Package org.apache.derby.iapi.sql.depend
Interface Dependent
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- 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.
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Field Summary
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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
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method 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
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Method Detail
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isValid
boolean isValid()
Check that all of the dependent's dependencies are valid.- Returns:
- true if the dependent is currently valid
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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 invalidationp
- the providerlcc
- The LanguageConnectionContext- Throws:
StandardException
- thrown if unable to make it invalid
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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 invalidationlcc
- The LanguageConnectionContext- Throws:
StandardException
- thrown if unable to make it invalid
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