if (method.isProcedureQuery()) {
return new ProcedureExecution();
} else if (method.isCollectionQuery()) {
return new CollectionExecution();
} else if (method.isSliceQuery()) {
return new SlicedExecution(method.getParameters());
} else if (method.isPageQuery()) {
return new PagedExecution(method.getParameters());
} else if (method.isModifyingQuery()) {
return method.getClearAutomatically() ? new ModifyingExecution(method, em) : new ModifyingExecution(method, null);
} else {