Package org.pentaho.reporting.engine.classic.core.states

Class CascadingDataFactory

java.lang.Object

org.pentaho.reporting.engine.classic.core.AbstractDataFactory

org.pentaho.reporting.engine.classic.core.CompoundDataFactory

org.pentaho.reporting.engine.classic.core.states.CascadingDataFactory

All Implemented Interfaces:

Serializable, Cloneable, CompoundDataFactorySupport, DataFactory, DataFactoryDesignTimeSupport, DataFactoryMetaProvider

public class CascadingDataFactory
extends CompoundDataFactory

The cascading data factory is a collection of data-factories. Each of the child datafactories is queried in the order of their addition to the collection. This is like the CompoundDataFactory but without deriving the datafactories on addition and without forwarding the open and close calls.

Implementation note: This is a purely internal class. Any attempt to use this class as a general datafactory implementation will give you a lot of fun and happy exceptions. Just dont do it.

Author:

Thomas Morgner

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.pentaho.reporting.engine.classic.core.AbstractDataFactory

AbstractDataFactory.DataRowWrapper

Field Summary

Fields inherited from interface org.pentaho.reporting.engine.classic.core.DataFactory

QUERY_LIMIT, QUERY_SORT, QUERY_TIMEOUT

Fields inherited from interface org.pentaho.reporting.engine.classic.core.DataFactoryDesignTimeSupport

DESIGN_TIME

Constructor Summary

Constructors

Constructor	Description
CascadingDataFactory()

Method Summary

Modifier and Type	Method	Description
void	add(DataFactory factory)
void	close()	Closes the data factory and frees all resources held by this instance.
DataFactory	derive()	Returns a copy of the data factory that is not affected by its anchestor and holds no connection to the anchestor anymore.
protected TableModel	handleFallThrough(String query)

Methods inherited from class org.pentaho.reporting.engine.classic.core.CompoundDataFactory

add, addRaw, deriveEmpty, get, getDataFactoryForQuery, getDataFactoryForQuery, getQueryNames, getReference, indexOfByReference, initialize, isFreeFormQueryExecutable, isNormalized, isQueryExecutable, isStaticQueryExecutable, normalize, normalize, normalizeInternal, postProcess, queryData, queryDesignTimeStructure, queryDesignTimeStructureFreeForm, queryDesignTimeStructureStatic, queryFreeForm, queryStatic, remove, remove, set, size

Methods inherited from class org.pentaho.reporting.engine.classic.core.AbstractDataFactory

calculateQueryLimit, calculateQueryTimeOut, cancelRunningQuery, clone, getConfiguration, getContextKey, getDataFactoryContext, getDisplayConnectionName, getLocale, getMetaData, getQueryHash, getReferencedFields, getResourceBundleFactory, getResourceManager

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.pentaho.reporting.engine.classic.core.DataFactory

cancelRunningQuery, clone, getMetaData

Constructor Detail

CascadingDataFactory

public CascadingDataFactory()

Method Detail

add

public void add(DataFactory factory)

Overrides:

add in class CompoundDataFactory

handleFallThrough

protected TableModel handleFallThrough(String query)
                                throws ReportDataFactoryException

Overrides:

handleFallThrough in class CompoundDataFactory

Throws:

ReportDataFactoryException

derive

public DataFactory derive()

Returns a copy of the data factory that is not affected by its anchestor and holds no connection to the anchestor anymore. A data-factory will be derived at the beginning of the report processing.

Specified by:

derive in interface DataFactory

Overrides:

derive in class CompoundDataFactory

Returns:

a copy of the data factory.

close

public void close()

Closes the data factory and frees all resources held by this instance.

Specified by:

close in interface DataFactory

Overrides:

close in class CompoundDataFactory