunctionHandler h = (IFunctionHandler) i.next();
if (h.hasFunction(name)) {
return h.execute(context, name, args);
}
}
throw new RequestException("#Unknown function: " + name);
}
public boolean hasFunction(String name) {
for (Iterator i = handlers.iterator(); i.hasNext();) {
IFunctionHandler h = (IFunctionHandler) i.next();
if (h.hasFunction(name)) {
return true;
}
}
return false;
}
}