Blob (Google App Engine API for Java)

com.google.appengine.api.datastore

Class Blob

• java.lang.Object
• • com.google.appengine.api.datastore.Blob

• All Implemented Interfaces:

  java.io.Serializable

  ---

  
  

  public final class Blob
  extends java.lang.Object
  implements java.io.Serializable

  Blob contains an array of bytes. This byte array can be no bigger than 1MB. To store files, particularly files larger than this 1MB limit, look at the Blobstore API.

  See Also:

  Serialized Form

• • Constructor Summary

    Constructors 

    Constructor and Description
    Blob(byte[] bytes) Construct a new Blob with the specified bytes.

  • Method Summary

    All Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    boolean	equals(java.lang.Object object) Two Blob objects are considered equal if their contained bytes match exactly.
    byte[]	getBytes() Return the bytes stored in this Blob.
    int	hashCode()
    java.lang.String	toString() Simply prints the number of bytes contained in this Blob.

    • Methods inherited from class java.lang.Object

      getClass, notify, notifyAll, wait, wait, wait

• • Constructor Detail

    • Blob

      public Blob(byte[] bytes)

      Construct a new Blob with the specified bytes. Since Blobs can be quite large we do not perform a defensive copy of the provided byte array. It is the programmer's responsibility to avoid making changes to this array once the Blob has been constructed.

  • Method Detail

    • getBytes

      public byte[] getBytes()

      Return the bytes stored in this Blob.

    • hashCode

      public int hashCode()

      Overrides:

      hashCode in class java.lang.Object

    • equals

      public boolean equals(java.lang.Object object)

      Two Blob objects are considered equal if their contained bytes match exactly.

      Overrides:

      equals in class java.lang.Object

    • toString

      public java.lang.String toString()

      Simply prints the number of bytes contained in this Blob.

      Overrides:

      toString in class java.lang.Object