Example usage for com.mongodb.gridfs GridFS getFileList

Introduction

In this page you can find the example usage for com.mongodb.gridfs GridFS getFileList.

Prototype

public DBCursor getFileList(final DBObject query) 

Source Link

Document

Gets a filtered list of files stored in this gridfs, sorted by filename.

Usage

From source file:de.iew.imageread.Main.java

License:Apache License

public void run() {
    try {/* www. java2  s  .  c o  m*/
        this.imageOutputDir = System.getProperty("java.io.tmpdir");

        File outputBase = new File(this.imageOutputDir);
        testAndCreateDirectory(outputBase);

        MongoClient mongoClient = new MongoClient(this.mongohost, this.mongoport);

        DB db = mongoClient.getDB(this.mongodb);

        GridFS gridFS = new GridFS(db);

        DBCursor cursor = gridFS.getFileList(this.queryFromOptions()).sort(new BasicDBObject("uploadDate", -1));

        int imageNumber = 0;
        while (cursor.hasNext()) {
            DBObject fileObject = cursor.next();

            GridFSDBFile file = gridFS.find((ObjectId) fileObject.get("_id"));
            printGridFSDBFile(file);

            if (writeImageFile(outputBase, imageNumber, file)) {
                imageNumber++;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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