Postgres SQL Insertion of data and fetching the data

RE: Postgres SQL Insertion of data and fetching the data

Stefan Helzle — Mon, 06 Sep 2021 08:11:21 GMT

I do not have any experience in using UUID fields with Appian.

https://vladmihalcea.com/hibernate-and-uuid-identifiers/

I think you will need to modify the XSD file and add some JPA annotations.

RE: Postgres SQL Insertion of data and fetching the data

harshav — Mon, 06 Sep 2021 06:58:41 GMT

Hi ,

Here are the things which we did.

1. Create a table with UUID column and created a CDT and DSE.

2.Created a Expression RUle and i was able to fetch the data from the table.

3. Created a PM to update the row, where i did try to insert.

Action" set "ActionName"='test', "ActionDescription"='test1', "ActionUId"='006ba1e4-666f-4b88-9e6e-ddaa8890c0e9', "TeamSize"=7 where "ActionId"=4 was aborted: ERROR: column "ActionUId" is of type uuid but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
Position: 74 Call getNextException to see other errors in the batch.: org.postgresql.util.PSQLException: ERROR: column "ActionUId" is of type uuid but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
Position: 74 Data: TypedValue[it=28902,v={4,test,test1,006ba1e4-666f-4b88-9e6e-ddaa8890c0e9,7}]

This is the error which i am getting. My doubt is that with what i need to cast this?

Also one more thing is we have tables where the UUID is the primary of the tables in Postgre where we need to try that as i am not sure how this works.

RE: Postgres SQL Insertion of data and fetching the data

Stefan Helzle — Mon, 06 Sep 2021 05:57:24 GMT

I think we need to divide and conquer.

Please create a simple table with a UUID field, map it to text in the XSD and check whether this works.

Next, there seems to be an issue with your JPA annotations. How did your create the DB schema? How did you create the CDTs? Which JPA annotations do you use?

RE: Postgres SQL Insertion of data and fetching the data

harshav420 — Mon, 06 Sep 2021 05:02:37 GMT

Hi ,

Here are the logs

2021-09-04 16:53:42,950 [ajp-nio-0.0.0.0-8009-exec-7436] ERROR org.hibernate.util.JDBCExceptionReporter - ERROR: relation "Challenge" does not exist
  Position: 311
2021-09-04 16:56:12,964 [ajp-nio-0.0.0.0-8009-exec-7438] ERROR org.hibernate.util.JDBCExceptionReporter - ERROR: relation "Asset" does not exist
  Position: 611


However we do have the tables which are showing as doest not exist. please help.

RE: Postgres SQL Insertion of data and fetching the data

harshav420 — Sat, 04 Sep 2021 13:22:52 GMT

Not really, May be will check on Monday and will let you know , any thoughts in the meantime pls

RE: Postgres SQL Insertion of data and fetching the data

Stefan Helzle — Sat, 04 Sep 2021 10:59:51 GMT

Did you check the logfile tomcat stdout? It might show more details.

RE: Postgres SQL Insertion of data and fetching the data

harshav420 — Sat, 04 Sep 2021 06:11:31 GMT

Yes we did. The entity mapping verified. However when we tried the query entity for this DSE, we were getting unexpected error. The error itself is saying unexpected error.

RE: Postgres SQL Insertion of data and fetching the data

Stefan Helzle — Fri, 03 Sep 2021 13:46:00 GMT

Did you try to map the UUID field to text in the XSD file using JPA annotations?