com.hp.hpl.jena.sparql.engine
Class QueryExecutionBase

java.lang.Object
  com.hp.hpl.jena.sparql.engine.QueryExecutionBase

All Implemented Interfaces:

QueryExecution

public class QueryExecutionBase
extends Object
implements QueryExecution

All the SPARQL query result forms made from a graph-level execution object

Constructor Summary

QueryExecutionBase(Query query, Dataset dataset, Context context, QueryEngineFactory qeFactory)

Method Summary

void	abort() Stop in mid execution.
void	close() Close the query execution and stop query evaluation as soon as convenient.
boolean	execAsk() Execute an ASK query
com.hp.hpl.jena.rdf.model.Model	execConstruct() Execute a CONSTRUCT query
com.hp.hpl.jena.rdf.model.Model	execConstruct(com.hp.hpl.jena.rdf.model.Model model) Execute a CONSTRUCT query, putting the statements into 'model'.
com.hp.hpl.jena.rdf.model.Model	execDescribe() Execute a DESCRIBE query
com.hp.hpl.jena.rdf.model.Model	execDescribe(com.hp.hpl.jena.rdf.model.Model model) Execute a DESCRIBE query, putting the statements into 'model'.
ResultSet	execSelect() Execute a SELECT query
Context	getContext() The properties associated with a query execution - implementation specific parameters This includes Java objects (so it is not an RDF graph).
Dataset	getDataset() The dataset against which the query will execute.
Plan	getPlan()
void	setFileManager(com.hp.hpl.jena.util.FileManager fm) Set the FileManger that might be used to load files.
void	setInitialBinding(QuerySolution startSolution) Set the initial association of variables and values.
void	setInitialBindings(ResultSet table)

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryExecutionBase

public QueryExecutionBase(Query query,
                          Dataset dataset,
                          Context context,
                          QueryEngineFactory qeFactory)

Method Detail

abort

public void abort()

Description copied from interface: QueryExecution

Stop in mid execution. No guarantee that the concrete implementation actual will stop or that it will do so immediately. No operations on the query execution or any associated result set are permitted after this call.

Specified by:

abort in interface QueryExecution

close

public void close()

Description copied from interface: QueryExecution

Close the query execution and stop query evaluation as soon as convenient. It is important to close query execution objects in order to release resources such as working memory and to stop the query execution. Some storage subsystems require explicit ends of operations and this operation will cause those to be called where necessary. No operations on the query execution or any associated result set are permitted after this call.

Specified by:

close in interface QueryExecution

execSelect

public ResultSet execSelect()

Description copied from interface: QueryExecution

Execute a SELECT query

Specified by:

execSelect in interface QueryExecution

execConstruct

public com.hp.hpl.jena.rdf.model.Model execConstruct()

Description copied from interface: QueryExecution

Execute a CONSTRUCT query

Specified by:

execConstruct in interface QueryExecution

execConstruct

public com.hp.hpl.jena.rdf.model.Model execConstruct(com.hp.hpl.jena.rdf.model.Model model)

Description copied from interface: QueryExecution

Execute a CONSTRUCT query, putting the statements into 'model'.

Specified by:

execConstruct in interface QueryExecution

Returns:

Model The model argument for casaded code.

execDescribe

public com.hp.hpl.jena.rdf.model.Model execDescribe()

Description copied from interface: QueryExecution

Execute a DESCRIBE query

Specified by:

execDescribe in interface QueryExecution

execDescribe

public com.hp.hpl.jena.rdf.model.Model execDescribe(com.hp.hpl.jena.rdf.model.Model model)

Description copied from interface: QueryExecution

Execute a DESCRIBE query, putting the statements into 'model'.

Specified by:

execDescribe in interface QueryExecution

Returns:

Model The model argument for casaded code.

execAsk

public boolean execAsk()

Description copied from interface: QueryExecution

Execute an ASK query

Specified by:

execAsk in interface QueryExecution

getPlan

public Plan getPlan()

getContext

public Context getContext()

Description copied from interface: QueryExecution

The properties associated with a query execution - implementation specific parameters This includes Java objects (so it is not an RDF graph). Keys should be URIs as strings. May be null (this implementation does not provide any configuration).

Specified by:

getContext in interface QueryExecution

getDataset

public Dataset getDataset()

Description copied from interface: QueryExecution

The dataset against which the query will execute. May be null, implying it is expected that the query itself has a dataset description.

Specified by:

getDataset in interface QueryExecution

setFileManager

public void setFileManager(com.hp.hpl.jena.util.FileManager fm)

Description copied from interface: QueryExecution

Set the FileManger that might be used to load files. May not be supported by all QueryExecution implementations.

Specified by:

setFileManager in interface QueryExecution

setInitialBinding

public void setInitialBinding(QuerySolution startSolution)

Description copied from interface: QueryExecution

Set the initial association of variables and values. May not be supported by all QueryExecution implementations.

Specified by:

setInitialBinding in interface QueryExecution

setInitialBindings

public void setInitialBindings(ResultSet table)