1.用背景圖的方法,網上有很多介紹這種方式的，這里就不說了
2.用自定于數據源的方式(JRBeanCollectionDataSource),這個辦法不錯，但是每個報表都要定義一個數據源類，我嫌麻煩。
3.只好修改jasper的源代碼了,我修改了net.sf.jasperreports.engine.fill.JRFillDataset.java,(1.1.1 版的),改動的很少，如下所示。
覆蓋源代碼后，重新編譯，打包。在報表中只要加入參數PAGE_MIN_LINE(Integer)=你要的行數就可以了
/*
* ============================================================================
* GNU Lesser General Public License
* ============================================================================
*
* JasperReports - Free Java report-generating library.
* Copyright (C) 2001-2005 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 java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.Set;
import net.sf.jasperreports.engine.JRAbstractScriptlet;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRDataset;
import net.sf.jasperreports.engine.JRDefaultScriptlet;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.JRField;
import net.sf.jasperreports.engine.JRGroup;
import net.sf.jasperreports.engine.JRParameter;
import net.sf.jasperreports.engine.JRQuery;
import net.sf.jasperreports.engine.JRResultSetDataSource;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JRVariable;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.design.JRDefaultCompiler;
import net.sf.jasperreports.engine.design.JRDesignVariable;
import net.sf.jasperreports.engine.util.JRClassLoader;
import net.sf.jasperreports.engine.util.JRQueryExecuter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Lucian Chirita (lucianc@users.sourceforge.net)
* @version $Id: JRFillDataset.java,v 1.8 2005/11/28 10:23:24 teodord Exp $
*/
public class JRFillDataset implements JRDataset
{
private static final Log log = LogFactory.getLog(JRBaseFiller.class);
/**
* The filler that created this object.
*/
private final JRBaseFiller filler;
/**
* The template dataset.
*/
private final JRDataset parent;
/**
* Whether this is the main dataset of the report.
*/
private final boolean isMain;
/**
* The dataset query.
*/
protected JRQuery query = null;
/**
* The dataset parameter.
*/
protected JRFillParameter[] parameters = null;
/**
* The dataset parameters indexed by name.
*/
protected Map parametersMap = null;
/**
* The dataset fields.
*/
protected JRFillField[] fields = null;
/**
* The dataset fields indexed by name.
*/
protected Map fieldsMap = null;
/**
* The dataset variables.
*/
protected JRFillVariable[] variables = null;
/**
* The dataset variables indexed by name.
*/
protected Map variablesMap = null;
/**
* Set of {@link VariableCalculationReq VariableCalculationReq} objects.
*/
protected Set variableCalculationReqs;
/**
* The element datasets.
*/
protected JRFillElementDataset[] elementDatasets;
/**
* Used to save the original element datasets when
* {@link #filterElementDatasets(JRFillElementDataset) filterElementDatasets} is called.
*/
protected JRFillElementDataset[] origElementDatasets;
/**
* The dataset groups.
*/
protected JRFillGroup[] groups = null;
/**
* The resource bundle base name.
*/
protected String resourceBundleBaseName = null;
/**
* The resource missing handle type.
*/
protected byte whenResourceMissingType;
/**
* The scriptlet class name.
*/
protected String scriptletClassName = null;
/**
* The scriptlet class.
*/
protected Class scriptletClass = null;
/**
* The value of the {@link JRParameter#REPORT_MAX_COUNT max count} parameter.
*/
protected Integer reportMaxCount = null;
/**
* The data source.
*/
protected JRDataSource dataSource = null;
/**
* The {@link Locale Locale} to be used by the dataset.
*/
protected Locale locale = null;
/**
* The loaded resource bundle.
*/
protected ResourceBundle resourceBundle = null;
/**
* The cursor used when iterating the data source.
*/
protected int reportCount = 0;
/**
* The calculator used by the dataset.
*/
protected JRCalculator calculator = null;
/**
* The scriptlet used by the dataset.
*/
protected JRAbstractScriptlet scriptlet = null;
/**
* The statement used to fire the query.
*/
protected PreparedStatement dataSourceStatement;
private ResultSet dataSourceResultSet;
//////////////////////////////////////////add by super.wang
protected int vitalCount = 0;
protected Integer pageMinLine=null;
//////////////////////////////////////////add by super.end
/**
* Creates a fill dataset object.
* @param filler the filelr
* @param dataset the template dataset
* @param factory the fill object factory
*/
protected JRFillDataset(JRBaseFiller filler, JRDataset dataset, JRFillObjectFactory factory)
{
factory.put(dataset, this);
this.filler = filler;
this.parent = dataset;
this.isMain = dataset.isMainDataset();
scriptletClassName = dataset.getScriptletClass();
resourceBundleBaseName = dataset.getResourceBundle();
whenResourceMissingType = dataset.getWhenResourceMissingType();
query = dataset.getQuery();
setParameters(dataset, factory);
setFields(dataset, factory);
setVariables(dataset, factory);
setGroups(dataset, factory);
}
private void setParameters(JRDataset dataset, JRFillObjectFactory factory)
{
JRParameter[] jrParameters = dataset.getParameters();
if (jrParameters != null && jrParameters.length > 0)
{
parameters = new JRFillParameter[jrParameters.length];
parametersMap = new HashMap();
for (int i = 0; i < parameters.length; i++)
{
parameters[i] = factory.getParameter(jrParameters[i]);
parametersMap.put(parameters[i].getName(), parameters[i]);
}
}
}
private void setGroups(JRDataset dataset, JRFillObjectFactory factory)
{
JRGroup[] jrGroups = dataset.getGroups();
if (jrGroups != null && jrGroups.length > 0)
{
groups = new JRFillGroup[jrGroups.length];
for (int i = 0; i < groups.length; i++)
{
groups[i] = factory.getGroup(jrGroups[i]);
}
}
}
private void setVariables(JRDataset dataset, JRFillObjectFactory factory)
{
JRVariable[] jrVariables = dataset.getVariables();
if (jrVariables != null && jrVariables.length > 0)
{
List variableList = new ArrayList(jrVariables.length * 3);
variablesMap = new HashMap();
for (int i = 0; i < jrVariables.length; i++)
{
addVariable(jrVariables[i], variableList, factory);
}
setVariables(variableList);
}
}
private JRFillVariable addVariable(JRVariable parentVariable, List variableList, JRFillObjectFactory factory)
{
JRFillVariable variable = factory.getVariable(parentVariable);
byte calculation = variable.getCalculation();
switch (calculation)
{
case JRVariable.CALCULATION_AVERAGE:
case JRVariable.CALCULATION_VARIANCE:
{
JRVariable countVar = createHelperVariable(parentVariable, "_COUNT", JRVariable.CALCULATION_COUNT);
JRFillVariable fillCountVar = addVariable(countVar, variableList, factory);
variable.setHelperVariable(fillCountVar, JRCalculable.HELPER_COUNT);
JRVariable sumVar = createHelperVariable(parentVariable, "_SUM", JRVariable.CALCULATION_SUM);
JRFillVariable fillSumVar = addVariable(sumVar, variableList, factory);
variable.setHelperVariable(fillSumVar, JRCalculable.HELPER_SUM);
break;
}
case JRVariable.CALCULATION_STANDARD_DEVIATION:
{
JRVariable varianceVar = createHelperVariable(parentVariable, "_VARIANCE", JRVariable.CALCULATION_VARIANCE);
JRFillVariable fillVarianceVar = addVariable(varianceVar, variableList, factory);
variable.setHelperVariable(fillVarianceVar, JRCalculable.HELPER_VARIANCE);
break;
}
}
variableList.add(variable);
return variable;
}
private JRVariable createHelperVariable(JRVariable variable, String nameSuffix, byte calculation)
{
JRDesignVariable helper = new JRDesignVariable();
helper.setName(variable.getName() + nameSuffix);
helper.setValueClassName(variable.getValueClassName());
helper.setIncrementerFactoryClassName(variable.getIncrementerFactoryClassName());
helper.setResetType(variable.getResetType());
helper.setResetGroup(variable.getResetGroup());
helper.setIncrementType(variable.getIncrementType());
helper.setIncrementGroup(variable.getIncrementGroup());
helper.setCalculation(calculation);
helper.setSystemDefined(true);
helper.setExpression(variable.getExpression());
return helper;
}
private void setVariables(List variableList)
{
variables = new JRFillVariable[variableList.size()];
variables = (JRFillVariable[]) variableList.toArray(variables);
for (int i = 0; i < variables.length; i++)
{
variablesMap.put(variables[i].getName(), variables[i]);
}
}
private void setFields(JRDataset dataset, JRFillObjectFactory factory)
{
JRField[] jrFields = dataset.getFields();
if (jrFields != null && jrFields.length > 0)
{
fields = new JRFillField[jrFields.length];
fieldsMap = new HashMap();
for (int i = 0; i < fields.length; i++)
{
fields[i] = factory.getField(jrFields[i]);
fieldsMap.put(fields[i].getName(), fields[i]);
}
}
}
/**
* Creates the calculator
* @param jasperReport the report
* @throws JRException
*/
protected void createCalculator(JasperReport jasperReport) throws JRException
{
setCalculator(createCalculator(jasperReport, this));
}
protected void setCalculator(JRCalculator calculator)
{
this.calculator = calculator;
}
protected static JRCalculator createCalculator(JasperReport jasperReport, JRDataset dataset) throws JRException
{
JREvaluator evaluator = JRDefaultCompiler.getInstance().loadEvaluator(jasperReport, dataset);
return new JRCalculator(evaluator);
}
/**
* Initializes the calculator.
*
* @throws JRException
*/
protected void initCalculator() throws JRException
{
calculator.init(this);
}
/**
* Inherits properties from the report.
*/
protected void inheritFromMain()
{
if (resourceBundleBaseName == null && !isMain)
{
resourceBundleBaseName = filler.mainDataset.resourceBundleBaseName;
whenResourceMissingType = filler.mainDataset.whenResourceMissingType;
}
}
/**
* Creates and initializes the scriptlet.
*
* @return the scriptlet
* @throws JRException
*/
protected JRAbstractScriptlet initScriptlet() throws JRException
{
scriptlet = createScriptlet();
scriptlet.setData(parametersMap, fieldsMap, variablesMap, groups);
return scriptlet;
}
/**
* Creates the scriptlet.
*
* @return the scriptlet
* @throws JRException
*/
protected JRAbstractScriptlet createScriptlet() throws JRException
{
JRAbstractScriptlet tmpScriptlet = null;
if (scriptletClassName != null)
{
if (scriptletClass == null)
{
try
{
scriptletClass = JRClassLoader.loadClassForName(scriptletClassName);
}
catch (ClassNotFoundException e)
{
throw new JRException("Error loading scriptlet class : " + scriptletClassName, e);
}
}
try
{
tmpScriptlet = (JRAbstractScriptlet) scriptletClass.newInstance();
}
catch (Exception e)
{
throw new JRException("Error creating scriptlet class instance : " + scriptletClassName, e);
}
}
if (tmpScriptlet == null)
{
tmpScriptlet = new JRDefaultScriptlet();
}
return tmpScriptlet;
}
/**
* Initializes the element datasets.
*
* @param factory the fill object factory used by the filler
*/
protected void initElementDatasets(JRFillObjectFactory factory)
{
elementDatasets = factory.getElementDatasets(this);
}
/**
* Filters the element datasets, leaving only one.
* <p>
* This method is used when a dataset is instantiated by a chart or crosstab.
*
* @param elementDataset the element dataset that should remain
*/
protected void filterElementDatasets(JRFillElementDataset elementDataset)
{
origElementDatasets = elementDatasets;
elementDatasets = new JRFillElementDataset[]{elementDataset};
}
/**
* Restores the original element datasets.
* <p>
* This method should be called after {@link #filterElementDatasets(JRFillElementDataset) filterElementDatasets}.
*/
protected void restoreElementDatasets()
{
if (origElementDatasets != null)
{
elementDatasets = origElementDatasets;
origElementDatasets = null;
}
}
/**
* Loads the resource bundle corresponding to the resource bundle base name and locale.
*/
protected ResourceBundle loadResourceBundle()
{
ResourceBundle tmpResourceBundle = null;
if (resourceBundleBaseName != null)
{
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
if (classLoader != null)
{
try
{
tmpResourceBundle = ResourceBundle.getBundle(resourceBundleBaseName, locale, classLoader);
}
catch (MissingResourceException e)
{
// if (log.isWarnEnabled())
// log.warn("Failure using
// Thread.currentThread().getContextClassLoader() in
// JRClassLoader class. Using
// JRClassLoader.class.getClassLoader() instead.");
}
}
if (tmpResourceBundle == null)
{
classLoader = JRClassLoader.class.getClassLoader();
if (classLoader == null)
{
tmpResourceBundle = ResourceBundle.getBundle(resourceBundleBaseName, locale);
}
else
{
tmpResourceBundle = ResourceBundle.getBundle(resourceBundleBaseName, locale, classLoader);
}
}
}
return tmpResourceBundle;
}
/**
* Reads built-in parameter values from the value map.
*
* @param parameterValues the parameter values
* @throws JRException
*/
protected void setParameters(Map parameterValues) throws JRException
{
reportMaxCount = (Integer) parameterValues.get(JRParameter.REPORT_MAX_COUNT);
locale = (Locale) parameterValues.get(JRParameter.REPORT_LOCALE);
if (locale == null)
{
locale = Locale.getDefault();
}
if (locale == null)
{
parameterValues.remove(JRParameter.REPORT_LOCALE);//FIXME NOW why remove? check all
}
else
{
parameterValues.put(JRParameter.REPORT_LOCALE, locale);
}
setParameter(JRParameter.REPORT_LOCALE, locale);
resourceBundle = (ResourceBundle) parameterValues.get(JRParameter.REPORT_RESOURCE_BUNDLE);
if (resourceBundle == null)
{
resourceBundle = loadResourceBundle();
}
if (resourceBundle == null)
{
parameterValues.remove(JRParameter.REPORT_RESOURCE_BUNDLE);
}
else
{
parameterValues.put(JRParameter.REPORT_RESOURCE_BUNDLE, resourceBundle);
}
setParameter(JRParameter.REPORT_RESOURCE_BUNDLE, resourceBundle);
try
{
pageMinLine = (Integer)getParameterValue("PAGE_MIN_LINE");
}
catch (Exception e) {}
}
/**
* Sets the parameter values from the values map.
*
* @param parameterValues the values map
* @throws JRException
*/
protected void setParameterValues(Map parameterValues) throws JRException
{
if (parameters != null && parameters.length > 0)
{
for (int i = 0; i < parameters.length; i++)
{
if (parameterValues.containsKey(parameters[i].getName()))
{
setParameter(parameters[i], parameterValues.get(parameters[i].getName()));
}
else if (!parameters[i].isSystemDefined())
{
Object value = calculator.evaluate(parameters[i].getDefaultValueExpression(), JRExpression.EVALUATION_DEFAULT);
if (value != null)
{
parameterValues.put(parameters[i].getName(), value);
}
setParameter(parameters[i], value);
}
}
}
}
/**
* Creates the data source from a connection.
*
* @param parameterValues the parameterValues
* @param conn the connection
* @return the data source to be used
* @throws JRException
*/
protected JRDataSource createDataSource(Map parameterValues, Connection conn) throws JRException
{
if (conn == null)
{
conn = (Connection) parameterValues.get(JRParameter.REPORT_CONNECTION);
}
if (conn == null)
{
parameterValues.remove(JRParameter.REPORT_CONNECTION);
}
else
{
parameterValues.put(JRParameter.REPORT_CONNECTION, conn);
}
setParameter(JRParameter.REPORT_CONNECTION, conn);
if (conn == null)
{
if (log.isWarnEnabled())
log.warn("The supplied java.sql.Connection object is null.");
}
PreparedStatement pstmt = null;
try
{
JRDataSource ds = null;
pstmt = JRQueryExecuter.getStatement(query, parametersMap, parameterValues, conn);
if (pstmt != null)
{
if (reportMaxCount != null)
{
pstmt.setMaxRows(reportMaxCount.intValue());
}
dataSourceStatement = pstmt;
filler.fillContext.setRunningStatement(dataSourceStatement);
dataSourceResultSet = pstmt.executeQuery();
ds = new JRResultSetDataSource(dataSourceResultSet);
}
return ds;
}
catch (SQLException e)
{
throw new JRException("Error executing SQL statement for report : " + filler.name, e);
}
finally
{
filler.fillContext.clearRunningStatement();
}
}
/**
* Sets the data source to be used.
*
* @param parameterValues the parameter values
* @param ds the data source
* @throws JRException
*/
protected void setDatasource(Map parameterValues, JRDataSource ds) throws JRException
{
dataSource = ds;
if (dataSource == null)
{
dataSource = (JRDataSource) parameterValues.get(JRParameter.REPORT_DATA_SOURCE);
}
if (dataSource == null)
{
parameterValues.remove(JRParameter.REPORT_DATA_SOURCE);
}
else
{
parameterValues.put(JRParameter.REPORT_DATA_SOURCE, dataSource);
}
setParameter(JRParameter.REPORT_DATA_SOURCE, dataSource);
/* */
parameterValues.put(JRParameter.REPORT_SCRIPTLET, scriptlet);
setParameter(JRParameter.REPORT_SCRIPTLET, scriptlet);
/* */
parameterValues.put(JRParameter.REPORT_PARAMETERS_MAP, parameterValues);
setParameter(JRParameter.REPORT_PARAMETERS_MAP, parameterValues);
}
/**
* Closes the statement used to fire the query.
*/
protected void closeStatement()
{
if (dataSourceResultSet != null)
{
try
{
dataSourceResultSet.close();
}
catch (SQLException e)
{
log.error("Error while closing result set.", e);
}
finally
{
dataSourceResultSet = null;
}
}
if (dataSourceStatement != null)
{
try
{
dataSourceStatement.close();
}
catch (SQLException e)
{
log.error("Error while closing statement.", e);
}
finally
{
dataSourceStatement = null;
}
}
}
/**
* Starts the iteration on the data source.
*/
protected void start()
{
reportCount = 0;
vitalCount=0;
}
/**
* Moves to the next record in the data source.
*
* @return <code>true</code> if the data source was not exhausted
* @throws JRException
*/
protected boolean next() throws JRException
{
boolean hasNext = false;
if (dataSource != null)
{
if (vitalCount==0)
hasNext = (reportMaxCount == null || reportMaxCount.intValue() > reportCount) && dataSource.next();
if (hasNext)
{
reportCount++;
/* */
if (fields != null && fields.length > 0)
{
JRFillField field = null;
for (int i = 0; i < fields.length; i++)
{
field = fields[i];
field.setOldValue(field.getValue());
field.setValue(dataSource.getFieldValue(field));
}
}
/* */
if (variables != null && variables.length > 0)
{
JRFillVariable variable = null;
for (int i = 0; i < variables.length; i++)
{
variable = variables[i];
variable.setOldValue(variable.getValue());
}
}
}
else
{
log.error("reportCount:"+reportCount);
if (pageMinLine!=null && pageMinLine.intValue()>0)
{
if (vitalCount==0)
{
int modNum = reportCount%pageMinLine.intValue();
if (modNum!=0)
{
vitalCount=pageMinLine.intValue()-modNum;
}
else
vitalCount=-1;
}
else
{
vitalCount--;
}
if (vitalCount!=0)
{
if (fields != null && fields.length > 0)
{
JRFillField field = null;
for (int i = 0; i < fields.length; i++)
{
field = fields[i];
field.setOldValue(field.getValue());
field.setValue(null);
}
}
}
//
}
}
}
if (vitalCount>0)
{
log.error("---blank line--");
return true;
}
return hasNext;
}
/**
* Sets the value of a parameter.
*
* @param parameterName the parameter name
* @param value the value
* @throws JRException
*/
protected void setParameter(String parameterName, Object value) throws JRException
{
JRFillParameter parameter = (JRFillParameter) parametersMap.get(parameterName);
if (parameter != null)
{
setParameter(parameter, value);
}
}
/**
* Sets the value of the parameter.
*
* @param parameter the parameter
* @param value the value
* @throws JRException
*/
protected void setParameter(JRFillParameter parameter, Object value) throws JRException
{
if (value != null)
{
if (parameter.getValueClass().isInstance(value))
{
parameter.setValue(value);
}
else
{
throw new JRException(
"Incompatible "
+ value.getClass().getName()
+ " value assigned to parameter "
+ parameter.getName()
+ " in the " + getName() + " dataset."
);
}
}
else
{
parameter.setValue(value);
}
}
/**
* Returns the value of a variable.
*
* @param variableName the variable name
* @return the variable value
*/
public Object getVariableValue(String variableName)
{
JRFillVariable var = (JRFillVariable) variablesMap.get(variableName);
if (var == null)
{
throw new JRRuntimeException("No such variable " + variableName);
}
return var.getValue();
}
/**
* Returns the value of a parameter.
*
* @param parameterName the parameter name
* @return the parameter value
*/
public Object getParameterValue(String parameterName)
{
JRFillParameter param = (JRFillParameter) parametersMap.get(parameterName);
if (param == null)
{
throw new JRRuntimeException("No such parameter " + parameterName);
}
return param.getValue();
}
/**
* Returns the value of a field.
*
* @param fieldName the field name
* @return the field value
*/
public Object getFieldValue(String fieldName)
{
JRFillField var = (JRFillField) fieldsMap.get(fieldName);
if (var == null)
{
throw new JRRuntimeException("No such field " + fieldName);
}
return var.getValue();
}
/**
* Class used to hold expression calculation requirements.
*/
protected static class VariableCalculationReq
{
String variableName;
byte calculation;
VariableCalculationReq(String variableName, byte calculation)
{
this.variableName = variableName;
this.calculation = calculation;
}
public boolean equals(Object o)
{
if (o == null || !(o instanceof VariableCalculationReq))
{
return false;
}
VariableCalculationReq r = (VariableCalculationReq) o;
return variableName.equals(r.variableName) && calculation == r.calculation;
}
public int hashCode()
{
return 31 * calculation + variableName.hashCode();
}
}
/**
* Adds a variable calculation requirement.
*
* @param variableName the variable name
* @param calculation the required calculation
*/
protected void addVariableCalculationReq(String variableName, byte calculation)
{
if (variableCalculationReqs == null)
{
variableCalculationReqs = new HashSet();
}
variableCalculationReqs.add(new VariableCalculationReq(variableName, calculation));
}
/**
* Checks if there are variable calculation requirements and creates the required variables.
*
* @param factory the fill object factory
*/
protected void checkVariableCalculationReqs(JRFillObjectFactory factory)
{
if (variableCalculationReqs != null && !variableCalculationReqs.isEmpty())
{
List variableList = new ArrayList(variables.length * 2);
for (int i = 0; i < variables.length; i++)
{
JRFillVariable variable = variables[i];
checkVariableCalculationReq(variable, variableList, factory);
}
setVariables(variableList);
}
}
private void checkVariableCalculationReq(JRFillVariable variable, List variableList, JRFillObjectFactory factory)
{
if (hasVariableCalculationReq(variable, JRVariable.CALCULATION_AVERAGE) || hasVariableCalculationReq(variable, JRVariable.CALCULATION_VARIANCE))
{
if (variable.getHelperVariable(JRCalculable.HELPER_COUNT) == null)
{
JRVariable countVar = createHelperVariable(variable, "_COUNT", JRVariable.CALCULATION_COUNT);
JRFillVariable fillCountVar = factory.getVariable(countVar);
checkVariableCalculationReq(fillCountVar, variableList, factory);
variable.setHelperVariable(fillCountVar, JRCalculable.HELPER_COUNT);
}
if (variable.getHelperVariable(JRCalculable.HELPER_SUM) == null)
{
JRVariable sumVar = createHelperVariable(variable, "_SUM", JRVariable.CALCULATION_SUM);
JRFillVariable fillSumVar = factory.getVariable(sumVar);
checkVariableCalculationReq(fillSumVar, variableList, factory);
variable.setHelperVariable(fillSumVar, JRCalculable.HELPER_SUM);
}
}
if (hasVariableCalculationReq(variable, JRVariable.CALCULATION_STANDARD_DEVIATION))
{
if (variable.getHelperVariable(JRCalculable.HELPER_VARIANCE) == null)
{
JRVariable varianceVar = createHelperVariable(variable, "_VARIANCE", JRVariable.CALCULATION_VARIANCE);
JRFillVariable fillVarianceVar = factory.getVariable(varianceVar);
checkVariableCalculationReq(fillVarianceVar, variableList, factory);
variable.setHelperVariable(fillVarianceVar, JRCalculable.HELPER_VARIANCE);
}
}
variableList.add(variable);
}
private boolean hasVariableCalculationReq(JRVariable var, byte calculation)
{
return variableCalculationReqs.contains(new VariableCalculationReq(var.getName(), calculation));
}
public String getName()
{
return parent.getName();
}
public String getScriptletClass()
{
return parent.getScriptletClass();
}
public JRParameter[] getParameters()
{
return parameters;
}
public JRQuery getQuery()
{
return query;
}
public JRField[] getFields()
{
return fields;
}
public JRVariable[] getVariables()
{
return variables;
}
public JRGroup[] getGroups()
{
return groups;
}
public boolean isMainDataset()
{
return isMain;
}
public String getResourceBundle()
{
return resourceBundleBaseName;
}
public byte getWhenResourceMissingType()
{
return whenResourceMissingType;
}
public void setWhenResourceMissingType(byte whenResourceMissingType)
{
this.whenResourceMissingType = whenResourceMissingType;
}
}