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http://opensource.atlassian.com/projects/hibernate/browse/HHH-4732?page=c...
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David Repshas commented on HHH-4732:
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Regarding Steve's comments:
1) RE: usage of instanceOf:
I did use instanceOf TeradataDialect in typeParameters\typeparametertest.java
In my latest updates, using Hibernate 3.5.3, I've been able to remove that change.
It is also used in FooBarTest.java and AstParserLoadingTest.java, but in both of those
cases
it's just added to an existing set of instanceOf checks.
2) Strong's response to this question is accurate. The sql to find the names of the
tables to be dropped needs to be executed before we drop a constraint as this
information is not available after the constraint is dropped.
I agree that this is specific to Teradata and probably won't be used by
others. In looking at the SchemaExport changes, it looks like this can be
changed to use generic dialect methods and not include any reference to TeradataDialect.
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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