ParsedQuery.java
/*******************************************************************************
* Copyright (c) 2015 Eclipse RDF4J contributors, Aduna, and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*******************************************************************************/
package org.eclipse.rdf4j.query.parser;
import java.util.Objects;
import org.eclipse.rdf4j.query.Dataset;
import org.eclipse.rdf4j.query.algebra.TupleExpr;
/**
* Abstract super class of all query types that a query parser can generate.
*
* @author Arjohn Kampman
*/
public abstract class ParsedQuery extends ParsedOperation {
/*-----------*
* Variables *
*-----------*/
private TupleExpr tupleExpr;
/**
* The dataset that was specified in the operation, if any.
*/
private Dataset dataset;
/*--------------*
* Constructors *
*--------------*/
/**
* Creates a new query object. To complete this query, a tuple expression needs to be supplied to it using
* {@link #setTupleExpr(TupleExpr)}.
*/
protected ParsedQuery() {
super();
}
/**
* Creates a new query object. To complete this query, a tuple expression needs to be supplied to it using
* {@link #setTupleExpr(TupleExpr)}.
*/
protected ParsedQuery(String sourceString) {
super(sourceString);
}
/**
* Creates a new query object.
*
* @param tupleExpr The tuple expression underlying this query.
*/
protected ParsedQuery(String sourceString, TupleExpr tupleExpr) {
this(sourceString);
setTupleExpr(tupleExpr);
}
/**
* Creates a new query object.
*
* @param tupleExpr The tuple expression underlying this query.
*/
protected ParsedQuery(TupleExpr tupleExpr) {
this(null, tupleExpr);
}
/**
* Creates a new query object.
*
* @param tupleExpr The tuple expression underlying this query.
*/
protected ParsedQuery(TupleExpr tupleExpr, Dataset dataset) {
this(null, tupleExpr, dataset);
}
/**
* Creates a new query object.
*
* @param tupleExpr The tuple expression underlying this query.
*/
protected ParsedQuery(String sourceString, TupleExpr tupleExpr, Dataset dataset) {
this(sourceString, tupleExpr);
setDataset(dataset);
}
/*---------*
* Methods *
*---------*/
public Dataset getDataset() {
return dataset;
}
public void setDataset(Dataset dataset) {
this.dataset = dataset;
}
/**
* Gets the tuple expression underlying this operation.
*/
public void setTupleExpr(TupleExpr tupleExpr) {
assert tupleExpr != null : "tupleExpr must not be null";
this.tupleExpr = tupleExpr;
}
/**
* Gets the tuple expression underlying this operation.
*/
public TupleExpr getTupleExpr() {
return tupleExpr;
}
@Override
public String toString() {
if (getDataset() != null) {
return getDataset().toString() + getTupleExpr().toString();
} else {
return getTupleExpr().toString();
}
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ParsedQuery that = (ParsedQuery) o;
if (!tupleExpr.equals(that.tupleExpr)) {
return false;
}
return Objects.equals(dataset, that.dataset);
}
@Override
public int hashCode() {
int result = tupleExpr.hashCode();
result = 31 * result + (dataset != null ? dataset.hashCode() : 0);
return result;
}
}