I create REST API application using Spring & JPA using Spring Boot.
I've Employee table which referenced by many tables like Family, ID Card, etc (more than 5 tables) and implement soft delete (set mark_for_delete = true)
I want add validation if employee data still referenced by other table, i want throw exception that said "can not delete employee"
What is the best way to do this validation?
Thanks
You could use a table that stores the number of references that has an Employee.
Anytime you insert or update the Family, ID Card, etc you should update this. To make the validation just verify the number of references is 0.
Doing that way you can add more tables if necessary without change the validation code.
Related
I'm using the Dynamics connector in Azure Data Factory.
TLDR
Does this connector support loading child records which need a parent record key passed in? For example if I want to create a contact and attach it to a parent account, I upsert a record with a null contactid, a valid parentcustomerid GUID and set parentcustomeridtype to 1 (or 2) but I get an error.
Long Story
I'm successfully connecting to Dynamics 365 and extracting data (for example, the lead table) into a SQL Server table
To test that I can transfer data the other way, I am simply loading the data back from the lead table into the lead entity in Dynamics.
I'm getting this error:
Failure happened on 'Sink' side. ErrorCode=DynamicsMissingTargetForMultiTargetLookupField,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=,Source=,''Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=Cannot find the target column for multi-target lookup field: 'ownerid'.
As a test I removed ownerid from the list of source columns it loads OK.
This is obviously a foreign key value.
It raises two questions for me:
Specifically with regards to the error message: If I knew which lookup it needed to use, how can I specify which lookup table it should validate against? There's no settings in the ADF connector to allow me to do this.
This is obviously a foreign key value. If I only had the name (or business key) for this row, how can I easily lookup the foreign key value?
How is this normally done through other API's, i.e. the web API?
Is there an XRMToolbox addin that would help clarify?
I've also read some posts that imply that you can send pre-connected data in an XML document so perhaps that would help also.
EDIT 1
I realised that the lead.ownertypeid field in my source dataset is NULL (that's what was exported). It's also NULL if I browse it in various Xrmtoolbox tools. I tried hard coding it to systemuser (which is what it actually is in the owner table against the actual owner record) but I still get the same error.
I also notice there's a record with the same PK value in systemuser table
So the same record is in two tables, but how do I tell the dynamics connector which one to use? and why does it even care?
EDIT 2
I was getting a similar message for msauto_testdrive for customerid.
I excluded all records with customerid=null, and got the same error.
EDIT 2
This link appears to indicate that I need to set customeridtype to 1 (Account) or 2 (Contact). I did so, but still got the same error.
Also I believe I have the same issue as this guy.
Maybe the ADF connector suffers from the same problem.
At the time of writing, #Arun Vinoth was 100% correct. However shortly afterwards there was a documentation update (in response to a GitHub I raised) that explained how to do it.
I'll document how I did it here.
To populate a contact with against a parent account, you need the parent accounts GUID. Then you prepare a dataset like this:
SELECT
-- a NULL contactid means this is a new record
CAST(NULL as uniqueidentifier) as contactid,
-- the GUID of the parent account
CAST('A7070AE2-D7A6-EA11-A812-000D3A79983B' as uniqueidentifier) parentcustomerid,
-- customer id is an account
'account' [parentcustomerid#EntityReference],
'Joe' as firstname,
'Bloggs' lastname,
Now you can apply the normal automapping approach in ADF.
Now you can select from this dataset and load into contact. You can apply the usual automapping approach, this is: create datasets without schemas. Perform a copy activity without mapping columns
This is the ADF limitation with respect to CDS polymorphic lookups like Customer and Owner. Upvote this ADF idea
Workaround is to use two temporary source lookup fields (owner team and user in case of owner, account and contact in case of customer) and with parallel branch in a MS Flow to solve this issue. Read more, also you can download the Flow sample to use.
First, create two temporary lookup fields on the entity that you wish to import Customer lookup data into it, to both the Account and Contact entities respectively
Within your ADF pipeline flow, you will then need to map the GUID values for your Account and Contact fields to the respective lookup fields created above. The simplest way of doing this is to have two separate columns within your source dataset – one containing Account GUID’s to map and the other, Contact.
Then, finally, you can put together a Microsoft Flow that then performs the appropriate mapping from the temporary fields to the Customer lookup field. First, define the trigger point for when your affected Entity record is created (in this case, Contact) and add on some parallel branches to check for values in either of these two temporary lookup fields
Then, if either of these conditions is hit, set up an Update record task to perform a single field update, as indicated below if the ADF Account Lookup field has data within it
I'm basically trying to create a primary ID between CRM and QuickBooks. Figured I'd just use the existing PK in CRM for the lookup. I'd like the PK to visible to the user, but not editable in CRM.
This has presented several problems in that you can't do that out of the box. I thought I read somewhere you could either via business rule or calculated field, but I haven't had luck with that.
It sounds like it would require web resources if I were to go this route.
The other option would be to just generate unique values for every record in Accounts and Contacts.
Does this automatically populate existing records or just new records? How do I get it to populate existing records?
You can use Auto number manager for configuring an auto-number attribute in every entity. This seeds a number based on configured format for new records. Uniqueness assured by SQL sequence feature & no need of any extra plugin/workflow.
For existing records - you can design a workflow along with a temp entity to assign auto-number. Read more.
Otherwise you can use SSIS + Kingswaysoft package to generate auto-number & assign for existing records.
I am suggesting you to create a new text field on the entity and create a pre plugin that will get the record primary GUID id from context and will set this GUID into the newly added attribute. You can set this field as read-only of form as well.
OR you can generate new GUID as well into the plugin.
Simple parent/child scenario like Order and OrderLineItems. I am inserting a new Order, the OrderID is an identity column (sql server). I'm also inserting OrderLineItems in the same SaveChanges transaction. I need to get the new OrderID into the OrderLineItems, but not sure how to do it. I have the appropriate FK relationships setup properly. When I save, I get an error that OrderID is a required field in OrderLineItems.
Will I have to split this out into 2 server calls? First to insert the Order, which will return the OrderID. And then another to insert the OrderLineItems?
The Breeze documentation discusses this topic (key generation) at several points including but not limited to: http://www.breezejs.com/documentation/save-changes, http://www.breezejs.com/documentation/extending-entities and http://www.breezejs.com/documentation/add-new-entity.
The basic idea idea is that providing that your model and metadata are set up properly, breeze can assign a temporary id in place of the identity column for use in linking your order and orderlineitem entities prior to being saved. As part of the save process, Breeze updates these temporary keys to their "real" key values and updates the local cache as well upon successful completion of the save.
I have two tables that have relationship like
tbl_department whose entities are dept_id and dept_name where dept_id is primary key and next table is tbl_employee whose entities are emp_id, emp_name and dept_id where dept_id is foreign key that references the dept_id of tbl_department. Now, in my jsp page i want to display the format like this:
Emp_id|Emp_name|dept_name.
I am doing above display in JSP page using the JSTL sql tag, and I know it violates the MVC architecture, so, how could I solve this problem i.e. how can I do this relationship mapping it in either Model or Controller in Spring instead in JSP page. Is there any examples or tutorial I can find for this kind of problem
Thank you
First, you have to decide whether it would be worth your while using Hibernate. You should research this yourself to decide whether the rest of your app would benefit from using it (too big a topic to address here).
Assuming you only want to do the use case you have outlined in the question, I'd suggest you use Spring's JDBC support and create a Service (or just a DAO) to perform the SQL that you are currently using in your JSP. I'd create a simple DTO class to hold the Emp_id|Emp_name|dept_name data and populate that in your Service/DAO and then pass it to the JSP via the Controller.
This Spring MVC Example (skeleton) app would be a good place to start, to see how those components are created and wired together.
I want to know how to handle mysql tables created with constraints in joomla.
for a example,
theater_table
id , name, description, image, address, tel, fax ,email
theater_facility_table
id, theater_id, facility_id
facility_table
id, name, description, image
Facility table already filled with data and id is the primary key. When creating a theater I am adding facilities to it. I created facility and theater JTables.
Do I have to create theater_facility JTable too?
Using theater Model class how I insert data to theater_facility table. I know I can insert data after theater stored successfully creating and calling storeTheaterFacility() method where it contains insert query to save required information. But I feel it can't be a good method to do so. Please help me to solve this.
Depending on how you implemented the theater - facility relationship, you can handle insering new data in different parts of your code. I mean, if for example your JTable class (the one that loads theaters) is loading/saving the theater-facilities relationship too, then the same class should delete it.
May be you can take a look at other components (for example, com_content, which relates an article to a category, or K2, where you can have multiple tags related to multiple "items"(articles)), so you can take a look on how do these components handle these kind of relationships.
Another important point you shouldn't forget is to update your facility model / table to delete records from the relationship table upon facility deleting.
I hope it helped!