/*
* 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.stanbol.rules.adapters.sparql.atoms;
import org.apache.stanbol.rules.adapters.AbstractAdaptableAtom;
import org.apache.stanbol.rules.adapters.sparql.SPARQLFunction;
import org.apache.stanbol.rules.base.api.RuleAtom;
import org.apache.stanbol.rules.base.api.RuleAtomCallExeption;
import org.apache.stanbol.rules.base.api.SPARQLObject;
import org.apache.stanbol.rules.base.api.URIResource;
import org.apache.stanbol.rules.base.api.UnavailableRuleObjectException;
import org.apache.stanbol.rules.base.api.UnsupportedTypeForExportException;
import org.apache.stanbol.rules.manager.atoms.ExpressionAtom;
/**
* It adapts any TypedLiteralAtom to a typed literal in SPARQL.
*
* @author anuzzolese
*
*/
public class TypedLiteralAtom extends AbstractAdaptableAtom {
@SuppressWarnings("unchecked")
@Override
public <T> T adapt(RuleAtom ruleAtom) throws RuleAtomCallExeption,
UnavailableRuleObjectException,
UnsupportedTypeForExportException {
org.apache.stanbol.rules.manager.atoms.TypedLiteralAtom tmp = (org.apache.stanbol.rules.manager.atoms.TypedLiteralAtom) ruleAtom;
ExpressionAtom valueExpression = tmp.getValue();
URIResource xsdTypeResource = tmp.getXsdType();
SPARQLObject sparqlObject = null;
sparqlObject = adapter.adaptTo(valueExpression, SPARQLObject.class);
String value = sparqlObject.getObject();
if (!value.startsWith("\"")) {
value = "\"" + value;
}
if (!value.endsWith("\"")) {
value += "\"";
}
String xsdType = "<" + xsdTypeResource.getURI().toString() + ">";
return (T) new SPARQLFunction(value + "^^" + xsdType);
}
}