Updating the structure of an Entity class

Hi,
I'm a newbie to JPA, trying to learn it by writing my own application. I have defined an entity class with 3 fields, and I've used it to create and populate my database.
Now I wish to add a 4th (optional) field to the original class, but I do not want to lose the data I've already saved in the database. Is there a way of doing this, or a setting somewhere, that will get toplink to do this for me, instead of me having to manually "alter" the database table?
thanks

There is currently no support within TopLink to track versions of your entity classes or compare the existing with the expected schema to be able to alter the database. You will need to do this manually or use a database tool that supports this. I believe Oracle's JDeveloper and SQL Developer both support incremental schema changes.
Doug

Similar Messages

Update the structure

Hi experts,
is it possibele to update the structure instead of updating the database table......

hi,
When you change a domain, for example its data type, all the data elements, structures and tables referring to this domain must be activated again. This activation is automatically triggered when the domain is activated. This ensures that all affected runtime objects are adjusted to the changed type
information.
Changing an ABAP Dictionary object might also affect its dependent objects. Before making a critical
change (such as changing the data type or deleting a field) you should therefore define the set of objects
affected in order to estimate the implications of the planned action.
There is a where-used list for each ABAP Dictionary object with which you can find all the objects that refer to this object. You can call the where-used list from the maintenance transaction of the object.
You can find direct and indirect usages of an ABAP Dictionary object with the where-used list.
You also have to define which usage object types should be included in the search (e.g. all structures and tables
using a data element). You can also search for usages that are not ABAP Dictionary objects (e.g. all programs using a table). The search can also be limited by development class or user namespace.
If an object is probably used by several objects, you should perform the search in the background.
The information about a structure (or table) is distributed in the ABAP Dictionary in domains, data
elements, and the structure definition. The runtime object (nametab) combines this information into a
structure in a form that is optimized for access from ABAP programs. The runtime object is created when
the structure is activated.
The runtime objects of the structures are buffered so that the ABAP runtime system can quickly access
this information.
The runtime object contains information about the overall structure (e.g. number of fields) and the
individual structure fields (field name, position of the field in the structure, data type, length, number of
decimal places, reference field, reference table, check table, conversion routine, etc.).
The runtime object of a table contains further information needed by the database interface for
accessing the table data (client dependence, buffering, key fields, etc.).
Runtime objects are created for all ABAP Dictionary objects that can be used as types in ABAP
programs. These are data elements, table types and views, as well as structures and tables.
Hope this helps, Do reward.

Event Structure: update the structure with a tab control

Hi!
I want to be able to update the code contained within an event structure by a tab control value change, in addition to the usual bool controller in the UI.
The problem is that the event structure don't seem to run when the bool has a value change for the tab control. I have made a short .vi to demonstrate. A counter is placed in the Event structure so it is possible to see if it is running or not.
Any ideas?
Best regards
Is my avatar the dog from the fraggle rock?
Attachments:
forum_question.vi ‏12 KB

Here is a version of your code using a Value Signaling property node.
I "think" it does what you want ...
steve
Help the forum when you get help. Click the "Solution?" icon on the reply that answers your
question. Give "Kudos" to replies that help.
Attachments:
forum_question_mod 2009.vi ‏15 KB

Is it possible to update the data in entity via System.Data.Entity.DbSet entity

If i want to insert a record in dynamically created entity, i can do something like,
System.Data.Entity.DbSet entity = Request.Context.Set(obj.GetType());
Object Updated = entity.Add(obj);
but if i want to update the record in same entity how can i do that? Please help i am new to EF.

Hello Sidra,
>>but if i want to update the record in same entity how can i do that? Please help i am new to EF.
If you use the object type, you need to modify its properties by using reflection because at compile time, the type is not known to compiler:
https://msdn.microsoft.com/en-us/library/axt1ctd9(v=vs.110).aspx
Regards.
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I updated the default task.eddmod edd doc to add new elements to my catalog. How do I have the new element appear on FM application?

After updating the default task.eddmod.edd document, I have:
Created a dtd from the updated edd.
Opened Structure Tools > Structure Application Designer. Selected existing application (dita_1.2_task), selected my updated edd, dtd, and task.template, and saved it.
The new elements I created in the edd appear in my application now.
Do I need to create a dtd and update the structure application designer every time I update my edds?

It looks like you've got two posts with the same question (in the structured forum) .. I'm just replying to this one.
When you update an EDD you must always import that EDD into the associated template. The structured application only references the template, so changing the EDD will have no effect until you import that into the template.
I have no idea how the Structure Application Designer works, so can't speak to that, but I'm sure the fundamental relationship of EDD to template still applies. If your EDD changes affect the model itself (adding/removing elements or attributes), you'll need to modify the associated DTD as well. Keep in mind that you can't just change the DITA DTDs and expect the result to be DITA compliant. There are rules about how to make these changes by "specializing" the model. If you change the model it may work for you in FM, but it may not work when you try to process or edit with other DITA-compliant tools.
One other thing to keep in mind is that if your change is something that you'd expect to be available in other topic types (other than "task"), you'll need to make the same edits to the other topic structure applications.
Cheers,
...scott

Read structure from main program class??

Hi all,
I know that i can read the structures from the main program with (program)structure
But now the structure is in a class or form... How can i do this?
regards

Hi,
I want to use BADI WORKORDER_CONFIRM_CUST_SUBSCR and I have created my own subscreen.
The fields are displayed in the transaction CO11N but the fields are not transfered to the table AFRU where i have created the fields...
And the BADI is already implemented by SAP.. No multiple use possible...
I don't know how the data from the screen can be inserted in the table AFRU without modification.
regards

Accessing entity class field values in a visual JSF page

There is a convenient way to access a session values into a JSF visual page using the following:
String mySessionValue = (String) getValue("#{sessionScope.name}");Like the same, are there any ways to access entity class field values into a visual JSF page? Are there any concepts similar to "entityClassDataProvider" that can be linked to a table component in a visual JSF page?
Thank you.

My question is about (Netbeans visual pack) Java Persistence API and how to display the information from an entity class to a JSF page. But the above mentioned tutorial is about the ordinary visual table presentation.
Thank you.

Update Info Structure S012 - Steps

Hello gurus,
I need your help. I want to update the structure S012 because of some change in the customising were made, but, I want to be sure that the following steps are correct in order to update the data. This is that I want to do:
1.     I am going to the Customizing tree): Logistics - General + Logistics Information System (LIS) + Logistics Data Warehouse + Data Basis + Tools + Setup of Statistical Data + Application-specific Setup of Statistical Data + Perform Setup - Purchasing
2.     Then, I am selection = PURCHIS Statistical Setup (program RMCENEUA, transaction OLI3)
3.     Once I am in the report, this is the data selected:
a.     Info structure to be compile = S012
b.     Save under version = &(1
c.     Document date = 01.01.2011 to 31.05.2011
d.     Name of run = SAP1
e.     Termination date = 12.05.2011
f.     Termination time = 14:00:00
g.     Redeterm. of update group? = u201CXu201D
h.     Update documents? = u201CXu201D
i.     Block all documents? = u201CXu201D
4.     After that, I am checking that the data was created in the table S012, and, yes, it was updated correctly.
5.     Then, I want to copy my version u201C&(1u201D to the version u201C000u201D. I am going to the Customizing tree): Logistics - General + Logistics Information System (LIS) + Logistics Data Warehouse + Data Basis + Tools + Setup of Statistical Data + Application-specific Setup of Statistical Data + Perform Setup u2013 Purchasing + Setup: Copy/Delete Versions.
6.     There, I am selecting the Info structure = S012 and click in the u201CCopy versionu201D button.
7.     In the program, this is the data selected:
a.     Source version = &(1
b.     Target info structure = S012
c.     Target version = 000
But, I want to check if these steps are correct before copy the version. I am confusing with some information from SAP that they are mentioning delete the version 000.
Could you help me, please?
Kind regards
SP

Yes - you generally need to delete the data from the target version before copying the updated data.
An exception is if you are adding missing data (for example you didn't have updating turned on for a particular combination) and your update run has just captured the data for this.
However, if you are changing the data - yes - the target data needs to be deleted. You can copy it to a 3rd version 1st.
Test everything in a QA or sandbox first.

EJBQLException, Entity Class, NetBeansv6, TopLink

Hello I'm new to java and having difficulty with Persistence EntityManager, within persistence.xml I've unselected the 'Include all entity classes' and added the entity class "ImageSpec" to the list provided, and the Entity Class is on the same class path but I still have the following exception. I've researched orm.xml but that looks like it's for deployment scinario's? and not required for development? Any help would be greatly appreciated thank you.
Exception
Caused by: Exception [TOPLINK-8034] (Oracle TopLink Essentials - 2.0 (Build b58g-fcs (09/07/2007))): oracle.toplink.essentials.exceptions.EJBQLException
Exception Description: Error compiling the query [select object(o) from Images o]. Unknown abstract schema type [Images].
        at oracle.toplink.essentials.exceptions.EJBQLException.unknownAbstractSchemaType(EJBQLException.java:494)
Entity Class
package org.comp.app.ds.ajax;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import org.json.JSONArray;
@Entity
@Table(name="Images")
public class ImageSpec implements Serializable {
private Long imgId;
private String imgDescription;
private Long imgFileSize;
private String imgFilePath;
private String imgFileType;
public ImageSpec() { }
public JSONArray toJSON() {
     JSONArray thisJSON = new JSONArray();
     thisJSON.put(this.getImgId());
     thisJSON.put(this.getImgDescription());
     thisJSON.put(this.getImgFileSize());
     thisJSON.put(this.getImgFilePath());
     thisJSON.put(this.getImgFileType());
     return thisJSON;
@Id
public Long getImgId() {
    return imgId;
public String getImgDescription() {
    return imgDescription;
public Long getImgFileSize() {
    return imgFileSize;
public String getImgFilePath() {
    return imgFilePath;
public String getImgFileType() {
    return imgFileType;
public void setImgId(Long imgId) {
    this.imgId = imgId;
public void setImgDescription(String imgDescription) {
    this.imgDescription = imgDescription;
public void setImgFileSize(Long imgFileSize) {
    this.imgFileSize = imgFileSize;
public void setImgFilePath(String imgFilePath) {
    this.imgFilePath = imgFilePath;
public void setImgFileType(String imgFileType) {
    this.imgFileType = imgFileType;
persistence.xml
<persistence-unit name="AppPU" transaction-type="JTA">
    <provider>oracle.toplink.essentials.PersistenceProvider</provider>
    <jta-data-source>jdbc/appDB</jta-data-source>
    <class>org.comp.app.ds.ajax.ImageSpec</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties>
    </properties>
</persistence-unit>

By finding a resource on EJB QL, my Query syntax was wrong. Here's an explanation for anybody with the same problem.
SQL Query Example
SELECT * FROM TableName
EJB QL Example
SELECT OBJECT(i) FROM ImageSpec i
OBJECT = * (+Select All+)
i = A made up identifying character (Rule of thumb: use the first character of Entity Class Name)
ImageSpec = The Entity Class Name (+Not the Database Column Name+)
See the link URL below for more information:
http://edocs.bea.com/workshop/docs81/doc/en/core/index.html
Edited by: Jodda on Feb 22, 2008 7:41 AM - Marked as answered.

Update the database structure from entity Framework Model

Hello !
I'm using VB.net , EF6 with SQL server 2008R2 database.
This is the situation :
I have created the application. Using wizard I have created the Entity model from an existing database.
A client start using this application using this database on his computer.
After some month , I made some modifications on the database and I have updated the model on my application .
Now I have a new .exe file that has the new model from the new database.
I put the new .exe file on the client computer.
Now on his computer : The .exe file has the new database model , but the sql server database has the old structure.
I want to know : Is possible to update the database structure from the entity model on application ?
I want to add a command on application that can make ( if is possible ) this update , so the database become up to date according to entity model ?
Thank you !

Hello,
From your description, it seems that you want to apply a migration for a database first approach, unfortunately, as far as I know, EF Migrations is a product targeted at Code First and doesn't support Database First operations. A workaround I know is to
use update-scripts. If your database structure would be changed frequently, it is recommended to use the Code First approach which would have a better workaround for migrations, for details, you could refer to this
video,
and with the
Entity Framework Power Tools, it is easy to create a code first based project form an existing database.
Regards.
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How to update the field of a Parent enity (field is not visibe on the Form) from a Child Entity in MSCRM 2013

Hi All,
I m new to CRM customization. I have requirement like this..
I have 3 entities.. Entity1 , Entity 2 and Entity3.
Entity1 is the parent of Entity2 and Entity3. Entity2 is the parent of Entity3 and child of Entity1 ..
In Entity1 I have a field eg:product1 which acts as lookup for Entity2 field availableproducts. Now in Entity2 I have a field the quantity of products which acts as lookup for Entity3 as given below.
In Entity3: fields:;; products==Lookup of Products(Entity1)
quantity == Lookup of Quantity (Entity2)
Now from Entity3 I need to update the fields of Entity1 like I have field named Price which is not visible on the Entity3 Form but when I access this field from javascript I m getting null exceptions since the field is not in the context of the Entity
on which it is defined. How can I update the fields of the Parent Entity1 from child Entity3 and also update the quantity field on Entity2 which are not avialable on the Entity3 Form.
Any help is appreciated
Waiting for the reply..
FayazSyed

Hi,
To do it in JS you need to use oData, as wrote above:
to make this requests easer, i use a XrmSvcToolkit library (https://xrmsvctoolkit.codeplex.com/)
Your code will be about this:
/// <reference path="rtb_XrmSvcToolkit.js" />
XrmSvcToolkit.retrieve({
entityName: "Entity1",
id: Xrm.Page.getAttribute("quantity").getValue()[0].id,
select: ["my_FieldNeedToUpdate"], //Here are the name of your fields, which you want to select.
expand: [""],
async: false,
successCallback: function (result) {
FieldNeedToUpdate= result.my_FieldNeedToUpdate;
errorCallback: function (error) {
Error = error;
FieldNeedToUpdate = FieldNeedToUpdate + 1; //Doing some work here
var InputEntity =
my_FieldNeedToUpdate: FieldNeedToUpdate //here are fields, witch you want to update
XrmSvcToolkit.updateRecord({
entityName: "Entity1",
id: Xrm.Page.getAttribute("quantity").getValue()[0].id,
entity: InputEntity ,
async: false
Here are more samples:
https://xrmsvctoolkit.codeplex.com/SourceControl/latest#Samples/XrvSvcToolkit.Samples.updateRecord.js

Set type creation and updation of the structure COMT_PROD_MAT_MAINTAIN_API

Hello Experts,
I've the below scenario,
I created new Org dependent Z set type and assigned to a category.
And I'm using the API - COM_PRODUCT_GETDETAIL_API to get the details about the material via the export parameter ES_MATERIAL_DATA which has the structure of COMT_PROD_MAT_MAINTAIN_API.
My doubt :
Whether the newly created Z set type structure will be automatically updated to this COMT_PROD_MAT_MAINTAIN_API? (In my case it has not happened)
I hope system has to append this structure automatically.
If not how to get this job done. Is there any settings to be done?
If not Whether I can append this structure manually? will it affect anywhere?
Kindly help me on this regard.
Thanks in Advance!
Regards,
Senthil.

Also Senthil,
I am pasting some sample code for your help. this should solve your issue
Also make sure the set type structures are appened in COM PRODUCT MAINTAIN API Structure else the updation logic doesn't work.
DATA:         ls_detail1          TYPE zmsr_detail_maintain,
        gs_set_typ      TYPE comt_prod_mat_maintain_api,
       gt_product_api       TYPE comt_product_maintain_api_tab,
        gs_product_api TYPE comt_product_maintain_api,
        gs_text1        TYPE comt_prlgtext_maintain,
    fill the new comm_product
    gs_product_api-com_product-product_guid = g_product_guid.
    gs_product_api-com_product-product_type = c_product_type.
    gs_product_api-com_product-logsys        = g_logsys.
    gs_product_api-com_product-valid_from    = g_valid_from.
    gs_product_api-com_product-valid_to      = g_valid_to.
    gs_product_api-categories                = gt_categories.
    gs_text1-data-stxh-mandt         = sy-mandt.
    gs_text1-data-stxh-tdobject      = c_product.                            "'PRODUCT'.
    gs_text1-data-stxh-tdid          = c_base.                               "'BASE'.
    gs_text1-data-stxh-tdspras       = c_en.                                 "'EN'.
    ls_line-tdline                   = gs_upload1-lg_text.
    APPEND ls_line TO lt_lines.
    CLEAR ls_line.
    ls_longtxt-lines    = lt_lines.
    gs_text1-data-lines = ls_longtxt-lines.
    APPEND gs_text1 TO gs_product_api-long_texts.
    gs_text-data-langu      = c_en.                                          "'EN'.
    gs_text-data-short_text = gs_upload1-msr_desc.
    gs_text-data-valid_from = g_valid_from.
    gs_text-data-valid_to   = g_valid_to.
    gs_text-data-logsys     = g_logsys.
    APPEND gs_text TO gs_product_api-short_texts.
    CLEAR gs_text.
    APPEND gs_product_api TO gt_product_api.
      ls_detail1-data-zz0010       = gs_upload1-zz0010_1.
      ls_detail1-data-zz0011       = gs_upload1-zz0011_1.
      ls_detail1-data-zz0012       = gs_upload1-zz0012_1.
      ls_detail1-data-zz0013       = gs_upload1-zz0013_1.
      ls_detail1-data-zz0014       = gs_upload1-zz0014_1.
      ls_detail1-data-zz0015       = gs_upload1-zz0015_1.
      ls_detail1-data-zz0016       = gs_upload1-zz0016_1.
      ls_detail1-data-zz0017       = gs_upload1-zz0017_1.
      ls_detail1-data-zz0018       = gs_upload1-zz0018_1.
      ls_detail1-data-zz0019       = gs_upload1-zz0019_1.
      ls_detail1-data-zz0020       = gs_upload1-zz0020_1.
      ls_detail1-data-zz0021       = gs_upload1-zz0021_1.
      ls_detail1-data-zz0022       = gs_upload1-zfil_nbr.
      ls_detail1-data-product_guid = g_product_guid.
      ls_detail1-data-logsys       = g_logsys.
      ls_detail1-data-valid_from   = g_valid_from.
      ls_detail1-data-valid_to     = g_valid_to.
      APPEND ls_detail1 TO gs_set_typ-zmsr_detail.
      CLEAR ls_detail1.
      APPEND gs_set_typ TO gt_set_typ.
      CLEAR gs_set_typ.
      CALL FUNCTION 'IB_CONVERT_INTO_TIMESTAMP'
        EXPORTING
          i_datlo     = sy-datum
          i_timlo     = sy-uzeit
        IMPORTING
          e_timestamp = g_valid_from.
      APPEND gs_set_typ TO gt_set_typ.
      CLEAR gs_set_typ.
*-------Mainten. Functions for Materials
      CALL FUNCTION 'COM_PROD_MATERIAL_MAINTAIN_API'
        EXPORTING
          it_product      = gt_product_api
          it_set          = gt_set_typ
          iv_commit_work = 'X'
          iv_update_task = 'X'
          iv_enqueue_mode = 'E'
        IMPORTING
          et_bapireturn   = gt_bapireturn.
      IF sy-subrc = 0.
      Commit the BAPI
        COMMIT WORK .
        CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
HOpe this helps !!!!!

How to update the PHP Class Service back in Flash Builder 4

I'm not sure if my post title makes any sense or not but let me explain. I've been working on an application in Flash Builder 4 using the ZendFramework and PHP services and everything is work great. the problem I have is after I make changes to my services PHP class (edit php file that has my functions in it), how to I updated those functions in the Flash builder application?
For example, I needed to pass a second object into one of my function in my PHP class and after I edited the file and saved it, I don't see the changes in the Flash builder 4 application. Is there a button I can run to update the PHP class back in Flash Builder?
Thanks,
John Baranowski

How do you use Flash Builder to regenerate the code for the same PHP service I connected to prior? When I first connected to the PHP service Flash Builder automatically built a package with all kinds of actionscript functions in it. I added a function to my PHP Class file server side and I need help on how to update the package back in Flex to see my new function. Can anyone help me??
-John

Any FM / CLASS to change/update the Invoice-VBRK-VBELN?

Hello Experts,
Pls. let me know that is there any FM / CLASS to change/update the existing Invoice-VBRK-VBELN?
BECAUSE my requirement is that I need to update/change the field - VBRK-RFBSK ('Status for transfer to accounting') of an existing Invoice in VBRK table/VF03 Tx in the system.
Thank you

Hi
Why do you need to change VBRK-RFBSK, this field indicates if the bill was trasnferd to the accounting
Max

How to update the MDS Repository with new structure over the older one

Hi,
I am working on the Oracle SOA MDS repository and I want to update the mds repository with new folder structure over the older one but I am not able to do this . I am able to update the mds in local system but not able to do this for remote server.
Please help me
SOA 11g : 11.1.1.5

Welcome to the Apple discussions.
These discussions are user-to-user. Apple generally doesn't monitor the discussions.
My Turkish language skills are non-existant, however, you can use this to find an Apple store close to you: http://www.apple.com/uk/buy/locator/ (you choose your country in the locator) . It may be as easy as returning it to a local store. In some countries you have a short time period to return anything bought from Apple (for example, 14 days in the US). If that doesn't work, you want to contact Apple customer service. Unfortunately, this is where I was unable to maneuver through the Turkish Apple site, due to not knowing the Turkish language.

Updating the structure of an Entity class

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