classdbdatabase.html

FastDb是高效的内存数据库系统

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<p>
Add new indices to the table. <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>alter</em>&nbsp;</td><td>if true than indices can be added, otherwise there are some other active clients and adding new indices about which they will not know can lead to inconsistncy </td></tr>
    <tr><td valign=top><em>desc</em>&nbsp;</td><td>new table descriptor </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>true if indices were succesfully added </dd></dl>
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<a class="anchor" name="dbSubSqlb40" doxytag="dbDatabase::addNewTable" ></a><p>
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          <td class="md" nowrap valign="top"> oid_t dbDatabase::addNewTable </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classdbTableDescriptor.html">dbTableDescriptor</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>desc</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
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<p>
Add new table to the database <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>desc</em>&nbsp;</td><td>- descriptor of new table </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>oid of created table descriptor record </dd></dl>
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<a class="anchor" name="dbSubSqlb19" doxytag="dbDatabase::allocate" ></a><p>
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          <td class="md" nowrap valign="top"> offs_t dbDatabase::allocate </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">size_t&nbsp;</td>
          <td class="mdname" nowrap> <em>size</em>, </td>
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          <td class="md" nowrap>oid_t&nbsp;</td>
          <td class="mdname" nowrap> <em>oid</em> = 0</td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [protected]</code></td>
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<p>
Allocate object in the database e<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>size</em>&nbsp;</td><td>size of alocated object </td></tr>
    <tr><td valign=top><em>oid</em>&nbsp;</td><td>if oid is not 0, then allocated region position is stored in correcpondent cell of object index (needed for allocation of bitmap pages) </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>position of allcoated region </dd></dl>
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<a class="anchor" name="dbSubSqlb23" doxytag="dbDatabase::allocateId" ></a><p>
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          <td class="md" nowrap valign="top"> oid_t dbDatabase::allocateId </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>n</em> = 1          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
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<p>
Allocate object identifier(s) <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>number</em>&nbsp;</td><td>of allocated object indentifiers </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>object idenitifer (in case if n greater than 1, all n subsequent OIDs are allocated and first one is returned </dd></dl>
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<a class="anchor" name="dbSubSqlb27" doxytag="dbDatabase::allocateObject" ></a><p>
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          <td class="md" nowrap valign="top"> oid_t dbDatabase::allocateObject </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">dbInternalObject&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>marker</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, protected]</code></td>
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<p>
Allocate internal object <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>market</em>&nbsp;</td><td>internal object tag </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>oid of allocated object </dd></dl>
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<a class="anchor" name="dbSubSqlb29" doxytag="dbDatabase::allocateRow" ></a><p>
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          <td class="md" nowrap valign="top"> void dbDatabase::allocateRow </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">oid_t&nbsp;</td>
          <td class="mdname" nowrap> <em>tableId</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>oid_t&nbsp;</td>
          <td class="mdname" nowrap> <em>oid</em>, </td>
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          <td></td>
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          <td class="md" nowrap>size_t&nbsp;</td>
          <td class="mdname" nowrap> <em>size</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [protected]</code></td>
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<p>
Allocate record with specified OID <dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>tableId</em>&nbsp;</td><td>object identifier of the table </td></tr>
    <tr><td valign=top><em>oid</em>&nbsp;</td><td>record OID </td></tr>
    <tr><td valign=top><em>size</em>&nbsp;</td><td>size of the created record as table descriptor in the database </td></tr>
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