org.apache.jackrabbit.mk.blobs

Interface BlobStore

All Known Implementing Classes:

AbstractBlobStore, DbBlobStore, FileBlobStore, MemoryBlobStore

public interface BlobStore

An interface to store and read large binary objects.

Method Summary

Methods

Modifier and Type	Method and Description
long	getBlobLength(String blobId) Get the length of the blob.
int	readBlob(String blobId, long pos, byte[] buff, int off, int length) Read a number of bytes from a blob.
String	writeBlob(InputStream in) Write a blob from an input stream.

Method Detail

writeBlob

String writeBlob(InputStream in)
                 throws Exception

Write a blob from an input stream. This method closes the input stream.

Parameters:

in - the input stream

Returns:

the blob id

Throws:

Exception

readBlob

int readBlob(String blobId,
           long pos,
           byte[] buff,
           int off,
           int length)
             throws Exception

Read a number of bytes from a blob.

Parameters:

blobId - the blob id

pos - the position within the blob

buff - the target byte array

off - the offset within the target array

length - the number of bytes to read

Returns:

the number of bytes read

Throws:

Exception

getBlobLength

long getBlobLength(String blobId)
                   throws Exception

Get the length of the blob.

Parameters:

blobId - the blob id

Returns:

the length

Throws:

Exception