org.apache.derby.iapi.store.raw

Class RowLock

java.lang.Object

org.apache.derby.iapi.store.raw.RowLock

public final class RowLock
extends java.lang.Object

A RowLock represents a qualifier that is to be used when locking a Row through a RecordHandle.
MT - Immutable

See Also:

RecordHandle, LockingPolicy

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DIAG_CONGLOMID
static java.lang.String	DIAG_CONTAINERID
static java.lang.String	DIAG_COUNT
static java.lang.String	DIAG_GROUP
static java.lang.String	DIAG_INDEX
static java.lang.String	DIAG_LOCKMODE
static java.lang.String	DIAG_LOCKTYPE
static java.lang.String	DIAG_PAGENUM
static java.lang.String	DIAG_RECID
static java.lang.String	DIAG_SEGMENTID
static java.lang.String	DIAG_STATE
static java.lang.String	DIAG_XACTID
static int	R_NUMBER Number of row locks.
static RowLock	RI
static RowLock	RIP
static RowLock	RS2
static RowLock	RS3
static RowLock	RU2
static RowLock	RU3
static RowLock	RX2
static RowLock	RX3

Method Summary

Modifier and Type	Method and Description
int	getType() Get an integer representation of the type of the lock.
boolean	isCompatible(RowLock granted)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

R_NUMBER

public static final int R_NUMBER

Number of row locks.

See Also:

Constant Field Values

RS2

public static final RowLock RS2

RS3

public static final RowLock RS3

RU2

public static final RowLock RU2

RU3

public static final RowLock RU3

RIP

public static final RowLock RIP

RI

public static final RowLock RI

RX2

public static final RowLock RX2

RX3

public static final RowLock RX3

DIAG_INDEX

public static final java.lang.String DIAG_INDEX

See Also:

Constant Field Values

DIAG_XACTID

public static final java.lang.String DIAG_XACTID

See Also:

Constant Field Values

DIAG_LOCKTYPE

public static final java.lang.String DIAG_LOCKTYPE

See Also:

Constant Field Values

DIAG_LOCKMODE

public static final java.lang.String DIAG_LOCKMODE

See Also:

Constant Field Values

DIAG_CONGLOMID

public static final java.lang.String DIAG_CONGLOMID

See Also:

Constant Field Values

DIAG_CONTAINERID

public static final java.lang.String DIAG_CONTAINERID

See Also:

Constant Field Values

DIAG_SEGMENTID

public static final java.lang.String DIAG_SEGMENTID

See Also:

Constant Field Values

DIAG_PAGENUM

public static final java.lang.String DIAG_PAGENUM

See Also:

Constant Field Values

DIAG_RECID

public static final java.lang.String DIAG_RECID

See Also:

Constant Field Values

DIAG_COUNT

public static final java.lang.String DIAG_COUNT

See Also:

Constant Field Values

DIAG_GROUP

public static final java.lang.String DIAG_GROUP

See Also:

Constant Field Values

DIAG_STATE

public static final java.lang.String DIAG_STATE

See Also:

Constant Field Values

Method Detail

getType

public int getType()

Get an integer representation of the type of the lock. This method is guaranteed to return an integer >= 0 and < R_NUMBER. No correlation between the value and one of the static variables (CIS etc.) is guaranteed, except that the values returned do not change.

isCompatible

public boolean isCompatible(RowLock granted)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object