Hi everybody,
In Cayenne 4.1.1 (and probably other versions) when using CLOB's with H2
v2.0.202 an error occurs when attempting to save.
This is due to a change in behaviour in H2 (likely from 1.x) where a CLOB now
needs to be saved as a stream.
In Cayenne, the CharType() has following method which is executed when saving
CLOB for an H2 DB:
public void setJdbcObject(PreparedStatement st, String value, int
pos, int type, int scale) throws Exception {
// if this is a CLOB column, set the value as
"String"
// instead. This should work with most drivers
if (type == Types.CLOB || type == Types.NCLOB) {
st.setString(pos, value);
} else if (scale != -1) {
st.setObject(pos, value, type,
scale);
} else {
st.setObject(pos, value, type);
}
}
As the type is a CLOB, when the st.setString(pos, value) gets executed an
exception is thrown from H2 as you now need to set a stream as follows:
Clob clob = st.getConnection().createClob();
clob.setString(1, val);
st.setClob(pos, clob);
As a fix I'm thinking creating a H2CharType() which overrides the
setJdbcObject() similar to the OracleCharType() to contain this functionality.
I'm happy to submit a PR on GitHub with the solution, please advise?
Kind regards,
Nigel.
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NIGEL HUBAND
TECHNICAL LEAD
AVOKA APAC
Level 2, 1a Rialto Lane, Manly
New South Wales, Australia 2100
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