Java Doc for LogicalUndoOperation.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » store » raw » data » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.store.raw.data   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.derby.impl.store.raw.data.PageBasicOperation       org.apache.derby.impl.store.raw.data.LogicalUndoOperation LogicalUndoOperation public class LogicalUndoOperation extends PageBasicOperation implements Compensation(Code) LogicalUndoOperation is a compensation operation that rolls back the change of an LogicalUndoable operation. A LogicalUndoOperation itself is not undo-able, i.e, it is loggable but not undoable. Field Summary protected  int recordId      Constructor Summary protected   LogicalUndoOperation(BasePage page)      public   LogicalUndoOperation(BasePage page, int recordId, LogicalPageOperation op)      public   LogicalUndoOperation()      Return my format identifier. Method Summary final public  void doMe(Transaction xact, LogInstant instant, LimitObjectInput in)      final public  ByteArray getPreparedLog()      public  int getTypeFormatId()      public  int group()      public  void readExternal(ObjectInput in)      public  void releaseResource(Transaction xact)      public  void restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRinstant, LimitObjectInput in)      public  void setUndoOp(Undoable op)      Set up a LogicalOperation during recovery redo. public  String toString()      DEBUG: Print self. public  void writeExternal(ObjectOutput out)      Write this out. Field Detail recordId protected int recordId(Code) Constructor Detail LogicalUndoOperation protected LogicalUndoOperation(BasePage page)(Code) LogicalUndoOperation public LogicalUndoOperation(BasePage page, int recordId, LogicalPageOperation op)(Code) Set up a compensation operation during run time rollback LogicalUndoOperation public LogicalUndoOperation()(Code) Return my format identifier. Method Detail doMe final public void doMe(Transaction xact, LogInstant instant, LimitObjectInput in) throws StandardException, IOException(Code) Apply the undo operation, in this implementation of the RawStore, it can only call the undoMe method of undoOp Parameters:   xact - the Transaction that is doing the rollback Parameters:   instant - the log instant of this undo operation Parameters:   in - optional data exception:   IOException - Can be thrown by any of the methods of ObjectInput. exception:   StandardException - Standard Cloudscape policy. getPreparedLog final public ByteArray getPreparedLog()(Code) getTypeFormatId public int getTypeFormatId()(Code) group public int group()(Code) readExternal public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code) Read this in exception:   IOException - error reading from log stream exception:   ClassNotFoundException - log stream corrupted releaseResource public void releaseResource(Transaction xact)(Code) restoreMe public void restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRinstant, LimitObjectInput in)(Code) setUndoOp public void setUndoOp(Undoable op)(Code) Set up a LogicalOperation during recovery redo. toString public String toString()(Code) DEBUG: Print self. writeExternal public void writeExternal(ObjectOutput out) throws IOException(Code) Write this out. exception:   IOException - error writing to log stream Fields inherited from org.apache.derby.impl.store.raw.data.PageBasicOperation protected transient RawContainerHandle containerHdl(Code)(Java Doc) protected transient boolean foundHere(Code)(Java Doc) protected transient BasePage page(Code)(Java Doc) Methods inherited from org.apache.derby.impl.store.raw.data.PageBasicOperation final public BasePage findpage(Transaction xact) throws StandardException(Code)(Java Doc) final public Page getPage()(Code)(Java Doc) protected BasePage getPageForRedoRecovery(Transaction xact) throws StandardException(Code)(Java Doc) final protected PageKey getPageId()(Code)(Java Doc) final public long getPageVersion()(Code)(Java Doc) public ByteArray getPreparedLog() throws StandardException(Code)(Java Doc) public int group()(Code)(Java Doc) final public boolean needsRedo(Transaction xact) throws StandardException(Code)(Java Doc) public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code)(Java Doc) public void reclaimPrepareLocks(Transaction t, LockingPolicy locking_policy) throws StandardException(Code)(Java Doc) public void releaseResource(Transaction xact)(Code)(Java Doc) final protected void resetPageNumber(long pageNumber)(Code)(Java Doc) abstract public void restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRinstant, LimitObjectInput in) throws StandardException, IOException(Code)(Java Doc) public String toString()(Code)(Java Doc) public void writeExternal(ObjectOutput out) throws IOException(Code)(Java Doc) 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)