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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.report.pentaho.parser.rpt;
import com.sun.star.report.OfficeToken;
import com.sun.star.report.pentaho.OfficeNamespaces;
import org.jfree.report.expressions.Expression;
import org.jfree.report.expressions.FormulaExpression;
import org.jfree.report.expressions.FormulaFunction;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Parses a named expression. These expressions are encountered on reports and
* groups and compute global values. Expressions must have an unique name.
*
* @author Thomas Morgner
*/
public class FunctionReadHandler extends AbstractXmlReadHandler
{
private Expression expression;
public FunctionReadHandler()
{
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs)
throws SAXException
{
final String formula = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "formula");
if (formula == null)
{
throw new ParseException("Required attribute 'formula' is missing", getLocator());
}
final String name = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "name");
if (name == null)
{
throw new ParseException("Required attribute 'name' is missing", getLocator());
}
final String initialFormula = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "initial-formula");
final String deepTraversing = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "deep-traversing");
if (initialFormula != null)
{
final FormulaFunction function = new FormulaFunction();
function.setInitial(initialFormula);
function.setFormula(formula);
this.expression = function;
}
else
{
final FormulaExpression expression = new FormulaExpression();
expression.setFormula(formula);
this.expression = expression;
}
expression.setName(name);
expression.setDeepTraversing(OfficeToken.TRUE.equals(deepTraversing));
final String preEvaluated = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "pre-evaluated");
expression.setPrecompute(OfficeToken.TRUE.equals(preEvaluated));
}
/**
* Returns the object for this element or null, if this element does not
* create an object.
*
* @return the object.
*/
public Object getObject()
throws SAXException
{
return getExpression();
}
public Expression getExpression()
{
return expression;
}
}
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