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org.apache.derby.impl.store.raw.log
Class LogRecord  

java.lang.Object
  org.apache.derby.impl.store.raw.log.LogRecord

All Implemented Interfaces:

java.io.Externalizable, org.apache.derby.iapi.services.io.Formatable, java.io.Serializable, org.apache.derby.iapi.services.io.TypedFormat

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public class LogRecord

extends java.lang.Object

implements org.apache.derby.iapi.services.io.Formatable

The log record written out to disk. This log record includes:

The is a holder object that may be setup using the setValue() and re-used rather than creating a new object for each actual log record.

        The format of a log record is

















Field Summary



private static int
formatLength



           



private  int
group



           



(package private)  java.io.ObjectInput
input



           



private  org.apache.derby.iapi.store.raw.Loggable
op



           



private  org.apache.derby.iapi.store.raw.xact.TransactionId
xactId



           


 






Constructor Summary


LogRecord()



           


 






Method Summary



static int
formatOverhead()



           



 org.apache.derby.iapi.store.raw.Loggable
getLoggable()



           



 org.apache.derby.iapi.store.raw.RePreparable
getRePreparable()



           



static int
getStoredSize(int group,
              org.apache.derby.iapi.store.raw.xact.TransactionId xactId)



           



 org.apache.derby.iapi.store.raw.xact.TransactionId
getTransactionId()



           



 int
getTypeFormatId()



          Return my format identifier.



 org.apache.derby.iapi.store.raw.Undoable
getUndoable()



           



 int
group()



           



 boolean
isAbort()



           



 boolean
isChecksum()



           



 boolean
isCLR()



           



 boolean
isCommit()



           



 boolean
isComplete()



           



 boolean
isFirst()



           



 boolean
isPrepare()



           



static int
maxGroupStoredSize()



           



static int
maxTransactionIdStoredSize(org.apache.derby.iapi.store.raw.xact.TransactionId tranId)



           



 void
readExternal(java.io.ObjectInput in)



          Read this in



 boolean
requiresPrepareLocks()



           



 void
setValue(org.apache.derby.iapi.store.raw.xact.TransactionId xactId,
         org.apache.derby.iapi.store.raw.Loggable op)



           



 void
skipLoggable()



          Skip over the loggable.



 void
writeExternal(java.io.ObjectOutput out)



          Write this out.


 


Methods inherited from class java.lang.Object


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


 








Field Detail




xactId
private org.apache.derby.iapi.store.raw.xact.TransactionId xactId







op
private org.apache.derby.iapi.store.raw.Loggable op







group
private int group







input
transient java.io.ObjectInput input







formatLength
private static final int formatLength











Constructor Detail




LogRecord
public LogRecord()









Method Detail




writeExternal
public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Write this out.


Specified by:
writeExternal in interface java.io.Externalizable








readExternal
public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Read this in


Specified by:
readExternal in interface java.io.Externalizable








getTypeFormatId
public int getTypeFormatId()

Return my format identifier.


Specified by:
getTypeFormatId in interface org.apache.derby.iapi.services.io.TypedFormat








setValue
public void setValue(org.apache.derby.iapi.store.raw.xact.TransactionId xactId,
                     org.apache.derby.iapi.store.raw.Loggable op)











formatOverhead
public static int formatOverhead()











maxGroupStoredSize
public static int maxGroupStoredSize()











maxTransactionIdStoredSize
public static int maxTransactionIdStoredSize(org.apache.derby.iapi.store.raw.xact.TransactionId tranId)











getStoredSize
public static int getStoredSize(int group,
                                org.apache.derby.iapi.store.raw.xact.TransactionId xactId)











getTransactionId
public org.apache.derby.iapi.store.raw.xact.TransactionId getTransactionId()
                                                                    throws java.io.IOException,
                                                                           java.lang.ClassNotFoundException











getLoggable
public org.apache.derby.iapi.store.raw.Loggable getLoggable()
                                                     throws java.io.IOException,
                                                            java.lang.ClassNotFoundException











getRePreparable
public org.apache.derby.iapi.store.raw.RePreparable getRePreparable()
                                                             throws java.io.IOException,
                                                                    java.lang.ClassNotFoundException











skipLoggable
public void skipLoggable()
                  throws org.apache.derby.iapi.error.StandardException

Skip over the loggable.  Set the input stream to point ot after the
                loggable as if the entire log record has been sucked in by the log
                record











getUndoable
public org.apache.derby.iapi.store.raw.Undoable getUndoable()
                                                     throws java.io.IOException,
                                                            java.lang.ClassNotFoundException











isCLR
public boolean isCLR()











isFirst
public boolean isFirst()











isComplete
public boolean isComplete()











isPrepare
public boolean isPrepare()











requiresPrepareLocks
public boolean requiresPrepareLocks()











isCommit
public boolean isCommit()











isAbort
public boolean isAbort()











group
public int group()











isChecksum
public boolean isChecksum()

















  

  
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