Java Doc for Trigger.java in  » Database-DBMS » hsql » org » hsqldb » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » hsql » org.hsqldb 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.hsqldb.Trigger

All known Subclasses:   org.hsqldb.test.TestSchemaParse,  org.hsqldb.sample.TriggerSample,
Trigger
public interface Trigger (Code)
The interface an HSQLDB TRIGGER must implement. The user-supplied class that implements this must have a default constructor.
author:
   Peter Hudson
version:
   1.7.2
since:
   1.7.0


Field Summary
 intDELETE_AFTER
    
 intDELETE_AFTER_ROW
    
 intDELETE_BEFORE
    
 intDELETE_BEFORE_ROW
    
 intINSERT_AFTER
    
 intINSERT_AFTER_ROW
    
 intINSERT_BEFORE
    
 intINSERT_BEFORE_ROW
    
 intUPDATE_AFTER
    
 intUPDATE_AFTER_ROW
    
 intUPDATE_BEFORE
    
 intUPDATE_BEFORE_ROW
    


Method Summary
 voidfire(int type, String trigName, String tabName, Object[] oldRow, Object[] newRow)
     The method invoked upon each triggered action.

Field Detail
DELETE_AFTER
int DELETE_AFTER(Code)



DELETE_AFTER_ROW
int DELETE_AFTER_ROW(Code)



DELETE_BEFORE
int DELETE_BEFORE(Code)



DELETE_BEFORE_ROW
int DELETE_BEFORE_ROW(Code)



INSERT_AFTER
int INSERT_AFTER(Code)



INSERT_AFTER_ROW
int INSERT_AFTER_ROW(Code)



INSERT_BEFORE
int INSERT_BEFORE(Code)



INSERT_BEFORE_ROW
int INSERT_BEFORE_ROW(Code)



UPDATE_AFTER
int UPDATE_AFTER(Code)



UPDATE_AFTER_ROW
int UPDATE_AFTER_ROW(Code)



UPDATE_BEFORE
int UPDATE_BEFORE(Code)



UPDATE_BEFORE_ROW
int UPDATE_BEFORE_ROW(Code)





Method Detail
fire
void fire(int type, String trigName, String tabName, Object[] oldRow, Object[] newRow)(Code)
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 trigger
Parameters:
  tabName - the name of the table upon which thetriggered action is occuring
Parameters:
  oldRow - the old row
Parameters:
  newRow - the new row




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