BSONEncoder (mongo-java-driver 3.12.10 API)乐学网一站式学习平台

All Known Implementing Classes:

BasicBSONEncoder, DefaultDBEncoder
```
public interface BSONEncoder
```
A BSONEncoder is a class which can be used to turn documents into byte arrays. The BSONEncoder walks down through the object graph and writes corresponding byte sequences into underlying OutputBuffer.

This class is a part of legacy API. Please check Encoder for a new one.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`done()`	Free the resources.
`byte[]`	`encode(BSONObject document)`	Encode a document into byte array.
`int`	`putObject(BSONObject document)`	Encoder and write a document into underlying buffer.
`void`	`set(OutputBuffer buffer)`	Sets the buffer to wrich the result of encoding will be written.

- Method Detail
  - encode
```
byte[] encode(BSONObject document)
```
    Encode a document into byte array. This is a shortcut method which creates a new OutputBuffer, invokes the other 3 methods in a corresponding sequence:
    
    set(org.bson.io.OutputBuffer)
    
    putObject(BSONObject)
    
    done()
    
    and returns the contents of the OutputBuffer.
    Parameters:
    
    document - the document to be encoded
    
    Returns:
    
    a byte sequence
  - putObject
```
int putObject(BSONObject document)
```
    Encoder and write a document into underlying buffer.
    
    Parameters:
    
    document - the document to be encoded
    
    Returns:
    
    number of bytes written
  - done
```
void done()
```
    Free the resources.
  - set
```
void set(OutputBuffer buffer)
```
    Sets the buffer to wrich the result of encoding will be written.
    
    Parameters:
    
    buffer - the buffer to be used to write a byte sequences to