Blob (Google Cloud Datastore Parent 2.17.1 API)

java.lang.Object
- com.google.cloud.datastore.Blob

All Implemented Interfaces:

Serializable
```
public final class Blob
extends Object
implements Serializable
```
A Google Cloud Datastore Blob. This class is immutable.

See Also:

Google Cloud Datastore Entities, Properties, and Keys, Serialized Form

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`InputStream`	`asInputStream()`	Returns an `InputStream` for this blob content.
`ByteBuffer`	`asReadOnlyByteBuffer()`	Returns a read-only `ByteBuffer` for this blob content.
`static Blob`	`copyFrom(byte[] bytes)`
`static Blob`	`copyFrom(InputStream input)`
`static Blob`	`copyFrom(ByteBuffer bytes)`
`void`	`copyTo(byte[] target)`	Copies bytes into a buffer.
`void`	`copyTo(ByteBuffer target)`	Copies bytes into a ByteBuffer.
`boolean`	`equals(Object obj)`
`int`	`getLength()`	Returns the size of this blob.
`int`	`hashCode()`
`byte[]`	`toByteArray()`	Returns a copy as byte array.
`String`	`toString()`

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

- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - getLength
```
public int getLength()
```
    Returns the size of this blob.
  - toByteArray
```
public byte[] toByteArray()
```
    Returns a copy as byte array.
  - asReadOnlyByteBuffer
```
public ByteBuffer asReadOnlyByteBuffer()
```
    Returns a read-only ByteBuffer for this blob content.
  - asInputStream
```
public InputStream asInputStream()
```
    Returns an InputStream for this blob content.
  - copyTo
```
public void copyTo(ByteBuffer target)
```
    Copies bytes into a ByteBuffer.
    
    Throws:
    
    ReadOnlyBufferException - if the target is read-only
    
    BufferOverflowException - if the target's remaining() space is not large enough to hold the data
  - copyTo
```
public void copyTo(byte[] target)
```
    Copies bytes into a buffer.
    
    Throws:
    
    IndexOutOfBoundsException - if an offset or size is negative or too large
  - copyFrom
```
public static Blob copyFrom(byte[] bytes)
```
  - copyFrom
```
public static Blob copyFrom(ByteBuffer bytes)
```
  - copyFrom
```
public static Blob copyFrom(InputStream input)
                     throws IOException
```
    Throws:
    
    IOException