| /* |
| * 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.jena.sparql.core; |
| |
| import java.util.ArrayList ; |
| import java.util.List ; |
| import java.util.ListIterator ; |
| |
| import org.apache.jena.atlas.io.IndentedLineBuffer ; |
| import org.apache.jena.sparql.serializer.SerializationContext ; |
| import org.apache.jena.sparql.sse.SSE ; |
| import org.apache.jena.sparql.sse.writers.WriterNode ; |
| import org.apache.jena.sparql.util.Iso ; |
| import org.apache.jena.sparql.util.NodeIsomorphismMap ; |
| |
| |
| /** A class whose purpose is to give a name to a collection of quads |
| */ |
| |
| public class QuadPattern implements Iterable<Quad> |
| { |
| private List<Quad> quads = new ArrayList<>() ; |
| |
| public QuadPattern() {} |
| public QuadPattern(QuadPattern other) {quads.addAll(other.quads) ; } |
| |
| public void add(Quad q) { quads.add(q) ; } |
| public void addAll(QuadPattern other) { quads.addAll(other.quads) ; } |
| public void add(int i, Quad q) { quads.add(i, q) ; } |
| |
| public Quad get(int i) { return quads.get(i) ; } |
| @Override |
| public ListIterator<Quad> iterator() { return quads.listIterator() ; } |
| public int size() { return quads.size() ; } |
| public boolean isEmpty() { return quads.isEmpty() ; } |
| |
| public List<Quad> getList() { return quads ; } |
| |
| @Override |
| public int hashCode() { return quads.hashCode() ; } |
| |
| @Override |
| public boolean equals(Object other) { |
| if ( this == other ) |
| return true ; |
| if ( !(other instanceof QuadPattern) ) |
| return false ; |
| QuadPattern bp = (QuadPattern)other ; |
| return quads.equals(bp.quads) ; |
| } |
| |
| public boolean equiv(QuadPattern other, NodeIsomorphismMap isoMap) { |
| if ( this.quads.size() != other.quads.size() ) |
| return false ; |
| |
| for (int i = 0; i < this.quads.size(); i++) { |
| Quad q1 = get(i) ; |
| Quad q2 = other.get(i) ; |
| |
| if ( !Iso.quadIso(q1, q2, isoMap) ) |
| return false ; |
| } |
| return true ; |
| } |
| |
| @Override |
| public String toString() { |
| IndentedLineBuffer out = new IndentedLineBuffer() ; |
| SerializationContext sCxt = SSE.sCxt((SSE.getPrefixMapWrite())) ; |
| |
| boolean first = true ; |
| for (Quad quad : quads) { |
| if ( !first ) |
| out.print(" ") ; |
| else |
| first = false ; |
| // Adds (quad ...) |
| // SSE.write(buff.getIndentedWriter(), t) ; |
| out.print("(") ; |
| WriterNode.outputPlain(out, quad, sCxt) ; |
| out.print(")") ; |
| } |
| out.flush() ; |
| return out.toString() ; |
| } |
| } |