dbconstraint.html

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<!-- ============ FIELD DETAIL =========== -->

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<B>Field Detail</B></FONT></TD>
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<A NAME="INSERT_OPERATION"><!-- --></A><H3>
INSERT_OPERATION</H3>
<PRE>
public static final int <B>INSERT_OPERATION</B></PRE>
<DL>
<DD>It represents an INSERT operation.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.INSERT_OPERATION">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="DELETE_OPERATION"><!-- --></A><H3>
DELETE_OPERATION</H3>
<PRE>
public static final int <B>DELETE_OPERATION</B></PRE>
<DL>
<DD>It represents a DELETE operation.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.DELETE_OPERATION">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="UPDATE_OPERATION"><!-- --></A><H3>
UPDATE_OPERATION</H3>
<PRE>
public static final int <B>UPDATE_OPERATION</B></PRE>
<DL>
<DD>It represents a normal UPDATE operation.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.UPDATE_OPERATION">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="UPDATE_CASCADE"><!-- --></A><H3>
UPDATE_CASCADE</H3>
<PRE>
protected static final int <B>UPDATE_CASCADE</B></PRE>
<DL>
<DD>It means that an UPDATE-CASCADE operation is outgoing. It is protected because
 it is useful only for internal checks-updates.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.UPDATE_CASCADE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="DO_NOTHING"><!-- --></A><H3>
DO_NOTHING</H3>
<PRE>
public static final int <B>DO_NOTHING</B></PRE>
<DL>
<DD>It means that, in case of an UPDATE/DELETE operation, the table MUST NOT do
 anything to repair itself.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.DO_NOTHING">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="SET_NULL"><!-- --></A><H3>
SET_NULL</H3>
<PRE>
public static final int <B>SET_NULL</B></PRE>
<DL>
<DD>It means that, in case of an UPDATE/DELETE operation, the constraint MUST set
 an array of fields in involved rows to NULL values, to repair referenced table.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.SET_NULL">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="SET_DEFAULT"><!-- --></A><H3>
SET_DEFAULT</H3>
<PRE>
public static final int <B>SET_DEFAULT</B></PRE>
<DL>
<DD>It means that, in case of an UPDATE/DELETE operation, the constraint MUST set
 an array of fields in involved rows to DEFAULT values, to repair referenced
 table.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.SET_DEFAULT">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="CASCADE"><!-- --></A><H3>
CASCADE</H3>
<PRE>
public static final int <B>CASCADE</B></PRE>
<DL>
<DD>It means that, in case of an UPDATE/DELETE operation, the constraint MUST
 cascade the operation, that is updating/deleting in cascade all involved rows.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#javatools.db.DbConstraint.CASCADE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="table"><!-- --></A><H3>
table</H3>
<PRE>
protected <A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A> <B>table</B></PRE>
<DL>
<DD>The referenced table to check.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="where"><!-- --></A><H3>
where</H3>
<PRE>
protected <A HREF="../../javatools/db/DbExpr.html">DbExpr</A> <B>where</B></PRE>
<DL>
<DD>A DbExpr clause used int DELETE/UPDATE operations.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="selector"><!-- --></A><H3>
selector</H3>
<PRE>
protected <A HREF="../../javatools/db/DbSelector.html">DbSelector</A> <B>selector</B></PRE>
<DL>
<DD>A selector used in INSERT operations.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="intoList"><!-- --></A><H3>
intoList</H3>
<PRE>
protected java.util.List <B>intoList</B></PRE>
<DL>
<DD>A list of columns to put data into (used in INSERT/UPDATE operations).
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="fromList"><!-- --></A><H3>
fromList</H3>
<PRE>
protected java.util.List <B>fromList</B></PRE>
<DL>
<DD>A list of values/expression to put data into (used in INSERT/UPDATE operations).
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="automaticChecking"><!-- --></A><H3>
automaticChecking</H3>
<PRE>
protected boolean <B>automaticChecking</B></PRE>
<DL>
<DD><CODE>true</CODE>: check is done at all times;
 <CODE>false</CODE>: check is performed only with an explicit call to
 <CODE>check</CODE>.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="constraintEmulation"><!-- --></A><H3>
constraintEmulation</H3>
<PRE>
protected boolean <B>constraintEmulation</B></PRE>
<DL>
<DD><CODE>true</CODE>: emulation made as needed;
 <CODE>false</CODE>: emulation is not made.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="currentOperation"><!-- --></A><H3>
currentOperation</H3>
<PRE>
protected int <B>currentOperation</B></PRE>
<DL>
<DD>Represents the current operation. (INSERT, DELETE, UPDATE, UPDATE-CASCADE).
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="canDoUpdate"><!-- --></A><H3>
canDoUpdate</H3>
<PRE>
protected boolean <B>canDoUpdate</B></PRE>
<DL>
<DD><CODE>true</CODE>: update can be done.
 <CODE>false</CODE>: update CANNOT be done.
 It is put to <CODE>false</CODE> whenever the DBMS can perform referencial
 integrity check by itself; e.g. MySQL cannot, so it must be done in a
 "software" way.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="fatherTables"><!-- --></A><H3>
fatherTables</H3>
<PRE>
protected <A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A>[] <B>fatherTables</B></PRE>
<DL>
<DD>It contains all father tables of the one referenced by this constraint.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="sonTables"><!-- --></A><H3>
sonTables</H3>
<PRE>
protected <A HREF="../../javatools/db/DbAbstractTable.html">DbAbstractTable</A>[] <B>sonTables</B></PRE>
<DL>
<DD>It contains all son tables of the one referenced by this constraint.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="updateOperations"><!-- --></A><H3>
updateOperations</H3>
<PRE>
protected java.lang.Integer[] <B>updateOperations</B></PRE>
<DL>
<DD>It contains the update operations for each father table.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="deleteOperations"><!-- --></A><H3>
deleteOperations</H3>
<PRE>
protected java.lang.Integer[] <B>deleteOperations</B></PRE>
<DL>
<DD>It contains the delete operations for each father table.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="fatherTablesColumns"><!-- --></A><H3>
fatherTablesColumns</H3>
<PRE>
protected <A HREF="../../javatools/db/DbColumn.html">DbColumn</A>[][] <B>fatherTablesColumns</B></PRE>
<DL>
<DD>It contains the father keys for each father table.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="refColumns"><!-- --></A><H3>
refColumns</H3>
<PRE>
protected <A HREF="../../javatools/db/DbColumn.html">DbColumn</A>[][] <B>refColumns</B></PRE>
<DL>
<DD>It contains for each father table, the referenced column in contained table.
 That is each element in <CODE>fatherTablesColumns</CODE>, columns of father
 tables, must be equal to each element in <CODE>refColumns</CODE>, columns of
 THIS table.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="fatherColsChildren"><!-- --></A><H3>
fatherColsChildren</H3>
<PRE>
protected <A HREF="../../javatools/db/DbColumn.html">DbColumn</A>[][] <B>fatherColsChildren</B></PRE>
<DL>
<DD>For each son, it contains the referenced column of THIS table. It is built
 automatically, to ease checking.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="refColsChildren"><!-- --></A><H3>
refColsChildren</H3>
<PRE>
protected <A HREF="../../javatools/db/DbColumn.html">DbColumn</A>[][] <B>refColsChildren</B></PRE>
<DL>
<DD>For each son it contains the referenced columns of son tables. It is built
 automatically, to ease checking.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="sonIndexes"><!-- --></A><H3>
sonIndexes</H3>
<PRE>
protected java.lang.Integer[] <B>sonIndexes</B></PRE>
<DL>
<DD>For each son, it contains the position in the <CODE>fatherTables</CODE> of
 the son table itself.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="refs"><!-- --></A><H3>
refs</H3>
<PRE>