org.h2.samples
Class TriggerSample.MyTrigger

java.lang.Object
  extended by org.h2.samples.TriggerSample.MyTrigger
All Implemented Interfaces:
Trigger
Enclosing class:
TriggerSample

public static class TriggerSample.MyTrigger
extends java.lang.Object
implements Trigger

This class is a simple trigger implementation.


Field Summary
 
Fields inherited from interface org.h2.api.Trigger
DELETE, INSERT, SELECT, UPDATE
 
Constructor Summary
TriggerSample.MyTrigger()
           
 
Method Summary
 void close()
          This method is called when the database is closed.
 void fire(java.sql.Connection conn, java.lang.Object[] oldRow, java.lang.Object[] newRow)
          This method is called for each triggered action.
 void init(java.sql.Connection conn, java.lang.String schemaName, java.lang.String triggerName, java.lang.String tableName, boolean before, int type)
          Initializes the trigger.
 void remove()
          This method is called when the trigger is dropped.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TriggerSample.MyTrigger

public TriggerSample.MyTrigger()
Method Detail

init

public void init(java.sql.Connection conn,
                 java.lang.String schemaName,
                 java.lang.String triggerName,
                 java.lang.String tableName,
                 boolean before,
                 int type)
Initializes the trigger.

Specified by:
init in interface Trigger
Parameters:
conn - a connection to the database
schemaName - the name of the schema
triggerName - the name of the trigger used in the CREATE TRIGGER statement
tableName - the name of the table
before - whether the fire method is called before or after the operation is performed
type - the operation type: INSERT, UPDATE, or DELETE

fire

public void fire(java.sql.Connection conn,
                 java.lang.Object[] oldRow,
                 java.lang.Object[] newRow)
          throws java.sql.SQLException
This method is called for each triggered action.

Specified by:
fire in interface Trigger
Parameters:
conn - a connection to the database
oldRow - the old row, or null if no old row is available (for INSERT)
newRow - the new row, or null if no new row is available (for DELETE)
Throws:
java.sql.SQLException - if the operation must be undone

close

public void close()
Description copied from interface: Trigger
This method is called when the database is closed. If the method throws an exception, it will be logged, but closing the database will continue.

Specified by:
close in interface Trigger

remove

public void remove()
Description copied from interface: Trigger
This method is called when the trigger is dropped.

Specified by:
remove in interface Trigger