code: @Override
     public Sql[] generateSql(final InsertStatement statement, final Database database,
           final SqlGeneratorChain sqlGeneratorChain) {
        for (final Entry<String, Object> entry : statement.getColumnValues().entrySet()) {
           entry.setValue(handleColumnValue(entry.getValue(), database));
        }
        return super.generateSql(statement, database, sqlGeneratorChain);
     }
docs: Find any fields that look like WKT or EWKT and replace them with the database-specific value.