Hi,
I've got a problem with OpenJPA trying to make a join with a constant value. According to the documentation, one can specify a constant value for a join column, so that only records with this value in this column will be joined. The constant value should be specified in the attribute "referencedColumnName" of the @JoinColumn annotation. If the constant is a string then its value should be enclosed first in single quotes and then in double quotes like this: @JoinColumn(name="table.column", referencedColumnName="'value'") However, this declaration fails as I run my application. I debugged it and found out something that looks like a possible bug. The method MappingInfo. mergeJoinColumn() identifies the target of the join as a string constant if its first character is a single quote (as it's described in the docs). However, as this check takes place the value is already enclosed in one extra pair of double quotes (in my example it's " "'value'" ") and the check fails. I tried some different variations for the declaration like escaping the quote sign with backslash or using double quotes, but this all doesn't help. I'm running OpenJPA 2.1.0 under JDK 1.6.0_25 and Windows, the default locale should be German. Is this a bug or maybe can I succeed with a slightly different declaration? As workaround I'll try to use a numeric constant, I hope this will work. Kind regards, Michael Spiro
