allows to answer if there is any data at the current provider . i.e. it 's safe to call #getdata if this method returns true . concode_field_sep DataProvider<? extends Comparable<?>,?>[] myProviders concode_field_sep boolean next concode_elem_sep int compare concode_elem_sep void sort concode_elem_sep Pair<K,V> getData concode_elem_sep void advance concode_elem_sep int getSortingKey
boolean function ( ) { for ( DataProvider < ? extends Comparable < ? > , ? > loc0 : myProviders ) { if ( loc0 != null ) { return true ; } } return false ; }