내가 (http://libspatialindex.github.com/) 라이브러리 spatialindex와 함께 R 트리를 벌크로드하고 함께 :는 (재) 넣기 R 트리 spatialindex 라이브러리
는string baseName = "streets";
size_t capacity = 10 * 1024 * 1024;
bool bWriteThrough = false;
indexIdentifier = 0;
IStorageManager *disk = StorageManager::createNewDiskStorageManager(baseName, 512);
fileInMem = StorageManager
::createNewRandomEvictionsBuffer(*disk, capacity, bWriteThrough);
// bulkLoads my tree
bulkLoadRTree();
cout << "tree info:" << endl;
cout << *tree << endl;
delete disk;
다음에 대한 정보의 출력 내장 트리 : 지금
Dimension: 2
Fill factor: 0.7
Index capacity: 100
Leaf capacity: 100
Tight MBRs: enabled
Near minimum overlap factor: 32
Reinsert factor: 0.3
Split distribution factor: 0.4
Utilization: 69%
Reads: 1
Writes: 35980
Hits: 0
Misses: 0
Tree height: 4
Number of data: 2482376
Number of nodes: 35979
Level 0 pages: 35463
Level 1 pages: 507
Level 2 pages: 8
Level 3 pages: 1
Splits: 0
Adjustments: 0
Query results: 0
내가 디스크에 저장 한 내용을로드하려고 :
IStorageManager *ldisk = StorageManager::loadDiskStorageManager(baseName);
SpatialIndex::StorageManager::IBuffer* fileLoadBuffer = StorageManager
::createNewRandomEvictionsBuffer(*ldisk, capacity, bWriteThrough);
id_type id = 1;
tree = RTree::loadRTree(*fileLoadBuffer, id);
cout << *tree << endl;
과 나무가있다 단 하나의 노드 (트리의 출력은 :)
Dimension: 2
Fill factor: 0.7
Index capacity: 100
Leaf capacity: 100
Tight MBRs: enabled
Near minimum overlap factor: 32
Reinsert factor: 0.3
Split distribution factor: 0.4
Utilization: 0%
Reads: 0
Writes: 0
Hits: 0
Misses: 0
Tree height: 1
Number of data: 0
Number of nodes: 1
Level 0 pages: 1
Splits: 0
Adjustments: 0
Query results: 0
내가 뭘 잘못 했니? 디스크에서 전체 트리를로드하지 않는 이유는 무엇입니까?
변경 사항을 디스크에 동기화하려면 개체를 삭제해야합니다. – arthur