[#JDBC-354] With UTF8, exceed size limit do not throw same Exception

Jaybird JDBC Driver

With UTF8, exceed size limit do not throw same Exception

Created: 16/May/14 07:59 AM Updated: 16/May/14 03:18 PM

Component/s:

JDBC driver

Affects Version/s:

Jaybird 2.2.4

Fix Version/s:

None

File Attachments:	1. TestEncodingFB.java (4 kB)
Environment:	Windows, UTF8

Description

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Use a preparedStatement with a parameter on a 5 characters column.

When you execute the query (select, update, delete or insert), you don't obtain the same result if the length of the parameter value is over 5 or over 20 :
- Over 5 characters you obtain a FBSQLException
- Over 20 characters you obtain a DataTruncation

If the value contain 11 accented characters, the DataTruncation Exception is thrown.

I have attached a JUnit test case.

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Chouteau Mathieu added a comment - 16/May/14 08:00 AM

JUnit test case

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Chouteau Mathieu added a comment - 16/May/14 08:03 AM

To create the table wich is used by the JUnit test case :

CREATE TABLE TEST
(
  ID integer NOT NULL,
  CODE varchar(5),
  CONSTRAINT CONSTRAINT_NAME PRIMARY KEY (ID)
);

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Mark Rotteveel added a comment - 16/May/14 03:18 PM

The observed behavior is caused by a check that doesn't take the bytes per character into account. It will only throw the DataTruncation exception when the value exceeds the storage length (nr chars * nr of bytes per char) instead of the nr of chars. I am not sure if I am going to fix this in 2.2 as this will probably be significantly rewritten in Jaybird 3.0.