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Re: How get completed/release time for a task?
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created by <a href="http://community.jboss.org/people/missedone">Nick Tan</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/612246#612246">View the full discussion</a>
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<div class="jive-rendered-content"><p>Thanks, Jose</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>finally, i use jdbc directly since i want to have as less dependency as possible, but obviously the limition is it tightly couple with postgresql driver classes</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"></td><td style=";">/**</td></tr><tr><td style=";"></td><td style=";"> * get the content bytearray with PostgreSQL JDBC driver</td></tr><tr><td style=";"></td><td style=";"> * </td></tr><tr><td style=";"></td><td style=";"> * @param contentId</td></tr><tr><td style=";"></td><td style=";"> * @return the content byte array, or <code>null</code> if not found</td></tr><tr><td style=";"></td><td style=";"><span> * @see </span><a class="jive-link-external-small" href="http://snipplr.com/view/53917/postgres-how-to-read-oid-value-using-jdbc-api/" target="_blank">http://snipplr.com/view/53917/postgres-how-to-read-oid-value-using-jdbc-api/</a></td></tr><tr><td style=";"></td><td style=";"> *  </td><td style=";"><a class="jive-link-external-small" href="http://virgo47.wordpress.com/2008/06/13/jpa-postgresql-and-bytea-vs-oid-type/" target="_blank">http://virgo47.wordpress.com/2008/06/13/jpa-postgresql-and-bytea-vs-oid-type/</a></td></tr><tr><td style=";"></td><td style=";"> */</td></tr><tr><td style=";"></td><td style=";">public byte[] getContentWithPg(long contentId) {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">Connection conn = null;</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">PreparedStatement stmt = null;</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">try {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">conn = getConnection();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">conn.setAutoCommit(false);</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">// Get the Large Object Manager to perform operations with</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">LargeObjectManager lobj = ((org.postgresql.PGConnection) conn).getLargeObjectAPI();</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">stmt = conn.prepareStatement("SELECT content FROM content WHERE id = ?");</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">stmt.setLong(1, contentId);</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">ResultSet rs = stmt.executeQuery();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">if (rs != null) {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">if (rs.next()) {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">// Open the large object for reading</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">long oid = rs.getLong(1);</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">LargeObject obj = lobj.open(oid, LargeObjectManager.READ);</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">// Read the data</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">byte buf[] = new byte[obj.size()];</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">obj.read(buf, 0, obj.size());</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">// Do something with the data read here</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">// Close the object</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">obj.close();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">return buf;</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">rs.close();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">conn.commit();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">catch (Exception e) {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">e.printStackTrace();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">finally {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">try {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">if (conn != null)</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">conn.close();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">if (stmt != null)</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">stmt.close();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">catch (SQLException e) {</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">e.printStackTrace();</td></tr><tr><td style=";"></td><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">}</td></tr><tr><td style=";"></td><td style=";"></td><td style=";">return null;</td></tr><tr><td style=";"></td><td style=";">}</td></tr></tbody></table></div>
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