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https://issues.apache.org/jira/browse/DERBY-2534?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mamta A. Satoor closed DERBY-2534.
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> Add new api "public StringDataValue getValue(RuleBasedCollator)" on
> StringDataValue. This method will return either the base DVDs for char
> datatypes or it will return collation sensitive DVD for char datatypes.
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-2534
> URL: https://issues.apache.org/jira/browse/DERBY-2534
> Project: Derby
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 10.3.0.0
> Reporter: Mamta A. Satoor
> Assigned To: Mamta A. Satoor
> Attachments: DERBY2534_getValue_On_StringDataValue_v1_diff.txt,
> DERBY2534_getValue_On_StringDataValue_v1_stat.txt
>
>
> In Derby 10.3, the collation of char datatypes can be different depending on
> what kind of collation is requested by the user at the database create time
> through the optional JDBC url attribute COLLATION. The collation type
> associated with the DTD will determine which kind of DVD needs to be
> generated. (Note that, irrespective of what collation is used, the format id
> of the char datatypes remain same.) In order to support this behavior of
> generating the base DVD or the collation sensitive DVD for character
> datatypes, we need to add a new api to StringDataValue which will look as
> follows
> /**
> * Gets either SQLChar/SQLVarchar/SQLLongvarchar/SQLClob(base classes)
> or
> *
> CollatorSQLChar/CollatorSQLVarchar/CollatorSQLLongvarch/CollatorSQLClob
> * (subclasses). Whether this method returns the base class or the
> subclass
> * depends on the value of the RuleBasedCollator. If RuleBasedCollator
> is
> * null, then the object returned would be baseclass otherwise it would
> be
> * subcalss.
> */
> public StringDataValue getValue(RuleBasedCollator
> collatorForComparison);
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