删除 appengine blobstore 中的孤立 blob

发布于 2024-10-24 00:56:30 字数 851 浏览 3 评论 0原文

我从数据存储中删除了大量我不删除的对象需要（大约 7000 个）。每个对象都有一个与其关联的 blob，由字符串（blob 键）。

正如您现在可能已经猜到的那样，我忘记删除这些斑点。现在我对它们没有任何参考，但我想删除它们。我似乎找不到办法做到这一点。任何帮助将不胜感激。

更新找到了解决方案。

DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
List<BlobInfo> blobsToCheck = new LinkedList<BlobInfo>(); 
Iterator<BlobInfo> iterator = null;
if(afterBlobKey == null){
    iterator = new BlobInfoFactory().queryBlobInfos();
}else{
    iterator = new BlobInfoFactory().queryBlobInfosAfter(new BlobKey(afterBlobKey));
}

while(iterator.hasNext()){

    blobsToCheck.add(iterator.next());

}

//Check those blobs if they have reference in datastore
//Delete using blobstoreService.delete(blobKey);

原文

I deleted a large number of objects from the datastore that I din't
require (around 7000 of them).
Each of those objects had a blob associated with it, referenced by a
String (blob key).

As you might have guessed by now, I forgot to delete those blobs.
Now I don't have any reference to them, but I want to delete them.
I can't seem to find a way to do that.
Any help will be appreciated.

UPDATE
Found the solution.

DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
List<BlobInfo> blobsToCheck = new LinkedList<BlobInfo>(); 
Iterator<BlobInfo> iterator = null;
if(afterBlobKey == null){
    iterator = new BlobInfoFactory().queryBlobInfos();
}else{
    iterator = new BlobInfoFactory().queryBlobInfosAfter(new BlobKey(afterBlobKey));
}

while(iterator.hasNext()){

    blobsToCheck.add(iterator.next());

}

//Check those blobs if they have reference in datastore
//Delete using blobstoreService.delete(blobKey);

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王权女流氓 2024-10-31 00:56:30

更新找到了解决方案，BlobInfoFactory().queryBlobInfos() 就是我正在寻找的。

    DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
    BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
    List<BlobInfo> blobsToCheck = new LinkedList<BlobInfo>(); 
    Iterator<BlobInfo> iterator = null;
    if(afterBlobKey == null){
        iterator = new BlobInfoFactory().queryBlobInfos();
    }else{
        iterator = new BlobInfoFactory().queryBlobInfosAfter(new BlobKey(afterBlobKey));
    }

    while(iterator.hasNext()){

        blobsToCheck.add(iterator.next());

    }

    //Check those blobs if they have reference in datastore
    //Delete using blobstoreService.delete(blobKey);

UPDATE Found the solution, BlobInfoFactory().queryBlobInfos() is what I was looking for.

    DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
    BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
    List<BlobInfo> blobsToCheck = new LinkedList<BlobInfo>(); 
    Iterator<BlobInfo> iterator = null;
    if(afterBlobKey == null){
        iterator = new BlobInfoFactory().queryBlobInfos();
    }else{
        iterator = new BlobInfoFactory().queryBlobInfosAfter(new BlobKey(afterBlobKey));
    }

    while(iterator.hasNext()){

        blobsToCheck.add(iterator.next());

    }

    //Check those blobs if they have reference in datastore
    //Delete using blobstoreService.delete(blobKey);

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