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http://opensource.atlassian.com/projects/hibernate/browse/HHH-4732?page=c...
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Strong Liu commented on HHH-4732:
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1) those are some of teradata limitation, maybe David can explain more.
2) the thing is that we can't get the real table name that to be dropped without
perform a query ("sel IndexId, ChildTable, IndexName from dbc.RI_Distinct_ChildrenV
where IndexName = '" + constraintName + "'";), see above
David's comment, and I don't think it is a good idea that we get the db connection
in the Configuration
3) yes, it is a teradata specific problem, and i haven't see other db has this
requirement yet. but dont' think we have other choice to support this teradata's
odd behavior :D
Update Teradata Dialect for Teradata 13.0
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Key: HHH-4732
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4732
Project: Hibernate Core
Issue Type: Improvement
Components: core
Affects Versions: 3.3.2
Environment: Hibernate 3.3.2/ Teradata JDBC Driver 13.0, Teradata Database 13.0
Reporter: David Repshas
Assignee: Strong Liu
Attachments: teradata.zip, teradataDiff.zip, testsuiteMods.zip
Would like to update Teradata Dialect to work with Teradata Database 13.0.
I've include the following files with changes as noted:
org.hibernate.dialect.dialect.java
- added include of java.sql.statement
- added code to support the removal of temporary
files created when using referential integrity
The three new methods are:
public boolean supportsDropPreProcess()
public String performDropPreProcess(Statement stmt, String dropSql) throws
SQLException
public void performDropPostProcess(Statement stmt, String dropSql) throws
SQLException
==================================
org.hibernate.dialect.TeradataDialect.java
- added new include files
- modified registerFunction calls for "current_time" and
"current_date"
- put registerKeyword list in alphabetical order and added keywords:
column,map,password,summary, type, value and year
- changed "getAddColumnString()" to return "Add"
- added new methods:
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()
public String extractConstraintName(SQLException sqlex)
public boolean supportsNotNullUnique()
public boolean supportsExpectedLobUsagePattern()
public boolean supportsUnboundedLobLocatorMaterialization()
public boolean supportsDropPreProcess()
public String performDropPreProcess(Statement stmt, String dropSql) throws
SQLException
public void performDropPostProcess(Statement stmt, String dropSql) throws SQLException
==================================
org.hibernate.tool.hbm2ddl.SchemaExport
- added hooks for new methods:
supportsDropPreProcess,performDropPreProcess and performDropPostProcess
==================================
Also made some changes to some of the files in testsuite:
=============================================
test/hql/astParserLoadingTest.java
- Add instance check of TeradataDialect to get correct behavior
=============================================
test/legacy/foobartest.java
- Add instance check of TeradataDialect to get correct behavior
- modified SQL: Teradata requires "<>" rather than "!="
=============================================
test/typeParameters\typeparametertest.java
-needed to disable these tests as Teradata locking was causing
a deadlock situation when they run
=============================================
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