/*
 * 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.expr.nodevalue;

//import java.math.BigDecimal;

import java.math.BigDecimal ;

import org.apache.jena.datatypes.xsd.XSDDatatype ;
import org.apache.jena.graph.Node ;
import org.apache.jena.graph.NodeFactory ;
import org.apache.jena.sparql.expr.NodeValue ;
import org.apache.jena.sparql.util.Utils ;


public class NodeValueDouble extends NodeValue
{
    double value = Double.NaN ;
    
    public NodeValueDouble(double d)         { super() ; value = d ; }
    public NodeValueDouble(double d, Node n) { super(n) ; value = d ; } 

    @Override
    public boolean isNumber() { return true ; }
    @Override
    public boolean isDouble() { return true ; }

    // Does not provide getFloat
    @Override
    public double getDouble()  { return value ; }

    @Override
    public BigDecimal getDecimal()  { return BigDecimal.valueOf(value) ; }

    @Override
    protected Node makeNode()
    { return NodeFactory.createLiteral(Utils.stringForm(value), XSDDatatype.XSDdouble) ; }
    
    @Override
    public String asString() { return toString() ; }
    
    @Override
    public String toString()
    { 
        // Preserve lexical form
        if ( getNode() != null ) return super.asString() ;
        return Utils.stringForm(value) ;
    }
    
    @Override
    public void visit(NodeValueVisitor visitor) { visitor.visit(this) ; }
}