Interface TriggerData


public interface TriggerData
The data passed to an ordinary (insert/update/delete/truncate) trigger function. The SQL 2003 spec. does not stipulate a standard way of mapping triggers to functions. The PLJava mapping use this interface. All functions that are intended to be triggers must be public, static, return void, and take a TriggerData as their argument.
Author:
Thomas Hallgren
  • Method Summary

    Modifier and Type Method Description
    String[] getArguments()
    Returns the arguments for this trigger (as declared in the CREATE TRIGGER statement.
    String getName()
    Returns the name of the trigger (as declared in the CREATE TRIGGER statement).
    ResultSet getNew()
    Returns the ResultSet that represents the new row.
    ResultSet getOld()
    Returns the ResultSet that represents the old row.
    String getSchemaName()
    Returns the name of the schema of the table for which this trigger was created (as declared in the CREATE TRIGGER statement).
    String getTableName()
    Returns the name of the table for which this trigger was created (as declared in the CREATE TRIGGER statement).
    boolean isFiredAfter()
    Returns true if the trigger was fired after the statement or row action that it is associated with.
    boolean isFiredBefore()
    Returns true if the trigger was fired before the statement or row action that it is associated with.
    boolean isFiredByDelete()
    Returns true if this trigger was fired by a DELETE.
    boolean isFiredByInsert()
    Returns true if this trigger was fired by an INSERT.
    boolean isFiredByUpdate()
    Returns true if this trigger was fired by an UPDATE.
    boolean isFiredForEachRow()
    Returns true if this trigger is fired once for each row (as opposed to once for the entire statement).
    boolean isFiredForStatement()
    Returns true if this trigger is fired once for the entire statement (as opposed to once for each row).
    void suppress()
    Advise PostgreSQL to silently suppress the operation on this row.
  • Method Details

    • getNew

      ResultSet getNew() throws SQLException
      Returns the ResultSet that represents the new row. This ResultSet will be null for delete triggers and for triggers that were fired for statement.
      The returned set will be updateable and positioned on a valid row. When the trigger call returns, the trigger manager will see the changes that has been made to this row and construct a new tuple which will become the new or updated row.
      Returns:
      An updateable ResultSet containing one row or null.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • getOld

      ResultSet getOld() throws SQLException
      Returns the ResultSet that represents the old row. This ResultSet will be null for insert triggers and for triggers that were fired for statement.
      The returned set will be read-only and positioned on a valid row.
      Returns:
      A read-only ResultSet containing one row or null.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • getArguments

      String[] getArguments() throws SQLException
      Returns the arguments for this trigger (as declared in the CREATE TRIGGER statement. If the trigger has no arguments, this method will return an array with size 0.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • getName

      String getName() throws SQLException
      Returns the name of the trigger (as declared in the CREATE TRIGGER statement).
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • getTableName

      String getTableName() throws SQLException
      Returns the name of the table for which this trigger was created (as declared in the CREATE TRIGGER statement).
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • getSchemaName

      String getSchemaName() throws SQLException
      Returns the name of the schema of the table for which this trigger was created (as declared in the CREATE TRIGGER statement).
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredAfter

      boolean isFiredAfter() throws SQLException
      Returns true if the trigger was fired after the statement or row action that it is associated with.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredBefore

      boolean isFiredBefore() throws SQLException
      Returns true if the trigger was fired before the statement or row action that it is associated with.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredForEachRow

      boolean isFiredForEachRow() throws SQLException
      Returns true if this trigger is fired once for each row (as opposed to once for the entire statement).
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredForStatement

      boolean isFiredForStatement() throws SQLException
      Returns true if this trigger is fired once for the entire statement (as opposed to once for each row).
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredByDelete

      boolean isFiredByDelete() throws SQLException
      Returns true if this trigger was fired by a DELETE.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredByInsert

      boolean isFiredByInsert() throws SQLException
      Returns true if this trigger was fired by an INSERT.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • isFiredByUpdate

      boolean isFiredByUpdate() throws SQLException
      Returns true if this trigger was fired by an UPDATE.
      Throws:
      SQLException - if the contained native buffer has gone stale.
    • suppress

      void suppress() throws SQLException
      Advise PostgreSQL to silently suppress the operation on this row.
      Throws:
      SQLException - if called in an AFTER or a STATEMENT trigger