org.apache.openjpa.jdbc.kernel.exps
Interface JDBCAggregateListener

All Superinterfaces:

AggregateListener, Serializable

public interface JDBCAggregateListener
extends AggregateListener

JDBC extension to the AggregateListener.

Author:

Abe White

Method Summary

void	appendTo(SQLBuffer buf, FilterValue[] args, ClassMapping mapping, JDBCStore store) Append the SQL for this aggregate.

Methods inherited from interface org.apache.openjpa.kernel.exps.AggregateListener

evaluate, expectsArguments, getTag, getType

Method Detail

appendTo

void appendTo(SQLBuffer buf,
              FilterValue[] args,
              ClassMapping mapping,
              JDBCStore store)

Append the SQL for this aggregate.

Parameters:

buf - the SQL buffer to append to

args - the values of the arguments given in the filter, or null if this listener doesn't expect arguments

mapping - the class mapping for the query's candidate class

store - the store that owns the query