| /******************************************************************************* |
| * Copyright (c) 2004, 2007 Boeing. |
| * 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: |
| * Boeing - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osee.ote.message.condition; |
| |
| import org.eclipse.osee.ote.message.elements.StringElement; |
| |
| /** |
| * this condition checks to see if a {@link StringElement} is empty. Empty is defined as having the first byte/character |
| * of the element equal to zero. |
| * |
| * @author Ken J. Aguilar |
| */ |
| public class EmptyStringCondition extends AbstractCondition implements IDiscreteElementCondition<Character> { |
| |
| public final StringElement element; |
| private char lastValue; |
| private final int offset; |
| |
| public EmptyStringCondition(StringElement element) { |
| this.element = element; |
| offset = element.getMsgData().getMem().getOffset() + element.getByteOffset(); |
| } |
| |
| @Override |
| public Character getLastCheckValue() { |
| return lastValue; |
| } |
| |
| @Override |
| public boolean check() { |
| lastValue = (char) element.getMsgData().getMem().getData()[offset]; |
| return lastValue == (char) 0; |
| } |
| |
| } |