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/*
* $Id$
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2018 OpenLink Software
*
* This project is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; only version 2 of the License, dated June 1991.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
package virtuoso.rdf4j.driver;
import org.eclipse.rdf4j.model.Value;
import org.eclipse.rdf4j.query.BindingSet;
import org.eclipse.rdf4j.query.Dataset;
import org.eclipse.rdf4j.query.Operation;
import org.eclipse.rdf4j.query.QueryInterruptedException;
import org.eclipse.rdf4j.query.impl.MapBindingSet;
public class VirtuosoOperation implements Operation {
MapBindingSet bindingSet = new MapBindingSet();
boolean includeInferred = false;
Dataset dataset = null;
int maxExecutionTime = 0;
/**
* Binds the specified variable to the supplied value. Any value that was
* previously bound to the specified value will be overwritten.
*
* @param name
* The name of the variable that should be bound.
* @param value
* The (new) value for the specified variable.
*/
public void setBinding(String name, Value value) {
bindingSet.addBinding(name, value);
}
/**
* Removes a previously set binding on the supplied variable. Calling this
* method with an unbound variable name has no effect.
*
* @param name
* The name of the variable from which the binding is to be removed.
*/
public void removeBinding(String name) {
bindingSet.removeBinding(name);
}
/**
* Removes all previously set bindings.
*/
public void clearBindings() {
bindingSet.clear();
}
/**
* Retrieves the bindings that have been set on this query.
*
* @return A (possibly empty) set of query variable bindings.
* @see #setBinding(String, Value)
*/
public BindingSet getBindings() {
return bindingSet;
}
/**
* Specifies the dataset against which to evaluate a query, overriding any
* dataset that is specified in the query itself.
*/
public void setDataset(Dataset dataset) {
this.dataset = dataset;
}
/**
* Gets the dataset that has been set using {@link #setDataset(Dataset)}, if
* any.
*/
public Dataset getDataset() {
return dataset;
}
/**
* 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'.
*
* @param includeInferred
* indicates whether inferred statements should included in the
* result.
*/
public void setIncludeInferred(boolean includeInferred) {
this.includeInferred = includeInferred;
}
/**
* Returns whether or not this query will return inferred statements (if any
* are present in the repository).
*
* @return <tt>true</tt> if inferred statements will be returned,
* <tt>false</tt> otherwise.
*/
public boolean getIncludeInferred() {
return this.includeInferred;
}
/**
* 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
* {@link QueryInterruptedException}s
* (depending on whether the operation is a query or an update).
*
* @param 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
*/
public void setMaxExecutionTime(int maxExecTime)
{
this.maxExecutionTime = maxExecTime;
}
/**
* Returns the maximum operation execution time.
*
* @return The maximum operation execution time, measured in seconds.
* @see #setMaxExecutionTime(int)
* @since 2.8.0
*/
public int getMaxExecutionTime()
{
return maxExecutionTime;
}
}
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