ChangeStateCommandInstruction.java

/**
 * Copyright 2015-2017 Linagora, Université Joseph Fourier, Floralis
 *
 * The present code is developed in the scope of the joint LINAGORA -
 * Université Joseph Fourier - Floralis research program and is designated
 * as a "Result" pursuant to the terms and conditions of the LINAGORA
 * - Université Joseph Fourier - Floralis research program. Each copyright
 * holder of Results enumerated here above fully & independently holds complete
 * ownership of the complete Intellectual Property rights applicable to the whole
 * of said Results, and may freely exploit it in any manner which does not infringe
 * the moral rights of the other copyright holders.
 *
 * Licensed 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 net.roboconf.core.commands;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import net.roboconf.core.ErrorCode;
import net.roboconf.core.model.ParsingError;
import net.roboconf.core.model.beans.Instance.InstanceStatus;

/**
 * @author Vincent Zurczak - Linagora
 */
public class ChangeStateCommandInstruction extends AbstractCommandInstruction {

	static final String PREFIX = "change";

	private InstanceStatus targetStatus;
	private String targetStatusAsString, instancePath;


	/**
	 * Constructor.
	 * @param context
	 * @param instruction
	 * @param line
	 */
	ChangeStateCommandInstruction( Context context, String instruction, int line ) {
		super( context, instruction, line );

		Pattern p = Pattern.compile( PREFIX + "\\s+status\\s+of\\s+(/.*)\\s+to\\b(.*)", Pattern.CASE_INSENSITIVE );
		Matcher m = p.matcher( instruction );
		if( m.matches()) {
			this.syntaxicallyCorrect = true;
			this.targetStatusAsString = m.group( 2 ).trim().toUpperCase().replace( ' ', '_' ).replace( "_AND_", "_" );
			this.targetStatus = InstanceStatus.exactStatus( this.targetStatusAsString );
			this.instancePath = m.group( 1 ).trim();
		}
	}


	/*
	 * (non-Javadoc)
	 * @see net.roboconf.core.commands.AbstractCommandInstruction#doValidate()
	 */
	@Override
	public List<ParsingError> doValidate() {

		List<ParsingError> result = new ArrayList<> ();
		if( this.targetStatus == null )
			result.add( error( ErrorCode.CMD_INVALID_INSTANCE_STATUS, "Invalid status: " + this.targetStatusAsString ));
		else if( ! this.targetStatus.isStable())
			result.add( error( ErrorCode.CMD_INSTABLE_INSTANCE_STATUS ));

		if( ! this.context.instanceExists( this.instancePath ))
			result.add( error( ErrorCode.CMD_NO_MATCHING_INSTANCE ));

		return result;
	}


	/**
	 * @return the targetStatus
	 */
	public InstanceStatus getTargetStatus() {
		return this.targetStatus;
	}


	/**
	 * @return the instancePath
	 */
	public String getInstancePath() {
		return this.instancePath;
	}
}