simplify the generated code for cursored pagination

as suggested by Nathan Rauh

Signed-off-by: Gavin King <[email protected]>

Author: gavinking

tooling/metamodel-generator/src/main/java/org/hibernate/processor/annotation/AbstractQueryMethod.java

@@ -376,22 +376,10 @@ void makeKeyedPage(StringBuilder declaration, List<String> paramTypes) {
 			"\t\t\t\t\t\t.stream()\n" +
 			"\t\t\t\t\t\t.map(_key -> Cursor.forKey(_key.toArray()))\n" +
 			"\t\t\t\t\t\t.collect(toList());\n" +
-			"\t\tvar _next =\n" +
-			"\t\t\t\tPageRequest.of(Entity.class)\n" +
-			//SHOULD NOT have cast to raw Iterable
-			"\t\t\t\t\t\t.sortBy((Iterable) pageRequest.sorts())\n" +
-			"\t\t\t\t\t\t.size(pageRequest.size())\n" +
-			"\t\t\t\t\t\t.page(pageRequest.page() + 1);\n" +
-			"\t\tvar _last =\n" +
-			"\t\t\t\tPageRequest.of(Entity.class)\n" +
-			//SHOULD NOT have cast to raw Iterable
-			"\t\t\t\t\t\t.sortBy((Iterable) pageRequest.sorts())\n" +
-			"\t\t\t\t\t\t.size(pageRequest.size())\n" +
-			"\t\t\t\t\t\t.page(pageRequest.page() - 1);\n" +
 			//SHOULD BE new CursoredPageRecord<>
 			"\t\treturn new CursoredPageRecord(_results.getResultList(), _cursors, _totalResults, pageRequest,\n" +
-			"\t\t\t\t_results.isLastPage() ? null : _next.afterKey(_results.getNextPage().getKey().toArray()),\n" +
-			"\t\t\t\t_results.isFirstPage() ? null : _last.beforeKey(_results.getPreviousPage().getKey().toArray()));";
+			"\t\t\t\t_results.isLastPage() ? null : pageRequest.page(pageRequest.page()+1).afterCursor(_cursors.get(_cursors.size()-1)),\n" +
+			"\t\t\t\t_results.isFirstPage() ? null : pageRequest.page(pageRequest.page()-1).beforeCursor(_cursors.get(0)));";
 
 	static final String MAKE_KEYED_PAGE
 			= "\tvar _unkeyedPage =\n" +