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

java.lang.Object
  org.apache.derby.impl.sql.execute.GenericRIChecker
      org.apache.derby.impl.sql.execute.ReferencedKeyRIChecker

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public class ReferencedKeyRIChecker

extends GenericRIChecker

A Referential Integrity checker for a change to a referenced key (primary or unique). Makes sure that all the referenced key row is not referenced by any of its foreign keys. see ForeignKeyRIChecker for the code that validates changes to foreign keys.

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Field Summary

 

Fields inherited from class org.apache.derby.impl.sql.execute.GenericRIChecker

fkDcocis, fkInfo, fkScocis, refDcoci, refScoci, tc

 

Constructor Summary
(package private)	ReferencedKeyRIChecker(org.apache.derby.iapi.store.access.TransactionController tc, FKInfo fkinfo)

 

Method Summary
(package private)  void	doCheck(org.apache.derby.iapi.sql.execute.ExecRow row, boolean restrictCheckOnly)           Check that the row either has a null column(s), or has no corresponding foreign keys.

 

Methods inherited from class org.apache.derby.impl.sql.execute.GenericRIChecker

close, doCheck, getRICheckIsolationLevel, getScanController, isAnyFieldNull

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

ReferencedKeyRIChecker

ReferencedKeyRIChecker(org.apache.derby.iapi.store.access.TransactionController tc,
                       FKInfo fkinfo)
                 throws org.apache.derby.iapi.error.StandardException

Method Detail

doCheck

void doCheck(org.apache.derby.iapi.sql.execute.ExecRow row,
             boolean restrictCheckOnly)
       throws org.apache.derby.iapi.error.StandardException

Check that the row either has a null column(s), or has no corresponding foreign keys.

If a foreign key is found, an exception is thrown. If not, the scan is closed.

Specified by:

doCheck in class GenericRIChecker

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