org.eclipse.viatra2.gui/src/org/eclipse/viatra2/frameworkgui/views/console/commands/xform/RunRule.java

/*******************************************************************************
 * Copyright (c) 2008-2010, Istvan Rath and Daniel Varro
 * 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
 *
 * Contributors:
 *   Istvan Rath - initial API and implementation
 *******************************************************************************/

package org.eclipse.viatra2.frameworkgui.views.console.commands.xform;

import java.util.List;

import org.eclipse.viatra2.framework.IFramework;
import org.eclipse.viatra2.frameworkgui.views.console.commands.IVIATRAConsoleCommandProvider;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.definitions.Machine;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.definitions.Rule;

/**
 * VIATRA2 console command to facilitate the execution of a GTASM machine.
 * @author istvan rath
 *
 */
public class RunRule extends AbstractRunnerCommand implements IVIATRAConsoleCommandProvider {

	
	public void executeCommand(IFramework fw, List<String> parameters) {
		// 0. check if we have exactly two parameters
		if (parameters.size()!=2) {
			fw.getLogger().error("[RunRule] Wrong number of parameters supplied.");
			return;
		}
		// 1. check if machine exists in the framework and is runnable
		String ruleFQN = parameters.get(0);
		// try to get the machine's FQN
		// rule's name is the last segment
		if (ruleFQN.indexOf(".")<0) {
			fw.getLogger().error("[RunRule] rule FQN does not contain at least one dot (.)");
			return;
		}
		String ruleName = ruleFQN.substring(ruleFQN.lastIndexOf(".")+1);
		if (ruleName.length()<1) {
			fw.getLogger().error("[RunRule] rule name empty.");
			return;
		}
		String machineFQN = ruleFQN.substring(0, ruleFQN.lastIndexOf("."));
		Machine m = (Machine)fw.getMachineByFQN(machineFQN);
		if (m==null) {
			fw.getLogger().error("[RunRule] machine "+machineFQN+" not found.");
			return;
		}
		
		Object entrypoint = null;
		
		for (Rule r : m.getAsmRuleDefinitions())
		{
			if (r.getName().equals(ruleName)) {
				entrypoint = r;
				break;
			}
		}
		if (entrypoint==null) {
			fw.getLogger().error("[RunRule] rule "+ruleName+" not found.");
			return;
		}
		
		commenceRunning(fw, entrypoint, parameters.get(1), ruleName, false);
	}

	public String getCommandSignature() {
		return "runrule(ruleFQN,parameterMappings)";
	}

	public String getDescription() {
		return "Executes a GTASM Rule in a normal VIATRA2 transaction.";
	}

	public String getHelpText() {
		return "Use runrule(<<rule fqn>>,<<parametermapping>>) to execute a GTASM rule in a normal transaction.\n"+
		"Parameter mappings take the following syntax: <<parametername=value>> and are separated by ; characters.\n"+
		"Example: runrule(helloworld.sayhello, target=John;message=Hello)";
	}

}