org.pentaho.reporting.engine.classic.core

Class AbstractNamedDataFactory<T>

java.lang.Object

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

org.pentaho.reporting.engine.classic.core.AbstractNamedDataFactory<T>

All Implemented Interfaces:

Serializable, Cloneable, DataFactory, DataFactoryDesignTimeSupport, DataFactoryMetaProvider

public abstract class AbstractNamedDataFactory<T>
extends AbstractDataFactory

See Also:

Serialized Form

Field Summary

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

DESIGN_TIME

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

QUERY_LIMIT, QUERY_SORT, QUERY_TIMEOUT

Constructor Summary

Constructors

Constructor and Description
AbstractNamedDataFactory()

Method Summary

Modifier and Type	Method and Description
Object	getQueryHash(String query, DataRow dataRow)
String[]	getQueryNames() Returns all known query-names.
String[]	getReferencedFields(String query, DataRow dataRow)
boolean	isQueryExecutable(String query, DataRow parameters) Checks whether the query would be executable by this datafactory.
TableModel	queryData(String query, DataRow parameters) Queries a datasource.

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

cancelRunningQuery, clone, derive, getConfiguration, getContextKey, getDataFactoryContext, getDisplayConnectionName, getLocale, getMetaData, getResourceBundleFactory, getResourceManager, initialize, queryDesignTimeStructure

Methods inherited from class java.lang.Object

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

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

close

Constructor Detail

AbstractNamedDataFactory

public AbstractNamedDataFactory()

Method Detail

queryData

public final TableModel queryData(String query,
                                  DataRow parameters)
                           throws ReportDataFactoryException

Description copied from interface: DataFactory

Queries a datasource. The string 'query' defines the name of the query. The Parameterset given here may contain more data than actually needed for the query.

The parameter-dataset may change between two calls, do not assume anything, and do not hold references to the parameter-dataset or the position of the columns in the dataset.

Parameters:

query - the query string, never null.

parameters - the parameters for the query, never null.

Returns:

the result of the query as table model.

Throws:

ReportDataFactoryException - if an error occured while performing the query.

isQueryExecutable

public boolean isQueryExecutable(String query,
                                 DataRow parameters)

Description copied from interface: DataFactory

Checks whether the query would be executable by this datafactory. This performs a rough check, not a full query.

Parameters:

query - the query, never null.

parameters - the parameters, never null.

Returns:

true, if the query would be executable, false if the query is not recognized.

getQueryNames

public String[] getQueryNames()

Description copied from interface: DataFactory

Returns all known query-names. A data-factory may accept more than the query-names returned here.

Returns:

the known query names.

getReferencedFields

public final String[] getReferencedFields(String query,
                                          DataRow dataRow)
                                   throws ReportDataFactoryException

Specified by:

getReferencedFields in interface DataFactoryMetaProvider

Overrides:

getReferencedFields in class AbstractDataFactory

Throws:

ReportDataFactoryException

getQueryHash

public final Object getQueryHash(String query,
                                 DataRow dataRow)
                          throws ReportDataFactoryException

Specified by:

getQueryHash in interface DataFactoryMetaProvider

Overrides:

getQueryHash in class AbstractDataFactory

Throws:

ReportDataFactoryException