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# XMLNetAccessor.hpp

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    00001 /*
    00002  * Copyright 1999-2000,2004 The Apache Software Foundation.
    00003  *
    00004  * Licensed under the Apache License, Version 2.0 (the "License");
    00005  * you may not use this file except in compliance with the License.
    00006  * You may obtain a copy of the License at
    00007  *
    00008  *      http://www.apache.org/licenses/LICENSE-2.0
    00009  *
    00010  * Unless required by applicable law or agreed to in writing, software
    00011  * distributed under the License is distributed on an "AS IS" BASIS,
    00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    00013  * See the License for the specific language governing permissions and
    00014  * limitations under the License.
    00015  */
    00016
    00017 /*
    00018  * $Id: XMLNetAccessor.hpp 176026 2004-09-08 13:57:07Z peiyongz $
    00019  */
    00020
    00021 #if !defined(XMLNETACCESSOR_HPP)
    00022 #define XMLNETACCESSOR_HPP
    00023
    00024 #include <xercesc/util/XMLURL.hpp>
    00025 #include <xercesc/util/XMLException.hpp>
    00026
    00027 XERCES_CPP_NAMESPACE_BEGIN
    00028
    00029 class BinInputStream;
    00030
    00031 //  This class holds advanced informations about the HTTP connection
    00032 class  XMLNetHTTPInfo
    00033 {
    00034 public:
    00035     XMLNetHTTPInfo();
    00036
    00037     typedef enum {
    00038         GET,
    00039         PUT,
    00040         POST
    00041     } HTTPMethod;
    00042
    00043     // -----------------------------------------------------------------------
    00044     //  Data members
    00045     //
    00046     //  fHTTPMethod
    00047     //      The type of the HTTP request
    00048     //
    00049     //  fHeaders
    00050     //      The extra headers that will be sent as part of the request; the format is
    00051     //      Header1: Value\r\nHeader2: Value\r\n
    00052     //
    00053     //  fHeadersLen
    00054     //      The length of the string pointed by fHeaders, in bytes
    00055     //
    00056     //  fPayload
    00057     //      The extra data that will be sent after the headers; in the case of a PUT
    00058     //      operation, this is the content of the resource being posted. It can be binary data
    00059     //
    00060     //  fPayloadLen
    00061     //      The length of the binary buffer pointed by fPayload, in bytes
    00062     //
    00063     HTTPMethod      fHTTPMethod;
    00064     const char*     fHeaders;
    00065     int             fHeadersLen;
    00066     const char*     fPayload;
    00067     int             fPayloadLen;
    00068 };
    00069
    00070 inline XMLNetHTTPInfo::XMLNetHTTPInfo()
    00071 :fHTTPMethod(XMLNetHTTPInfo::GET),
    00072  fHeaders(0),
    00073  fHeadersLen(0),
    00074  fPayload(0),
    00075  fPayloadLen(0)
    00076 {
    00077 }
    00078
    00079
    00080 //
    00081 //  This class is an abstract interface via which the URL class accesses
    00082 //  net access services. When any source URL is not in effect a local file
    00083 //  path, then the URL class is used to look at it. Then the URL class can
    00084 //  be asked to make a binary input stream via which the referenced resource
    00085 //  can be read in.
    00086 //
    00087 //  The URL class will use an object derived from this class to create a
    00088 //  binary stream for the URL to return. The object it uses is provided by
    00089 //  the platform utils, and is actually provided by the per-platform init
    00090 //  code so each platform can decide what actual implementation it wants to
    00091 //  use.
    00092 //
    00093 class  XMLNetAccessor : public XMemory
    00094 {
    00095 public :
    00096     // -----------------------------------------------------------------------
    00097     //  Virtual destructor
    00098     // -----------------------------------------------------------------------
    00099     virtual ~XMLNetAccessor()
    00100     {
    00101     }
    00102
    00103
    00104     // -----------------------------------------------------------------------
    00105     //  The virtual net accessor interface
    00106     // -----------------------------------------------------------------------
    00107     virtual const XMLCh* getId() const = 0;
    00108
    00109     virtual BinInputStream* makeNew
    00110     (
    00111         const   XMLURL&                 urlSrc,
    00112         const   XMLNetHTTPInfo*         httpInfo=0
    00113     ) = 0;
    00114
    00115
    00116 protected :
    00117     // -----------------------------------------------------------------------
    00118     //  Hidden constructors
    00119     // -----------------------------------------------------------------------
    00120     XMLNetAccessor()
    00121     {
    00122     }
    00123
    00124
    00125 private :
    00126     // -----------------------------------------------------------------------
    00127     //  Unimplemented constructors and operators
    00128     // -----------------------------------------------------------------------
    00129     XMLNetAccessor(const XMLNetAccessor&);
    00130     XMLNetAccessor& operator=(const XMLNetAccessor&);
    00131 };
    00132
    00133 MakeXMLException(NetAccessorException, )
    00134
    00135 XERCES_CPP_NAMESPACE_END
    00136
    00137 #endif

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