[Hibernate-issues] [Hibernate-JIRA] Created: (HBX-700) Custom type mapping is not possible when reverse-engineering Oracle TIMESTAMP(3) types

[Genandiy D. (JIRA) <no...@at...>]

Custom type mapping is not possible when reverse-engineering Oracle TIMESTAMP(3) types
--------------------------------------------------------------------------------------

         Key: HBX-700
         URL: http://opensource.atlassian.com/projects/hibernate/browse/HBX-700
     Project: Hibernate Tools
        Type: Bug

  Components: reverse-engineer  
 Environment: 3.2 svn, Oracle 10g, Oracle JDBC Driver version - "10.2.0.1.0"
    Reporter: Genandiy Donchyts


When reverse-engineering Oracle database containint column with TIMESTAMP(3) type it is not recognized as a TIMESTAMP and "serializable" type is used instead of timestamp.  This happens because of the bug in Oracle JDBC driver since it returns OTHER (1111) instead of TIMESTAMP(93).

When type-mapping is provided in the form:

<type-mapping>
        <sql-type jdbc-type="TIMESTAMP(3)" hibernate-type="timestamp" />
</type-mapping>

... it is not used because hibernate can't find TIMESTAMP(3) JDBC data type.

JDBCReader.java, processBasicColumns(Table table, ProgressListener progress):
...
//TODO: column.setSqlType(sqlTypeName); //this does not work 'cos the precision/scale/length are not retured in TYPE_NAME
//column.setSqlType(sqlTypeName);
...

it would be nice to have this sqlTypeName set to Column and used during comparison with <type-mapping>, then mapping from "TIMESTAMP(3)" to "timestamp" would work. Currently only 1111 ("OTHER") is passed to Column and as result column does not know anything about "TIMESTAMP(3)"

-----
To reproduce an issue try to create simple Oracle database with one table:

create table test(id TIMESTAMP(3));

and run reverse-engineering task over it.

------

HACK: custom handling of TIMESTAMP(*) types:

Modify JDBCReader.java:

private void processBasicColumns(Table table, ProgressListener progress) { // get the columns
...
				String sqlTypeName = (String) columnRs.get("TYPE_NAME");
				String columnName = (String) columnRs.get("COLUMN_NAME");

				// HACK: custom handling of TIMESTAMP(*)
					if(sqlTypeName.startsWith("TIMESTAMP")) {
					sqlType = java.sql.Types.TIMESTAMP;
				}
...

See also forum post: http://forum.hibernate.org/viewtopic.php?t=961625&start=0&postdays=0&postorder=asc&highlight=



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