protected StringBuffer whereString(String alias, String[] columnNames, int batchSize) {
if ( columnNames.length==1 ) {
// if not a composite key, use "foo in (?, ?, ?)" for batching
// if no batch, and not a composite key, use "foo = ?"
InFragment in = new InFragment().setColumn( alias, columnNames[0] );
for ( int i=0; i<batchSize; i++ ) in.addValue("?");
return new StringBuffer( in.toFragmentString() );
}
else {
//a composite key
ConditionFragment byId = new ConditionFragment()