virtuoso.sesame4.driver

Class VirtuosoOperation

java.lang.Object

virtuoso.sesame4.driver.VirtuosoOperation

All Implemented Interfaces:

org.openrdf.query.Operation

Direct Known Subclasses:

VirtuosoQuery, VirtuosoUpdate

public class VirtuosoOperation
extends java.lang.Object
implements org.openrdf.query.Operation

Constructor Summary

Constructors

Constructor and Description
VirtuosoOperation()

Method Summary

Modifier and Type	Method and Description
void	clearBindings() Removes all previously set bindings.
org.openrdf.query.BindingSet	getBindings() Retrieves the bindings that have been set on this query.
org.openrdf.query.Dataset	getDataset() Gets the dataset that has been set using setDataset(Dataset), if any.
boolean	getIncludeInferred() Returns whether or not this query will return inferred statements (if any are present in the repository).
int	getMaxExecutionTime() Returns the maximum operation execution time.
void	removeBinding(java.lang.String name) Removes a previously set binding on the supplied variable.
void	setBinding(java.lang.String name, org.openrdf.model.Value value) Binds the specified variable to the supplied value.
void	setDataset(org.openrdf.query.Dataset dataset) Specifies the dataset against which to evaluate a query, overriding any dataset that is specified in the query itself.
void	setIncludeInferred(boolean includeInferred) Determine whether evaluation results of this query should include inferred statements (if any inferred statements are present in the repository).
void	setMaxExecutionTime(int maxExecTime) Specifies the maximum time that an operation is allowed to run.

Methods inherited from class java.lang.Object

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

Constructor Detail

VirtuosoOperation

public VirtuosoOperation()

Method Detail

setBinding

public void setBinding(java.lang.String name,
                       org.openrdf.model.Value value)

Binds the specified variable to the supplied value. Any value that was previously bound to the specified value will be overwritten.

Specified by:

setBinding in interface org.openrdf.query.Operation

Parameters:

name - The name of the variable that should be bound.

value - The (new) value for the specified variable.

removeBinding

public void removeBinding(java.lang.String name)

Removes a previously set binding on the supplied variable. Calling this method with an unbound variable name has no effect.

Specified by:

removeBinding in interface org.openrdf.query.Operation

Parameters:

name - The name of the variable from which the binding is to be removed.

clearBindings

public void clearBindings()

Removes all previously set bindings.

Specified by:

clearBindings in interface org.openrdf.query.Operation

getBindings

public org.openrdf.query.BindingSet getBindings()

Retrieves the bindings that have been set on this query.

Specified by:

getBindings in interface org.openrdf.query.Operation

Returns:

A (possibly empty) set of query variable bindings.

See Also:

setBinding(String, Value)

setDataset

public void setDataset(org.openrdf.query.Dataset dataset)

Specifies the dataset against which to evaluate a query, overriding any dataset that is specified in the query itself.

Specified by:

setDataset in interface org.openrdf.query.Operation

getDataset

public org.openrdf.query.Dataset getDataset()

Gets the dataset that has been set using setDataset(Dataset), if any.

Specified by:

getDataset in interface org.openrdf.query.Operation

setIncludeInferred

public void setIncludeInferred(boolean includeInferred)

Determine whether evaluation results of this query should include inferred statements (if any inferred statements are present in the repository). The default setting is 'true'.

Specified by:

setIncludeInferred in interface org.openrdf.query.Operation

Parameters:

includeInferred - indicates whether inferred statements should included in the result.

getIncludeInferred

public boolean getIncludeInferred()

Returns whether or not this query will return inferred statements (if any are present in the repository).

Specified by:

getIncludeInferred in interface org.openrdf.query.Operation

Returns:

true if inferred statements will be returned, false otherwise.

setMaxExecutionTime

public void setMaxExecutionTime(int maxExecTime)

Specifies the maximum time that an operation is allowed to run. The operation will be interrupted when it exceeds the time limit. Any consecutive requests to fetch query results will result in QueryInterruptedExceptions or UpdateInterruptedExceptions (depending on whether the operation is a query or an update).

Specified by:

setMaxExecutionTime in interface org.openrdf.query.Operation

Parameters:

maxExecTime - The maximum query time, measured in seconds. A negative or zero value indicates an unlimited execution time (which is the default).

Since:

2.8.0

getMaxExecutionTime

public int getMaxExecutionTime()

Returns the maximum operation execution time.

Specified by:

getMaxExecutionTime in interface org.openrdf.query.Operation

Returns:

The maximum operation execution time, measured in seconds.

Since:

2.8.0

See Also:

setMaxExecutionTime(int)