PreparedStatement parameter setter¶
The PreparedStatement parameter setter is used by RedG set the column values for the PreparedStatement. It can be used
to convert a custom data type into a type the JDBC driver can understand.
Note
If you are not using PreparedStatements with the insertDataIntoDatabase() method, you can ignore
the PreparedStatement parameter setter and take a look at the
SQL values formatter
Default PreparedStatement parameter setter¶
The DefaultPreparedStatementSetter only calls toString() on the value if the JDBC type is one of
Types.CHAR, Types.VARCHAR, Types.LONGNVARCHAR. Every other value is passed to the statement without modification.
This works for most standard java types and depending on your JDBC driver it might even work for the new Java time types. Consult the documentation of your JDBC driver for more information on supported types.
Java API¶
If you need to implement your own setter, implement the PreparedStatementParameterSetter interface.
Inside of this method you should transform the object if needed. The AttributeMetaInfo provide you with metadata about
the object you are processing. After transforming the object, set it as the parameter on the passed statement.
Caution
Only call statement.set...() with the index parameter specified in parameterIndex. RedG performs no further checks
whether you actually set the right parameter (or any at all).
@FunctionalInterface public interface PreparedStatementParameterSetter { void setParameter(PreparedStatement statement, int parameterIndex, Object object, AttributeMetaInfo attributeMetaInfo, final Connection connection) throws SQLException; }