net.sf.jasperreports.charts.base.JRBaseDataRange Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.charts.base;
import java.io.Serializable;
import net.sf.jasperreports.charts.JRDataRange;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.JRExpressionCollector;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.base.JRBaseObjectFactory;
import net.sf.jasperreports.engine.util.JRCloneUtils;
/**
* An immutable instantiation of a {@link net.sf.jasperreports.charts.JRDataRange JRDataRange}, suitable for holding
* a range.
*
* @author Barry Klawans ([email protected])
*/
public class JRBaseDataRange implements JRDataRange, Serializable
{
/**
*
*/
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
/**
* The expression used to calculate the lower bound of the range.
*/
protected JRExpression lowExpression;
/**
* The expression used to calculate the upper bound of the range.
*/
protected JRExpression highExpression;
/**
* Constructs a copy of an existing range.
*
* @param dataRange the range to copy
*/
public JRBaseDataRange(JRDataRange dataRange)
{
if (dataRange != null)
{
this.lowExpression = dataRange.getLowExpression();
this.highExpression = dataRange.getHighExpression();
}
}
/**
* Creates a copy of an existing range and registers all of the expressions
* with a factory object. Once the expressions have been registered they will
* be included when the report is compiled.
*
* @param dataRange the range to copy
* @param factory the factory to register the expressions with
*/
public JRBaseDataRange(JRDataRange dataRange, JRBaseObjectFactory factory)
{
factory.put(dataRange, this);
lowExpression = factory.getExpression(dataRange.getLowExpression());
highExpression = factory.getExpression(dataRange.getHighExpression());
}
@Override
public JRExpression getLowExpression()
{
return lowExpression;
}
@Override
public JRExpression getHighExpression()
{
return highExpression;
}
/**
* Registers all of the expressions with the collector. If the expressions
* have been registered with one of the report's factory they will be included
* when the report is compiled.
*
* @param collector the expression collector to use
*/
public void collectExpressions(JRExpressionCollector collector)
{
collector.collect(this);
}
@Override
public Object clone()
{
JRBaseDataRange clone = null;
try
{
clone = (JRBaseDataRange)super.clone();
}
catch (CloneNotSupportedException e)
{
throw new JRRuntimeException(e);
}
clone.lowExpression = JRCloneUtils.nullSafeClone(lowExpression);
clone.highExpression = JRCloneUtils.nullSafeClone(highExpression);
return clone;
}
}