com.altair.hwm.database.sql
Class HWMBlobDB

java.lang.Object
  com.altair.hwm.database.sql.HWMBlobDB

All Implemented Interfaces:

java.io.Serializable, java.sql.Blob

public class HWMBlobDB
extends java.lang.Object
implements java.sql.Blob, java.io.Serializable

Title: HWMBlobDB

Description: The blob implementation for embedded databases

Company: Altair Engineering, Inc.

See Also:

Serialized Form

Constructor Summary

HWMBlobDB()
Constructor

HWMBlobDB(java.sql.Blob blob)
Constructor

HWMBlobDB(byte[] arrBytes)
Constructor

Method Summary

java.io.InputStream	getBinaryStream() Retrieves the BLOB designated by this Blob instance as a stream.
byte[]	getBytes(long lPos, int nLength) Returns as an array of bytes, part or all of the BLOB value that this Blob object designates.
long	length() Returns the number of bytes in the BLOB value designated by this Blob object.
long	position(java.sql.Blob blobPattern, long lStart) Determines the byte position in the BLOB value designated by this Blob object at which pattern begins.
long	position(byte[] bytearrPattern, long lStart) Determines the byte position at which the specified byte pattern begins within the BLOB value that this Blob object represents.
java.io.OutputStream	setBinaryStream(long pos)
int	setBytes(long pos, byte[] bytes)
int	setBytes(long pos, byte[] bytes, int offset, int len)
java.lang.String	toString() Returns a string representation of this class
void	truncate(long len)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

HWMBlobDB

public HWMBlobDB()

Constructor

HWMBlobDB

public HWMBlobDB(byte[] arrBytes)

Constructor

Parameters:

byte[] - The byte array to store

HWMBlobDB

public HWMBlobDB(java.sql.Blob blob)
          throws java.sql.SQLException

Constructor

Parameters:

blob - The blob to store

Throws:

java.sql.SQLException

Method Detail

toString

public java.lang.String toString()

Returns a string representation of this class

Overrides:

toString in class java.lang.Object

Returns:

String The string representation

length

public long length()
            throws java.sql.SQLException

Returns the number of bytes in the BLOB value designated by this Blob object.

Specified by:

length in interface java.sql.Blob

Returns:

length of the BLOB in bytes

Throws:

java.sql.SQLException - if there is an error accessing the length of the BLOB

Since:

1.2

See Also:

What Is in the JDBC 2.0 API

getBytes

public byte[] getBytes(long lPos,
                       int nLength)
                throws java.sql.SQLException

Returns as an array of bytes, part or all of the BLOB value that this Blob object designates. The byte array contains up to length consecutive bytes starting at position pos.

Specified by:

getBytes in interface java.sql.Blob

Parameters:

lPos - the ordinal position of the first byte in the BLOB value to be extracted; the first byte is at position 1 NOTE: Always returns the entire array of bytes

nLength - the number of consecutive bytes to be copied

Returns:

a byte array containing up to length consecutive bytes from the BLOB value designated by this Blob object, starting with the byte at position pos

Throws:

java.sql.SQLException - if there is an error accessing the BLOB

Since:

1.2

See Also:

What Is in the JDBC 2.0 API

getBinaryStream

public java.io.InputStream getBinaryStream()
                                    throws java.sql.SQLException

Retrieves the BLOB designated by this Blob instance as a stream.

Specified by:

getBinaryStream in interface java.sql.Blob

Returns:

a stream containing the BLOB data

Throws:

java.sql.SQLException - if there is an error accessing the BLOB

Since:

1.2

See Also:

What Is in the JDBC 2.0 API

position

public long position(byte[] bytearrPattern,
                     long lStart)
              throws java.sql.SQLException

Determines the byte position at which the specified byte pattern begins within the BLOB value that this Blob object represents. The search for pattern begins at position start.

Specified by:

position in interface java.sql.Blob

Parameters:

bytearrPattern - the byte array for which to search

lStart - the position at which to begin searching; the first position is 1

Returns:

the position at which the pattern appears, else -1

Throws:

java.sql.SQLException - if there is an error accessing the BLOB

Since:

1.2

See Also:

What Is in the JDBC 2.0 API

position

public long position(java.sql.Blob blobPattern,
                     long lStart)
              throws java.sql.SQLException

Determines the byte position in the BLOB value designated by this Blob object at which pattern begins. The search begins at position start.

Specified by:

position in interface java.sql.Blob

Parameters:

blobPattern - the Blob object designating the BLOB value for which to search

lStart - the position in the BLOB value at which to begin searching; the first position is 1

Returns:

the position at which the pattern begins, else -1

Throws:

java.sql.SQLException - if there is an error accessing the BLOB

Since:

1.2

See Also:

What Is in the JDBC 2.0 API

truncate

public void truncate(long len)
              throws java.sql.SQLException

Specified by:

truncate in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

public int setBytes(long pos,
                    byte[] bytes)
             throws java.sql.SQLException

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

public int setBytes(long pos,
                    byte[] bytes,
                    int offset,
                    int len)
             throws java.sql.SQLException

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

setBinaryStream

public java.io.OutputStream setBinaryStream(long pos)
                                     throws java.sql.SQLException

Specified by:

setBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException