Oracle Timesten dialect updates

[carlblan]

Some updates from an Oracle employee to the Oracle TimesTen Community dialect. ( Hibernate 6.6 )

In TimesTenDialect.java

• Adding more datatypes into columnType()
• Added more SQL functions support into initializeFunctionRegistry()
• Updated the custom definition for 'getForUpdateString()'
• Added a custom definition for 'getNativeIdentifierGeneratorStrategy()'
• Added a custom definition for 'currentDate()'
• Added a custom definition for 'currentTime()'
• Added a custom definition for 'getMaxVarcharLength()'
• Added a custom definition for 'getMaxVarbinaryLength()'
• Added a custom definition for 'isEmptyStringTreatedAsNull()'
• Added a custom definition for 'supportsTupleDistinctCounts()'
• Added a custom definition for 'getDual()'
• Added a custom definition for 'getFromDualForSelectOnly()'

In TimesTenSqlAstTranslator.java

• Added a custom definition for 'renderRowsToClause()'

In TimesTenLimitHandler.java

• • The class now extends 'AbstractLimitHandler'
• • Removed a custom definition for 'insert()'
• • Added a custom definition for 'supportsLimit()'
• • Added a custom definition for 'supportsOffset()'
• • Added a custom definition for 'supportsLimitOffset()'
• • Added a custom definition for 'supportsVariableLimit()'
• • Added a custom definition for 'convertToFirstRowValue(int zeroBasedFirstResult)'
• • Added a custom definition for 'useMaxForLimit()'
• • Added a custom definition for 'limitClause(boolean hasFirstRow)'

In TimesTenSequenceSupport.java

• • The Class now implements 'SequenceSupport'
• • Added a custom definition for 'supportsSequences()'
• • Added a custom definition for 'supportsPooledSequences()'
• • Added a custom definition for 'getSelectSequenceNextValString(String sequenceName)'
• • Added a custom definition for 'getSequenceNextValString(String sequenceName)'
• • Added a custom definition for 'getCreateSequenceString(String sequenceName)'
• • Added a custom definition for 'getDropSequenceString(String sequenceName)'

Testing:

• The changes were tested with some local tests we have using this Hibernate 6 TimesTen community dialect.

SPECIAL NOTE:

• 'copyright notices' were added for each change made to the code. As this was suggested by our company lawyers.
  Please review those and let me know If there's a problem with that.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license
and can be relicensed under the terms of the LGPL v2.1 license in the future at the maintainers' discretion.
For more information on licensing, please check here.

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[mbellade]

Hi @carlblan, thank you for the contribution.

• 'copyright notices' were added for each change made to the code. As this was suggested by our company lawyers.
  Please review those and let me know If there's a problem with that.

As @yrodiere mentioned in this other pr #9629 (comment), we now have an AUTHORS.txt file where corporate contributors will be able to add such notices, feel free to check with your colleagues at Oracle (specifically Jean de Lavarene). After that, we would kindly ask you to remove any custom copyright text from the code comments, thanks.

[yrodiere]

Also please note that your contributions cannot, under any circumstance, be licensed under UPL, but must be licensed under ASL2 with the option to relicense under LGPL v2.1, as mentioned in your PR description:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license
and can be relicensed under the terms of the LGPL v2.1 license in the future at the maintainers' discretion.
For more information on licensing, please check here.

And thanks for contributing :)