Question

Trigger :OLD- and :NEW-record save into a collection of rowtype

Asked by: ExpertsFreakler

Is there any way in an oracle compound trigger to save the bindvariable :OLD or :NEW to a variable of type [table]%ROWTYPE ?
I have also tried to generate dynamic code (EXECUTE IMMEDIATE), but I haven't found any solution that works, because :OLD is only visible in the trigger and not in dynamic sql.
Is it true, that :OLD and :NEW is NOT of type [table]%ROWTYPE?

I want simply do:
myVar := :OLD;

create or replace
TRIGGER 
"THW_TEST_TRG_UPD" FOR UPDATE ON APP_ADMIN.THW_TEST
 
COMPOUND TRIGGER
 
  -- Datentyp für einen Datensatz der Tabelle
  TYPE t_history_tab IS TABLE OF THW_TEST%ROWTYPE; 
  
  -- Deklaration der Variablen
  l_history_tab t_history_tab := t_history_tab();
 
  l_timestamp_von timestamp(9);
  l_timestamp_bis timestamp(9);
  
  l_index SIMPLE_INTEGER := 0;
  
  -- ===============================================================
  -- BEFORE EACH ROW
  -- ===============================================================
  BEFORE EACH ROW IS
  BEGIN
 
    -- Aktuelle Zeitstempel bestimmen
    l_timestamp_von := systimestamp;
    l_timestamp_bis := l_timestamp_von - numtodsinterval(0.000001,'SECOND');
  
    -- Wird der Hauptdatensatz verändert, dann Daten historisieren
    IF (:OLD.ORIG_ID IS NOT NULL) AND (:OLD.ID IS NOT NULL) AND (:OLD.ORIG_ID = :OLD.ID) THEN
    
      -- Zähler inkrementieren und Collection erweitern
      l_history_tab.extend();
      l_index := l_history_tab.LAST;
      
      -- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      -- This I would like to do... (generic solution)
      -- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      -- l_history_tab(l_index) := :OLD;
      -- l_history_tab(l_index).ID               := THW_TEST_SEQ_ID.nextval; 
      -- l_history_tab(l_index).gueltig_bis      := l_timestamp_bis;
      
      -- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      -- instead of... (field by field)
      -- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      l_history_tab(l_index).ID               := THW_TEST_SEQ_ID.nextval; 
      l_history_tab(l_index).orig_id          := :OLD.orig_id;
      l_history_tab(l_index).hapo_id          := :OLD.hapo_id;
      l_history_tab(l_index).benu_id          := :OLD.benu_id;
      l_history_tab(l_index).gueltig_von      := :OLD.gueltig_von;
      l_history_tab(l_index).gueltig_bis      := l_timestamp_bis;
      l_history_tab(l_index).zuletzt_mutiert  := :OLD.zuletzt_mutiert;
      l_history_tab(l_index).data             := :OLD.data;
 
    END IF;
    
    -- Zuletzt mutiert aktualisieren
    :NEW.gueltig_von := l_timestamp_von;
    :NEW.zuletzt_mutiert := l_timestamp_von;
    
  END BEFORE EACH ROW;
 
  -- ===============================================================
  -- AFTER STATEMENT
  -- ===============================================================
  AFTER STATEMENT IS
  BEGIN
  
    -- Wenn es was zu historisieren gibt, dann hier erledigen
    IF (l_history_tab.COUNT() > 0) THEN
 
      -- Alle gespeicherten Records verarbeiten
      FOR i IN l_index..l_history_tab.COUNT()
      LOOP
  
       -- Alten Datensatz einschieben
       INSERT INTO THW_TEST VALUES l_history_tab(l_index);
       
      END LOOP;
    
      l_history_tab.delete();
 
    END IF;
  
  END AFTER STATEMENT;
   
END THW_TEST_TRG_UPD;
                                  
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Asked On
2008-12-15 at 04:50:19ID23984991
Tags

Oracle PL/SQL

Topic

Oracle 11.x Database

Participating Experts
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Points
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Answers

 

by: angelIIIPosted on 2008-12-15 at 22:44:47ID: 23181418

as you found, this is indeed not possible (yet)

 

by: ExpertsFreaklerPosted on 2008-12-15 at 22:52:23ID: 23181436

Here the DDL-Skript:


  CREATE TABLE "APP_ADMIN"."THW_TEST" 
   (	"ID" NUMBER(38,0) NOT NULL ENABLE, 
	"ORIG_ID" NUMBER(38,0) NOT NULL ENABLE, 
	"HAPO_ID" NUMBER(38,0) NOT NULL ENABLE, 
	"BENU_ID" NUMBER(38,0) NOT NULL ENABLE, 
	"ZULETZT_MUTIERT" DATE DEFAULT systimestamp NOT NULL ENABLE, 
	"DATA" VARCHAR2(100 BYTE), 
	"GUELTIG_BIS" TIMESTAMP (9) DEFAULT TO_TIMESTAMP('31.12.9999 23:59:59.999999999', 'DD.MM.YYYY HH24:MI:SS.FF') NOT NULL ENABLE, 
	"GUELTIG_VON" TIMESTAMP (9) DEFAULT systimestamp NOT NULL ENABLE, 
	 CONSTRAINT "THW_TEST_PK" PRIMARY KEY ("ID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS"  ENABLE
   ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
 
  CREATE INDEX "APP_ADMIN"."THW_TEST_IDX_BENU_ID" ON "APP_ADMIN"."THW_TEST" ("BENU_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE INDEX "APP_ADMIN"."THW_TEST_IDX_GUELTIG_BIS" ON "APP_ADMIN"."THW_TEST" ("GUELTIG_BIS") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE INDEX "APP_ADMIN"."THW_TEST_IDX_GUELTIG_VON" ON "APP_ADMIN"."THW_TEST" ("GUELTIG_VON") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE INDEX "APP_ADMIN"."THW_TEST_IDX_HAPO_ID" ON "APP_ADMIN"."THW_TEST" ("HAPO_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE INDEX "APP_ADMIN"."THW_TEST_IDX_ORIG_ID" ON "APP_ADMIN"."THW_TEST" ("ORIG_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE INDEX "APP_ADMIN"."THW_TEST_IDX_ZULETZT_MUTIERT" ON "APP_ADMIN"."THW_TEST" ("ZULETZT_MUTIERT") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE UNIQUE INDEX "APP_ADMIN"."THW_TEST_PK" ON "APP_ADMIN"."THW_TEST" ("ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
  TABLESPACE "USERS" ;
 
 
  CREATE OR REPLACE TRIGGER "APP_ADMIN"."THW_TEST_TRG_INS" 
  BEFORE INSERT ON "THW_TEST"    
 
  FOR EACH ROW
  
  BEGIN
 
    -- Neuer Hauptdatensatz
    IF (:NEW.ORIG_ID IS NULL) THEN
 
      -- Wenn ID noch leer ist, dann automatisch eine neue Sequenz vergeben
      IF (:NEW.ID IS NULL) THEN 
        :NEW.ID := THW_TEST_SEQ_ID.nextval; 
      END IF;
      -- und die Original-ID auf die ID (primary key) setzen
      :NEW.ORIG_ID := :NEW.ID;
 
      -- Wenn die Hapo_ID nicht angegeben wurde, dann diese auf 0 setzen (Dummy Hauptposition)
      IF (:NEW.HAPO_ID IS NULL) THEN 
        :NEW.HAPO_ID := 0;
      END IF;
      
      -- Wenn Die Benu_ID nciht angegeben wurde, dann die Benutzer-ID anhand der Session-Infos bestimmen
      IF (:NEW.BENU_ID IS NULL) THEN  
        :NEW.BENU_ID := APP_BENUTZER.getBenutzerKSW_M(SYS_CONTEXT('USERENV','OS_USER'));
      END IF;
 
    END IF;
 
  END;
 
  
 
 
/
ALTER TRIGGER "APP_ADMIN"."THW_TEST_TRG_INS" ENABLE;
 
 
  CREATE OR REPLACE TRIGGER "APP_ADMIN"."THW_TEST_TRG_DEL" 
FOR DELETE ON APP_ADMIN.THW_TEST
 
COMPOUND TRIGGER
 
  -- Datentyp für einen Datensatz der Tabelle
  TYPE t_history_tab IS TABLE OF THW_TEST%ROWTYPE; 
  
  -- Deklaration der Variablen
  l_history_tab t_history_tab := t_history_tab();
  
  l_index SIMPLE_INTEGER := 0;
  
  -- ===============================================================
  -- BEFORE EACH ROW
  -- ===============================================================
  BEFORE EACH ROW IS
  BEGIN
 
    -- Wenn es sich um den Hauptdatensatz handelt, dann auch noch alle historisierten Datensätze löschen
    IF (:OLD.ID=:OLD.ORIG_ID) THEN
 
      -- Zähler inkrementieren und Collection erweitern
      l_history_tab.extend();
      l_index := l_history_tab.COUNT();
      
      -- Die ID des Hauptdatensatzes zwischenspeichern
      l_history_tab(l_index).id := :old.id;
 
    END IF;
    
  END BEFORE EACH ROW;
  
  -- ===============================================================
  -- AFTER STATEMENT
  -- ===============================================================
  AFTER STATEMENT IS
--  DECLARE 
--   PRAGMA AUTONOMOUS_TRANSACTION;
  BEGIN
  
    -- Wenn es was zu löschen gibt, dann hier erledigen
    IF (l_history_tab.COUNT() > 0) THEN
  
      -- Alle gespeicherten Records verarbeiten
      FOR i IN l_index..l_history_tab.COUNT()
      LOOP
      
        -- Wurde der Hauptdatensatz gelöscht, dann alle dazugehörenden History-Datensätze auch noch löschen
        DELETE THW_TEST WHERE (THW_TEST.ORIG_ID=l_history_tab(l_index).ID);
        
      END LOOP;
 
    END IF;
  
    l_history_tab.delete();
  
  END AFTER STATEMENT;
   
END THW_TEST_TRG_DEL;
 
 
/
ALTER TRIGGER "APP_ADMIN"."THW_TEST_TRG_DEL" ENABLE;
 
 
  CREATE OR REPLACE TRIGGER "APP_ADMIN"."THW_TEST_TRG_UPD" FOR UPDATE ON APP_ADMIN.THW_TEST
 
COMPOUND TRIGGER
 
  -- Datentyp für einen Datensatz der Tabelle
  TYPE t_history_tab IS TABLE OF THW_TEST%ROWTYPE; 
  
  -- Deklaration der Variablen
  l_history_tab t_history_tab := t_history_tab();
 
  l_timestamp_von timestamp(9);
  l_timestamp_bis timestamp(9);
  
  l_index SIMPLE_INTEGER := 0;
  
  -- ===============================================================
  -- BEFORE EACH ROW
  -- ===============================================================
  BEFORE EACH ROW IS
  BEGIN
 
    -- Aktuelle Zeitstempel bestimmen
    l_timestamp_von := systimestamp;
    l_timestamp_bis := l_timestamp_von - numtodsinterval(0.000001,'SECOND');
 
    -- Wird der Hauptdatensatz verändert, dann Daten historisieren
    IF (:OLD.ORIG_ID IS NOT NULL) AND (:OLD.ID IS NOT NULL) AND (:OLD.ORIG_ID = :OLD.ID) THEN
    
      -- Zähler inkrementieren und Collection erweitern
      l_history_tab.extend();
      l_index := l_history_tab.COUNT;
      
      -- Den alten Daten-Zustand mit neuer Sequenz zwischenspeichern 
      l_history_tab(l_index).ID               := THW_TEST_SEQ_ID.nextval; 
      l_history_tab(l_index).orig_id          := :OLD.orig_id;
      l_history_tab(l_index).hapo_id          := :OLD.hapo_id;
      l_history_tab(l_index).benu_id          := :OLD.benu_id;
      l_history_tab(l_index).gueltig_von      := :OLD.gueltig_von;
      l_history_tab(l_index).gueltig_bis      := l_timestamp_bis;
      l_history_tab(l_index).zuletzt_mutiert  := :OLD.zuletzt_mutiert;
 
      l_history_tab(l_index).data             := :OLD.data;
 
    END IF;
    
    -- Zuletzt mutiert aktualisieren
    :NEW.gueltig_von := l_timestamp_von;
    :NEW.zuletzt_mutiert := l_timestamp_von;
    
  END BEFORE EACH ROW;
 
  -- ===============================================================
  -- AFTER STATEMENT
  -- ===============================================================
  AFTER STATEMENT IS
  BEGIN
  
    -- Wenn es was zu historisieren gibt, dann hier erledigen
    IF (l_history_tab.COUNT() > 0) THEN
 
      -- Alle gespeicherten Records verarbeiten
      FOR i IN l_index..l_history_tab.COUNT()
      LOOP
  
       -- Alten Datensatz einschieben
       INSERT INTO THW_TEST VALUES l_history_tab(l_index);
       
      END LOOP;
    
      l_history_tab.delete();
 
    END IF;
  
  END AFTER STATEMENT;
   
END THW_TEST_TRG_UPD;
 
/
ALTER TRIGGER "APP_ADMIN"."THW_TEST_TRG_UPD" ENABLE;
 
                                              
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