Package org.h2gis.utilities.trigger

Class UpdateTrigger

java.lang.Object

org.h2gis.utilities.trigger.UpdateTrigger

All Implemented Interfaces:

org.h2.api.Trigger

public class UpdateTrigger
extends Object
implements org.h2.api.Trigger

This trigger is used to track modifications on tables by inserting notifications into a temporary table. The table H2GIS_SCHEMA.UPDATE_TRIGGERS contain the list of created triggers. The table H2GIS_SCHEMA.UPDATE_NOTIFICATIONS contain the list of updates related to triggers. When this trigger is attached to a table, a line is inserted in H2GIS_SCHEMA.UPDATE_NOTIFICATIONS each time this table is updated.

Author:

Nicolas Fortin

Field Summary

Fields

Modifier and Type	Field	Description
static String	NOTIFICATION_TABLE
static String	TRIGGER_SCHEMA
static String	TRIGGER_TABLE

Fields inherited from interface org.h2.api.Trigger

DELETE, INSERT, SELECT, UPDATE

Constructor Summary

Constructors

Constructor	Description
UpdateTrigger()

Method Summary

Modifier and Type	Method	Description
void	close()
void	fire(Connection conn, Object[] oldRow, Object[] newRow)
void	init(Connection conn, String schemaName, String triggerName, String tableName, boolean before, int type)
void	remove()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TRIGGER_SCHEMA

public static final String TRIGGER_SCHEMA

See Also:

Constant Field Values

TRIGGER_TABLE

public static final String TRIGGER_TABLE

See Also:

Constant Field Values

NOTIFICATION_TABLE

public static final String NOTIFICATION_TABLE

See Also:

Constant Field Values

Constructor Detail

UpdateTrigger

public UpdateTrigger()

Method Detail

close

public void close()
           throws SQLException

Specified by:

close in interface org.h2.api.Trigger

Throws:

SQLException

init

public void init(Connection conn,
                 String schemaName,
                 String triggerName,
                 String tableName,
                 boolean before,
                 int type)
          throws SQLException

Specified by:

init in interface org.h2.api.Trigger

Throws:

SQLException

fire

public void fire(Connection conn,
                 Object[] oldRow,
                 Object[] newRow)
          throws SQLException

Specified by:

fire in interface org.h2.api.Trigger

Throws:

SQLException

remove

public void remove()
            throws SQLException

Specified by:

remove in interface org.h2.api.Trigger

Throws:

SQLException