package org.apache.rya.indexing;

/*
 * 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.
 */


import java.util.Set;

import org.openrdf.model.Resource;
import org.openrdf.model.URI;

public class StatementConstraints {
	private Resource context = null;
	private Resource subject = null;
	private Set<URI> predicates = null;

	public StatementConstraints setContext(Resource context) {
		this.context = context;
		return this;
	}

	public StatementConstraints setPredicates(Set<URI> predicates) {
		this.predicates = predicates;
		return this;
	}

	public StatementConstraints setSubject(Resource subject) {
		this.subject = subject;
		return this;
	}

	public Resource getContext() {
		return context;
	}

	public Set<URI> getPredicates() {
		return predicates;
	}

	public Resource getSubject() {
		return subject;
	}

	public boolean hasSubject() {
		return subject != null;
	}

	public boolean hasPredicates() {
		return predicates != null && !predicates.isEmpty();
	}

	public boolean hasContext() {
		return context != null;
	}

}