🌐 GridFSDBFile - mongodb.github.io

java.lang.Object
- com.mongodb.gridfs.GridFSFile
- - com.mongodb.gridfs.GridFSDBFile

All Implemented Interfaces:

DBObject, BSONObject
```
public class GridFSDBFile
extends GridFSFile
```
This class enables retrieving a GridFS file metadata and content. Operations include:
- Writing data to a file on disk or an OutputStream
- Creating an InputStream to stream the data into
MongoDB documentation
GridFS

Constructor Summary

Constructors
Constructor Description

GridFSDBFile()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`InputStream`	`getInputStream()`	Returns an InputStream from which data can be read.
`long`	`writeTo(File file)`	Writes the file's data to a file on disk.
`long`	`writeTo(OutputStream out)`	Writes the file's data to an OutputStream.
`long`	`writeTo(String filename)`	Writes the file's data to a file on disk.

Methods inherited from class com.mongodb.gridfs.GridFSFile
containsField, containsKey, get, getAliases, getChunkSize, getContentType, getFilename, getGridFS, getId, getLength, getMD5, getMetaData, getUploadDate, isPartialObject, keySet, markAsPartialObject, numChunks, put, putAll, putAll, removeField, save, setGridFS, setMetaData, toMap, toString, validate

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - GridFSDBFile
```
public GridFSDBFile()
```
- Method Detail
  - getInputStream
```
public InputStream getInputStream()
```
    Returns an InputStream from which data can be read.
    
    Returns:
    
    the input stream
  - writeTo
```
public long writeTo(String filename)
             throws IOException
```
    Writes the file's data to a file on disk.
    
    Parameters:
    
    filename - the file name on disk
    
    Returns:
    
    number of bytes written
    
    Throws:
    
    IOException - if there are problems writing to the file
  - writeTo
```
public long writeTo(File file)
             throws IOException
```
    Writes the file's data to a file on disk.
    
    Parameters:
    
    file - the File object
    
    Returns:
    
    number of bytes written
    
    Throws:
    
    IOException - if there are problems writing to the file
  - writeTo
```
public long writeTo(OutputStream out)
             throws IOException
```
    Writes the file's data to an OutputStream.
    
    Parameters:
    
    out - the OutputStream
    
    Returns:
    
    number of bytes written
    
    Throws:
    
    IOException - if there are problems writing to out