problem with pgjdbc prepared statements and new jsonb exists operator (?) - Mailing list pgsql-jdbc

I'm testing out the new jsonb functionality in Postgresql 9.4 and ran across an issue with some of the newly introduced operators for the jsonb datatype described here (http://www.postgresql.org/docs/9.4/static/functions-json.html#FUNCTIONS-JSONB-OP-TABLE) when used with JDBC prepared statements.

I have created the following table:

create table "JsonTest0" ("id" BIGSERIAL NOT NULL PRIMARY KEY,"json" jsonb DEFAULT ' {"a":"v1","b":2} ' NOT NULL)

When I'm creating and executing a simple statement using the exist operator then I get expected results back:

connection.createStatement.executeQuery("select x2.\"json\" from \"JsonTest0\" x2 where (x2.\"json\" ? 'c') = true")

When I try to execute the same query using a prepared statement, I get the following:

connection.prepareStatement("select x2.\"json\" from \"JsonTest0\" x2 where (x2.\"json\" ? 'c') = true").executeQuery()

So it looks like the ? character, which is used as the jsonb exists operator is confusing the prepared statement parser, which treats it as a parameter substitution instead.

Is this expected behaviour and am I stuck with non-prepared statements when using the new ?, ?& and ?| jsonb operators ?

Any other workarounds, like escaping or function aliases that you may know of ?

I tested with both: 9.3-1100-jdbc41 and 9.4-1200-jdbc41-SNAPSHOT versions

BR,

Peter Mortier