net.sf.jasperreports.engine.query
Class XalanXPathQueryExecuter

java.lang.Object
  net.sf.jasperreports.engine.query.JRAbstractQueryExecuter
      net.sf.jasperreports.engine.query.XalanXPathQueryExecuter

All Implemented Interfaces:

JRQueryExecuter

public class XalanXPathQueryExecuter
extends JRAbstractQueryExecuter

Xalan XPath query executer implementation.

The XPath query of the report is executed against the document specified by the PARAMETER_XML_DATA_DOCUMENT parameter.

All the parameters in the XPath query are replaced by calling String.valueOf(Object) on the parameter value.

Version:

$Id: XalanXPathQueryExecuter.java 5180 2012-03-29 13:23:12Z teodord $

Author:

Narcis Marcu (narcism@users.sourceforge.net)

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.jasperreports.engine.query.JRAbstractQueryExecuter

JRAbstractQueryExecuter.QueryParameter

Field Summary

Fields inherited from class net.sf.jasperreports.engine.query.JRAbstractQueryExecuter

CLAUSE_POSITION_ID, clauseFunctions, dataset

Constructor Summary

XalanXPathQueryExecuter(JasperReportsContext jasperReportsContext, JRDataset dataset, java.util.Map<java.lang.String,? extends JRValueParameter> parametersMap)

XalanXPathQueryExecuter(JRDataset dataset, java.util.Map<java.lang.String,? extends JRValueParameter> parametersMap)
Deprecated. Replaced by XalanXPathQueryExecuter(JasperReportsContext, JRDataset, Map).

Method Summary

boolean	cancelQuery() Cancels the query if it's currently running.
void	close() Closes resources kept open during the data source iteration.
JRDataSource	createDatasource() Executes the query and creates a JRDataSource out of the result.
protected java.lang.String	getParameterReplacement(java.lang.String parameterName) Returns the replacement text for a query parameter.

Methods inherited from class net.sf.jasperreports.engine.query.JRAbstractQueryExecuter

addQueryMultiParameters, addQueryMultiParameters, addQueryParameter, appendClauseChunk, appendParameterChunk, appendParameterClauseChunk, appendQueryChunk, appendTextChunk, applyClause, checkParameter, getBooleanParameter, getBooleanParameterOrProperty, getCollectedParameterNames, getCollectedParameters, getJasperReportsContext, getParameter, getParameterValue, getParameterValue, getPropertiesUtil, getQueryString, getStringParameter, getStringParameterOrProperty, getValueParameter, getValueParameter, parameterHasValue, parseQuery, registerClauseFunction, resolveFunction, unregisterClauseFunction

Methods inherited from class java.lang.Object

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

Constructor Detail

XalanXPathQueryExecuter

public XalanXPathQueryExecuter(JasperReportsContext jasperReportsContext,
                               JRDataset dataset,
                               java.util.Map<java.lang.String,? extends JRValueParameter> parametersMap)

XalanXPathQueryExecuter

public XalanXPathQueryExecuter(JRDataset dataset,
                               java.util.Map<java.lang.String,? extends JRValueParameter> parametersMap)

Deprecated. Replaced by XalanXPathQueryExecuter(JasperReportsContext, JRDataset, Map).

Method Detail

getParameterReplacement

protected java.lang.String getParameterReplacement(java.lang.String parameterName)

Description copied from class: JRAbstractQueryExecuter

Returns the replacement text for a query parameter.

Specified by:

getParameterReplacement in class JRAbstractQueryExecuter

Parameters:

parameterName - the parameter name

Returns:

the replacement text

See Also:

JRQueryChunk.TYPE_PARAMETER

createDatasource

public JRDataSource createDatasource()
                              throws JRException

Description copied from interface: JRQueryExecuter

Executes the query and creates a JRDataSource out of the result.

Returns:

a JRDataSource wrapping the query execution result.

Throws:

JRException

close

public void close()

Description copied from interface: JRQueryExecuter

Closes resources kept open during the data source iteration.

This method is called after the report is filled or the dataset is iterated. If a resource is not needed after the data source has been created, it should be released at the end of createDatasource.

cancelQuery

public boolean cancelQuery()
                    throws JRException

Description copied from interface: JRQueryExecuter

Cancels the query if it's currently running.

This method will be called from a different thread if the client decides to cancel the filling process.

Returns:

true if and only if the query was running and it has been canceled

Throws:

JRException