org.apache.derby.impl.sql.execute
Class RISetChecker

java.lang.Object
  org.apache.derby.impl.sql.execute.RISetChecker

public class RISetChecker
extends java.lang.Object

Checks a set or referential integrity constraints. Used to shield the caller from ReferencedKeyRIChecker and ForeignKeyRICheckers.

Field Summary

private GenericRIChecker[]

checkers

Constructor Summary

RISetChecker(TransactionController tc, FKInfo[] fkInfo)

Method Summary

void	close() clean up
void	doFKCheck(ExecRow row) Check that everything in the row is ok, i.e.
void	doPKCheck(ExecRow row, boolean restrictCheckOnly) Check that there are no referenced primary keys in the passed in row.
void	doRICheck(int index, ExecRow row, boolean restrictCheckOnly) Execute the specific RI check on the passed in row.
(package private) void	reopen() Do any work needed to reopen our ri checkers for another round of checks.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

checkers

private GenericRIChecker[] checkers

Constructor Detail

RISetChecker

public RISetChecker(TransactionController tc,
                    FKInfo[] fkInfo)
             throws StandardException

Parameters:

tc - the xact controller

fkInfo - the foreign key information

Throws:

StandardException - Thrown on failure

Method Detail

reopen

void reopen()
      throws StandardException

Do any work needed to reopen our ri checkers for another round of checks. Must do a close() first.

Throws:

StandardException - on error

doPKCheck

public void doPKCheck(ExecRow row,
                      boolean restrictCheckOnly)
               throws StandardException

Check that there are no referenced primary keys in the passed in row. So for each foreign key that references a primary key constraint, make sure that there is no row that matches the values in the passed in row.

Parameters:

row - the row to check

Throws:

StandardException - on unexpected error, or on a primary/unique key violation

doFKCheck

public void doFKCheck(ExecRow row)
               throws StandardException

Check that everything in the row is ok, i.e. that there are no foreign keys in the passed in row that have invalid values.

Parameters:

row - the row to check

Throws:

StandardException - on unexpected error, or on a primary/unique key violation

doRICheck

public void doRICheck(int index,
                      ExecRow row,
                      boolean restrictCheckOnly)
               throws StandardException

Execute the specific RI check on the passed in row.

Parameters:

index - index into fkInfo

row - the row to check

Throws:

StandardException - on unexpected error, or on a primary/unique key violation

close

public void close()
           throws StandardException

clean up

Throws:

StandardException - on error