Create CLOB from long string using JDBC

Question

I have the following query:

select id from table1 where some_func(?) = 1;

where some_func is a function which allows its argum

Answer 1

The CLOB could be created in a simple manner:

if(obj instanceof String && ((String) obj).length() >= 4000) {
    Clob clob = connection.createClob();
    clob.setString(1, (String) obj);
    stmt.setClob(i+1, clob);
}

Then these clobs should be freed of course.

Answer 2

From my experience setCharacterStream() is much more reliable than setClob()

String s = (String) obj;
StringReader stringReader = new StringReader(s);
stmt.setCharacterStream(i + 1, stringReader , s.length());

and it works without the need to create CLOB objects