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oracle.streams
Interface RowLCR

All Superinterfaces:

LCR

All Known Implementing Classes:

DefaultRowLCR

public interface RowLCR

extends LCR

The RowLCR interface encapsulates the information about a row logical change record (LCR). The row LCR is a logical change record that describes a change to the data in a single row that results from a data manipulation language (DML) statement or a piecewise LOB operation.
You can choose to have a customized implementation of RowLCR by implementing this interface.

See Also:

AbstractLCR, DDLLCR

Field Summary

static java.lang.String	COMMIT
static java.lang.String	DELETE
static java.lang.String	INSERT
static java.lang.String	LOB_ERASE
static java.lang.String	LOB_TRIM
static java.lang.String	LOB_WRITE
static java.lang.String	UPDATE

Fields inherited from interface oracle.streams.LCR

ATTRIBUTE_ROOT_NAME, ATTRIBUTE_ROW_ID, ATTRIBUTE_SERIAL_NUM, ATTRIBUTE_SESSION_NUM, ATTRIBUTE_THREAD_NUM, ATTRIBUTE_TX_NAME, ATTRIBUTE_USERNAME

Method Summary

ColumnValue[]	getNewValues() Gets the list of new column values in a row LCR.
ColumnValue[]	getOldValues() Gets the list of old column values in a row LCR.
boolean	hasChunkData() Indicates whether this LCR contains chunk data for LOB, LONG, or XMLTYPE columns.
void	setChunkDataFlag(boolean chunkDataFlag) Sets the chunkDataFlag.
void	setNewValues(ColumnValue[] newValues) Sets the new column values list for a row LCR.
void	setOldValues(ColumnValue[] oldValues) Sets the old column values list for a row LCR.

Methods inherited from interface oracle.streams.LCR

getAttribute, getCommandType, getObjectName, getObjectOwner, getPosition, getSourceDatabaseName, getSourceTime, getTag, getTransactionId, setAttribute, setCommandType, setObjectName, setObjectOwner, setPosition, setSourceDatabaseName, setSourceTime, setTag, setTransactionId

Field Detail

INSERT

static final java.lang.String INSERT

See Also:

Constant Field Values

UPDATE

static final java.lang.String UPDATE

See Also:

Constant Field Values

DELETE

static final java.lang.String DELETE

See Also:

Constant Field Values

COMMIT

static final java.lang.String COMMIT

See Also:

Constant Field Values

LOB_WRITE

static final java.lang.String LOB_WRITE

See Also:

Constant Field Values

LOB_ERASE

static final java.lang.String LOB_ERASE

See Also:

Constant Field Values

LOB_TRIM

static final java.lang.String LOB_TRIM

See Also:

Constant Field Values

Method Detail

getOldValues

ColumnValue[] getOldValues()

Gets the list of old column values in a row LCR.
These are the column values for the row before the DML change.
If the DML statement is an UPDATE or a DELETE statement, then this parameter contains the values of columns in the row before the DML statement.
If the DML statement is an INSERT statement, then there are no old values and NULL is returned. Note that the returned ColumnValue[] is mutable.

Returns:

A ColumnValue array contains the old column value

getNewValues

ColumnValue[] getNewValues()

Gets the list of new column values in a row LCR.
These are the column values for the row after the DML change.
If the DML statement is an UPDATE or an INSERT statement, then this parameter contains the values of columns in the row after the DML statement.
If the DML statement is a DELETE statement, then there are no new values and NULL is returned.
Note that the returned ColumnValue[] is mutable.

Returns:

A ColumnValue array contains the new column value

setOldValues

void setOldValues(ColumnValue[] oldValues)

Sets the old column values list for a row LCR.
If the DML statement is an UPDATE or a DELETE statement, then set this parameter to a non-NULL value.
If the DML statement is an INSERT statement, then set this parameter to a NULL value.

Parameters:

oldValues - The old column value array

setNewValues

void setNewValues(ColumnValue[] newValues)

Sets the new column values list for a row LCR.
If the DML statement is an UPDATE or an INSERT statement, then set this parameter to a non-NULL value.
If the DML statement is a DELETE statement, then set this parameter to a NULL value.

Parameters:

newValues - The new column value array

hasChunkData

boolean hasChunkData()

Indicates whether this LCR contains chunk data for LOB, LONG, or XMLTYPE columns.
If an LCR contains chunk data for LOB, LONG, or XMLTYPE columns and must use the XStreamOUT APIs for chunking, then call this method to check whether the LCR contains chunk data and invoke the XStreamOut APIs for chunking accordingly.

Returns:

A boolean flag indicates if this LCR contains chunk data.

setChunkDataFlag

void setChunkDataFlag(boolean chunkDataFlag)

Sets the chunkDataFlag.
If an LCR contains chunk data for LOB, LONG, or XMLTYPE columns and must use the XStreamOUT APIs for chunking, then call this method to set the chunkDataFLag to true and invoke the XStreamOut APIs for chunking accordingly.

Parameters:

chunkDataFlag - indicates whether this LCR contains chunk data.

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