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HTML
331 lines
11 KiB
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Chapter 23. ElementHolder</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB C++ Standard Template Library API Reference" />
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<link rel="up" href="index.html" title="Berkeley DB C++ Standard Template Library API Reference" />
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<link rel="prev" href="Element_wrappers.html" title="Chapter 22. ElementRef and ElementHolder Wappers" />
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<link rel="next" href="stlElementHolderdstr_ElementHolder.html" title="~ElementHolder" />
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<div xmlns="" class="navheader">
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<p>Library Version 11.2.5.2</p>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Chapter 23. ElementHolder </th>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="Element_wrappers.html">Prev</a> </td>
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<th width="60%" align="center"> </th>
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<td width="20%" align="right"> <a accesskey="n" href="stlElementHolderdstr_ElementHolder.html">Next</a></td>
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<h2 class="title"><a id="ElementHolder"></a>Chapter 23. ElementHolder </h2>
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</div>
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</div>
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</div>
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<p>A wrapper class for primitive types. </p>
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<p>It has identical usage and public interface to the <a class="link" href="ElementRef.html" title="Chapter 24. ElementRef">ElementRef</a>
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class. </p>
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<h4><a id="id3538341"></a>
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See Also
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</h4>
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<p> </p>
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<p><a class="link" href="ElementRef.html" title="Chapter 24. ElementRef">ElementRef</a>
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. </p>
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<p>
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</p>
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<h4><a id="id3538569"></a> Public Members </h4>
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<th>Member</th>
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<th>Description</th>
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</thead>
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<tbody>
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<a class="xref" href="ElementHolder.html#stlElementHolderElementHolder" title="ElementHolder">ElementHolder</a>
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</td>
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<td>
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<p>Constructor. </p>
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<a class="xref" href="stlElementHolderdstr_ElementHolder.html" title="~ElementHolder">~ElementHolder</a>
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<td>
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<p>Destructor. </p>
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<td>
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<a class="xref" href="stlElementHolderoperator_ia.html" title="operator+=">operator+=</a>
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<td>
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<a class="xref" href="stlElementHolderoperator_sa.html" title="operator-=">operator-=</a>
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</td>
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<a class="xref" href="stlElementHolderoperator__ma.html" title="operator *=">operator *=</a>
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<a class="xref" href="stlElementHolderoperator_da.html" title="operator/=">operator/=</a>
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<a class="xref" href="stlElementHolderoperator_modasg.html" title="operator%=">operator%=</a>
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<a class="xref" href="stlElementHolderoperator__aa.html" title="operator &=">operator &=</a>
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<a class="xref" href="stlElementHolderoperator_oa.html" title="operator|=">operator|=</a>
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<td>
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<a class="xref" href="stlElementHolderoperator_xa.html" title="operator^=">operator^=</a>
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</td>
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<td>
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</td>
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<td>
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<a class="xref" href="stlElementHolderoperator_gt_ge.html" title="operator>>=">operator>>=</a>
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</td>
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<td>
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</td>
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<tr>
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<td>
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<a class="xref" href="stlElementHolderoperator_lt_le.html" title="operator<<=">operator<<=</a>
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</td>
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<td>
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<a class="xref" href="stlElementHolderoperator_incr.html" title="operator++">operator++</a>
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</td>
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<td>
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</td>
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<td>
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<a class="xref" href="stlElementHolderoperator_decr.html" title="operator--">operator--</a>
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</td>
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<td>
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</td>
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<tr>
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<td>
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<a class="xref" href="stlElementHolderoperator_assign.html" title="operator=">operator=</a>
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</td>
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<td>
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</td>
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<tr>
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<td>
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<a class="xref" href="stlElementHolderoperator_ptype.html" title="operator ptype">operator ptype</a>
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</td>
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<td>
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<p>This operator is a type converter. </p>
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</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stlElementHolder_DB_STL_value.html" title="_DB_STL_value">_DB_STL_value</a>
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</td>
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<td>
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<p>Returns the data element this wrapper object wraps;. </p>
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</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stlElementHolder_DB_STL_StoreElement.html" title="_DB_STL_StoreElement">_DB_STL_StoreElement</a>
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</td>
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<td>
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<p>Function to store the data element. </p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<h4><a id="id3538745"></a>
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Group</h4>
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<p>
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<a class="xref" href="Element_wrappers.html" title="Chapter 22. ElementRef and ElementHolder Wappers">
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ElementRef and ElementHolder Wappers </a>
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</p>
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<p>
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</p>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="stlElementHolderElementHolder"></a>ElementHolder</h2>
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</div>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="stlElementHolderElementHolder_details"></a>Function Details</h3>
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</div>
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</div>
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</div>
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<pre class="programlisting">
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ElementHolder(iterator_type *pitr=NULL)
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</pre>
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<p>Constructor. </p>
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<p>If the pitr parameter is NULL or the default value is used, the object created is a simple wrapper and not connected to a container. If a valid iterator parameter is passed in, the wrapped element will be associated with the matching key/data pair in the underlying container. </p>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="id3538530"></a>Parameters</h4>
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</div>
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</div>
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</div>
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<div class="sect4" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h5 class="title"><a id="id3539030"></a>pitr</h5>
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</div>
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</div>
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</div>
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<p>The iterator owning this object. </p>
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</div>
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</div>
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<pre class="programlisting">
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ElementHolder(const ptype &dt)
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</pre>
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<p>Constructor. </p>
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<p>Initializes an <a class="link" href="ElementRef.html" title="Chapter 24. ElementRef">ElementRef</a>
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wrapper without an iterator. It can only be used to wrap a data element in memory, it can't access an unerlying database. </p>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="id3539068"></a>Parameters</h4>
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</div>
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</div>
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</div>
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<div class="sect4" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h5 class="title"><a id="id3539071"></a>dt</h5>
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</div>
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</div>
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</div>
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<p>The base class object to initialize this object. </p>
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</div>
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</div>
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<pre class="programlisting">
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ElementHolder(const self &other)
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</pre>
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<p>Copy constructor. </p>
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<p>The constructor takes a "deep" copy. The created object will be identical to, but independent from the original object. </p>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="id3539087"></a>Parameters</h4>
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</div>
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</div>
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</div>
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<div class="sect4" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h5 class="title"><a id="id3539091"></a>other</h5>
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</div>
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</div>
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</div>
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<p>The object to clone from. </p>
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</div>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3538573"></a>Class</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="link" href="ElementHolder.html" title="Chapter 23. ElementHolder">
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ElementHolder</a>
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</p>
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</div>
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</div>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="Element_wrappers.html">Prev</a> </td>
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|||
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<td width="20%" align="center"> </td>
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|||
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<td width="40%" align="right"> <a accesskey="n" href="stlElementHolderdstr_ElementHolder.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">Chapter 22.
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|||
|
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ElementRef and ElementHolder Wappers </td>
|
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|
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<td width="20%" align="center">
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|||
|
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> ~ElementHolder</td>
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</html>
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