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https://issues.apache.org/jira/browse/DERBY-3676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086074#comment-13086074
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Siddharth Srivastava edited comment on DERBY-3676 at 8/17/11 1:12 AM:
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I too think toString() would be a more intuitive way. As I don' t think an
explicit cast would be preferred by the users and hence wouldn't serve the
purpose of the method.
Moreover, as far as output format is concerned, following is what I would like
to propose(Need reviews on this):
For a statement as follows:
PreparedStatement ps = conn.prepareStatement("INSERT INTO demo(ID,dBlob)
VALUES(?,?)");
ps.setInt(1,1);
ps.setBlob(1,is,BYTES.length);
System.out.println(ps.toString()), currently
outputs:ace4c0a3-0131-d540-4992-0000030d5ec8
New Proposed format: (based on logStatementText)
CacheId:ace4c0a3-0131-d540-4992-0000030d5ec8::INSERT INTO Orders1(ID,dBlob)
VALUES(?,?)::parameter #1: 1::parameter #2:
BLOB(org.apache.derby.iapi.types.RawToBinaryFormatStream@5c2a1ed)
For client PreparedStatement, cacheid can be set as null.
was (Author: siddharthsrivastava):
I too think toString() would be a more intuitive way. As I don' t think an
explicit cast would be preferred by the users and hence wouldn't serve the
purpose of the method.
Moreover, as far as output format is concerned, following is what I would like
to propose(Need reviews on this):
For a statement as follows:
PreparedStatement ps = conn.prepareStatement("INSERT INTO demo(ID,dBlob)
VALUES(?,?)");
ps.setInt(1,1);
ps.setBlob(1,is,BYTES.length);
System.out.println(ps.toString()), currently
outputs:ace4c0a3-0131-d540-4992-0000030d5ec8
New Proposed format: (based on logStatementText)
CacheId:6c44409f-0131-d546-4475-0000030d5ec8::INSERT INTO Orders1(ID,dBlob)
VALUES(?,?)::parameter #1: 1::parameter #2:
BLOB(org.apache.derby.iapi.types.RawToBinaryFormatStream@5c2a1ed)
For client PreparedStatement, cacheid can be set as null.
> Make the toString() method of Derby PreparedStatements print out SQL text
> with ? parameters replaced by the values that have been set so far
> --------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-3676
> URL: https://issues.apache.org/jira/browse/DERBY-3676
> Project: Derby
> Issue Type: Improvement
> Components: JDBC
> Reporter: Rick Hillegas
> Assignee: Siddharth Srivastava
> Attachments: humanstringprepared.txt, humanstringprepared.txt,
> humanstringprepared.txt, humanstringprepared.txt, humanstringprepared.txt,
> humanstringprepared.txt, humanstringprepared.txt, ick.txt, ick.txt,
> prepared.diff, statementCacheVTI.sql
>
>
> This topic came up in the following email thread on the user list:
> http://www.nabble.com/PreparedStatement.toString%28%29---nice-formatting-td17250811.html#a17250811
> Here's what the thread requests:
> "In mysql, a toString() on a PreparedStatement will do this, eg "select x
> from foo where x.a = ?" will become "select x from foo where x.a = 1" with
> the appropriate setValue() call."
> At first blush, this seems like it might be a simple project for a newcomer.
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