org.eclipse.om2m.sdt/org.eclipse.om2m.sdt.api/src/main/java/org/eclipse/om2m/sdt/args/Command.java

/*******************************************************************************
 * Copyright (c) 2014, 2016 Orange.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.eclipse.om2m.sdt.args;

import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;

import org.eclipse.om2m.sdt.Action;
import org.eclipse.om2m.sdt.Arg;
import org.eclipse.om2m.sdt.Identifiers;
import org.eclipse.om2m.sdt.exceptions.AccessException;
import org.eclipse.om2m.sdt.exceptions.ActionException;
import org.eclipse.om2m.sdt.utils.Activator;

public abstract class Command extends Action {

	public Command(String name, final Identifiers identifiers) {
		super(name, identifiers);
	}

	public Command(String name, Collection<Arg> args, final Identifiers identifiers) {
		super(name, identifiers);
		if (args != null)
			for (Arg arg : args)
				addArg(arg);
	}
	
//	protected void check() throws ActionException, AccessException {
//		if (! Activator.isGrantedAccess(this))
//			throw new AccessException("No access allowed for action " + getName());
//	}
	
	/**
	 * This method is used to invoke the action in a generic way.
	 * Typically, it is used by the SDT IPE
	 * 
	 * @param arguments arguments to be used
	 * @return output
	 * @throws ActionException
	 * @throws AccessException
	 */
	protected Object invoke() throws ActionException, AccessException {
		if (! Activator.isGrantedAccess(this))
			throw new AccessException("No access allowed for action " + getName());
		return doInvoke();
	}

	public Object invoke(Map<String, Object> arguments) throws ActionException, AccessException {
		if (! Activator.isGrantedAccess(this))
			throw new AccessException("No access allowed for action " + getName());
		if (arguments != null) {
			for (Entry<String, Object> entry : arguments.entrySet()) {
				Arg arg = getArg(entry.getKey());
				if (arg == null)
					throw new ActionException("Unknown arg " + entry.getKey());
				((ValuedArg<Object>)arg).setValue(entry.getValue());
			}
		}
		return doInvoke();
	}

	protected abstract Object doInvoke() throws ActionException;

}