RFR: 8369432: Add Support for JDBC 4.5 MR [v8]

[Alan Bateman]

On Fri, 17 Oct 2025 22:12:25 GMT, Lance Andersen <lancea at openjdk.org> wrote:

>> This PR adds support for the upcoming JDBC 4.5 MR which provides the following  updates to the JDBC specification:
>> 
>> - Deprecate SQLPermission for removal
>> - Enhance the Blob/Clob/Array/SQLXML/NClob interfaces to extend/support AutoClosable
>> - Add the SQL types DECFLOAT, JSON to Types.Java and JDBCType.java
>> - Add the quoted identifier methods that **were added previously to the Statement interface in JDK 9** to the Connection interface
>>   - It is the exact same verbiage & default methods used when these methods were added to the Statement interface
>> - Clarify the Timestamp::hashCode method which incorrectly indicates that nanos are not used when calculating the hash
>> 
>> Tiers 1-3 have been run
>
> Lance Andersen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Minor wordsmithing based on approved CSR feedback

src/java.sql/share/classes/java/sql/Connection.java line 1722:

> 1720: 
> 1721:     /**
> 1722:      * Returns a SQL identifier. If {@code identifier} is a simple SQL identifier:

"simple SQL identifier" is used in several places, is there anywhere that (at least first) usages could link to see the definition of this?

src/java.sql/share/classes/java/sql/package-info.java line 176:

> 174:  * </UL>
> 175:  *
> 176:  *     <h3>{@code java.sql} and {@code javax.sql} Features Introduced in the JDBC 4.5 API</h3>

The title is consistent with the other updates but I'm wondering why it hasn't been switched to "module java.sql".

src/java.sql/share/classes/java/sql/package-info.java line 347:

> 345:  *
> 346:  * <ul>
> 347:  *   <li><a href="https://jcp.org/en/jsr/detail?id=221">JDBC 4.5 Specification</a>

I realize we continue to maintain the JDBC spec in the JCP but I'm trying to understand why it hasn't been subsumed. It's not really a question for this PR but it's puzzling that we continues to be tracked when it's not a standalone technology and the java.sql module is not upgradable.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27693#discussion_r2442793018
PR Review Comment: https://git.openjdk.org/jdk/pull/27693#discussion_r2442793752
PR Review Comment: https://git.openjdk.org/jdk/pull/27693#discussion_r2442794798