Business Components from Any Device

Articles and sample code show how to use Oracle XSQL Servlet to access BC4J components from XML documents. Query the database and manipulate data from any Web-enabled device.
http://otn.oracle.com/sample_code/products/jdev/htdocs/x2vo/x2vohome.html
Regards,
-rh

Hi,
There are many ways to achieve this.
If your requirement is just to read data from different database (and not to update it), then using a database link would be a better approach.
You could create a database link in the primary database (target database being the one you would like to query). Base your sql query for the vo using the db link.
-Arun

Similar Messages

  • NO Links or Associations created with the "Business Components From Tables"

    Hello,
    I have a strange problem. I'm working on a Fusion Web Applicaiton. In the Model project, I try to create some Business Components from Tables with the help of the provided wizard.
    I select one of my IDE Connections, and I choose two of my tables as Entity Objects (*PATIENTS* and COUNTRIES - more details about them bellow), and also as Updatable View Objects. For Read-Only View Objects I select some other tables, afterwards I choose to create a default Application Module, and I press Finish without creating a Business Diagram. Everything works perfectly except of the fact that the wizzard has created everything but the Links and the Associations between my tables.
    To be more precise, COUNTRIES is a simple table, only two columns - ID and NAME, and PATIENTS has some columns like ID, NAME, ADDRESS, DATE_OF_ADMISSION, COUNTRY_ID, where COUNTRY_ID is a foreign key to the COUNTRIES table. Both columns, PATIENTS.COUNTRY_ID and COUNTRIES.ID are NUMBERs. I was expectig the wizard to create a Link and a Association for this foreign key constraint I have between this two tables.
    On the other hand, following one of the tutorials I've found, *"Developing RIA Web Applications with Oracle ADF"*, I've noticed that when I was creating Business Components from Tables based on the HR schema, all the Links and Associations were created as they were expected. I've also tried to create the same Business Components from Tables in my own project, and all the Links and Associations were in place. Somehow, it's not working for my particular schema (the one that contains PATIENTS and COUNTRIES).
    Is there something I do wrong? I've made sure that all the FK constraints are enabled, alive and kicking. From my point of view, the tables are working and behavig as they should, but I can't understand why that feature of automatically creating the Links and Associations works on the HR schema but not on mine.
    Please help!
    Bogdan.
    PS: I am using Oracle JDeveloper Studio Edition Version 11.1.1.1.0, Oracle SQL Developer Version 1.5.5, and Oracle 10g Express Edition installed on localhost.

    Hello John,
    Of course I can post the scripts.
    The schema name is "TEST". But you should know that there are some extra columns in the PATIENTS table, I've not mentioned before. As you can tell from the scripts bellow, the PATIENTS table has the following columns: ID (number), NAME (varchar2), COUNTRY (number), GENDER (number), ADMISSIONDATE (date), DIAGNOSTIC (number), FIRSTNAME (varchar2), SALARY (number). There are actually 3 FK constraints, I've only mentioned one for the simplifying the example. The first FK constraint is towards COUNTRIES, the second one is towards GENDERS, and the final one is towards DIAGNOSTICS. All this 3 tables have only two columns (ID as number, and GENDER as varchar2). I will post the scripts for all.
    Here is the output of the Export DDL to Clipboard from SQL Developer for the COUNTRIES table:
    CREATE TABLE "TEST"."COUNTRIES"
    (     "ID" NUMBER NOT NULL ENABLE,
         "NAME" VARCHAR2(1000 BYTE) NOT NULL ENABLE,
         CONSTRAINT "COUNTRIES_UK1" UNIQUE ("NAME")
    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,
         CONSTRAINT "COUNTRIES_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 UNIQUE INDEX "TEST"."COUNTRIES_PK" ON "TEST"."COUNTRIES" ("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 UNIQUE INDEX "TEST"."COUNTRIES_UK1" ON "TEST"."COUNTRIES" ("NAME")
    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 "TEST"."COUNTRIES_TRG"
    BEFORE INSERT ON COUNTRIES
    FOR EACH ROW
    BEGIN
    SELECT COUNTRIES_SEQ.NEXTVAL INTO :NEW.ID FROM DUAL;
    END;
    ALTER TRIGGER "TEST"."COUNTRIES_TRG" ENABLE;
    Here is the same output for the GENDERS table:
    CREATE TABLE "TEST"."GENDERS"
    (     "ID" NUMBER NOT NULL ENABLE,
         "NAME" VARCHAR2(50 BYTE) NOT NULL ENABLE,
         CONSTRAINT "GENDERS_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,
         CONSTRAINT "GENDERS_UK1" UNIQUE ("NAME")
    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 UNIQUE INDEX "TEST"."GENDERS_PK" ON "TEST"."GENDERS" ("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 UNIQUE INDEX "TEST"."GENDERS_UK1" ON "TEST"."GENDERS" ("NAME")
    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 "TEST"."GENDERS_TRG"
    BEFORE INSERT ON GENDERS
    FOR EACH ROW
    BEGIN
    SELECT GENDERS_SEQ.NEXTVAL INTO :NEW.ID FROM DUAL;
    END;
    ALTER TRIGGER "TEST"."GENDERS_TRG" ENABLE;
    Here is the same output for the DIAGNOSTICS table:
    CREATE TABLE "TEST"."DIAGNOSTICS"
    (     "ID" NUMBER NOT NULL ENABLE,
         "NAME" VARCHAR2(1000 BYTE) NOT NULL ENABLE,
         CONSTRAINT "DIAGNOSTICS_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,
         CONSTRAINT "DIAGNOSTICS_UK1" UNIQUE ("NAME")
    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 UNIQUE INDEX "TEST"."DIAGNOSTICS_PK" ON "TEST"."DIAGNOSTICS" ("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 UNIQUE INDEX "TEST"."DIAGNOSTICS_UK1" ON "TEST"."DIAGNOSTICS" ("NAME")
    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 "TEST"."DIAGNOSTICS_TRG"
    BEFORE INSERT ON DIAGNOSTICS
    FOR EACH ROW
    BEGIN
    SELECT DIAGNOSTICS_SEQ.NEXTVAL INTO :NEW.ID FROM DUAL;
    END;
    ALTER TRIGGER "TEST"."DIAGNOSTICS_TRG" ENABLE;
    And finally, here is the same output for the PATIENTS table:
    CREATE TABLE "TEST"."PATIENTS"
    (     "ID" NUMBER NOT NULL ENABLE,
         "NAME" VARCHAR2(1000 BYTE) NOT NULL ENABLE,
         "COUNTRY" NUMBER,
         "GENDER" NUMBER,
         "ADMISSIONDATE" DATE,
         "DIAGNOSTIC" NUMBER,
         "FIRSTNAME" VARCHAR2(1000 BYTE),
         "SALARY" NUMBER,
         CONSTRAINT "PATIENTS_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,
         CONSTRAINT "PATIENTS_UK1" UNIQUE ("NAME", "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,
         CONSTRAINT "PATIENTS_GENDERS_FK1" FOREIGN KEY ("GENDER")
         REFERENCES "TEST"."GENDERS" ("ID") ENABLE,
         CONSTRAINT "PATIENTS_DIAGNOSTICS_FK1" FOREIGN KEY ("DIAGNOSTIC")
         REFERENCES "TEST"."DIAGNOSTICS" ("ID") ENABLE,
         CONSTRAINT "PATIENTS_COUNTRIES_FK1" FOREIGN KEY ("COUNTRY")
         REFERENCES "TEST"."COUNTRIES" ("ID") 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 "TEST"."PATIENTS_INDEX1" ON "TEST"."PATIENTS" ("NAME")
    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 "TEST"."PATIENTS_PK" ON "TEST"."PATIENTS" ("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 UNIQUE INDEX "TEST"."PATIENTS_UK1" ON "TEST"."PATIENTS" ("NAME", "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 "TEST"."PATIENTS_TRG"
    BEFORE INSERT ON PATIENTS
    FOR EACH ROW
    BEGIN
    SELECT PATIENTS_SEQ.NEXTVAL INTO :NEW.ID FROM DUAL;
    END;
    ALTER TRIGGER "TEST"."PATIENTS_TRG" ENABLE;
    If a complete DB dump would be more helpful, please let me know. I am willing to provide any details.
    Thanks for your support.

  • Integrating ADF Business Components from heterogenous data sources

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  • Business Components from Tables

    Hello to all.
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    -Arun

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