dbconstraint.html

Medi 这是一个基于Java的媒体文件归档器工具

<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#sonTables">sonTables</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It contains all son tables of the one referenced by this constraint.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#table">table</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The referenced table to check.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#UPDATE_CASCADE">UPDATE_CASCADE</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It means that an UPDATE-CASCADE operation is outgoing. </TD>
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<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#UPDATE_OPERATION">UPDATE_OPERATION</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It represents a normal UPDATE operation.</TD>
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<CODE>protected &nbsp;java.lang.Integer[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#updateCascadeChildren">updateCascadeChildren</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Currently unused.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;java.util.List[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#updateFromLists">updateFromLists</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contains an array of <CODE>fromList</CODE>-like lists, to perform update
 operations in son tables.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;java.util.List[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#updateIntoLists">updateIntoLists</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Contains an array of <CODE>intoList</CODE>-like lists, to perform update
 operations in son tables.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;java.lang.Integer[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#updateOperations">updateOperations</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It contains the update operations for each father table.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../javatools/db/DbExpr.html">DbExpr</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#where">where</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A DbExpr clause used int DELETE/UPDATE operations.</TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<B>Constructor Summary</B></FONT></TD>
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<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#DbConstraint()">DbConstraint</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates new DbConstraint</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#DbConstraint(javatools.db.DbAbstractTable)">DbConstraint</A></B>(<A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A>&nbsp;tbl)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a new DbConstraint for a specified table.</TD>
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<!-- ========== METHOD SUMMARY =========== -->

<A NAME="method_summary"><!-- --></A>
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<B>Method Summary</B></FONT></TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#build()">build</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After all settings, it finally builds all static references.</TD>
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<CODE>abstract &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#check(int)">check</A></B>(int&nbsp;operation)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After setting all dynamic (i.e. operations, lists etc.) information, it checks
 explicitly if all operations can be done. </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#checkChildren()">checkChildren</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks recursively each son.</TD>
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<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#checkFathers()">checkFathers</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Performs checking for father tables. </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#checkThis(int)">checkThis</A></B>(int&nbsp;operation)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Performs base checks.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#clear()">clear</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clears everything.</TD>
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<CODE>protected &nbsp;java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#clone()">clone</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clones this object. </TD>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getAutomaticChecking()">getAutomaticChecking</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the current automatic checking setting.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getConstraintEmulation()">getConstraintEmulation</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns if constraint emulation is enabled.</TD>
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<CODE>&nbsp;java.lang.Object[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getDefaultValues(int)">getDefaultValues</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an array containing the default values for fields of a father table
 whose index is specified.</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getDeleteOperation(int)">getDeleteOperation</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns what kind of operation will be done in case of a deletion of the father
 table specified by <CODE>index</CODE>.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javatools/db/DbColumn.html">DbColumn</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getFatherColumns(int)">getFatherColumns</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the referenced father columns of a father table whose index is
 specified.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getFatherTable(int)">getFatherTable</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a father table whose index is specified.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getFatherTablesCount()">getFatherTablesCount</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the number of referenced father tables.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javatools/db/DbColumn.html">DbColumn</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getRefColumns(int)">getRefColumns</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the referencing columns of THIS table for a father table whose index
 is specified.</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getSonFatherIndex(int)">getSonFatherIndex</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns in which position a son table references THIS table in its constraint.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getSonTable(int)">getSonTable</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a son table whose index is specified.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getSonTablesCount()">getSonTablesCount</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the number of son tables.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getTable()">getTable</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the referenced table.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#getUpdateOperation(int)">getUpdateOperation</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns what kind of operation will be done in case of an update of the father
 table specified by <CODE>index</CODE>.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#initLists()">initLists</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Builds all dynamic lists (where clauses, constraints etc.).</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#initStaticLists()">initStaticLists</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inits static lists, like indexes of son tables, default values of father tables
 etc.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#setAutomaticChecking(boolean)">setAutomaticChecking</A></B>(boolean&nbsp;value)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets a flag to represent automatic checking at all times.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#setConstraintEmulation(boolean)">setConstraintEmulation</A></B>(boolean&nbsp;value)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the constraint emulation.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#setSelector(javatools.db.DbSelector)">setSelector</A></B>(<A HREF="../../javatools/db/DbSelector.html">DbSelector</A>&nbsp;pSelector)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the selector for an INSERT operation.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#setValueLists(java.util.List, java.util.List)">setValueLists</A></B>(java.util.List&nbsp;pIntoList,
              java.util.List&nbsp;pFromList)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the lists to perform INSERT/UPDATE operations.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#setWhere(javatools.db.DbExpr)">setWhere</A></B>(<A HREF="../../javatools/db/DbExpr.html">DbExpr</A>&nbsp;pWhere)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the "where" clause for an DELETE/UPDATE operation.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#update(int)">update</A></B>(int&nbsp;operation)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Actually updates the table and all of its son tables. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javatools/db/DbConstraint.html#updateThis(int)">updateThis</A></B>(int&nbsp;operation)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Performs base update. </TD>
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&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
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