Java Doc for LogEntry.java in  » Database-DBMS » Quadcap-Embeddable-Database » com » quadcap » sql » file » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » Quadcap Embeddable Database » com.quadcap.sql.file   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.quadcap.sql.file.LogEntry All known Subclasses:   com.quadcap.sql.LogStep, LogEntry public class LogEntry implements LogOp,Externable(Code) An entry in the log. For 'STEP' items, which represent actions in the database, the first byte is the 'redo state', which is initially zero (DONE) and is overwritten to one (UNDONE) if the step is 'undone' as part of a rollback. author:    Stan Bailes Field Summary final public static  int BEGIN_STATEMENT      final public static  int BEGIN_TRANSACTION      final public static  int BLOCK_WRITE      final public static  int CHECKPOINT      final public static  int CLOSE      final public static  int COMMIT      final public static  int DONE      final public static  int FLUSH      final public static  int MAX_CODES      final public static  int ROLLBACK      final public static  int STEP      final public static  int SYNC      final public static  int UNDONE       int code      static  Extern extern      transient  int position       int prev       int redoState       int stmtId       long transId      Constructor Summary public   LogEntry()      public   LogEntry(int code)      public   LogEntry(long transId, int code)      public   LogEntry(long transId, int stmtId, int code)      Method Summary public  void discard(Datafile db)      final public  int getCode()      public  Extern getExtern()      final public  int getPosition()      final  int getPrev()      final public  int getRedoState()      final public  int getStatementId()      final public  long getTransactionId()      public  void handle(Log log)      public  void readExternal(ObjectInput in)      public  void redo(Transaction t, Datafile db)      Do the actual work necessary to perform this logged operation. public  void setExtern(Extern extern)      final  void setPosition(int position)      final  void setPrev(int prev)      final public  void setRedoState(int redo)      final public  void setStatementId(int stmtId)      final public  void setTransactionId(long transId)      public  String toString()      public  void undo(Transaction t, Datafile db)      Do the actual work necessary to undo this logged operation. public  void writeExternal(ObjectOutput out)      Field Detail BEGIN_STATEMENT final public static int BEGIN_STATEMENT(Code) BEGIN_TRANSACTION final public static int BEGIN_TRANSACTION(Code) BLOCK_WRITE final public static int BLOCK_WRITE(Code) CHECKPOINT final public static int CHECKPOINT(Code) CLOSE final public static int CLOSE(Code) COMMIT final public static int COMMIT(Code) DONE final public static int DONE(Code) FLUSH final public static int FLUSH(Code) MAX_CODES final public static int MAX_CODES(Code) ROLLBACK final public static int ROLLBACK(Code) STEP final public static int STEP(Code) SYNC final public static int SYNC(Code) UNDONE final public static int UNDONE(Code) code int code(Code) extern static Extern extern(Code) position transient int position(Code) prev int prev(Code) redoState int redoState(Code) stmtId int stmtId(Code) transId long transId(Code) Constructor Detail LogEntry public LogEntry()(Code) LogEntry public LogEntry(int code)(Code) LogEntry public LogEntry(long transId, int code)(Code) LogEntry public LogEntry(long transId, int stmtId, int code)(Code) Method Detail discard public void discard(Datafile db) throws IOException(Code) getCode final public int getCode()(Code) getExtern public Extern getExtern()(Code) getPosition final public int getPosition()(Code) getPrev final int getPrev()(Code) getRedoState final public int getRedoState()(Code) getStatementId final public int getStatementId()(Code) Return the statement ID for this entry getTransactionId final public long getTransactionId()(Code) Return the transaction ID for this entry handle public void handle(Log log) throws Exception(Code) readExternal public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code) redo public void redo(Transaction t, Datafile db) throws IOException, DatafileException(Code) Do the actual work necessary to perform this logged operation. In this base class, there's nothing to do. setExtern public void setExtern(Extern extern)(Code) setPosition final void setPosition(int position)(Code) setPrev final void setPrev(int prev)(Code) setRedoState final public void setRedoState(int redo)(Code) setStatementId final public void setStatementId(int stmtId)(Code) Bind this LogEntry to a statement setTransactionId final public void setTransactionId(long transId)(Code) Bind this LogEntry to a transaction toString public String toString()(Code) undo public void undo(Transaction t, Datafile db) throws IOException, DatafileException(Code) Do the actual work necessary to undo this logged operation. In this base class, there's nothing to do. writeExternal public void writeExternal(ObjectOutput out) throws IOException(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)