Postgres V9.1 issue with LIKE clause and Escape Strings
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Key: OPENJPA-2056
URL: https://issues.apache.org/jira/browse/OPENJPA-2056
Project: OpenJPA
Issue Type: Bug
Components: jdbc
Affects Versions: 2.1.1, 2.0.1, 2.0.0
Environment: Running against a Postgres database at version 9.1
Reporter: Andrew Hastie
Noticed an issue with the Postgres DBDictionary definition after updating
Postgres from version 8.4 to 9.1:-
Here's what you get in the Postgres trace file when executing some JPA driven
queries where an SQL LIKE is involved:-
2011-09-30 14:29:41 BST ERROR: invalid escape string
2011-09-30 14:29:41 BST HINT: Escape string must be empty or one character.
2011-09-30 14:29:41 BST STATEMENT: SELECT t0.id, t0.identificationMask,
t0.productName FROM DBTYPE t0 WHERE (t0.identificationMask LIKE $1 ESCAPE '\\')
2011-09-30 14:29:41 BST ERROR: current transaction is aborted, commands
ignored until end of transaction block
This appears to be down to a change the Postgres project have made to escape
string handling:-
http://www.postgresql.org/docs/9.1/static/release-9-1.html (see section
E.2.2.1)
You appear to be able to override the default DBDictionary setting for this as
follows to get things working again:-
<property name="openjpa.jdbc.DBDictionary"
value="postgres(SearchStringEscape=\)"/>
So, does this mean OpenJPA needs a version dependent dictionary definition for
Postgres from now on? Anybody got any better solutions or care to confirm what
I'm seeing?
I've also posted this to the Postgres JDBC mailing list in case they have any
comments.
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