public interface Trigger
Modifier and Type | Field and Description |
---|---|
static int |
DELETE_AFTER |
static int |
DELETE_AFTER_ROW |
static int |
DELETE_BEFORE_ROW |
static int |
INSERT_AFTER |
static int |
INSERT_AFTER_ROW |
static int |
INSERT_BEFORE_ROW |
static int |
UPDATE_AFTER |
static int |
UPDATE_AFTER_ROW |
static int |
UPDATE_BEFORE_ROW |
Modifier and Type | Method and Description |
---|---|
void |
fire(int type,
java.lang.String trigName,
java.lang.String tabName,
java.lang.Object[] oldRow,
java.lang.Object[] newRow)
The method invoked upon each triggered action.
|
static final int INSERT_AFTER
static final int DELETE_AFTER
static final int UPDATE_AFTER
static final int INSERT_AFTER_ROW
static final int DELETE_AFTER_ROW
static final int UPDATE_AFTER_ROW
static final int INSERT_BEFORE_ROW
static final int DELETE_BEFORE_ROW
static final int UPDATE_BEFORE_ROW
void fire(int type, java.lang.String trigName, java.lang.String tabName, java.lang.Object[] oldRow, java.lang.Object[] newRow)
type contains the integer index id for trigger type, e.g. TriggerDef.INSERT_AFTER
For all triggers defined as default FOR EACH STATEMENT both oldRow and newRow are null.
For triggers defined as FOR EACH ROW, the following will apply:
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.
For error conditions, users can construct an HsqlException using one of the static methods of org.hsqldb.error.Error with a predefined SQL State from org.hsqldb.error.ErrorCode.
type
- the type as one of the int values defined in the interfacetrigName
- the name of the triggertabName
- the name of the table upon which the triggered action is
occurringoldRow
- the old rownewRow
- the new roworg.hsqldb.HsqlException
- the preferred type of exception thrown by the methodCopyright © 2001 - 2018 HSQL Development Group.