/*

 * 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.

 */

/*

 * $Id: XMLNumber.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#ifndef XMLNUMBER_HPP

#define XMLNUMBER_HPP

#include <xercesc/internal/XSerializable.hpp>

#include <xercesc/util/XMemory.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class XMLUTIL_EXPORT XMLNumber : public XSerializable, public XMemory

{

public:

    enum

    {

        LESS_THAN     = -1,

        EQUAL         = 0,

        GREATER_THAN  = 1,

        INDETERMINATE = 2

    };

    enum NumberType {

        Float,

        Double,

        BigDecimal,

        DateTime,

        UnKnown

    };

    virtual ~XMLNumber();

    /**

     *  Deprecated: please use getRawData

     *

     *  Return string representation of the decimal value.

     *  A decimal point will be included as necessary,

     *  the caller of this method is responsible for the

     *  de-allocation of the memory.

     */

    virtual XMLCh*     toString() const = 0;

	/**

	 *  Return string representation of the decimal value.

     *  A decimal point will be included as necessary.

     *  Similar to toString above, but the internal buffer is

     *  returned directly, user is not required to delete

     *  the returned buffer

	 */

    virtual XMLCh*     getRawData() const = 0;    

    /**

     *  Return the original and converted value of the original data.

     *  (applicable to double/float)

     *

     *  The internal buffer is returned directly, user is not required 

     *  to delete the returned buffer

     */

    virtual const XMLCh*     getFormattedString() const = 0;    

	/**

	 * Returns the sign of this number

     *

     * -1   negative

     *  0   zero

     *  1   positive

	 *

	 */

    virtual int        getSign() const = 0;

    /***

     * Support for Serialization/De-serialization

     ***/

    DECL_XSERIALIZABLE(XMLNumber)

    static XMLNumber*          loadNumber(XMLNumber::NumberType   numType

                                        , XSerializeEngine&       serEng);

protected:

    XMLNumber();

    XMLNumber(const XMLNumber&);

private:

    // -----------------------------------------------------------------------

    //  Unimplemented operators

    // -----------------------------------------------------------------------

    XMLNumber& operator=(const XMLNumber&);

};

XERCES_CPP_NAMESPACE_END

#endif