com.azure.storage.blob.specialized

Class BlobInputStream

java.lang.Object

java.io.InputStream

com.azure.storage.common.StorageInputStream

com.azure.storage.blob.specialized.BlobInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public final class BlobInputStream
extends StorageInputStream

Provides an input stream to read a given blob resource.

Field Summary

Fields inherited from class com.azure.storage.common.StorageInputStream

bufferSize, bufferStartOffset, lastError, streamFaulted

Method Summary

Modifier and Type	Method and Description
protected ByteBuffer	dispatchRead(int readLength, long offset) Dispatches a read operation of N bytes.
BlobProperties	getProperties() Gets the blob properties.

Methods inherited from class com.azure.storage.common.StorageInputStream

available, close, mark, markSupported, read, read, read, reset, skip

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

dispatchRead

protected ByteBuffer dispatchRead(int readLength,
                                  long offset)
                           throws IOException

Dispatches a read operation of N bytes. When using sparse page blobs, the page ranges are evaluated and zero bytes may be generated on the client side for some ranges that do not exist.

Specified by:

dispatchRead in class StorageInputStream

Parameters:

readLength - An int which represents the number of bytes to read.

Throws:

IOException - If an I/O error occurs.

getProperties

public BlobProperties getProperties()

Gets the blob properties.

If no data has been read from the stream, a network call is made to get properties. Otherwise, the blob properties obtained from the download are stored.

Returns:

BlobProperties