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POJPA Postgres insert Bit(4) with default value
 

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    <p>I've got Postgres DB, Java with JPA 2.0 and eclipseLink.</p> <p>In my To object: </p> <pre><code> @Column(name = "mask") private Boolean mask; </code></pre> <p>IN DB: mask bit(4) DEFAULT B'1000'::"bit",</p> <p>When I want to presist the object:</p> <p>Caused by: org.postgresql.util.PSQLException: ERROR: column "mask" is of type bit but expression is of type boolean Hint: You will need to rewrite or cast the expression.</p> <p>I try in TO class: - Boolean - BitSet(4) - String - Integer - Char</p> <p>With BitSet I try, these: TO object: @Column(name = "mask") private BitSet mask;</p> <pre><code> public BitSet getMask() { BitSet work = new BitSet(4); work.set(0); if (mask == null){ return work; } return mask; } public void setMask(BitSet mask) { BitSet work = new BitSet(4); work.set(0); if (mask== null) { this.mask= work; } else { this.mask= mask; } } </code></pre> <p>How can i make it work? </p> <p>The boolean method is not good, store 1 bit. I search in google, lost of forums.</p> <p>After 5 hour of google search i found that: <a href="http://archives.postgresql.org/pgsql-bugs/2005-05/msg00014.php" rel="nofollow">http://archives.postgresql.org/pgsql-bugs/2005-05/msg00014.php</a></p> <p>Its about a postgres BUG:</p> <p>"Having a JDBC type called "BIT" which actually maps to a single boolean type is very confusing. If you assume that JDBC's BIT has <em>nothing</em> to do with the server type called "bit", and that it's just a coincidence that they have the same name, then things should be clearer."</p>
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