org.apache.derby.iapi.sql.depend

Interface Dependent

All Superinterfaces:

Dependable

All Known Subinterfaces:

Activation, CursorActivation, ExecPreparedStatement, PreparedStatement, StorablePreparedStatement

All Known Implementing Classes:

AliasDescriptor, BaseActivation, CheckConstraintDescriptor, ConstantActionActivation, ConstraintDescriptor, CursorActivation, DefaultDescriptor, ForeignKeyConstraintDescriptor, GenericActivationHolder, GenericPreparedStatement, GenericStorablePreparedStatement, KeyConstraintDescriptor, ReferencedKeyConstraintDescriptor, SequenceDescriptor, SPSDescriptor, TableDescriptor, TriggerDescriptor, ViewDescriptor

public interface Dependent
extends Dependable

A dependent has the ability to know whether or not it is valid and to mark itself as valid or invalid. Marking itself as invalid usually means it cannot be used in the system until it is revalidated, but this is in no way enforced by this interface.

Field Summary

Fields inherited from interface org.apache.derby.catalog.Dependable

ACTIVATION, ALIAS, COLUMNS_IN_TABLE, COLUMNS_PERMISSION, CONGLOMERATE, CONSTRAINT, DEFAULT, FILE, HEAP, INDEX, PERM, PREPARED_STATEMENT, ROLE_GRANT, ROUTINE_PERMISSION, SCHEMA, SEQUENCE, STORED_PREPARED_STATEMENT, TABLE, TABLE_PERMISSION, TRIGGER, VIEW

Method Summary

Modifier and Type	Method and Description
boolean	isValid() Check that all of the dependent's dependencies are valid.
void	makeInvalid(int action, LanguageConnectionContext lcc) Mark the dependent as invalid (due to at least one of its dependencies being invalid).
void	prepareToInvalidate(Provider p, int action, LanguageConnectionContext lcc) Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).

Methods inherited from interface org.apache.derby.catalog.Dependable

getClassType, getDependableFinder, getObjectID, getObjectName, isPersistent

Method Detail

isValid

boolean isValid()

Check that all of the dependent's dependencies are valid.

Returns:

true if the dependent is currently valid

prepareToInvalidate

void prepareToInvalidate(Provider p,
                         int action,
                         LanguageConnectionContext lcc)
                  throws StandardException

Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).

Parameters:

action - The action causing the invalidation

p - the provider

lcc - The LanguageConnectionContext

Throws:

StandardException - thrown if unable to make it invalid

makeInvalid

void makeInvalid(int action,
                 LanguageConnectionContext lcc)
          throws StandardException

Mark the dependent as invalid (due to at least one of its dependencies being invalid).

Parameters:

action - The action causing the invalidation

lcc - The LanguageConnectionContext

Throws:

StandardException - thrown if unable to make it invalid