/* Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved. Contact: SYSTAP, LLC DBA Blazegraph 2501 Calvert ST NW #106 Washington, DC 20008 licenses@blazegraph.com This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * Created on November 30, 2015 */ package com.bigdata.rdf.internal.constraints; import java.util.Map; import org.apache.log4j.Logger; import org.openrdf.model.Literal; import org.openrdf.model.Value; import com.bigdata.bop.BOp; import com.bigdata.bop.IBindingSet; import com.bigdata.bop.IValueExpression; import com.bigdata.rdf.error.SparqlTypeErrorException; import com.bigdata.rdf.internal.IV; import com.bigdata.rdf.internal.XSD; import com.bigdata.rdf.model.BigdataLiteral; import com.bigdata.rdf.model.BigdataValueFactory; import com.bigdata.rdf.sparql.ast.FilterNode; import com.bigdata.rdf.sparql.ast.GlobalAnnotations; /** * Convert the {@link IV} to a <code>xsd:long</code>. * Note that this is a non-standard extension. * * @author <a href="mailto:ms@metaphacts.com">Michael Schmidt</a> */ public class XsdLongBOp extends IVValueExpression<IV> implements INeedsMaterialization { private static final long serialVersionUID = -8564789336767221003L; private static final transient Logger log = Logger.getLogger(XsdLongBOp.class); public XsdLongBOp(final IValueExpression<? extends IV> x, final GlobalAnnotations globals) { this(new BOp[] { x }, anns(globals)); } /** * Required shallow copy constructor. */ public XsdLongBOp(final BOp[] args, final Map<String, Object> anns) { super(args, anns); if (args.length != 1 || args[0] == null) throw new IllegalArgumentException(); if (getProperty(Annotations.NAMESPACE) == null) throw new IllegalArgumentException(); } /** * Constructor required for {@link com.bigdata.bop.BOpUtility#deepCopy(FilterNode)}. */ public XsdLongBOp(final XsdLongBOp op) { super(op); } public IV get(final IBindingSet bs) { final IV iv = getAndCheckBound(0, bs); if (log.isDebugEnabled()) { log.debug(iv); } final Value val = asValue(iv); if (log.isDebugEnabled()) { log.debug(val); } // use to create my simple literals final BigdataValueFactory vf = getValueFactory(); try { if (val instanceof Literal) { final Literal lit = (Literal) val; if (lit.getDatatype() != null && lit.getDatatype().equals(XSD.LONG)) { // if xsd:unsignedLong literal return it return iv; } else { final BigdataLiteral str = vf.createLiteral(Long.valueOf(lit.getLabel())); return super.asIV(str, bs); } } } catch (Exception e) { // exception handling following } throw new SparqlTypeErrorException(); // fallback } /** * This bop can only work with materialized terms. */ public Requirement getRequirement() { return INeedsMaterialization.Requirement.SOMETIMES; } }