JRByteIncrementerFactory.java
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net.sf.jasperreports.engine.fill |
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/*
* ============================================================================
* GNU Lesser General Public License
* ============================================================================
*
* JasperReports - Free Java report-generating library.
* Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* JasperSoft Corporation
* 303 Second Street, Suite 450 North
* San Francisco, CA 94107
* http://www.jaspersoft.com
*/
package net.sf.jasperreports.engine.fill;
import net.sf.jasperreports.engine.JRVariable;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRByteIncrementerFactory.java 1347 2006-07-19 12:31:07Z teodord $
*/
public class JRByteIncrementerFactory extends JRAbstractExtendedIncrementerFactory
{
/**
*
*/
protected static final Byte ZERO = new Byte((byte)0);
/**
*
*/
private static JRByteIncrementerFactory mainInstance = new JRByteIncrementerFactory();
/**
*
*/
private JRByteIncrementerFactory()
{
}
/**
*
*/
public static JRByteIncrementerFactory getInstance()
{
return mainInstance;
}
/**
*
*/
public JRExtendedIncrementer getExtendedIncrementer(byte calculation)
{
JRExtendedIncrementer incrementer = null;
switch (calculation)
{
case JRVariable.CALCULATION_COUNT :
{
incrementer = JRByteCountIncrementer.getInstance();
break;
}
case JRVariable.CALCULATION_SUM :
{
incrementer = JRByteSumIncrementer.getInstance();
break;
}
case JRVariable.CALCULATION_AVERAGE :
{
incrementer = JRByteAverageIncrementer.getInstance();
break;
}
case JRVariable.CALCULATION_LOWEST :
case JRVariable.CALCULATION_HIGHEST :
{
incrementer = JRComparableIncrementerFactory.getInstance().getExtendedIncrementer(calculation);
break;
}
case JRVariable.CALCULATION_STANDARD_DEVIATION :
{
incrementer = JRByteStandardDeviationIncrementer.getInstance();
break;
}
case JRVariable.CALCULATION_VARIANCE :
{
incrementer = JRByteVarianceIncrementer.getInstance();
break;
}
case JRVariable.CALCULATION_DISTINCT_COUNT :
{
incrementer = JRByteDistinctCountIncrementer.getInstance();
break;
}
case JRVariable.CALCULATION_SYSTEM :
case JRVariable.CALCULATION_NOTHING :
case JRVariable.CALCULATION_FIRST :
default :
{
incrementer = JRDefaultIncrementerFactory.getInstance().getExtendedIncrementer(calculation);
break;
}
}
return incrementer;
}
}
/**
*
*/
class JRByteCountIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRByteCountIncrementer mainInstance = new JRByteCountIncrementer();
/**
*
*/
private JRByteCountIncrementer()
{
}
/**
*
*/
public static JRByteCountIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
Number value = (Number)variable.getIncrementedValue();
if (value == null || variable.isInitialized())
{
value = JRByteIncrementerFactory.ZERO;
}
if (expressionValue == null)
{
return value;
}
return new Byte((byte)(value.byteValue() + 1));
}
public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider)
{
Number value = (Number)calculable.getIncrementedValue();
Number combineValue = (Number) calculableValue.getValue();
if (value == null || calculable.isInitialized())
{
value = JRByteIncrementerFactory.ZERO;
}
if (combineValue == null)
{
return value;
}
return new Byte((byte) (value.byteValue() + combineValue.byteValue()));
}
public Object initialValue()
{
return JRByteIncrementerFactory.ZERO;
}
}
/**
*
*/
class JRByteDistinctCountIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRByteDistinctCountIncrementer mainInstance = new JRByteDistinctCountIncrementer();
/**
*
*/
private JRByteDistinctCountIncrementer()
{
}
/**
*
*/
public static JRByteDistinctCountIncrementer 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 Byte((byte)holder.getCount());
}
public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider)
{
DistinctCountHolder holder =
(DistinctCountHolder)valueProvider.getValue(calculable.getHelperVariable(JRCalculable.HELPER_COUNT));
return new Byte((byte)holder.getCount());
}
public Object initialValue()
{
return JRByteIncrementerFactory.ZERO;
}
}
/**
*
*/
class JRByteSumIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRByteSumIncrementer mainInstance = new JRByteSumIncrementer();
/**
*
*/
private JRByteSumIncrementer()
{
}
/**
*
*/
public static JRByteSumIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
Number value = (Number)variable.getIncrementedValue();
Number newValue = (Number)expressionValue;
if (newValue == null)
{
if (variable.isInitialized())
{
return null;
}
return value;
}
if (value == null || variable.isInitialized())
{
value = JRByteIncrementerFactory.ZERO;
}
return new Byte((byte)(value.byteValue() + newValue.byteValue()));
}
public Object initialValue()
{
return JRByteIncrementerFactory.ZERO;
}
}
/**
*
*/
class JRByteAverageIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRByteAverageIncrementer mainInstance = new JRByteAverageIncrementer();
/**
*
*/
private JRByteAverageIncrementer()
{
}
/**
*
*/
public static JRByteAverageIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
if (expressionValue == null)
{
if (variable.isInitialized())
{
return null;
}
return variable.getValue();
}
Number countValue = (Number)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_COUNT));
Number sumValue = (Number)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_SUM));
return new Byte((byte)(sumValue.byteValue() / countValue.byteValue()));
}
public Object initialValue()
{
return JRByteIncrementerFactory.ZERO;
}
}
/**
*
*/
class JRByteStandardDeviationIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRByteStandardDeviationIncrementer mainInstance = new JRByteStandardDeviationIncrementer();
/**
*
*/
private JRByteStandardDeviationIncrementer()
{
}
/**
*
*/
public static JRByteStandardDeviationIncrementer 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 Byte( (byte)Math.sqrt(varianceValue.doubleValue()) );
}
public Object initialValue()
{
return JRByteIncrementerFactory.ZERO;
}
}
/**
*
*/
class JRByteVarianceIncrementer extends JRAbstractExtendedIncrementer
{
/**
*
*/
private static JRByteVarianceIncrementer mainInstance = new JRByteVarianceIncrementer();
/**
*
*/
private JRByteVarianceIncrementer()
{
}
/**
*
*/
public static JRByteVarianceIncrementer getInstance()
{
return mainInstance;
}
/**
*
*/
public Object increment(
JRCalculable variable,
Object expressionValue,
AbstractValueProvider valueProvider
)
{
Number value = (Number)variable.getIncrementedValue();
Number newValue = (Number)expressionValue;
if (newValue == null)
{
if (variable.isInitialized())
{
return null;
}
return value;
}
else if (value == null || variable.isInitialized())
{
return JRByteIncrementerFactory.ZERO;
}
else
{
Number countValue = (Number)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_COUNT));
Number sumValue = (Number)valueProvider.getValue(variable.getHelperVariable(JRCalculable.HELPER_SUM));
return
new Byte((byte)(
(countValue.byteValue() - 1) * value.byteValue() / countValue.byteValue() +
( sumValue.byteValue() / countValue.byteValue() - newValue.byteValue() ) *
( sumValue.byteValue() / countValue.byteValue() - newValue.byteValue() ) /
(countValue.byteValue() - 1)
));
}
}
public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider)
{
Number value = (Number)calculable.getIncrementedValue();
if (calculableValue.getValue() == null)
{
if (calculable.isInitialized())
{
return null;
}
return value;
}
else if (value == null || calculable.isInitialized())
{
return new Byte(((Number) calculableValue.getIncrementedValue()).byteValue());
}
float v1 = value.floatValue();
float c1 = ((Number) valueProvider.getValue(calculable.getHelperVariable(JRCalculable.HELPER_COUNT))).floatValue();
float s1 = ((Number) valueProvider.getValue(calculable.getHelperVariable(JRCalculable.HELPER_SUM))).floatValue();
float v2 = ((Number) calculableValue.getIncrementedValue()).floatValue();
float c2 = ((Number) valueProvider.getValue(calculableValue.getHelperVariable(JRCalculable.HELPER_COUNT))).floatValue();
float s2 = ((Number) valueProvider.getValue(calculableValue.getHelperVariable(JRCalculable.HELPER_SUM))).floatValue();
c1 -= c2;
s1 -= s2;
float c = c1 + c2;
return new Byte((byte) (
c1 / c * v1 +
c2 / c * v2 +
c2 / c1 * s1 / c * s1 / c +
c1 / c2 * s2 / c * s2 / c -
2 * s1 / c * s2 /c
));
}
public Object initialValue()
{
return JRByteIncrementerFactory.ZERO;
}
}
The table below shows all metrics for JRByteIncrementerFactory.java.




