net.sf.jasperreports.engine.fill
Class JRFillDataset

java.lang.Object
  net.sf.jasperreports.engine.fill.JRFillDataset

All Implemented Interfaces:

java.lang.Cloneable, DatasetFillContext, JRCloneable, JRDataset, JRPropertiesHolder

public class JRFillDataset
extends java.lang.Object
implements JRDataset, DatasetFillContext

Version:

$Id: JRFillDataset.java 4770 2011-10-28 10:10:13Z lucianc $

Author:

Lucian Chirita ([email protected])

Nested Class Summary

protected static class

JRFillDataset.VariableCalculationReq Class used to hold expression calculation requirements.

Field Summary

protected JRCalculator	calculator The calculator used by the dataset.
protected JRDataSource	dataSource The data source.
protected JRAbstractScriptlet	delegateScriptlet
protected JRFillElementDataset[]	elementDatasets The element datasets.
protected JRFillField[]	fields The dataset fields.
protected java.util.Map<java.lang.String,JRFillField>	fieldsMap The dataset fields indexed by name.
protected DatasetFilter	filter
protected JRFillGroup[]	groups The dataset groups.
protected java.util.Locale	locale The Locale to be used by the dataset.
protected JRFillElementDataset[]	origElementDatasets Used to save the original element datasets when filterElementDatasets is called.
protected JRFillParameter[]	parameters The dataset parameters.
protected java.util.Map<java.lang.String,JRFillParameter>	parametersMap The dataset parameters indexed by name.
protected JRQuery	query The dataset query.
protected int	reportCount The cursor used when iterating the data source.
protected java.lang.Integer	reportMaxCount The value of the max count parameter.
protected java.util.ResourceBundle	resourceBundle The loaded resource bundle.
protected java.lang.String	resourceBundleBaseName The resource bundle base name.
protected java.lang.String	scriptletClassName The scriptlet class name.
protected java.util.List<JRAbstractScriptlet>	scriptlets The scriptlets used by the dataset.
protected java.util.TimeZone	timeZone The TimeZone to be used by the dataset.
protected java.util.Set<JRFillDataset.VariableCalculationReq>	variableCalculationReqs Set of VariableCalculationReq objects.
protected JRFillVariable[]	variables The dataset variables.
protected java.util.Map<java.lang.String,JRFillVariable>	variablesMap The dataset variables indexed by name.
protected WhenResourceMissingTypeEnum	whenResourceMissingType The resource missing handle type.

Constructor Summary

JRFillDataset(JRBaseFiller filler, JRDataset dataset, JRFillObjectFactory factory)
Creates a fill dataset object.

Method Summary

protected void	addVariableCalculationReq(java.lang.String variableName, CalculationEnum calculation) Adds a variable calculation requirement.
protected boolean	advanceDataSource(boolean limit)
protected void	checkVariableCalculationReqs(JRFillObjectFactory factory) Checks if there are variable calculation requirements and creates the required variables.
java.lang.Object	clone()
void	closeDatasource() Closes the data source used by this dataset if this data source was obtained via a query executer.
void	createCalculator(JasperReport jasperReport) Creates the calculator
protected static JRCalculator	createCalculator(JasperReport jasperReport, JRDataset dataset)
protected java.util.List<JRAbstractScriptlet>	createScriptlets(java.util.Map<java.lang.String,java.lang.Object> parameterValues) Creates the scriptlets.
java.lang.Object	evaluateExpression(JRExpression expression, byte evaluation) Evaluates an expression
protected boolean	evaluateFilter()
protected void	filterElementDatasets(JRFillElementDataset elementDataset) Filters the element datasets, leaving only one.
JRField[]	getFields() Returns the dataset's fields.
java.lang.Object	getFieldValue(java.lang.String fieldName) Returns the value of a field.
java.lang.Object	getFieldValue(java.lang.String fieldName, EvaluationType evaluation) Returns the value of a field.
JRFillField	getFillField(java.lang.String fieldName)
JRFillVariable	getFillVariable(java.lang.String variableName)
JRExpression	getFilterExpression() Returns the dataset filter expression.
JRGroup[]	getGroups() Returns the dataset's groups.
java.util.Locale	getLocale() Returns the locale used by the dataset.
java.lang.String	getName() Returns the dataset name.
JRParameter[]	getParameters() Returns the dataset's parameters.
java.util.Map<java.lang.String,JRFillParameter>	getParametersMap()
java.lang.Object	getParameterValue(java.lang.String parameterName) Returns the value of a parameter.
java.lang.Object	getParameterValue(java.lang.String parameterName, boolean ignoreMissing) Returns the value of a parameter.
protected java.util.Map<java.lang.String,java.lang.Object>	getParameterValuesMap() Returns the map of parameter values.
JRPropertiesHolder	getParentProperties() Returns the parent properties holder, whose properties are used as defaults for this object.
JRPropertiesMap	getPropertiesMap() Returns this object's properties map.
JRQuery	getQuery() Returns the query of the dataset.
java.lang.String	getResourceBundle() Returns the resource bundle base name.
java.lang.String	getScriptletClass() The name of the scriptlet class to be used when iterating this dataset.
JRScriptlet[]	getScriptlets() Returns the dataset's scriptlets.
JRSortField[]	getSortFields() Returns the dataset's sort fields.
JRVariable[]	getVariables() Returns the dataset's variables.
java.lang.Object	getVariableValue(java.lang.String variableName) Returns the value of a variable.
java.lang.Object	getVariableValue(java.lang.String variableName, EvaluationType evaluation) Returns the value of a variable.
WhenResourceMissingTypeEnum	getWhenResourceMissingTypeValue() Returns the resource missing handling type.
boolean	hasProperties() Checks whether the object has any properties.
protected void	inheritFromMain() Inherits properties from the report.
void	initCalculator() Initializes the calculator.
void	initDatasource() Initializes the data source which will be used by this dataset.
protected void	initElementDatasets(JRFillObjectFactory factory) Initializes the element datasets.
boolean	isMainDataset() Decides whether this dataset is the main report dataset or a sub dataset.
protected java.util.ResourceBundle	loadResourceBundle() Loads the resource bundle corresponding to the resource bundle base name and locale.
boolean	next() Moves to the next record in the data source.
protected boolean	next(boolean filter) Moves to the next record in the data source.
protected void	reset()
protected void	resetVariables()
protected void	restoreElementDatasets() Restores the original element datasets.
protected void	revertToOldValues()
protected void	setCalculator(JRCalculator calculator)
void	setConnectionParameterValue(java.util.Map<java.lang.String,java.lang.Object> parameterValues, java.sql.Connection conn) Sets the JDBC connection to be used.
void	setDatasourceParameterValue(java.util.Map<java.lang.String,java.lang.Object> parameterValues, JRDataSource ds) Sets the data source to be used.
protected void	setOldValues()
protected void	setParameter(JRFillParameter parameter, java.lang.Object value) Sets the value of the parameter.
protected void	setParameter(java.lang.String parameterName, java.lang.Object value) Sets the value of a parameter.
void	setParameterValues(java.util.Map<java.lang.String,java.lang.Object> parameterValues) Reads built-in parameter values from the value map.
void	setWhenResourceMissingType(WhenResourceMissingTypeEnum whenResourceMissingType) Sets the resource missing handling type.
void	start() Starts the iteration on the data source.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

query

protected JRQuery query

The dataset query.

parameters

protected JRFillParameter[] parameters

The dataset parameters.

parametersMap

protected java.util.Map<java.lang.String,JRFillParameter> parametersMap

The dataset parameters indexed by name.

fields

protected JRFillField[] fields

The dataset fields.

fieldsMap

protected java.util.Map<java.lang.String,JRFillField> fieldsMap

The dataset fields indexed by name.

variables

protected JRFillVariable[] variables

The dataset variables.

variablesMap

protected java.util.Map<java.lang.String,JRFillVariable> variablesMap

The dataset variables indexed by name.

variableCalculationReqs

protected java.util.Set<JRFillDataset.VariableCalculationReq> variableCalculationReqs

Set of VariableCalculationReq objects.

elementDatasets

protected JRFillElementDataset[] elementDatasets

The element datasets.

origElementDatasets

protected JRFillElementDataset[] origElementDatasets

Used to save the original element datasets when filterElementDatasets is called.

groups

protected JRFillGroup[] groups

The dataset groups.

resourceBundleBaseName

protected java.lang.String resourceBundleBaseName

The resource bundle base name.

whenResourceMissingType

protected WhenResourceMissingTypeEnum whenResourceMissingType

The resource missing handle type.

scriptletClassName

protected java.lang.String scriptletClassName

The scriptlet class name.

dataSource

protected JRDataSource dataSource

The data source.

locale

protected java.util.Locale locale

The Locale to be used by the dataset.

resourceBundle

protected java.util.ResourceBundle resourceBundle

The loaded resource bundle.

timeZone

protected java.util.TimeZone timeZone

The TimeZone to be used by the dataset.

reportCount

protected int reportCount

The cursor used when iterating the data source.

calculator

protected JRCalculator calculator

The calculator used by the dataset.

scriptlets

protected java.util.List<JRAbstractScriptlet> scriptlets

The scriptlets used by the dataset.

delegateScriptlet

protected JRAbstractScriptlet delegateScriptlet

reportMaxCount

protected java.lang.Integer reportMaxCount

The value of the max count parameter.

filter

protected DatasetFilter filter

Constructor Detail

JRFillDataset

public JRFillDataset(JRBaseFiller filler,
                     JRDataset dataset,
                     JRFillObjectFactory factory)

Creates a fill dataset object.

Parameters:

filler - the filler

dataset - the template dataset

factory - the fill object factory

Method Detail

createCalculator

public void createCalculator(JasperReport jasperReport)
                      throws JRException

Creates the calculator

Parameters:

jasperReport - the report

Throws:

JRException

setCalculator

protected void setCalculator(JRCalculator calculator)

createCalculator

protected static JRCalculator createCalculator(JasperReport jasperReport,
                                               JRDataset dataset)
                                        throws JRException

Throws:

JRException

initCalculator

public void initCalculator()
                    throws JRException

Initializes the calculator.

Throws:

JRException

inheritFromMain

protected void inheritFromMain()

Inherits properties from the report.

createScriptlets

protected java.util.List<JRAbstractScriptlet> createScriptlets(java.util.Map<java.lang.String,java.lang.Object> parameterValues)
                                                        throws JRException

Creates the scriptlets.

Returns:

the scriptlets list

Throws:

JRException

initElementDatasets

protected void initElementDatasets(JRFillObjectFactory factory)

Initializes the element datasets.

Parameters:

factory - the fill object factory used by the filler

filterElementDatasets

protected void filterElementDatasets(JRFillElementDataset elementDataset)

Filters the element datasets, leaving only one.

This method is used when a dataset is instantiated by a chart or crosstab.

Parameters:

elementDataset - the element dataset that should remain

restoreElementDatasets

protected void restoreElementDatasets()

Restores the original element datasets.

This method should be called after filterElementDatasets.

loadResourceBundle

protected java.util.ResourceBundle loadResourceBundle()

Loads the resource bundle corresponding to the resource bundle base name and locale.

setParameterValues

public void setParameterValues(java.util.Map<java.lang.String,java.lang.Object> parameterValues)
                        throws JRException

Reads built-in parameter values from the value map.

Parameters:

parameterValues - the parameter values

Throws:

JRException

initDatasource

public void initDatasource()
                    throws JRException

Initializes the data source which will be used by this dataset. If the dataset includes a query, this involves invoking the appropriate query executer to execute the query and create a data source from the results.

Throws:

JRException

getParameterValuesMap

protected java.util.Map<java.lang.String,java.lang.Object> getParameterValuesMap()

Returns the map of parameter values.

Returns:

the map of parameter values

reset

protected void reset()

setDatasourceParameterValue

public void setDatasourceParameterValue(java.util.Map<java.lang.String,java.lang.Object> parameterValues,
                                        JRDataSource ds)

Sets the data source to be used.

Parameters:

parameterValues - the parameter values

ds - the data source

setConnectionParameterValue

public void setConnectionParameterValue(java.util.Map<java.lang.String,java.lang.Object> parameterValues,
                                        java.sql.Connection conn)

Sets the JDBC connection to be used.

Parameters:

parameterValues - the parameter values

conn - the connection

closeDatasource

public void closeDatasource()

Closes the data source used by this dataset if this data source was obtained via a query executer.

See Also:

JRQueryExecuter.close()

start

public void start()

Starts the iteration on the data source.

resetVariables

protected void resetVariables()

next

public boolean next()
             throws JRException

Moves to the next record in the data source.

Returns:

true if the data source was not exhausted

Throws:

JRException

next

protected boolean next(boolean filter)
                throws JRException

Moves to the next record in the data source.

Parameters:

filter - whether to apply the dataset filter and max count

Returns:

true if the data source was not exhausted

Throws:

JRException

setOldValues

protected void setOldValues()
                     throws JRException

Throws:

JRException

revertToOldValues

protected void revertToOldValues()

advanceDataSource

protected boolean advanceDataSource(boolean limit)
                             throws JRException

Throws:

JRException

evaluateFilter

protected boolean evaluateFilter()
                          throws JRException

Throws:

JRException

setParameter

protected void setParameter(java.lang.String parameterName,
                            java.lang.Object value)
                     throws JRException

Sets the value of a parameter.

Parameters:

parameterName - the parameter name

value - the value

Throws:

JRException

setParameter

protected void setParameter(JRFillParameter parameter,
                            java.lang.Object value)
                     throws JRException

Sets the value of the parameter.

Parameters:

parameter - the parameter

value - the value

Throws:

JRException

getVariableValue

public java.lang.Object getVariableValue(java.lang.String variableName)

Returns the value of a variable.

Parameters:

variableName - the variable name

Returns:

the variable value

getVariableValue

public java.lang.Object getVariableValue(java.lang.String variableName,
                                         EvaluationType evaluation)

Description copied from interface: DatasetFillContext

Returns the value of a variable.

Specified by:

getVariableValue in interface DatasetFillContext

Parameters:

variableName - the variable name

evaluation - the evaluation type

Returns:

the variable value

getFillVariable

public JRFillVariable getFillVariable(java.lang.String variableName)

getParameterValue

public java.lang.Object getParameterValue(java.lang.String parameterName)

Returns the value of a parameter.

Specified by:

getParameterValue in interface DatasetFillContext

Parameters:

parameterName - the parameter name

Returns:

the parameter value

getParameterValue

public java.lang.Object getParameterValue(java.lang.String parameterName,
                                          boolean ignoreMissing)

Returns the value of a parameter.

Parameters:

parameterName - the parameter name

ignoreMissing - if set, null will be returned for inexisting parameters

Returns:

the parameter value

getFieldValue

public java.lang.Object getFieldValue(java.lang.String fieldName)

Returns the value of a field.

Parameters:

fieldName - the field name

Returns:

the field value

getFieldValue

public java.lang.Object getFieldValue(java.lang.String fieldName,
                                      EvaluationType evaluation)

Description copied from interface: DatasetFillContext

Returns the value of a field.

Specified by:

getFieldValue in interface DatasetFillContext

Parameters:

fieldName - the field name

evaluation - the evaluation type

Returns:

the field value

getFillField

public JRFillField getFillField(java.lang.String fieldName)

addVariableCalculationReq

protected void addVariableCalculationReq(java.lang.String variableName,
                                         CalculationEnum calculation)

Adds a variable calculation requirement.

Parameters:

variableName - the variable name

calculation - the required calculation

checkVariableCalculationReqs

protected void checkVariableCalculationReqs(JRFillObjectFactory factory)

Checks if there are variable calculation requirements and creates the required variables.

Parameters:

factory - the fill object factory

getName

public java.lang.String getName()

Description copied from interface: JRDataset

Returns the dataset name.

Specified by:

getName in interface JRDataset

Returns:

the name of the dataset

getScriptletClass

public java.lang.String getScriptletClass()

Description copied from interface: JRDataset

The name of the scriptlet class to be used when iterating this dataset.

Specified by:

getScriptletClass in interface JRDataset

Returns:

the scriplet class name

getScriptlets

public JRScriptlet[] getScriptlets()

Description copied from interface: JRDataset

Returns the dataset's scriptlets.

Specified by:

getScriptlets in interface JRDataset

Returns:

the dataset's scriptlets

getParameters

public JRParameter[] getParameters()

Description copied from interface: JRDataset

Returns the dataset's parameters.

Specified by:

getParameters in interface JRDataset

Returns:

the dataset's parameters

getParametersMap

public java.util.Map<java.lang.String,JRFillParameter> getParametersMap()

getQuery

public JRQuery getQuery()

Description copied from interface: JRDataset

Returns the query of the dataset.

The query is used by passing a connection is passed to the dataset when instantiating.

Specified by:

getQuery in interface JRDataset

Returns:

the query of the dataset

getFields

public JRField[] getFields()

Description copied from interface: JRDataset

Returns the dataset's fields.

Specified by:

getFields in interface JRDataset

Returns:

the dataset's fields

getSortFields

public JRSortField[] getSortFields()

Description copied from interface: JRDataset

Returns the dataset's sort fields.

Specified by:

getSortFields in interface JRDataset

Returns:

the dataset's sort fields

getVariables

public JRVariable[] getVariables()

Description copied from interface: JRDataset

Returns the dataset's variables.

Specified by:

getVariables in interface JRDataset

Returns:

the dataset's variables

getGroups

public JRGroup[] getGroups()

Description copied from interface: JRDataset

Returns the dataset's groups.

Specified by:

getGroups in interface JRDataset

Returns:

the dataset's groups

isMainDataset

public boolean isMainDataset()

Description copied from interface: JRDataset

Decides whether this dataset is the main report dataset or a sub dataset.

Specified by:

isMainDataset in interface JRDataset

Returns:

true if and only if this dataset is the main report dataset

getResourceBundle

public java.lang.String getResourceBundle()

Description copied from interface: JRDataset

Returns the resource bundle base name.

The resource bundle is used when evaluating expressions.

Specified by:

getResourceBundle in interface JRDataset

Returns:

the resource bundle base name

getWhenResourceMissingTypeValue

public WhenResourceMissingTypeEnum getWhenResourceMissingTypeValue()

Description copied from interface: JRDataset

Returns the resource missing handling type.

Specified by:

getWhenResourceMissingTypeValue in interface JRDataset

Returns:

the resource missing handling type

setWhenResourceMissingType

public void setWhenResourceMissingType(WhenResourceMissingTypeEnum whenResourceMissingType)

Description copied from interface: JRDataset

Sets the resource missing handling type.

Specified by:

setWhenResourceMissingType in interface JRDataset

Parameters:

whenResourceMissingType - the resource missing handling type

hasProperties

public boolean hasProperties()

Description copied from interface: JRPropertiesHolder

Checks whether the object has any properties.

Specified by:

hasProperties in interface JRPropertiesHolder

Returns:

whether the object has any properties

getPropertiesMap

public JRPropertiesMap getPropertiesMap()

Description copied from interface: JRPropertiesHolder

Returns this object's properties map.

Specified by:

getPropertiesMap in interface JRPropertiesHolder

Returns:

this object's properties map

getParentProperties

public JRPropertiesHolder getParentProperties()

Description copied from interface: JRPropertiesHolder

Returns the parent properties holder, whose properties are used as defaults for this object.

Specified by:

getParentProperties in interface JRPropertiesHolder

Returns:

the parent properties holder, or null if no parent

getFilterExpression

public JRExpression getFilterExpression()

Description copied from interface: JRDataset

Returns the dataset filter expression.

This expression is used to filter the rows of the data source that this dataset will iterate on.

This expression (if not null) is evaluated immediately after a new row is produced by the data source. The evaluation is performed using field and variable values corresponding to the new row. When the result of the evaluation is Boolean.TRUE the row gets processed by the report filling engine. When the result is null or Boolean.FALSE, the current row will be skipped and the datasource will be asked for the next row.

Specified by:

getFilterExpression in interface JRDataset

Returns:

the dataset filter expression

clone

public java.lang.Object clone()

Specified by:

clone in interface JRCloneable

Overrides:

clone in class java.lang.Object

evaluateExpression

public java.lang.Object evaluateExpression(JRExpression expression,
                                           byte evaluation)
                                    throws JRException

Evaluates an expression

Parameters:

expression - the expression

evaluation - the evaluation type

Returns:

the evaluation result

Throws:

JRException

getLocale

public java.util.Locale getLocale()

Description copied from interface: DatasetFillContext

Returns the locale used by the dataset.

Specified by:

getLocale in interface DatasetFillContext