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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 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.engine.analytics.dataset;
import java.io.Serializable;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.base.JRBaseObjectFactory;
import net.sf.jasperreports.engine.type.CalculationEnum;
import net.sf.jasperreports.engine.util.JRClassLoader;
import net.sf.jasperreports.engine.util.JRCloneUtils;
/**
* @author Lucian Chirita ([email protected])
*/
public class BaseDataMeasure implements DataMeasure, Serializable
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
public static final String EXCEPTION_MESSAGE_KEY_MEASURE_INCREMENTER_LOAD_ERROR = "engine.analytics.dataset.measure.incrementer.load.error";
public static final String EXCEPTION_MESSAGE_KEY_MEASURE_VALUE_LOAD_ERROR = "engine.analytics.dataset.measure.value.load.error";
protected String name;
protected JRExpression labelExpression;
protected String valueClassName;
private transient Class valueClass;
protected JRExpression valueExpression;
protected CalculationEnum calculation = CalculationEnum.COUNT;
protected String incrementerFactoryClassName;
private transient Class incrementerFactoryClass;
public BaseDataMeasure()
{
}
public BaseDataMeasure(DataMeasure measure, JRBaseObjectFactory factory)
{
factory.put(measure, this);
this.name = measure.getName();
this.labelExpression = factory.getExpression(measure.getLabelExpression());
this.valueClassName = measure.getValueClassName();
this.valueExpression = factory.getExpression(measure.getValueExpression());
this.calculation = measure.getCalculation();
this.incrementerFactoryClassName = measure.getIncrementerFactoryClassName();
}
@Override
public String getName()
{
return name;
}
@Override
public JRExpression getLabelExpression()
{
return labelExpression;
}
@Override
public String getValueClassName()
{
return valueClassName;
}
protected void setValueClassName(String valueClassName)
{
this.valueClassName = valueClassName;
this.valueClass = null;
}
@Override
public Class getValueClass()
{
if (valueClass == null)
{
String className = JRClassLoader.getClassRealName(valueClassName);
if (className != null)
{
try
{
valueClass = JRClassLoader.loadClassForName(className);
}
catch (ClassNotFoundException e)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_MEASURE_VALUE_LOAD_ERROR,
(Object[])null,
e);
}
}
}
return valueClass;
}
@Override
public JRExpression getValueExpression()
{
return valueExpression;
}
@Override
public CalculationEnum getCalculation()
{
return calculation;
}
@Override
public String getIncrementerFactoryClassName()
{
return incrementerFactoryClassName;
}
@Override
public Class getIncrementerFactoryClass()
{
if (incrementerFactoryClass == null)
{
String className = JRClassLoader.getClassRealName(incrementerFactoryClassName);
if (className != null)
{
try
{
incrementerFactoryClass = JRClassLoader.loadClassForName(className);
}
catch (ClassNotFoundException e)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_MEASURE_INCREMENTER_LOAD_ERROR,
(Object[])null,
e);
}
}
}
return incrementerFactoryClass;
}
protected void setIncrementerFactoryClassName(String incrementerFactoryClassName)
{
this.incrementerFactoryClassName = incrementerFactoryClassName;
this.incrementerFactoryClass = null;
}
@Override
public Object clone()
{
BaseDataMeasure clone = null;
try
{
clone = (BaseDataMeasure) super.clone();
}
catch (CloneNotSupportedException e)
{
// never
throw new JRRuntimeException(e);
}
clone.labelExpression = JRCloneUtils.nullSafeClone(labelExpression);
clone.valueExpression = JRCloneUtils.nullSafeClone(valueExpression);
return clone;
}
}