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oracle.streams
Class XStreamUtility

java.lang.Object
oracle.streams.XStreamUtility

public class XStreamUtility

extends java.lang.Object

The XStreamUtility class provides utility methods for using XStream APIs.

Field Summary

static int	MAX_POS_LENGTH
static int	POS_VERSION

Constructor Summary

XStreamUtility()

Method Summary

static byte[]	convertSCNToPosition(oracle.sql.NUMBER scn) Converts the given SCN to a XStream position.
static oracle.sql.NUMBER	getCommitSCNFromPosition(byte[] position) Gets the commit system change number (SCN) from a position.
static oracle.sql.NUMBER	getSCNFromPosition(byte[] position) Gets the SCN from a position.

Methods inherited from class java.lang.Object

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

Field Detail

POS_VERSION

public static final int POS_VERSION

See Also:

Constant Field Values

MAX_POS_LENGTH

public static final int MAX_POS_LENGTH

See Also:

Constant Field Values

Constructor Detail

XStreamUtility

public XStreamUtility()

Method Detail

getSCNFromPosition

public static oracle.sql.NUMBER getSCNFromPosition(byte[] position)
                                            throws StreamsException

Gets the SCN from a position.
This static method gets the SCN portion of an LCR position. This method can only be used for LCRs that contain positions generated by an Oracle database. This method does not support LCRs with user-defined positions.

Parameters:

position - An Oracle-specific XStream position.

Returns:

The SCN portion in the position in the form of oracle.sql.NUMBER

Throws:

StreamsException - if error occurs when retrieving SCN.

getCommitSCNFromPosition

public static oracle.sql.NUMBER getCommitSCNFromPosition(byte[] position)
                                                  throws StreamsException

Gets the commit system change number (SCN) from a position.
This method can only be used for LCRs that contain positions generated by an Oracle database. This method does not support LCRs with user-defined positions.

Parameters:

position - An Oracle-specific XStream position.

Returns:

the Commit SCN portion in the position in the form of oracle.sql.NUMBER

Throws:

StreamsException - if error occurs when retrieving CSCN.

convertSCNToPosition

public static byte[] convertSCNToPosition(oracle.sql.NUMBER scn)
                                   throws StreamsException

Converts the given SCN to a XStream position.

Parameters:

scn - the system change number in the form of oracle.sql.NUMBER.

Returns:

the XStream position in the form of a byte array

Throws:

StreamsException - if error occurs when converting SCN.

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