org.apache.derby.iapi.store.raw

Class ContainerLock

java.lang.Object

org.apache.derby.iapi.store.raw.ContainerLock

public final class ContainerLock
extends java.lang.Object

A ContainerLock represents a qualifier that is to be used when locking a container through a ContainerHandle.
MT - Immutable

See Also:

ContainerHandle, LockingPolicy

Field Summary

Fields

Modifier and Type	Field and Description
static int	C_NUMBER Number of types of container locks.
static ContainerLock	CIS Container Intent Shared lock
static ContainerLock	CIX Container Intent Exclusive lock
static ContainerLock	CS Container Shared lock
static ContainerLock	CU Container Update lock
static ContainerLock	CX Container Exclusive lock

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

C_NUMBER

public static final int C_NUMBER

Number of types of container locks.

See Also:

Constant Field Values

CIS

public static final ContainerLock CIS

Container Intent Shared lock

CIX

public static final ContainerLock CIX

Container Intent Exclusive lock

CS

public static final ContainerLock CS

Container Shared lock

CU

public static final ContainerLock CU

Container Update lock

CX

public static final ContainerLock CX

Container Exclusive lock

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 < C_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(ContainerLock granted)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object