/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.clerezza.rdf.core.sparql.query.impl;
import org.apache.clerezza.rdf.core.NonLiteral;
import org.apache.clerezza.rdf.core.Resource;
import org.apache.clerezza.rdf.core.UriRef;
import org.apache.clerezza.rdf.core.sparql.query.ResourceOrVariable;
import org.apache.clerezza.rdf.core.sparql.query.TriplePattern;
import org.apache.clerezza.rdf.core.sparql.query.UriRefOrVariable;
import org.apache.clerezza.rdf.core.sparql.query.Variable;
/**
*
* @author hasan
*/
public class SimpleTriplePattern implements TriplePattern {
private ResourceOrVariable subject;
private UriRefOrVariable predicate;
private ResourceOrVariable object;
public SimpleTriplePattern(ResourceOrVariable subject,
UriRefOrVariable predicate,
ResourceOrVariable object) {
if (subject == null) {
throw new IllegalArgumentException("Invalid subject: null");
}
if (predicate == null) {
throw new IllegalArgumentException("Invalid predicate: null");
}
if (object == null) {
throw new IllegalArgumentException("Invalid object: null");
}
this.subject = subject;
this.predicate = predicate;
this.object = object;
}
public SimpleTriplePattern(Variable subject, Variable predicate, Variable object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(NonLiteral subject, Variable predicate, Variable object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(Variable subject, UriRef predicate, Variable object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(NonLiteral subject, UriRef predicate, Variable object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(Variable subject, Variable predicate, Resource object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(NonLiteral subject, Variable predicate, Resource object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(Variable subject, UriRef predicate, Resource object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
public SimpleTriplePattern(NonLiteral subject, UriRef predicate, Resource object) {
this(new ResourceOrVariable(subject), new UriRefOrVariable(predicate),
new ResourceOrVariable(object));
}
@Override
public ResourceOrVariable getSubject() {
return subject;
}
@Override
public UriRefOrVariable getPredicate() {
return predicate;
}
@Override
public ResourceOrVariable getObject() {
return object;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (!(obj instanceof TriplePattern)) {
return false;
}
final TriplePattern other = (TriplePattern) obj;
if (!this.subject.equals(other.getSubject())) {
return false;
}
if (!this.predicate.equals(other.getPredicate())) {
return false;
}
if (!this.object.equals(other.getObject())) {
return false;
}
return true;
}
@Override
public int hashCode() {
return (subject.hashCode() >> 1) ^ subject.hashCode() ^ (subject.hashCode() << 1);
}
}