[
https://issues.apache.org/jira/browse/IBATIS-549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12641192#action_12641192
]
Kai Grabfelder commented on IBATIS-549:
---------------------------------------
Feel free to attach a patch against the current ibatis trunk. Wishes with
attached patches are more likely to be heard by the devs ;-)
> InlineParameterMapParser maintains the character string without the
> necessity by using StringTokenizer.
> ---------------------------------------------------------------------------------------------------------
>
> Key: IBATIS-549
> URL: https://issues.apache.org/jira/browse/IBATIS-549
> Project: iBatis for Java
> Issue Type: Wish
> Components: SQL Maps
> Reporter: Takahiro Kido
> Priority: Minor
>
> To maintain the property value, InlineParameterMapParser uses StringTokenizer.
> StringTokenizer#nextToken uses String#substring(int start, int end).
> String#substring(int start, int end) uses String(int start, int length,
> char[] data).
> ex) INSERT INTO TABLE_A(COL_1,COL_2,....COL_N)
> VALUES(#VALUE_1#,#VALUE_2#,....,#VALUE_N#);
> char[] data keeps "INSERT INTO TABLE_A(COL_1,COL_2,....COL_N)
> VALUES(#VALUE_1#,#VALUE_2#,....,#VALUE_N#)".
> "INSERT INTO TABLE_A(COL_1,COL_2,....COL_N) VALUES("
> This character string need not be maintained.
> When String passed to StringTokenizer is made the character string since '#'
> of the first token,
> it is settled with less amount of the heap use.
> char[] data keeps "#VALUE_1#,#VALUE_2#,....,#VALUE_N#)".
> If the amount of the heap use is valued, you should make a new character
> string since '#' of the first token with StringBuilder or StringBuffer
> beforehand.
> Because a lot of heaps are consumed oppositely when it is tried to make a
> character string new in each token, this attempt is not suitable.
> The effect of reducing the amount of the heap use concerning select and
> insert statement can be chiefly expected.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
