Package org.hsqldb
Interface Trigger
- All Known Implementing Classes:
TriggerSample
public interface Trigger
The interface an HSQLDB TRIGGER must implement. The user-supplied class that
implements this must have a default constructor.
- Since:
- 1.7.0
- Author:
- Peter Hudson
-
Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
-
Method Summary
-
Field Details
-
INSERT_AFTER
static final int INSERT_AFTER- See Also:
-
DELETE_AFTER
static final int DELETE_AFTER- See Also:
-
UPDATE_AFTER
static final int UPDATE_AFTER- See Also:
-
INSERT_BEFORE
static final int INSERT_BEFORE- See Also:
-
DELETE_BEFORE
static final int DELETE_BEFORE- See Also:
-
UPDATE_BEFORE
static final int UPDATE_BEFORE- See Also:
-
INSERT_AFTER_ROW
static final int INSERT_AFTER_ROW- See Also:
-
DELETE_AFTER_ROW
static final int DELETE_AFTER_ROW- See Also:
-
UPDATE_AFTER_ROW
static final int UPDATE_AFTER_ROW- See Also:
-
INSERT_BEFORE_ROW
static final int INSERT_BEFORE_ROW- See Also:
-
DELETE_BEFORE_ROW
static final int DELETE_BEFORE_ROW- See Also:
-
UPDATE_BEFORE_ROW
static final int UPDATE_BEFORE_ROW- See Also:
-
-
Method Details
-
fire
The method invoked upon each triggered action.When UPDATE triggers are fired, oldRow contains the existing values of the table row and newRow contains the new values.
For INSERT triggers, oldRow is null and newRow contains the table row to be inserted. For DELETE triggers, newRow is null and oldRow contains the table row to be deleted. type contains the integer index id for trigger type, e.g. TriggerDef.INSERT_AFTER (fredt@users)
- Parameters:
trigName
- the name of the triggertabName
- the name of the table upon which the triggered action is occuringoldRow
- the old rownewRow
- the new row
-