/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.formula.lvalues;
import org.pentaho.reporting.libraries.formula.EvaluationException;
import org.pentaho.reporting.libraries.formula.FormulaContext;
import org.pentaho.reporting.libraries.formula.typing.Type;
/**
* Creation-Date: 01.11.2006, 18:19:00
*
* @author Thomas Morgner
*/
public abstract class AbstractLValue implements LValue {
private static final LValue[] EMPTY_CHILDS = new LValue[ 0 ];
private transient FormulaContext context;
private static final long serialVersionUID = -8929559303303911502L;
private ParsePosition parsePosition;
protected AbstractLValue() {
}
public ParsePosition getParsePosition() {
return parsePosition;
}
public void setParsePosition( final ParsePosition parsePosition ) {
this.parsePosition = parsePosition;
}
public void initialize( final FormulaContext context ) throws EvaluationException {
this.context = context;
}
public FormulaContext getContext() {
if ( context == null ) {
throw new NullPointerException();
}
return context;
}
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
/**
* Returns any dependent lvalues (parameters and operands, mostly).
*
* @return
*/
public LValue[] getChildValues() {
return EMPTY_CHILDS;
}
/**
* Querying the value type is only valid *after* the value has been evaluated.
*
* @return
*/
public Type getValueType() {
return null;
}
}