|
1
21 package com.db4o.inside.fieldindex;
22
23 import com.db4o.*;
24 import com.db4o.foundation.*;
25 import com.db4o.inside.btree.*;
26
27 public class FieldIndexProcessorResult {
28
29
30 public static final FieldIndexProcessorResult NO_INDEX_FOUND = new FieldIndexProcessorResult(null);
31
32 public static final FieldIndexProcessorResult FOUND_INDEX_BUT_NO_MATCH = new FieldIndexProcessorResult(null);
33
34 private final IndexedNode _indexedNode;
35
36 public FieldIndexProcessorResult(IndexedNode indexedNode) {
37 _indexedNode = indexedNode;
38 }
39
40 public Tree toQCandidate(QCandidates candidates){
41 return TreeInt.toQCandidate(toTreeInt(), candidates);
42 }
43
44 public TreeInt toTreeInt(){
45 if(foundMatch()){
46 return _indexedNode.toTreeInt();
47 }
48 return null;
49 }
50
51 public boolean foundMatch(){
52 return foundIndex() && ! noMatch();
53 }
54
55 public boolean foundIndex(){
56 return this != NO_INDEX_FOUND;
57 }
58
59 public boolean noMatch(){
60 return this == FOUND_INDEX_BUT_NO_MATCH;
61 }
62
63 public Iterator4 iterateIDs(){
64 return new MappingIterator(_indexedNode.iterator()) {
65 protected Object  map(Object current) {
66 FieldIndexKey composite = (FieldIndexKey)current;
67 return new Integer (composite.parentID());
68 }
69 };
70 }
71
72 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.