ConstantAction (Apache Derby V10.14 Internals)

All Known Implementing Classes:

AlterConstraintConstantAction, AlterTableConstantAction, ConstraintConstantAction, CreateAliasConstantAction, CreateConstraintConstantAction, CreateIndexConstantAction, CreateRoleConstantAction, CreateSchemaConstantAction, CreateSequenceConstantAction, CreateTableConstantAction, CreateTriggerConstantAction, CreateViewConstantAction, DDLConstantAction, DDLSingleTableConstantAction, DeleteConstantAction, DropAliasConstantAction, DropConstraintConstantAction, DropIndexConstantAction, DropRoleConstantAction, DropSchemaConstantAction, DropSequenceConstantAction, DropStatisticsConstantAction, DropTableConstantAction, DropTriggerConstantAction, DropViewConstantAction, GrantRevokeConstantAction, GrantRoleConstantAction, IndexConstantAction, InsertConstantAction, LockTableConstantAction, MatchingClauseConstantAction, MergeConstantAction, RenameConstantAction, RevokeRoleConstantAction, SavepointConstantAction, SetConstraintsConstantAction, SetRoleConstantAction, SetSchemaConstantAction, SetTransactionIsolationConstantAction, UpdatableVTIConstantAction, UpdateConstantAction, WriteCursorConstantAction
```
public interface ConstantAction
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This interface describes actions that are ALWAYS performed for a Statement at Execution time. For instance, it is used for DDL statements to describe what they should stuff into the catalogs.
An object satisfying this interface is put into the PreparedStatement and run at Execution time. Thus ConstantActions may be shared across threads and must not store connection/thread specific information in any instance field.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`WHEN_MATCHED_THEN_DELETE`	clauseType for WHEN MATCHED ...
`static int`	`WHEN_MATCHED_THEN_UPDATE`	clauseType for WHEN MATCHED ...
`static int`	`WHEN_NOT_MATCHED_THEN_INSERT`	clauseType for WHEN NOT MATCHED ...

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

void executeConstantAction(Activation activation)
Run the ConstantAction.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`executeConstantAction(Activation activation)`	Run the ConstantAction.

- Field Detail
  - WHEN_NOT_MATCHED_THEN_INSERT
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static final int WHEN_NOT_MATCHED_THEN_INSERT
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    clauseType for WHEN NOT MATCHED ... THEN INSERT
    
    See Also:
    
    Constant Field Values
  - WHEN_MATCHED_THEN_UPDATE
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static final int WHEN_MATCHED_THEN_UPDATE
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    clauseType for WHEN MATCHED ... THEN UPDATE
    
    See Also:
    
    Constant Field Values
  - WHEN_MATCHED_THEN_DELETE
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static final int WHEN_MATCHED_THEN_DELETE
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    clauseType for WHEN MATCHED ... THEN DELETE
    
    See Also:
    
    Constant Field Values
- Method Detail
  - executeConstantAction
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void executeConstantAction(Activation activation)
                    throws StandardException
```
    Run the ConstantAction.
    
    Parameters:
    
    activation - The execution environment for this constant action.
    
    Throws:
    
    StandardException - Thrown on failure

Interface ConstantAction

Field Summary

Method Summary

Field Detail

WHEN_NOT_MATCHED_THEN_INSERT

WHEN_MATCHED_THEN_UPDATE

WHEN_MATCHED_THEN_DELETE

Method Detail

executeConstantAction