程序包 org.hibernate.engine.jdbc

类 BlobProxy

java.lang.Object

org.hibernate.engine.jdbc.BlobProxy

所有已实现的接口:

Blob, BlobImplementer

public final class BlobProxy
extends Object
implements Blob, BlobImplementer

Manages aspects of representing Blob objects. In previous versions this used to be implemented by using a java.lang.reflect.Proxy to deal with incompatibilities across various JDBC versions, hence the class name, but using a real Proxy is no longer necessary. The class name could be updated to reflect this but that would break APIs, so this operation is deferred.

作者:

Gavin King, Steve Ebersole, Gail Badner, Sanne Grinovero

方法概要

修饰符和类型	方法	说明
void	free()
static Blob	generateProxy(byte[] bytes)	Generates a BlobImpl using byte data.
static Blob	generateProxy(InputStream stream, long length)	Generates a BlobImpl proxy using a given number of bytes from an InputStream.
InputStream	getBinaryStream()
InputStream	getBinaryStream(long start, long length)
byte[]	getBytes(long start, int length)
BinaryStream	getUnderlyingStream()	Gets access to the data underlying this BLOB.
long	length()
long	position(byte[] pattern, long start)
long	position(Blob pattern, long start)
OutputStream	setBinaryStream(long pos)
int	setBytes(long pos, byte[] bytes)
int	setBytes(long pos, byte[] bytes, int offset, int len)
void	truncate(long len)

从类继承的方法 java.lang.Object

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

方法详细资料

getUnderlyingStream

public BinaryStream getUnderlyingStream()
                                 throws SQLException

从接口复制的说明: BlobImplementer

Gets access to the data underlying this BLOB.

指定者:

getUnderlyingStream 在接口中 BlobImplementer

返回:

Access to the underlying data.

抛出:

SQLException

generateProxy

public static Blob generateProxy(byte[] bytes)

Generates a BlobImpl using byte data.

参数:

bytes - The data to be created as a Blob.

返回:

The BlobProxy instance to represent this data.

generateProxy

public static Blob generateProxy(InputStream stream,
                                 long length)

Generates a BlobImpl proxy using a given number of bytes from an InputStream.

参数:

stream - The input stream of bytes to be created as a Blob.

length - The number of bytes from stream to be written to the Blob.

返回:

The BlobProxy instance to represent this data.

length

public long length()
            throws SQLException

指定者:

length 在接口中 Blob

抛出:

SQLException

getBytes

public byte[] getBytes(long start,
                       int length)
                throws SQLException

指定者:

getBytes 在接口中 Blob

抛出:

SQLException

getBinaryStream

public InputStream getBinaryStream()
                            throws SQLException

指定者:

getBinaryStream 在接口中 Blob

抛出:

SQLException

position

public long position(byte[] pattern,
                     long start)

指定者:

position 在接口中 Blob

position

public long position(Blob pattern,
                     long start)

指定者:

position 在接口中 Blob

setBytes

public int setBytes(long pos,
                    byte[] bytes)

指定者:

setBytes 在接口中 Blob

setBytes

public int setBytes(long pos,
                    byte[] bytes,
                    int offset,
                    int len)

指定者:

setBytes 在接口中 Blob

setBinaryStream

public OutputStream setBinaryStream(long pos)

指定者:

setBinaryStream 在接口中 Blob

truncate

public void truncate(long len)

指定者:

truncate 在接口中 Blob

free

public void free()

指定者:

free 在接口中 Blob

getBinaryStream

public InputStream getBinaryStream(long start,
                                   long length)
                            throws SQLException

指定者:

getBinaryStream 在接口中 Blob

抛出:

SQLException