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| <li class="navelem"><a class="el" href="namespacesinga.html">singa</a></li><li class="navelem"><b>io</b></li><li class="navelem"><a class="el" href="classsinga_1_1io_1_1Writer.html">Writer</a></li> </ul> |
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| <a href="#pub-methods">Public Member Functions</a> | |
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| <div class="title">singa::io::Writer Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div> |
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| |
| <p>General <a class="el" href="classsinga_1_1io_1_1Writer.html" title="General Writer that provides functions for writing tuples. ">Writer</a> that provides functions for writing tuples. |
| <a href="classsinga_1_1io_1_1Writer.html#details">More...</a></p> |
| |
| <p><code>#include <<a class="el" href="writer_8h_source.html">writer.h</a>></code></p> |
| <div class="dynheader"> |
| Inheritance diagram for singa::io::Writer:</div> |
| <div class="dyncontent"> |
| <div class="center"><img src="classsinga_1_1io_1_1Writer__inherit__graph.png" border="0" usemap="#singa_1_1io_1_1Writer_inherit__map" alt="Inheritance graph"/></div> |
| <!-- MAP 0 --> |
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| <table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> |
| Public Member Functions</h2></td></tr> |
| <tr class="memitem:aa5a4ed9aae85f2f879563d094a6cc4f1"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classsinga_1_1io_1_1Writer.html#aa5a4ed9aae85f2f879563d094a6cc4f1">~Writer</a> ()</td></tr> |
| <tr class="memdesc:aa5a4ed9aae85f2f879563d094a6cc4f1"><td class="mdescLeft"> </td><td class="mdescRight">In case that users forget to call <a class="el" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448" title="Release resources. ">Close()</a> to release resources, e.g., memory, you can release them here. <a href="#aa5a4ed9aae85f2f879563d094a6cc4f1">More...</a><br /></td></tr> |
| <tr class="separator:aa5a4ed9aae85f2f879563d094a6cc4f1"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a2427e9a325544ca985b5b6729227f3ef"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classsinga_1_1io_1_1Writer.html#a2427e9a325544ca985b5b6729227f3ef">Open</a> (const std::string &path, Mode mode)=0</td></tr> |
| <tr class="memdesc:a2427e9a325544ca985b5b6729227f3ef"><td class="mdescLeft"> </td><td class="mdescRight">Open a file. <a href="#a2427e9a325544ca985b5b6729227f3ef">More...</a><br /></td></tr> |
| <tr class="separator:a2427e9a325544ca985b5b6729227f3ef"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:add7c77805b900595c2da748a4df8c448"><td class="memItemLeft" align="right" valign="top"><a id="add7c77805b900595c2da748a4df8c448"></a> |
| virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448">Close</a> ()=0</td></tr> |
| <tr class="memdesc:add7c77805b900595c2da748a4df8c448"><td class="mdescLeft"> </td><td class="mdescRight">Release resources. <br /></td></tr> |
| <tr class="separator:add7c77805b900595c2da748a4df8c448"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:afa52a9053af2363cb4680217a10c038a"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classsinga_1_1io_1_1Writer.html#afa52a9053af2363cb4680217a10c038a">Write</a> (const std::string &key, const std::string &value)=0</td></tr> |
| <tr class="memdesc:afa52a9053af2363cb4680217a10c038a"><td class="mdescLeft"> </td><td class="mdescRight">Write a key-value tuple. <a href="#afa52a9053af2363cb4680217a10c038a">More...</a><br /></td></tr> |
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| <tr class="memitem:a6dd928130b77f215b90e87b42137da48"><td class="memItemLeft" align="right" valign="top"><a id="a6dd928130b77f215b90e87b42137da48"></a> |
| virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classsinga_1_1io_1_1Writer.html#a6dd928130b77f215b90e87b42137da48">Flush</a> ()=0</td></tr> |
| <tr class="memdesc:a6dd928130b77f215b90e87b42137da48"><td class="mdescLeft"> </td><td class="mdescRight">Flush writing buffer if it has. <br /></td></tr> |
| <tr class="separator:a6dd928130b77f215b90e87b42137da48"><td class="memSeparator" colspan="2"> </td></tr> |
| </table> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>General <a class="el" href="classsinga_1_1io_1_1Writer.html" title="General Writer that provides functions for writing tuples. ">Writer</a> that provides functions for writing tuples. </p> |
| <p>Subclasses implement the functions for a specific data storage, e.g., CSV file, HDFS, image folder, leveldb, lmdb, etc. </p> |
| </div><h2 class="groupheader">Constructor & Destructor Documentation</h2> |
| <a id="aa5a4ed9aae85f2f879563d094a6cc4f1"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#aa5a4ed9aae85f2f879563d094a6cc4f1">◆ </a></span>~Writer()</h2> |
| |
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| <tr> |
| <td class="mlabels-left"> |
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| <td class="memname">virtual singa::io::Writer::~Writer </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">virtual</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>In case that users forget to call <a class="el" href="classsinga_1_1io_1_1Writer.html#add7c77805b900595c2da748a4df8c448" title="Release resources. ">Close()</a> to release resources, e.g., memory, you can release them here. </p> |
| |
| </div> |
| </div> |
| <h2 class="groupheader">Member Function Documentation</h2> |
| <a id="a2427e9a325544ca985b5b6729227f3ef"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a2427e9a325544ca985b5b6729227f3ef">◆ </a></span>Open()</h2> |
| |
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| <tr> |
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| <td class="memname">virtual bool singa::io::Writer::Open </td> |
| <td>(</td> |
| <td class="paramtype">const std::string & </td> |
| <td class="paramname"><em>path</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">Mode </td> |
| <td class="paramname"><em>mode</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">pure virtual</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Open a file. </p> |
| <p>path is the path to the disk BinFile, it can be</p><ul> |
| <li>a path to local disk file.</li> |
| <li>a path to local directory. This is to be compatible with the older version (DataShard). The KVFile is shard.dat under that directory</li> |
| <li>a hdfs file starting with "hdfs://" mode is open mode(kCreate, kAppend). </li> |
| </ul> |
| |
| <p>Implemented in <a class="el" href="classsinga_1_1io_1_1TextFileWriter.html#aaa543fe117f99b89b9e148b98bd02bcb">singa::io::TextFileWriter</a>, and <a class="el" href="classsinga_1_1io_1_1BinFileWriter.html#ad1c03151f8b23e5457448ab9adb66c9f">singa::io::BinFileWriter</a>.</p> |
| |
| </div> |
| </div> |
| <a id="afa52a9053af2363cb4680217a10c038a"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#afa52a9053af2363cb4680217a10c038a">◆ </a></span>Write()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">virtual bool singa::io::Writer::Write </td> |
| <td>(</td> |
| <td class="paramtype">const std::string & </td> |
| <td class="paramname"><em>key</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">const std::string & </td> |
| <td class="paramname"><em>value</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">pure virtual</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Write a key-value tuple. </p> |
| <p>return true if success, otherwise false. </p> |
| |
| <p>Implemented in <a class="el" href="classsinga_1_1io_1_1TextFileWriter.html#a39fb6b510dd20120ff6b7ce9da034400">singa::io::TextFileWriter</a>, and <a class="el" href="classsinga_1_1io_1_1BinFileWriter.html#adfea9905cf6eec1bf81b05c4c33c67f3">singa::io::BinFileWriter</a>.</p> |
| |
| </div> |
| </div> |
| <hr/>The documentation for this class was generated from the following file:<ul> |
| <li>/home/moaz/incubator-singa/include/singa/io/<a class="el" href="writer_8h_source.html">writer.h</a></li> |
| </ul> |
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