Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/class_c_database.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
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Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608

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<title>TB10.1 Example Applications: CDatabase Class Reference</title>
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<h1>CDatabase Class Reference</h1><!-- doxytag: class="CDatabase" -->
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<a href="class_c_database-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#9a3adb67c04d4f1432556aab4149841e">~CDatabase</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#89047671e6c027e4551a8b7a276add96">CreateDatabaseL</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#e9fea33b26bf2ba7cdad59361ee45221">ReadfromDatabaseL</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#5df7d7393cfb36c850d562df4f35a0f6">WritetoDatabaseL</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#3546e400216858a7ae560808a9d1465e">PeriodicReadFuncL</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#4a0f7606f98a6db98addb52a7ca2b881">PeriodicWriteFuncL</a> ()</td></tr>

<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="class_c_database.html">CDatabase</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#ab355b9be127debd7a5d54e5ac8f9021">NewL</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">static TInt&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#26f8d942e0dc5c8050afd5cbb0d80f18">PeriodicReadL</a> (TAny *aPtr)</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">static TInt&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#726242c03596e80a98deeef4c5c1681c">PeriodicWriteL</a> (TAny *aPtr)</td></tr>

<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_database.html#d3d6215a0fa65e7ead3533065905a747">ConstructL</a> ()</td></tr>

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<hr><a name="_details"></a><h2>Detailed Description</h2>
This is a database class which is used by two different threads to demonstrate thread synchronization using a semaphore. 
<p>Definition at line <a class="el" href="_c_database_8h-source.html#l00028">28</a> of file <a class="el" href="_c_database_8h-source.html">CDatabase.h</a>.</p>
<hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="9a3adb67c04d4f1432556aab4149841e"></a><!-- doxytag: member="CDatabase::~CDatabase" ref="9a3adb67c04d4f1432556aab4149841e" args="()" -->
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          <td class="memname">CDatabase::~CDatabase           </td>
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Destructor 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00041">41</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="ab355b9be127debd7a5d54e5ac8f9021"></a><!-- doxytag: member="CDatabase::NewL" ref="ab355b9be127debd7a5d54e5ac8f9021" args="()" -->
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          <td class="memname"><a class="el" href="class_c_database.html">CDatabase</a> * CDatabase::NewL           </td>
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<a class="el" href="class_c_database.html#ab355b9be127debd7a5d54e5ac8f9021">NewL()</a> 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00029">29</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="89047671e6c027e4551a8b7a276add96"></a><!-- doxytag: member="CDatabase::CreateDatabaseL" ref="89047671e6c027e4551a8b7a276add96" args="()" -->
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          <td class="memname">void CDatabase::CreateDatabaseL           </td>
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Creates database in the store and create a table and add columns to it. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00079">79</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="e9fea33b26bf2ba7cdad59361ee45221"></a><!-- doxytag: member="CDatabase::ReadfromDatabaseL" ref="e9fea33b26bf2ba7cdad59361ee45221" args="()" -->
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This function is called by the ReaderThread in SemaphoreExample. It creates a console to display the data read from the database and starts a periodic function to read the database at an interval of 1 second. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00220">220</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="5df7d7393cfb36c850d562df4f35a0f6"></a><!-- doxytag: member="CDatabase::WritetoDatabaseL" ref="5df7d7393cfb36c850d562df4f35a0f6" args="()" -->
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This function is called by the WriteThread in the SemaphoreExample and it starts a periodic function to write data in the database at an interval of 1 sec. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00135">135</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="26f8d942e0dc5c8050afd5cbb0d80f18"></a><!-- doxytag: member="CDatabase::PeriodicReadL" ref="26f8d942e0dc5c8050afd5cbb0d80f18" args="(TAny *aPtr)" -->
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The call back function associated with the CPeriodic object of the <a class="el" href="class_c_database.html">CDatabase</a> class and is called by the <a class="el" href="class_c_database.html#e9fea33b26bf2ba7cdad59361ee45221">ReadfromDatabaseL()</a> function. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00237">237</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="3546e400216858a7ae560808a9d1465e"></a><!-- doxytag: member="CDatabase::PeriodicReadFuncL" ref="3546e400216858a7ae560808a9d1465e" args="()" -->
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This function is called periodically at an interval of 1 second, it opens the database , reads one row and displays the numbers to the console. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00248">248</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="726242c03596e80a98deeef4c5c1681c"></a><!-- doxytag: member="CDatabase::PeriodicWriteL" ref="726242c03596e80a98deeef4c5c1681c" args="(TAny *aPtr)" -->
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The call back function associated with the CPeriodic object of the <a class="el" href="class_c_database.html">CDatabase</a> class and is called by the <a class="el" href="class_c_database.html#5df7d7393cfb36c850d562df4f35a0f6">WritetoDatabaseL()</a> function. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00145">145</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="4a0f7606f98a6db98addb52a7ca2b881"></a><!-- doxytag: member="CDatabase::PeriodicWriteFuncL" ref="4a0f7606f98a6db98addb52a7ca2b881" args="()" -->
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This function is called periodically at an interval of 1 sec, it opens the database, inserts one row and fills it with integer values. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00157">157</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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<a class="anchor" name="d3d6215a0fa65e7ead3533065905a747"></a><!-- doxytag: member="CDatabase::ConstructL" ref="d3d6215a0fa65e7ead3533065905a747" args="()" -->
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Constructs a CPeriodic object, a database , opens the global semaphore. 
<p>Definition at line <a class="el" href="_c_database_8cpp-source.html#l00054">54</a> of file <a class="el" href="_c_database_8cpp-source.html">CDatabase.cpp</a>.</p>

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