minor fixes

h2/src/main/org/h2/index/IndexLookupBatch.java

@@ -17,7 +17,7 @@ import org.h2.result.SearchRow;
  * Note that a single instance of {@link IndexLookupBatch} can be reused for multiple 
  * sequential batched lookups.
  * 
- * @see Index#createLookupBatch(TableFilter)
+ * @see Index#createLookupBatch(org.h2.table.TableFilter)
  * @author Sergi Vladykin
  */
 public interface IndexLookupBatch {

h2/src/main/org/h2/table/JoinBatch.java

@@ -323,11 +323,11 @@ public final class JoinBatch {
      * Table filter participating in batched join.
      */
     private static final class JoinFilter {
-        final TableFilter filter;
-        final JoinFilter join;
-        int id;
+        private final TableFilter filter;
+        private final JoinFilter join;
+        private int id;
         
-        IndexLookupBatch lookupBatch;
+        private final IndexLookupBatch lookupBatch;
         
         private JoinFilter(IndexLookupBatch lookupBatch, TableFilter filter, JoinFilter join) {
             this.filter = filter;