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+<a href="#nested-classes">Classes</a> &#124;
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+  <div class="headertitle"><div class="title">tuple.c File Reference</div></div>
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+
+<p>Tuple implementation for the Relational Algebra Engine.  
+<a href="#details">More...</a></p>
+<div class="textblock"><code>#include &lt;stdio.h&gt;</code><br />
+<code>#include &lt;stdlib.h&gt;</code><br />
+<code>#include &lt;string.h&gt;</code><br />
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+<tr class="memitem:a639960fa1a575569355816fadd7437ee" id="r_a639960fa1a575569355816fadd7437ee"><td class="memItemLeft" align="right" valign="top"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="tuple_8c.html#a639960fa1a575569355816fadd7437ee">tuple_create</a> (void)</td></tr>
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+<tr class="memdesc:a41061ae6a531d605c2bb4ea089edc674"><td class="mdescLeft">&#160;</td><td class="mdescRight">Print a Tuple to stdout.  <br /></td></tr>
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+<tr class="memdesc:abe09a57dbc3e53a9c75e7dfcd105e20a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Find an <a class="el" href="structAttribute.html">Attribute</a> in a Tuple by name.  <br /></td></tr>
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+<tr class="memdesc:a910c6d60f4130fc156f2c7d11c187be9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if two Tuples are equal (all attributes match).  <br /></td></tr>
+<tr class="separator:a910c6d60f4130fc156f2c7d11c187be9"><td class="memSeparator" colspan="2">&#160;</td></tr>
+</table>
+<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
+<div class="textblock"><p>Tuple implementation for the Relational Algebra Engine. </p>
+<p>Handles creation, destruction, and comparison of tuples, which are sets of attributes and serve as the elements of relations in the relational model. </p>
+</div><h2 class="groupheader">Function Documentation</h2>
+<a id="a63de66548cc83afcefc268f4019d2daf" name="a63de66548cc83afcefc268f4019d2daf"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#a63de66548cc83afcefc268f4019d2daf">&#9670;&#160;</a></span>tuple_add_attribute()</h2>
+
+<div class="memitem">
+<div class="memproto">
+      <table class="memname">
+        <tr>
+          <td class="memname">int tuple_add_attribute </td>
+          <td>(</td>
+          <td class="paramtype"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td>
+          <td class="paramname"><em>t</em>, </td>
+        </tr>
+        <tr>
+          <td class="paramkey"></td>
+          <td></td>
+          <td class="paramtype"><a class="el" href="structAttribute.html">Attribute</a> *&#160;</td>
+          <td class="paramname"><em>attr</em>&#160;</td>
+        </tr>
+        <tr>
+          <td></td>
+          <td>)</td>
+          <td></td><td></td>
+        </tr>
+      </table>
+</div><div class="memdoc">
+
+<p>Add an <a class="el" href="structAttribute.html">Attribute</a> to a Tuple. </p>
+<dl class="params"><dt>Parameters</dt><dd>
+  <table class="params">
+    <tr><td class="paramname">t</td><td>Pointer to the Tuple. </td></tr>
+    <tr><td class="paramname">attr</td><td>Pointer to the <a class="el" href="structAttribute.html">Attribute</a> to add. </td></tr>
+  </table>
+  </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>1 if added, 0 if already present, -1 on error. </dd></dl>
+
+</div>
+</div>
+<a id="a639960fa1a575569355816fadd7437ee" name="a639960fa1a575569355816fadd7437ee"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#a639960fa1a575569355816fadd7437ee">&#9670;&#160;</a></span>tuple_create()</h2>
+
+<div class="memitem">
+<div class="memproto">
+      <table class="memname">
+        <tr>
+          <td class="memname"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> * tuple_create </td>
+          <td>(</td>
+          <td class="paramtype">void&#160;</td>
+          <td class="paramname"></td><td>)</td>
+          <td></td>
+        </tr>
+      </table>
+</div><div class="memdoc">
+
+<p>Create a new Tuple. </p>
+<dl class="section return"><dt>Returns</dt><dd>Pointer to new Tuple, or NULL on failure. </dd></dl>
+
+</div>
+</div>
+<a id="aeefa14da7fb7b4b40b8da4e1b536323e" name="aeefa14da7fb7b4b40b8da4e1b536323e"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#aeefa14da7fb7b4b40b8da4e1b536323e">&#9670;&#160;</a></span>tuple_destroy()</h2>
+
+<div class="memitem">
+<div class="memproto">
+      <table class="memname">
+        <tr>
+          <td class="memname">void tuple_destroy </td>
+          <td>(</td>
+          <td class="paramtype"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td>
+          <td class="paramname"><em>t</em></td><td>)</td>
+          <td></td>
+        </tr>
+      </table>
+</div><div class="memdoc">
+
+<p>Destroy a Tuple and free its memory. </p>
+<dl class="params"><dt>Parameters</dt><dd>
+  <table class="params">
+    <tr><td class="paramname">t</td><td>Pointer to the Tuple to destroy. </td></tr>
+  </table>
+  </dd>
+</dl>
+
+</div>
+</div>
+<a id="a910c6d60f4130fc156f2c7d11c187be9" name="a910c6d60f4130fc156f2c7d11c187be9"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#a910c6d60f4130fc156f2c7d11c187be9">&#9670;&#160;</a></span>tuple_equals()</h2>
+
+<div class="memitem">
+<div class="memproto">
+      <table class="memname">
+        <tr>
+          <td class="memname">int tuple_equals </td>
+          <td>(</td>
+          <td class="paramtype"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td>
+          <td class="paramname"><em>a</em>, </td>
+        </tr>
+        <tr>
+          <td class="paramkey"></td>
+          <td></td>
+          <td class="paramtype"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td>
+          <td class="paramname"><em>b</em>&#160;</td>
+        </tr>
+        <tr>
+          <td></td>
+          <td>)</td>
+          <td></td><td></td>
+        </tr>
+      </table>
+</div><div class="memdoc">
+
+<p>Check if two Tuples are equal (all attributes match). </p>
+<dl class="params"><dt>Parameters</dt><dd>
+  <table class="params">
+    <tr><td class="paramname">a</td><td>Pointer to first Tuple. </td></tr>
+    <tr><td class="paramname">b</td><td>Pointer to second Tuple. </td></tr>
+  </table>
+  </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>1 if equal, 0 otherwise. </dd></dl>
+
+</div>
+</div>
+<a id="abe09a57dbc3e53a9c75e7dfcd105e20a" name="abe09a57dbc3e53a9c75e7dfcd105e20a"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#abe09a57dbc3e53a9c75e7dfcd105e20a">&#9670;&#160;</a></span>tuple_find_attribute()</h2>
+
+<div class="memitem">
+<div class="memproto">
+      <table class="memname">
+        <tr>
+          <td class="memname"><a class="el" href="structAttribute.html">Attribute</a> * tuple_find_attribute </td>
+          <td>(</td>
+          <td class="paramtype"><a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td>
+          <td class="paramname"><em>t</em>, </td>
+        </tr>
+        <tr>
+          <td class="paramkey"></td>
+          <td></td>
+          <td class="paramtype">const char *&#160;</td>
+          <td class="paramname"><em>name</em>&#160;</td>
+        </tr>
+        <tr>
+          <td></td>
+          <td>)</td>
+          <td></td><td></td>
+        </tr>
+      </table>
+</div><div class="memdoc">
+
+<p>Find an <a class="el" href="structAttribute.html">Attribute</a> in a Tuple by name. </p>
+<dl class="params"><dt>Parameters</dt><dd>
+  <table class="params">
+    <tr><td class="paramname">t</td><td>Pointer to the Tuple. </td></tr>
+    <tr><td class="paramname">name</td><td>Name of the <a class="el" href="structAttribute.html">Attribute</a> to find. </td></tr>
+  </table>
+  </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Pointer to the found <a class="el" href="structAttribute.html">Attribute</a>, or NULL if not found. </dd></dl>
+
+</div>
+</div>
+<a id="a41061ae6a531d605c2bb4ea089edc674" name="a41061ae6a531d605c2bb4ea089edc674"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#a41061ae6a531d605c2bb4ea089edc674">&#9670;&#160;</a></span>tuple_print()</h2>
+
+<div class="memitem">
+<div class="memproto">
+      <table class="memname">
+        <tr>
+          <td class="memname">void tuple_print </td>
+          <td>(</td>
+          <td class="paramtype">const <a class="el" href="tuple_8h.html#a1dc581c6ec65e7a8712da56fb3a6d2ef">Tuple</a> *&#160;</td>
+          <td class="paramname"><em>t</em></td><td>)</td>
+          <td></td>
+        </tr>
+      </table>
+</div><div class="memdoc">
+
+<p>Print a Tuple to stdout. </p>
+<dl class="params"><dt>Parameters</dt><dd>
+  <table class="params">
+    <tr><td class="paramname">t</td><td>Pointer to the Tuple to print. </td></tr>
+  </table>
+  </dd>
+</dl>
+
+</div>
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