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Here is a patch for DatabaseMetaData to show precision properly. It is 

from Mark Lillywhite.  I am adding to the patch queue.
This commit is contained in:
Bruce Momjian 2001-10-24 17:44:28 +00:00
parent 0450331526
commit cabe9896bc
1 changed files with 13 additions and 2 deletions
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15
src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java
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@ -13,7 +13,7 @@ import org.postgresql.util.PSQLException;
/**
* This class provides information about the database as a whole.
*
* $Id: DatabaseMetaData.java,v 1.38 2001/10/24 04:31:50 barry Exp $
* $Id: DatabaseMetaData.java,v 1.39 2001/10/24 17:44:28 momjian Exp $
*
* <p>Many of the methods here return lists of information in ResultSets. You
* can use the normal ResultSet methods such as getString and getInt to
@ -1999,7 +1999,18 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
}
tuple[7] = null; // Buffer length
tuple[8] = "0".getBytes(); // Decimal Digits - how to get this?
// Decimal digits = scale
// From the source (see e.g. backend/utils/adt/numeric.c,
// function numeric()) the scale and precision can be calculated
// from the typmod value. mark@plasticsoftware.com.au
if (typname.equals("numeric") || typname.equals("decimal"))
{
int attypmod = r.getInt(8);
tuple[8] =
Integer.toString((attypmod & 0xffff) - VARHDRSZ).getBytes();
}
else
tuple[8] = "0".getBytes();
tuple[9] = "10".getBytes(); // Num Prec Radix - assume decimal
tuple[10] = Integer.toString(nullFlag.equals("f") ?
java.sql.DatabaseMetaData.columnNullable :