001/** 002 * Copyright (C) 2007 - 2016, Jens Lehmann 003 * 004 * This file is part of DL-Learner. 005 * 006 * DL-Learner is free software; you can redistribute it and/or modify 007 * it under the terms of the GNU General Public License as published by 008 * the Free Software Foundation; either version 3 of the License, or 009 * (at your option) any later version. 010 * 011 * DL-Learner is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 014 * GNU General Public License for more details. 015 * 016 * You should have received a copy of the GNU General Public License 017 * along with this program. If not, see <http://www.gnu.org/licenses/>. 018 */ 019package org.dllearner.algorithms.qtl.operations; 020 021import java.util.ArrayList; 022import java.util.List; 023 024import org.apache.jena.graph.Triple; 025import org.apache.jena.sparql.algebra.Op; 026import org.apache.jena.sparql.algebra.OpVisitorBase; 027import org.apache.jena.sparql.algebra.op.OpBGP; 028import org.apache.jena.sparql.algebra.op.OpFilter; 029import org.apache.jena.sparql.algebra.op.OpProject; 030 031public class FilterVisitor extends OpVisitorBase { 032 033 private List<Op> ops = new ArrayList<>(); 034 035 036 037 @Override 038 public void visit(OpProject opProject) { 039 opProject.getSubOp().visit(this) ; 040 } 041 042 @Override 043 public void visit(OpBGP opBGP) { 044 for (Triple t : opBGP.getPattern()){ 045 if(t.getObject().isURI()){ 046 System.out.println(t.getObject().toString()); 047 } 048 } 049 } 050 051 @Override 052 public void visit(OpFilter opFilter) { 053 // TODO Auto-generated method stub 054 super.visit(opFilter); 055 } 056 057}