Dependent (Apache Derby V10.14 Internals)

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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.

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

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

- 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

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Built on Wed 2018-05-16 16:01:03+0000, from revision ???

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Apache Derby V10.14 Internals - Copyright © 2004,2018 The Apache Software Foundation. All Rights Reserved.