Java Doc for Logger1.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.Logger1 Logger1 public class Logger1 implements Logger(Code) A Logger implmeentation using a fixed size circular buffer. author:    Stan Bailes Inner Class :class TransMap Field Summary  ByteArrayRandomAccess bra       LogBuffer cb       InputStream cbIn       Datafile db       long lastSize       int liveTrans      Keep the actual count of live transactions as determined by calls to beginTransaction, endTransaction.  int maxSize       int minSize       Log myLog       int numTrans      Keeps track of the number of TransMap entries allocated.  ObjectInputStream ois       ObjectOutputStream oos       long prevOp       RandomAccessInputStream ris       byte[] tmp       TransMap[] trans      Constructor Summary   Logger1()      Method Summary public  void checkpoint()      public  void close()       int findTransaction(long transId)      public  int getActiveTransactionCount()      public  LongMap getActiveTransactions()      public  int getCheckpoint()      public  int getEnd()      public  LogEntry getFirstOp()      public  LogEntry getLastOp(long transId)      public  LogEntry getNextOp()      public  long getOldestTransaction()      public  LogEntry getPrevOp(LogEntry op)      public  void init(Log log, boolean create, Properties props)      public  void init(File file)      public  void put(LogEntry op)      public  void reset()      public  int rput(LogEntry op)      public  void setRedoState(LogEntry op, int state)      public  void sync()      public  String toString()      Field Detail bra ByteArrayRandomAccess bra(Code) cb LogBuffer cb(Code) cbIn InputStream cbIn(Code) db Datafile db(Code) lastSize long lastSize(Code) liveTrans int liveTrans(Code) Keep the actual count of live transactions as determined by calls to beginTransaction, endTransaction. maxSize int maxSize(Code) minSize int minSize(Code) myLog Log myLog(Code) numTrans int numTrans(Code) Keeps track of the number of TransMap entries allocated. Some entries will correspond to completed but not yet checkpointed transactions, so this number may be larger than the number of actual live transactions. ois ObjectInputStream ois(Code) oos ObjectOutputStream oos(Code) prevOp long prevOp(Code) The starting position of the most recent op we wrote to the file ris RandomAccessInputStream ris(Code) tmp byte[] tmp(Code) trans TransMap[] trans(Code) Transaction map: - ordered by transactionStart - first transaction is the oldest transaction still running so when committing the oldest transaction, move the begin - last transaction is the newest transaction still running transactions! Constructor Detail Logger1 Logger1()(Code) Method Detail checkpoint public void checkpoint() throws IOException(Code) close public void close() throws IOException(Code) findTransaction int findTransaction(long transId)(Code) Find the TransMap entry for the given transaction id getActiveTransactionCount public int getActiveTransactionCount()(Code) getActiveTransactions public LongMap getActiveTransactions()(Code) getCheckpoint public int getCheckpoint()(Code) getEnd public int getEnd()(Code) getFirstOp public LogEntry getFirstOp() throws IOException(Code) getLastOp public LogEntry getLastOp(long transId) throws IOException(Code) getNextOp public LogEntry getNextOp() throws IOException(Code) getOldestTransaction public long getOldestTransaction()(Code) getPrevOp public LogEntry getPrevOp(LogEntry op) throws IOException(Code) init public void init(Log log, boolean create, Properties props) throws IOException(Code) init public void init(File file) throws IOException(Code) put public void put(LogEntry op) throws IOException(Code) reset public void reset() throws IOException(Code) rput public int rput(LogEntry op) throws IOException(Code) setRedoState public void setRedoState(LogEntry op, int state) throws IOException(Code) sync public void sync() throws IOException(Code) 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)