Association and ViewLink Object naming
Hi,
Jdev: 11.1.1.6
I have recently upgraded to jdev 11.1.1.6. While creating BC objects, the associations and view links are created with weird names like 'SysC0012692Assoc' -{which actually is a fk between Calendar and CalendarPeriodicities entities} and 'SysC0012692VL' -{Which is a view link over the previously created association) and this is the case with all the associations and view links created.
I never faced this earlier on 11.1.1.5 or 11.1.1.4 versions. Is there any setting under preferences that needs to be turned off to get the regular naming with understandable names. Or am i missing something.
Thanks,
Srikanth.
Edited by: 905147 on May 6, 2012 11:10 AM
Srikanth,
JDeveloper derives default association names by converting the foreign key constraint names to a Java-friendly name and adding the Assoc suffix.
so if the foreign key name in the database is SysC0012692, then the association name will be SysC0012692Assoc.
>
I never faced this earlier on 11.1.1.5 or 11.1.1.4 versions.
>
please re-check the FK name in the database?
are you sure that you did not rename the association after Jdeveloper created it?
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_Data Types and Data Objects_
Programs work with local program data that is, with byte sequences in the working memory. Byte sequences that belong together are called fields and are characterized by a length, an identity (name), and as a further attribute by a data type. All programming languages have a concept that describes how the contents of a field are interpreted according to the data type.
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What is the difference between Type and Like?
Answer1:
TYPE, you assign datatype directly to the data object while declaring.
LIKE,you assign the datatype of another object to the declaring data object. The datatype is referenced indirectly.
Answer2:
Type is a keyword used to refer to a data type whereas Like is a keyword used to copy the existing properties of already existing data object.
Answer3:
type refers the existing data type
like refers the existing data object
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1. PeopleCompanyFkAssoc and PeopleCompanyFkLink >> 0..1 to * Cardinality Between People.PeopleID and People.CompanyID
2. PeopleCompanyFkAssoc1 and PeopleCompanyFkAsoc1Link >> 0..1 to * Cardinality Between Company.CompanyID and People.CompanyID
Problem 2 : 1st Association and VL doesn't make any sense at all !!! If Jdeveloper recongnize relationship correctly between tables on Database diagram and why can't it recongnize correct relationship while creating associations ? This problem is occuring for every table I create in Mysql database.
Also, http://www.oracle.com/technetwork/developer-tools/jdev/mysql-and-bc-howto-082060.html indicates following:
"+ADF BC does not automatically find the primary keys on your MySQL tables. That has two side effects. You'll see some errors when creating and modifying BC objects, and you'll have to define your BC primary keys manually. However, these errors should not affect your project.+"
But when my EO was created, it was already having Primary Key selected for correct attributes.
Anyways, please help in resolving Problem 2 ...Timo,
Thanks for your reply but there is lot of headache, human errors in removing such VO and associations.
Jobinesh,
I am doing exactly what is described in here http://www.oracle.com/technetwork/developer-tools/jdev/mysql-and-bc-howto-082060.html
Expected Behaviour:
1. Create Following Association and VL, which is working fine.
PeopleCompanyFkAssoc1 and PeopleCompanyFkAsoc1Link >> 0..1 to * Cardinality Between Company.CompanyID and People.CompanyID
2. Do NOT Create any other non sense Association and VL, but it is creating
PeopleCompanyFkAssoc and PeopleCompanyFkLink >> 0..1 to * Cardinality Between People.PeopleID and People.CompanyID
What's the relationship between PeopleID and CompanyID ?
Screenshot: http://imageshack.us/g/64/assock.jpg/
Problem 1: I was trying to create table "Table222" I got error as shown in screen shot.
Problem 2: Screen shot of Associations -
Can Any one give me Clear definition of Data type and Data objects.
Concept i know clearly.. but unable to explain it..
Regards,
PrasannaData consists of strings of bytes in the memory area of the program. A string of related bytes is called a field. Each field has an identity (a name) and a data type. All programming languages have a concept that describes how the contents of a field are interpreted according to the data type.
In the ABAP type concept, fields are called data objects. Each data object is an instance of an abstract data type. Data types in ABAP are not just attributes of fields, but can be defined in their own right. There are separate name spaces for data objects and data types. This means that a name can at the same time be the name of a data object as well as the name of a data type.
<b>Data Types:</b>
As well as occurring as attributes of a data object, data types can also be defined independently. The definition of a user-defined data type is based on a set of predefined elementary data types. You can define data types either locally in the declaration part of a program (using the TYPES statement) or globally in the ABAP Dictionary. You can use your own data types to declare data objects or to check the types of parameters in generic operations.
Data types can be divided into elementary, reference, and complex types
<b>Data objects:</b>
Data objects are the physical units with which ABAP statements work at runtime. Each ABAP data object has a set of technical attributes, which are fully defined at all times when an ABAP program is running. The technical attributes of a data object are its length, number of decimal places, and data type. ABAP statements work with the contents of data objects and interpret them according to their data type. You declare data objects either statically in the declaration part of an ABAP program (the most important statement for this is DATA), or dynamically at runtime (for example, when you call procedures). As well as fields in the memory area of the program, the program also treats literals like data objects.
ABAP contains the following kinds of data objects
Literals
Named Data Objects
Predefined Data Objects
Dynamic Data Objects
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