Package net.sf.jasperreports.engine.query

Class JRHibernateQueryExecuter

java.lang.Object

net.sf.jasperreports.engine.query.JRAbstractQueryExecuter

net.sf.jasperreports.engine.query.JRHibernateQueryExecuter

All Implemented Interfaces:

JRQueryExecuter

public class JRHibernateQueryExecuter
extends JRAbstractQueryExecuter

HQL query executer that uses Hibernate 3.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Nested Class Summary

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

JRAbstractQueryExecuter.QueryParameter, JRAbstractQueryExecuter.QueryParameterEntry, JRAbstractQueryExecuter.QueryParameterVisitor, JRAbstractQueryExecuter.ValuedQueryParameter, JRAbstractQueryExecuter.VisitExceptionWrapper

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	CANONICAL_LANGUAGE
static java.lang.String	EXCEPTION_MESSAGE_KEY_UNKNOWN_QUERY_RUN_TYPE
static java.lang.String	EXCEPTION_MESSAGE_KEY_UNRESOLVED_TYPE_CONSTANT

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

clauseFunctions, dataset, EXCEPTION_MESSAGE_KEY_NUMERIC_TYPE_REQUIRED, EXCEPTION_MESSAGE_KEY_PARAMETER_NOT_FOUND, EXCEPTION_MESSAGE_KEY_QUERY_CLAUSE_CIRCULARLY_NESTED_PARAMETER, EXCEPTION_MESSAGE_KEY_QUERY_CLAUSE_ID_FIRST_TOKEN_MISSING, EXCEPTION_MESSAGE_KEY_QUERY_CLAUSE_NOT_FOUND, EXCEPTION_MESSAGE_KEY_UNSUPPORTED_PARAMETER_TYPE, GET_COLLECTED

Constructor Summary

Constructors

Constructor	Description
JRHibernateQueryExecuter(JasperReportsContext jasperReportsContext, JRDataset dataset, java.util.Map<java.lang.String,? extends JRValueParameter> parameters)

Method Summary

Modifier and Type	Method	Description
boolean	cancelQuery()	Cancels the query if it's currently running.
void	clearCache()
void	close()	Closes the scrollable result when scroll execution type is used.
void	closeScrollableResults()	Closes the scrollable results of the query.
JRDataSource	createDatasource()	Creates an instance of JRHibernateListDataSource, JRHibernateIterateDataSource or JRHibernateScrollDataSource, depending on the
protected void	createQuery(java.lang.String queryString)	Creates the Hibernate query object.
protected JRDataSource	createResultDatasource()	Creates a data source out of the query result.
protected java.lang.String	getCanonicalQueryLanguage()	Returns a canonical query language for this query executer implementation.
JRDataset	getDataset()	Returns the dataset for which the query executer has been created.
protected java.lang.String	getHqlParameterName(java.lang.String parameterName)
protected java.lang.String	getParameterReplacement(java.lang.String parameterName)	Returns the replacement text for a query parameter.
java.lang.String[]	getReturnAliases()	Returns the aliases of the HQL query.
org.hibernate.type.Type[]	getReturnTypes()	Returns the return types of the HQL query.
java.util.Iterator<?>	iterate()	Runs the query by calling org.hibernate.Query.iterate().
java.util.List<?>	list()	Runs the query by calling org.hibernate.Query.list().
java.util.List<?>	list(int firstIndex, int resultCount)	Returns a page of the query results by calling org.hibernate.Query.iterate().
org.hibernate.ScrollableResults	scroll()	Runs the query by calling org.hibernate.Query.scroll().
protected void	setParameter(JRValueParameter parameter)	Binds a parameter value to a query parameter.
protected void	setParameters()	Binds values for all the query parameters.
protected void	setQueryRunning(boolean queryRunning)

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

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

Methods inherited from class java.lang.Object

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

Field Detail

EXCEPTION_MESSAGE_KEY_UNKNOWN_QUERY_RUN_TYPE

public static final java.lang.String EXCEPTION_MESSAGE_KEY_UNKNOWN_QUERY_RUN_TYPE

See Also:

Constant Field Values

EXCEPTION_MESSAGE_KEY_UNRESOLVED_TYPE_CONSTANT

public static final java.lang.String EXCEPTION_MESSAGE_KEY_UNRESOLVED_TYPE_CONSTANT

See Also:

Constant Field Values

CANONICAL_LANGUAGE

public static final java.lang.String CANONICAL_LANGUAGE

See Also:

Constant Field Values

Constructor Detail

JRHibernateQueryExecuter

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

Method Detail

getCanonicalQueryLanguage

protected java.lang.String getCanonicalQueryLanguage()

Description copied from class: JRAbstractQueryExecuter

Returns a canonical query language for this query executer implementation.

The canonical language is used to retrieve extensions for the query executer.

The default implementation returns the runtime query language used in the dataset, but query executer implementations should override this method and return a fixed language.

Overrides:

getCanonicalQueryLanguage in class JRAbstractQueryExecuter

Returns:

a canonical query language

createDatasource

public JRDataSource createDatasource()
                              throws JRException

Creates an instance of JRHibernateListDataSource, JRHibernateIterateDataSource or JRHibernateScrollDataSource, depending on the

Returns:

a JRDataSource wrapping the query execution result.

Throws:

JRException

createResultDatasource

protected JRDataSource createResultDatasource()

Creates a data source out of the query result.

Returns:

the data source

createQuery

protected void createQuery(java.lang.String queryString)

Creates the Hibernate query object.

If the value of the PARAMETER_HIBERNATE_FILTER_COLLECTION is not null, then a filter query is created using the value of the parameter as the collection.

Parameters:

queryString - the query string

setParameters

protected void setParameters()

Binds values for all the query parameters.

setParameter

protected void setParameter(JRValueParameter parameter)

Binds a parameter value to a query parameter.

Parameters:

parameter - the report parameter

close

public void close()

Closes the scrollable result when scroll execution type is used.

closeScrollableResults

public void closeScrollableResults()

Closes the scrollable results of the query.

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

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

getHqlParameterName

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

getReturnTypes

public org.hibernate.type.Type[] getReturnTypes()

Returns the return types of the HQL query.

Returns:

the return types of the HQL query

getReturnAliases

public java.lang.String[] getReturnAliases()

Returns the aliases of the HQL query.

Returns:

the aliases of the HQL query

getDataset

public JRDataset getDataset()

Returns the dataset for which the query executer has been created.

Returns:

the dataset for which the query executer has been created

list

public java.util.List<?> list()

Runs the query by calling org.hibernate.Query.list().

All the result rows are returned.

Returns:

the result of the query as a list

setQueryRunning

protected void setQueryRunning(boolean queryRunning)

list

public java.util.List<?> list(int firstIndex,
                              int resultCount)

Returns a page of the query results by calling org.hibernate.Query.iterate().

Parameters:

firstIndex - the index of the first row to return

resultCount - the number of rows to return

Returns:

result row list

iterate

public java.util.Iterator<?> iterate()

Runs the query by calling org.hibernate.Query.iterate().

Returns:

query iterator

scroll

public org.hibernate.ScrollableResults scroll()

Runs the query by calling org.hibernate.Query.scroll().

Returns:

scrollable results of the query

clearCache

public void clearCache()