Class SequenceDataFactory
- java.lang.Object
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- org.pentaho.reporting.engine.classic.core.AbstractDataFactory
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- org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sequence.SequenceDataFactory
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- All Implemented Interfaces:
Serializable
,Cloneable
,DataFactory
,DataFactoryDesignTimeSupport
,DataFactoryMetaProvider
public class SequenceDataFactory extends AbstractDataFactory
- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class org.pentaho.reporting.engine.classic.core.AbstractDataFactory
AbstractDataFactory.DataRowWrapper
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Field Summary
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Fields inherited from interface org.pentaho.reporting.engine.classic.core.DataFactory
QUERY_LIMIT, QUERY_SORT, QUERY_TIMEOUT
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Fields inherited from interface org.pentaho.reporting.engine.classic.core.DataFactoryDesignTimeSupport
DESIGN_TIME
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Constructor Summary
Constructors Constructor Description SequenceDataFactory()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addSequence(String query, Sequence sequence)
SequenceDataFactory
clone()
void
close()
Closes the data factory and frees all resources held by this instance.String[]
getQueryNames()
Returns all known query-names.Sequence
getSequence(String name)
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
calculateQueryLimit, calculateQueryTimeOut, cancelRunningQuery, derive, getConfiguration, getContextKey, getDataFactoryContext, getDisplayConnectionName, getLocale, getMetaData, getQueryHash, getReferencedFields, getResourceBundleFactory, getResourceManager, initialize, queryDesignTimeStructure
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Method Detail
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queryData
public 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.
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close
public void close()
Description copied from interface:DataFactory
Closes the data factory and frees all resources held by this instance.
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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.
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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.
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clone
public SequenceDataFactory clone()
- Specified by:
clone
in interfaceDataFactory
- Overrides:
clone
in classAbstractDataFactory
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