| /* |
| * 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.Iterator ; |
| import java.util.List ; |
| |
| import org.apache.jena.atlas.io.IndentedLineBuffer ; |
| import org.apache.jena.graph.Triple ; |
| 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 triples. Reduces the use of |
| * bland "List" in APIs (Java 1.4) |
| */ |
| |
| public class BasicPattern implements Iterable<Triple> { |
| private List<Triple> triples ; |
| |
| public BasicPattern() { |
| this(new ArrayList<Triple>()) ; |
| } |
| |
| public BasicPattern(BasicPattern other) { |
| this() ; |
| // Copy. |
| triples.addAll(other.triples) ; |
| } |
| |
| private BasicPattern(List<Triple> triples) { |
| this.triples = triples ; |
| } |
| |
| /** |
| * Wrap a list of triples up as a BasicPattern. Changing the list, changes the |
| * BasicPattern |
| */ |
| public static BasicPattern wrap(List<Triple> triples) { |
| return new BasicPattern(triples) ; |
| } |
| |
| public void add(Triple t) { |
| triples.add(t) ; |
| } |
| |
| public void addAll(BasicPattern other) { |
| triples.addAll(other.triples) ; |
| } |
| |
| public void add(int i, Triple t) { |
| triples.add(i, t) ; |
| } |
| |
| public Triple get(int i) { |
| return triples.get(i) ; |
| } |
| |
| @Override |
| public Iterator<Triple> iterator() { |
| return triples.listIterator() ; |
| } |
| |
| public int size() { |
| return triples.size() ; |
| } |
| |
| public boolean isEmpty() { |
| return triples.isEmpty() ; |
| } |
| |
| public List<Triple> getList() { |
| return triples ; |
| } |
| |
| @Override |
| public int hashCode() { |
| return triples.hashCode() ; |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if ( this == other ) |
| return true ; |
| if ( !(other instanceof BasicPattern) ) |
| return false ; |
| BasicPattern bp = (BasicPattern)other ; |
| return triples.equals(bp.triples) ; |
| } |
| |
| public boolean equiv(BasicPattern other, NodeIsomorphismMap isoMap) { |
| if ( this.triples.size() != other.triples.size() ) |
| return false ; |
| |
| for ( int i = 0 ; i < this.triples.size() ; i++ ) { |
| Triple t1 = get(i) ; |
| Triple t2 = other.get(i) ; |
| |
| if ( !Iso.tripleIso(t1, t2, isoMap) ) |
| return false ; |
| } |
| return true ; |
| } |
| |
| @Override |
| public String toString() { |
| IndentedLineBuffer out = new IndentedLineBuffer() ; |
| SerializationContext sCxt = SSE.sCxt(SSE.getPrefixMapString()) ; |
| |
| boolean first = true ; |
| for ( Triple t : triples ) { |
| if ( !first ) |
| out.print("\n") ; |
| else |
| first = false ; |
| // Adds (triple ...) |
| // SSE.write(buff.getIndentedWriter(), t) ; |
| out.print("(") ; |
| WriterNode.outputPlain(out, t, sCxt) ; |
| out.print(")") ; |
| } |
| out.flush() ; |
| return out.toString() ; |
| } |
| } |