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Java Source Code / Java Documentation » JMX » je » com.sleepycat.je.txn 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.sleepycat.je.txn.LockType

LockType
public class LockType (Code)
LockType is a type safe enumeration of all lock types. Methods on LockType objects can be used to determine whether a type conflicts with another type or can be upgraded to another type.


Field Summary
final public static  LockTypeNONE
     NONE is used for requesting a dirty read and does not appear in the conflict or upgrade matrices.
final public static  LockTypeRANGE_INSERT
    
final public static  LockTypeRANGE_READ
    
final public static  LockTypeRANGE_WRITE
    
final public static  LockTypeREAD
     Lock types.
final public static  LockTypeRESTART
     RESTART is used for waiting for a restart and does not appear in the conflict or upgrade matrices.
final public static  LockTypeWRITE
    


Method Summary
final  booleangetCausesRestart()
     Returns whether when this type is requested it can result in LockGrantType.RESTART.
 LockConflictgetConflict(LockType requestedType)
     Returns the LockConfict that results when this lock type is held and the given lock type is requested by another locker.
 LockUpgradegetUpgrade(LockType requestedType)
     Returns the LockUpgrade that results when this lock type is held and the given lock type is requested by the same locker.
final public  booleanisWriteLock()
     Returns true if this is a WRITE or RANGE_WRITE lock.
public  StringtoString()
    

Field Detail
NONE
final public static LockType NONE(Code)
NONE is used for requesting a dirty read and does not appear in the conflict or upgrade matrices.



RANGE_INSERT
final public static LockType RANGE_INSERT(Code)



RANGE_READ
final public static LockType RANGE_READ(Code)



RANGE_WRITE
final public static LockType RANGE_WRITE(Code)



READ
final public static LockType READ(Code)
Lock types. Indexes must be kept manually synchronized in the matrixes below.



RESTART
final public static LockType RESTART(Code)
RESTART is used for waiting for a restart and does not appear in the conflict or upgrade matrices.



WRITE
final public static LockType WRITE(Code)





Method Detail
getCausesRestart
final boolean getCausesRestart()(Code)
Returns whether when this type is requested it can result in LockGrantType.RESTART.



getConflict
LockConflict getConflict(LockType requestedType)(Code)
Returns the LockConfict that results when this lock type is held and the given lock type is requested by another locker.



getUpgrade
LockUpgrade getUpgrade(LockType requestedType)(Code)
Returns the LockUpgrade that results when this lock type is held and the given lock type is requested by the same locker.

For the returned LockUpgrade object, getIllegal will never return true because this method fires an assertion if getIllegal returns true.




isWriteLock
final public boolean isWriteLock()(Code)
Returns true if this is a WRITE or RANGE_WRITE lock. For RANGE_INSERT, false is returned because RANGE_INSERT is used to lock the key following the insertion key, not the insertion key itself.



toString
public String toString()(Code)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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