xercesc/util/XMLNumber.hpp

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *      http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 /*
0019  * $Id$
0020  */
0021
0022 #if !defined(XERCESC_INCLUDE_GUARD_XMLNUMBER_HPP)
0023 #define XERCESC_INCLUDE_GUARD_XMLNUMBER_HPP
0024
0025 #include <xercesc/internal/XSerializable.hpp>
0026 #include <xercesc/util/XMemory.hpp>
0027
0028 XERCES_CPP_NAMESPACE_BEGIN
0029
0030 class XMLUTIL_EXPORT XMLNumber : public XSerializable, public XMemory
0031 {
0032 public:
0033
0034     enum
0035     {
0036         LESS_THAN     = -1,
0037         EQUAL         = 0,
0038         GREATER_THAN  = 1,
0039         INDETERMINATE = 2
0040     };
0041
0042     enum NumberType {
0043         Float,
0044         Double,
0045         BigDecimal,
0046         DateTime,
0047         UnKnown
0048     };
0049
0050     virtual ~XMLNumber();
0051
0052     /**
0053      *  Return string representation of the decimal value.
0054      *  A decimal point will be included as necessary.
0055      *  Similar to toString above, but the internal buffer is
0056      *  returned directly, user is not required to delete
0057      *  the returned buffer
0058      */
0059     virtual XMLCh*     getRawData() const = 0;
0060
0061     /**
0062      *  Return the original and converted value of the original data.
0063      *  (applicable to double/float)
0064      *
0065      *  The internal buffer is returned directly, user is not required
0066      *  to delete the returned buffer
0067      */
0068     virtual const XMLCh*     getFormattedString() const = 0;
0069
0070     /**
0071      * Returns the sign of this number
0072      *
0073      * -1   negative
0074      *  0   zero
0075      *  1   positive
0076      *
0077      */
0078     virtual int        getSign() const = 0;
0079
0080     /***
0081      * Support for Serialization/De-serialization
0082      ***/
0083     DECL_XSERIALIZABLE(XMLNumber)
0084
0085     static XMLNumber*          loadNumber(XMLNumber::NumberType   numType
0086                                         , XSerializeEngine&       serEng);
0087
0088 protected:
0089
0090     XMLNumber();
0091     XMLNumber(const XMLNumber&);
0092
0093 private:
0094     // -----------------------------------------------------------------------
0095     //  Unimplemented operators
0096     // -----------------------------------------------------------------------
0097     XMLNumber& operator=(const XMLNumber&);
0098 };
0099
0100 XERCES_CPP_NAMESPACE_END
0101
0102 #endif