org.apache.jena.query.text

Class DatasetGraphText

java.lang.Object

org.apache.jena.sparql.core.DatasetGraphWrapper

org.apache.jena.sparql.core.DatasetGraphMonitor

org.apache.jena.query.text.DatasetGraphText

All Implemented Interfaces:

org.apache.jena.atlas.lib.Closeable, org.apache.jena.atlas.lib.Sync, DatasetGraph, Transactional

public class DatasetGraphText
extends DatasetGraphMonitor
implements Transactional

Constructor Summary

Constructors

Constructor and Description
DatasetGraphText(DatasetGraph dsg, TextIndex index, TextDocProducer producer)
DatasetGraphText(DatasetGraph dsg, TextIndex index, TextDocProducer producer, boolean closeIndexOnClose)

Method Summary

Modifier and Type	Method and Description
void	abort() Rollback all changes, discarding any exceptions that occur.
void	begin(ReadWrite readWrite)
void	close()
void	commit() Perform a 2-phase commit by first calling prepareCommit() on the TextIndex followed by committing the Transaction object, and then calling commit() on the TextIndex().
void	end()
Graph	getDefaultGraph()
Graph	getGraph(Node graphNode)
TextIndex	getTextIndex()
boolean	isInTransaction()
Iterator<TextHit>	search(String queryString) Search the text index on the default text field
Iterator<TextHit>	search(String queryString, int limit) Search the text index on the default text field
Iterator<TextHit>	search(String queryString, Node predicate) Search the text index on the text field associated with the predicate
Iterator<TextHit>	search(String queryString, Node predicate, int limit) Search the text index on the text field associated with the predicate
boolean	supportsTransactionAbort() Declare whether abort() is supported.
boolean	supportsTransactions()

Methods inherited from class org.apache.jena.sparql.core.DatasetGraphMonitor

add, add, addGraph, delete, delete, deleteAny, getMonitor, monitored, removeGraph, sync

Methods inherited from class org.apache.jena.sparql.core.DatasetGraphWrapper

clear, contains, contains, containsGraph, find, find, find, findNG, getBase, getContext, getLock, getWrapped, isEmpty, listGraphNodes, setDefaultGraph, size, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DatasetGraphText

public DatasetGraphText(DatasetGraph dsg,
                        TextIndex index,
                        TextDocProducer producer)

DatasetGraphText

public DatasetGraphText(DatasetGraph dsg,
                        TextIndex index,
                        TextDocProducer producer,
                        boolean closeIndexOnClose)

Method Detail

getDefaultGraph

public Graph getDefaultGraph()

Specified by:

getDefaultGraph in interface DatasetGraph

Overrides:

getDefaultGraph in class DatasetGraphWrapper

getGraph

public Graph getGraph(Node graphNode)

Specified by:

getGraph in interface DatasetGraph

Overrides:

getGraph in class DatasetGraphWrapper

getTextIndex

public TextIndex getTextIndex()

search

public Iterator<TextHit> search(String queryString)

Search the text index on the default text field

search

public Iterator<TextHit> search(String queryString,
                                Node predicate)

Search the text index on the text field associated with the predicate

search

public Iterator<TextHit> search(String queryString,
                                int limit)

Search the text index on the default text field

search

public Iterator<TextHit> search(String queryString,
                                Node predicate,
                                int limit)

Search the text index on the text field associated with the predicate

begin

public void begin(ReadWrite readWrite)

Specified by:

begin in interface Transactional

Overrides:

begin in class DatasetGraphWrapper

abort

public void abort()

Rollback all changes, discarding any exceptions that occur.

Specified by:

abort in interface Transactional

Overrides:

abort in class DatasetGraphWrapper

commit

public void commit()

Perform a 2-phase commit by first calling prepareCommit() on the TextIndex followed by committing the Transaction object, and then calling commit() on the TextIndex().

If either of the objects fail on either the preparation or actual commit, it terminates and calls abort() on both of them.

NOTE: it may happen that the TextIndex fails to commit, after the Transactional has already successfully committed. A rollback instruction will still be issued, but depending on the implementation, it may not have any effect.

Specified by:

commit in interface Transactional

Overrides:

commit in class DatasetGraphWrapper

isInTransaction

public boolean isInTransaction()

Specified by:

isInTransaction in interface Transactional

Overrides:

isInTransaction in class DatasetGraphWrapper

end

public void end()

Specified by:

end in interface Transactional

Overrides:

end in class DatasetGraphWrapper

supportsTransactions

public boolean supportsTransactions()

Specified by:

supportsTransactions in interface DatasetGraph

Overrides:

supportsTransactions in class DatasetGraphWrapper

supportsTransactionAbort

public boolean supportsTransactionAbort()

Declare whether abort() is supported. This goes along with clearing up after exceptions inside application transaction code.

Specified by:

supportsTransactionAbort in interface DatasetGraph

Overrides:

supportsTransactionAbort in class DatasetGraphWrapper

close

public void close()

Specified by:

close in interface org.apache.jena.atlas.lib.Closeable

Specified by:

close in interface DatasetGraph

Overrides:

close in class DatasetGraphWrapper