classdbfielddescriptor.html

俄罗斯牛人KK的作品,著名的ORDBMS,这里上传最新的3.39版本源代码.希望了解对象关系数据库的同好,请不要错过.

<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Size of the record without one field. This method is used to implement  automatically updated inverse references. This method performs interation thtough all components in one scope and recursively invoke itself for structure and array components.  <dl compact><dt><b>Parameters: </b></dt><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>field</em>&nbsp;</td><td>
list of the fields in one scope </td></tr>
<tr><td valign=top><em>base</em>&nbsp;</td><td>
pointer inside database </td></tr>
<tr><td valign=top><em>size</em>&nbsp;</td><td>
[in/out] size of the record </td></tr>
</table>
</dl><dl compact><dt><b>Returns: </b></dt><dd>
offset of last field </dl>    </td>
  </tr>
</table>
<a name="dbFieldDescriptora5" doxytag="dbFieldDescriptor::storeRecordFields"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> size_t dbFieldDescriptor::storeRecordFields </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">byte *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>dst</em>, </td>
        </tr>
        <tr>
          <td></td>
          <td></td>
          <td class="md" nowrap>byte *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>src</em>, </td>
        </tr>
        <tr>
          <td></td>
          <td></td>
          <td class="md" nowrap>size_t&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>offs</em>, </td>
        </tr>
        <tr>
          <td></td>
          <td></td>
          <td class="md" nowrap>bool&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>insert</em></td>
        </tr>
        <tr>
          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>

      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Store record fields in the databases This method performs interation thtough all components in one scope and recursively invoke itself for structure and array components.  <dl compact><dt><b>Parameters: </b></dt><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>dst</em>&nbsp;</td><td>
place in the database where record should be stored </td></tr>
<tr><td valign=top><em>src</em>&nbsp;</td><td>
pointer to the application object </td></tr>
<tr><td valign=top><em>offs</em>&nbsp;</td><td>
offset to the end of varying part </td></tr>
<tr><td valign=top><em>insert</em>&nbsp;</td><td>
flag used to distringuish update fro insert (needed for autoincremented fields) </td></tr>
</table>
</dl><dl compact><dt><b>Returns: </b></dt><dd>
size of the record </dl>    </td>
  </tr>
</table>
<hr><h2>Member Data Documentation</h2>
<a name="dbFieldDescriptorm24" doxytag="dbFieldDescriptor::alignment"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> size_t dbFieldDescriptor::alignment
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Alignment of the field (for structures it is equal to the maximum required alignment  of it's components     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm18" doxytag="dbFieldDescriptor::appOffs"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> int dbFieldDescriptor::appOffs
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Offset to the field in application     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm23" doxytag="dbFieldDescriptor::appSize"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> size_t dbFieldDescriptor::appSize
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Size of the object in application     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm15" doxytag="dbFieldDescriptor::appType"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> int dbFieldDescriptor::appType
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Type of the field in application     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm31" doxytag="dbFieldDescriptor::arrayAllocator"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> void(* dbFieldDescriptor::arrayAllocator)(<a class="el" href="classdbAnyArray.html">dbAnyArray</a>* array, void* data, size_t length)
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Allocator of array components     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm25" doxytag="dbFieldDescriptor::comparator"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> dbUDTComparator dbFieldDescriptor::comparator
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Comparator for user defined types     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm19" doxytag="dbFieldDescriptor::components"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> dbFieldDescriptor* dbFieldDescriptor::components
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Subcomponents of the field (for structures and arrays)     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm17" doxytag="dbFieldDescriptor::dbsOffs"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> int dbFieldDescriptor::dbsOffs
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Offset to the field in database     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm22" doxytag="dbFieldDescriptor::dbsSize"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> size_t dbFieldDescriptor::dbsSize
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Size of the record in database     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm11" doxytag="dbFieldDescriptor::defTable"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> <a class="el" href="classdbTableDescriptor.html">dbTableDescriptor</a>* dbFieldDescriptor::defTable
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Definition of the table to which this field belongs     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm6" doxytag="dbFieldDescriptor::fieldNo"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> int dbFieldDescriptor::fieldNo
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Column number     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm20" doxytag="dbFieldDescriptor::hashTable"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> oid_t dbFieldDescriptor::hashTable
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Hash table (for fields which are indexed by means of hash table)     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm16" doxytag="dbFieldDescriptor::indexType"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> int dbFieldDescriptor::indexType
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Type of field index (bit combination of constants defined in dbIndexType)     </td>
  </tr>
</table>
<a name="dbFieldDescriptorm12" doxytag="dbFieldDescriptor::inverseRef"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
  <tr>
    <td class="md">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"> dbFieldDescriptor* dbFieldDescriptor::inverseRef
      </table>
    </td>
  </tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>