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This patch does the following: - Adds binary datatype support (bytea) - Changes getXXXStream()/setXXXStream() methods to be spec compliant - Adds ability to revert to old behavior Details: Adds support for the binary type bytea. The ResultSet.getBytes() and PreparedStatement.setBytes() methods now work against columns of bytea type. This is a change in behavior from the previous code which assumed the column type was OID and thus a LargeObject. The new behavior is more complient with the JDBC spec as BLOB/CLOB are to be used for LargeObjects and the getBytes()/setBytes() methods are for the databases binary datatype (which is bytea in postgres). Changes the behavior of the getBinaryStream(), getAsciiStream(), getCharacterStream(), getUnicodeStream() and their setXXXStream() counterparts. These methos now work against either the bytea type (BinaryStream) or the text types (AsciiStream, CharacterStream, UnicodeStream). The previous behavior was that these all assumed the underlying column was of type OID and thus a LargeObject. The spec/javadoc for these methods indicate that they are for LONGVARCHAR and LONGVARBINARY datatypes, which are distinct from the BLOB/CLOB datatypes. Given that the bytea and text types support upto 1G, they are the LONGVARBINARY and LONGVARCHAR datatypes in postgres. Added support for turning off the above new functionality. Given that the changes above are not backwardly compatible (however they are more spec complient), I added the ability to revert back to the old behavior. The Connection now takes an optional parameter named 'compatible'. If the value of '7.1' is passed, the driver reverts to the 7.1 behavior. If the parameter is not passed or the value '7.2' is passed the behavior is the new behavior. The mechanism put in place can be used in the future when/if similar needs arise to change behavior. This is patterned after how Oracle does this (i.e. Oracle has a 'compatible' parameter that behaves in a similar manner). Misc fixes. Cleaned up a few things I encountered along the way. Note that in testing the patch I needed to ignore whitespace differences in order to get it to apply cleanly (i.e. patch -l -i byteapatch.diff). Also this patch introduces a new file (src/interfaces/jdbc/org/postgresql/util/PGbytea.java). Barry Lind |
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