1 /*
2  * Copyright (c) 2011-2014, Intel Corporation
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice, this
9  * list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation and/or
13  * other materials provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its contributors
16  * may be used to endorse or promote products derived from this software without
17  * specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #pragma once
32 #include "XmlDocSource.h"
33 #include "XmlSerializingContext.h"
34 
35 /**
36   * The CXmlDocSink class defines how to use a CXmlDocSource.
37   * The interaction between the xml source and xml sink is defined
38   * in the process method of CXmlDocSink. One can subclass CXmlDocSink
39   * for different purpose by implementing the doProcess method and then
40   * use it with any existing implementation of CXmlDocSource.
41   */
42 class CXmlDocSink
43 {
44 public:
45     /**
46       * Method to be called to use an xmlDocSource.
47       * Any subclass of XmlDocSink must implement the doProcess
48       * method that will define how to use the xmlDocSource.
49       *
50       * @param[in] xmlDocSource a CXmlDocSource reference
51       * @param[in] serializingContext a CXmlSerializing Context reference
52       *
53       * @return true is there was no error during the processing of xmlDocSource
54       */
process(CXmlDocSource & xmlDocSource,CXmlSerializingContext & serializingContext)55     bool process(CXmlDocSource& xmlDocSource, CXmlSerializingContext& serializingContext)
56     {
57         if (!xmlDocSource.populate(serializingContext)) {
58             return false;
59         }
60 
61         return doProcess(xmlDocSource, serializingContext);
62     }
63 
~CXmlDocSink()64     virtual ~CXmlDocSink() {}
65 
66 private:
67     /**
68       * Handle for subclasses to process the source.
69       * This method will define what to do with the xmlDocSource.
70       *
71       * @param[in] xmlDocSource a CXmlDocSource reference
72       * @param[in] serializingContext a CXmlSerializing Context reference
73       *
74       * @return true is there was no error during the processing of xmlDocSource
75       */
76     virtual bool doProcess(CXmlDocSource& xmlDocSource, CXmlSerializingContext& serializingContext) = 0;
77 };
78