protected boolean evaluate4Instance ( ) throws EFapsException { boolean ret = true ; if ( ! isSearchMode ( ) ) { final List < Return > returns = this . getCommand ( ) . executeEvents ( EventType . UI_TABLE_EVALUATE , ParameterValues . INSTANCE , getInstance ( ) , ParameterValues . PARAMETERS , Context . getThreadContext ( ) . getParameters ( ) , ParameterValues . CLASS , this ) ; for ( final Return retu : returns ) { if ( retu . contains ( ReturnValues . INSTANCE ) ) { final Object object = retu . get ( ReturnValues . INSTANCE ) ; if ( object != null && object instanceof Instance && ( ( Instance ) object ) . isValid ( ) ) { setInstanceKey ( ( ( Instance ) object ) . getOid ( ) ) ; } else { UIForm . LOG . error ( "The esjp called by Command '{}' must return a valid instance" , this . getCommand ( ) . getName ( ) ) ; } } else { ret = false ; } } } return ret ; }
This is a possibility to replace the current Instance for the form with another one using an table evaluate esjp .