/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. 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 <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.engine.fill;
import java.math.BigDecimal;
import net.sf.jasperreports.engine.type.CalculationEnum;
import net.sf.jasperreports.engine.util.BigDecimalUtils;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRBigDecimalIncrementerFactory.java 3693 2010-04-06 14:43:13Z shertage $
*/
public final class JRBigDecimalIncrementerFactory extends JRAbstractExtendedIncrementerFactory
{
/**
*
*/
protected static final BigDecimal ZERO = BigDecimal.ZERO;
protected static final BigDecimal ONE = BigDecimal.ONE;
/**
*
*/
private static JRBigDecimalIncrementerFactory mainInstance = new JRBigDecimalIncrementerFactory();
/**
*
*/
private JRBigDecimalIncrementerFactory()
{
}
/**
*
*/
public static JRBigDecimalIncrementerFactory getInstance()
{
return mainInstance;
}
/**
* @deprecated Replaced by {@link #getExtendedIncrementer(CalculationEnum)}
*/
public JRExtendedIncrementer getExtendedIncrementer(byte calculation)
{
return getExtendedIncrementer(CalculationEnum.getByValue(calculation));
}
/**
*
*/
public JRExtendedIncrementer getExtendedIncrementer(CalculationEnum calculation)
{
JRExtendedIncrementer incrementer = null;
switch (calculation)
{
case COUNT :
{
incrementer = JRBigDecimalCountIncrementer.getInstance();
break;
}
case SUM :
{
incrementer = JRBigDecimalSumIncrementer.getInstance();
break;
}
case AVERAGE :
{
incrementer = JRBigDecimalAverageIncrementer.getInstance();
break;
}
case LOWEST :
case HIGHEST :
{
incrementer = JRComparableIncrementerFactory.getInstance().getExtendedIncrementer(calculation);
break;
}
case STANDARD_DEVIATION :
{
incrementer = JRBigDecimalStandardDeviationIncrementer.getInstance();
break;
}
case VARIANCE :
{
incrementer = JRBigDecimalVarianceIncrementer.getInstance();
break;
}
case DISTINCT_COUNT :
{
incrementer = JRBigDecimalDistinctCountIncrementer.getInstance();
break;
}
case SYSTEM :
case NOTHING :
case FIRST :
default :
{
incrementer = JRDefaultIncrementerFactory.getInstance().getExtendedIncrementer(calculation);
break;
}
}
return incrementer;
}
}
/**
*
*/
final class JRBigDecimalCountIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRBigDecimalCountIncrementer mainInstance = new JRBigDecimalCountIncrementer();
/**
*
*/
private JRBigDecimalCountIncrementer()
{
}
/**
*
*/
public static JRBigDecimalCountIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
BigDecimal value = (BigDecimal)variable.getIncrementedValue();
if (value == null || variable.isInitialized())
{
value = JRBigDecimalIncrementerFactory.ZERO;
}
if (expressionValue == null)
{
return value;
}
return value.add(JRBigDecimalIncrementerFactory.ONE);
}
public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider)
{
BigDecimal value = (BigDecimal)calculable.getIncrementedValue();
BigDecimal combineValue = (BigDecimal) calculableValue.getValue();
if (value == null || calculable.isInitialized())
{
value = JRBigDecimalIncrementerFactory.ZERO;
}
if (combineValue == null)
{
return value;
}
return value.add(combineValue);
}
public Object initialValue()
{
return JRBigDecimalIncrementerFactory.ZERO;
}
}
/**
*
*/
final class JRBigDecimalDistinctCountIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRBigDecimalDistinctCountIncrementer mainInstance = new JRBigDecimalDistinctCountIncrementer();
/**
*
*/
private JRBigDecimalDistinctCountIncrementer()
{
}
/**
*
*/
public static JRBigDecimalDistinctCountIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
DistinctCountHolder holder =
(DistinctCountHolder)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_COUNT));
if (variable.isInitialized())
{
holder.init();
}
return new BigDecimal(holder.getCount());
}
public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider)
{
DistinctCountHolder holder =
(DistinctCountHolder)valueProvider.getValue(calculable.getHelperVariable(JRCalculable.HELPER_COUNT));
return new BigDecimal(holder.getCount());
}
public Object initialValue()
{
return JRBigDecimalIncrementerFactory.ZERO;
}
}
/**
*
*/
final class JRBigDecimalSumIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRBigDecimalSumIncrementer mainInstance = new JRBigDecimalSumIncrementer();
/**
*
*/
private JRBigDecimalSumIncrementer()
{
}
/**
*
*/
public static JRBigDecimalSumIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
BigDecimal value = (BigDecimal)variable.getIncrementedValue();
BigDecimal newValue = (BigDecimal)expressionValue;
if (newValue == null)
{
if (variable.isInitialized())
{
return null;
}
return value;
}
if (value == null || variable.isInitialized())
{
value = JRBigDecimalIncrementerFactory.ZERO;
}
return value.add(newValue);
}
public Object initialValue()
{
return JRBigDecimalIncrementerFactory.ZERO;
}
}
/**
*
*/
final class JRBigDecimalAverageIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRBigDecimalAverageIncrementer mainInstance = new JRBigDecimalAverageIncrementer();
/**
*
*/
private JRBigDecimalAverageIncrementer()
{
}
/**
*
*/
public static JRBigDecimalAverageIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
if (expressionValue == null)
{
if (variable.isInitialized())
{
return null;
}
return variable.getValue();
}
BigDecimal countValue = (BigDecimal)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_COUNT));
BigDecimal sumValue = (BigDecimal)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_SUM));
return BigDecimalUtils.divide(sumValue, countValue);
}
public Object initialValue()
{
return JRBigDecimalIncrementerFactory.ZERO;
}
}
/**
*
*/
final class JRBigDecimalStandardDeviationIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRBigDecimalStandardDeviationIncrementer mainInstance = new JRBigDecimalStandardDeviationIncrementer();
/**
*
*/
private JRBigDecimalStandardDeviationIncrementer()
{
}
/**
*
*/
public static JRBigDecimalStandardDeviationIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
if (expressionValue == null)
{
if (variable.isInitialized())
{
return null;
}
return variable.getValue();
}
Number varianceValue = (Number)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_VARIANCE));
return new BigDecimal( Math.sqrt(varianceValue.doubleValue()) );
}
public Object initialValue()
{
return JRBigDecimalIncrementerFactory.ZERO;
}
}
/**
*
*/
final class JRBigDecimalVarianceIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRBigDecimalVarianceIncrementer mainInstance = new JRBigDecimalVarianceIncrementer();
/**
*
*/
private JRBigDecimalVarianceIncrementer()
{
}
/**
*
*/
public static JRBigDecimalVarianceIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
BigDecimal value = (BigDecimal)variable.getIncrementedValue();
BigDecimal newValue = (BigDecimal)expressionValue;
if (newValue == null)
{
if (variable.isInitialized())
{
return null;
}
return value;
}
else if (value == null || variable.isInitialized())
{
return JRBigDecimalIncrementerFactory.ZERO;
}
else
{
BigDecimal countValue = (BigDecimal)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_COUNT));
BigDecimal sumValue = (BigDecimal)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_SUM));
BigDecimal x1 = BigDecimalUtils.divide(
countValue.subtract(JRBigDecimalIncrementerFactory.ONE).multiply(value),
countValue);
BigDecimal avg = BigDecimalUtils.divide(sumValue, countValue);
BigDecimal avg2 = avg.subtract(newValue);
return x1.add(
BigDecimalUtils.divide(avg2.multiply(avg2),
countValue.subtract(JRBigDecimalIncrementerFactory.ONE)));
}
}
public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider)
{
BigDecimal value = (BigDecimal)calculable.getIncrementedValue();
if (calculableValue.getValue() == null)
{
if (calculable.isInitialized())
{
return null;
}
return value;
}
else if (value == null || calculable.isInitialized())
{
return calculableValue.getIncrementedValue();
}
BigDecimal v1 = value;
BigDecimal c1 = (BigDecimal) valueProvider.getValue(calculable.getHelperVariable(JRCalculable.HELPER_COUNT));
BigDecimal s1 = (BigDecimal) valueProvider.getValue(calculable.getHelperVariable(JRCalculable.HELPER_SUM));
BigDecimal v2 = (BigDecimal) calculableValue.getIncrementedValue();
BigDecimal c2 = (BigDecimal) valueProvider.getValue(calculableValue.getHelperVariable(JRCalculable.HELPER_COUNT));
BigDecimal s2 = (BigDecimal) valueProvider.getValue(calculableValue.getHelperVariable(JRCalculable.HELPER_SUM));
c1 = c1.subtract(c2);
s1 = s1.subtract(s2);
BigDecimal c = c1.add(c2);
BigDecimal t1 = c1.multiply(c2).multiply(c).multiply(c1.multiply(v1).add(c2.multiply(v2)));
BigDecimal t2 = c1.multiply(s2).subtract(c2.multiply(s1));
BigDecimal t3 = c1.multiply(c2).multiply(c).multiply(c);
return BigDecimalUtils.divide(t1.add(t2.multiply(t2)), t3);
}
public Object initialValue()
{
return JRBigDecimalIncrementerFactory.ZERO;
}
}