I am sure there are people there that can help you with this.
Regards, Fernando
Aleksey wrote:
Hello,
I have the following problem working with DatabaseMetaData. There is a database with table and attribute names in Russian. Database cluster was initialized with appropriate ru_RU.KOI8-R locale. All the databases were created with KOI8-R encoding. No problems were encountered in accessing database table data with JDBC.
Database has foreign key constraints that I try to get with DatabaseMetaData methods. Both getTables and getPrimaryKeys work fine, all the results have correct encoding and values.
The following fragment of code causes exception:
rs = meta.getImportedKeys(null,null,tableName); while(rs.next()) {
String pkTable = rs1.getString("PKTABLE_NAME"); String pkColumn = rs1.getString("PKCOLUMN_NAME"); /* here */
String fkTable = rs1.getString("FKTABLE_NAME"); String fkColumn = rs1.getString("FKCOLUMN_NAME"); /* and here */
}
PKTABLE_NAME and FKTABLE_NAME fields are fetched correctly. Both the marked lines produce exception with this stack trace:
at org.postgresql.core.Encoding.decodeUTF8(Encoding.java:270)
at org.postgresql.core.Encoding.decode(Encoding.java:165)
at org.postgresql.core.Encoding.decode(Encoding.java:181)
at org.postgresql.jdbc1.AbstractJdbc1ResultSet.getString(AbstractJdbc1ResultSet.java:97)
at org.postgresql.jdbc1.AbstractJdbc1ResultSet.getString(AbstractJdbc1ResultSet.java:337)
Error message is: "Invalid character data was found. This is most likely caused by stored data containing characters that are invalid for the character set the database was created in. The most common example of this is storing 8bit data in a SQL_ASCII database.",
but database is not SQL_ASCII (actually KOI8-R) and all the characters in column names are taken from this codepage. Other DatabaseMetaData methods work with these characters fine.
I tested the same methods with the same database but with tables with latin names - everything worked fine, but renaming all the columns will cause a huge amount of extra work with database and applications.
I use PostgreSQL-7.3.4 compiled from source, JDBC driver from http://jdbc.postgresql.org/download/pg73jdbc3.jar on Linux, J2SDK 1.4.1_02.
I will appreciate any help with this.
Thank you.
Sincerely yours, Aleksey.
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