[hibernate-issues] [Hibernate-JIRA] Updated: (HHH-5957) Provide a way for dialects to override a SqlTypeDescriptor

[Gail Badner (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gail Badner updated HHH-5957:
-----------------------------

    Description: 
Provide a way for dialects to override a SqlTypeDescriptor.

This involves the following API changes:

1) Add to Dialect:

public SqlTypeDescriptor resolveSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)

The default implementation determines if sqlTypeDescriptor is a "standard-basic" SqlTypeDescriptor (see 2)). If it is, then getSqlTypeDescriptorOverride(int sqlCode) is called to get an override. If there is no override, then sqlTypeDescriptor is simply returned,

protected SqlTypeDescriptor getSqlTypeDescriptorOverride(int sqlCode)

2) Add StandardBasicTypes.isStandardBasicSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)

Returns true if sqlTypeDescriptor is defined for any "standard-basic" types registered in StandardBasicTypes

3) Add WrapperOptions.resolveSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor);

4) Add to TypeResolver.resolveSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)

Here are some implementation details.

The final AbstractStandardBasicType.nullSafeGet()/nullSafeSet() methods will resolve the actual SqlTypeDescriptor to use by calling:

WrapperOptions.resolveSqlTypeDescriptor( sqlTypeDescriptor )

The implementation of WrapperOptions.resolveSqlTypeDescriptor( sqlTypeDescriptor ) in AbstractStandardBasicType calls:

TypeResolver.resolveSqlTypeDescriptor( sqlTypeDescriptor )

TypeResolver maintains a map that caches the resolved SqlTypeDescriptors. If it is not found in the cache, it is added from what is returned by:

Dialect.resolveSqlTypeDescriptor( sqlTypeDescriptor )


  was:Provide a way for dialects to override a SqlTypeDescriptor


> Provide a way for dialects to override a SqlTypeDescriptor
> ----------------------------------------------------------
>
>                 Key: HHH-5957
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5957
>             Project: Hibernate Core
>          Issue Type: New Feature
>          Components: core
>            Reporter: Gail Badner
>            Assignee: Gail Badner
>             Fix For: 4.0.0.Alpha1
>
>
> Provide a way for dialects to override a SqlTypeDescriptor.
> This involves the following API changes:
> 1) Add to Dialect:
> public SqlTypeDescriptor resolveSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)
> The default implementation determines if sqlTypeDescriptor is a "standard-basic" SqlTypeDescriptor (see 2)). If it is, then getSqlTypeDescriptorOverride(int sqlCode) is called to get an override. If there is no override, then sqlTypeDescriptor is simply returned,
> protected SqlTypeDescriptor getSqlTypeDescriptorOverride(int sqlCode)
> 2) Add StandardBasicTypes.isStandardBasicSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)
> Returns true if sqlTypeDescriptor is defined for any "standard-basic" types registered in StandardBasicTypes
> 3) Add WrapperOptions.resolveSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor);
> 4) Add to TypeResolver.resolveSqlTypeDescriptor(SqlTypeDescriptor sqlTypeDescriptor)
> Here are some implementation details.
> The final AbstractStandardBasicType.nullSafeGet()/nullSafeSet() methods will resolve the actual SqlTypeDescriptor to use by calling:
> WrapperOptions.resolveSqlTypeDescriptor( sqlTypeDescriptor )
> The implementation of WrapperOptions.resolveSqlTypeDescriptor( sqlTypeDescriptor ) in AbstractStandardBasicType calls:
> TypeResolver.resolveSqlTypeDescriptor( sqlTypeDescriptor )
> TypeResolver maintains a map that caches the resolved SqlTypeDescriptors. If it is not found in the cache, it is added from what is returned by:
> Dialect.resolveSqlTypeDescriptor( sqlTypeDescriptor )

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