Frames | No Frames |
1: /** 2: * ======================================== 3: * JFreeReport : a free Java report library 4: * ======================================== 5: * 6: * Project Info: http://reporting.pentaho.org/ 7: * 8: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * ------------ 26: * $Id: GetValueExpression.java 2725 2007-04-01 18:49:29Z taqua $ 27: * ------------ 28: * (C) Copyright 2000-2005, by Object Refinery Limited. 29: * (C) Copyright 2005-2007, by Pentaho Corporation. 30: */ 31: 32: package org.jfree.report.expressions.sys; 33: 34: import org.jfree.report.DataSourceException; 35: import org.jfree.report.expressions.AbstractExpression; 36: 37: /** 38: * Creation-Date: 02.12.2006, 22:07:57 39: * 40: * @author Thomas Morgner 41: */ 42: public class GetValueExpression extends AbstractExpression 43: { 44: private String field; 45: 46: public GetValueExpression() 47: { 48: } 49: 50: public GetValueExpression(final String field) 51: { 52: this.field = field; 53: } 54: 55: public String getField() 56: { 57: return field; 58: } 59: 60: public void setField(final String field) 61: { 62: this.field = field; 63: } 64: 65: /** 66: * Return the current expression value. <P> The value depends (obviously) on 67: * the expression implementation. 68: * 69: * @return the value of the function. 70: */ 71: public Object computeValue() throws DataSourceException 72: { 73: return getDataRow().get(getField()); 74: } 75: }