/*
* 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.query.spatial;
import org.apache.jena.datatypes.RDFDatatype ;
import org.apache.jena.datatypes.xsd.XSDDatatype ;
import org.apache.jena.graph.Node ;
import org.apache.jena.graph.impl.LiteralLabel ;
import org.apache.jena.sparql.util.NodeUtils ;
public class SpatialValueUtil {
/** Does the LiteralLabel look like a decimal?
* (Maybe a string - if so, OK if it parses as a decimal)
*/
public static boolean isDecimal(Node n) {
if ( NodeUtils.isSimpleString(n) || NodeUtils.isLangString(n) ) {
try {
Double.parseDouble(n.getLiteralLexicalForm()) ;
return true;
} catch (NumberFormatException e) {
return false;
}
}
RDFDatatype dtype = n.getLiteralDatatype();
if ((dtype.equals(XSDDatatype.XSDfloat))
|| (dtype.equals(XSDDatatype.XSDdecimal))
|| (dtype.equals(XSDDatatype.XSDdouble) || (dtype
.equals(XSDDatatype.XSDinteger))))
return true;
return false;
}
public static boolean isWKTLiteral(LiteralLabel literal) {
RDFDatatype dtype = literal.getDatatype();
if (dtype == null)
return false;
if (dtype.getURI().equals(
EntityDefinition.geosparql_wktLiteral.getURI()))
return true;
return false;
}
}