ccvisu
Class ReaderDataGraphCVS

java.lang.Object
  ccvisu.ReaderData
      ccvisu.ReaderDataGraph
          ccvisu.ReaderDataGraphCVS

public class ReaderDataGraphCVS
extends ReaderDataGraph

Reader for CVS log files. Extracts the co-change graph from the CVS log info.

Version:

$Revision: 1.35 $; $Date: 2007/12/15 02:03:35 $

Author:

Dirk Beyer

Nested Class Summary

private class

ReaderDataGraphCVS.Revision Represents a CVS revision entry (an abstraction of it).

Field Summary

private boolean	sliding
private int	timeWindow Time-window constant for transaction recovery, in milli-seconds.

Fields inherited from class ccvisu.ReaderDataGraph

endl

Fields inherited from class ccvisu.ReaderData

mIn, mVerbosity

Constructor Summary

ReaderDataGraphCVS(java.io.BufferedReader in, Options.Verbosity pVerbosity, int timeWindow, boolean sliding)
Constructor.

Method Summary

private java.lang.Long	parseDate(java.lang.String dateStr) Parses the date entry.
private java.util.List<ReaderDataGraphCVS.Revision>	readRevisionList() Parses the CVS log data and extracts revisions.
Relation	readTuples() Reads the edges of a graph in CVS log format from stream reader in, and stores them in a list (of GraphEdgeString elements).
private java.util.SortedMap<java.lang.Long,java.util.Collection<java.util.SortedSet<ReaderDataGraphCVS.Revision>>>	recoverTransactions(java.util.List<ReaderDataGraphCVS.Revision> revisionList) Recovers the change transactions for the co-change graph from the revision information, i.e., it assigns the transaction ids for the revisions.

Methods inherited from class ccvisu.ReaderDataGraph

read

Methods inherited from class ccvisu.ReaderData

mkExtensionFileFilter, mkExtensionFileFilter, mkExtensionFileFilter, readEntry

Methods inherited from class java.lang.Object

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

Field Detail

timeWindow

private final int timeWindow

Time-window constant for transaction recovery, in milli-seconds.

sliding

private final boolean sliding

Constructor Detail

ReaderDataGraphCVS

public ReaderDataGraphCVS(java.io.BufferedReader in,
                          Options.Verbosity pVerbosity,
                          int timeWindow,
                          boolean sliding)

Constructor.

Parameters:

in - Stream reader object.

timeWindow - Time window for transaction recovery, in milli-seconds (default: 180'000).

sliding - sliding or fixed time window

Method Detail

readTuples

public Relation readTuples()

Reads the edges of a graph in CVS log format from stream reader in, and stores them in a list (of GraphEdgeString elements).

Specified by:

readTuples in class ReaderDataGraph

Returns:

List of string edges.

parseDate

private java.lang.Long parseDate(java.lang.String dateStr)

Parses the date entry.

Parameters:

dateStr - The CVS date entry string.

Returns:

Long value of the date, or null if dateStr is not a valid date entry.

readRevisionList

private java.util.List<ReaderDataGraphCVS.Revision> readRevisionList()

Parses the CVS log data and extracts revisions.

Returns:

List of revisions.

recoverTransactions

private java.util.SortedMap<java.lang.Long,java.util.Collection<java.util.SortedSet<ReaderDataGraphCVS.Revision>>> recoverTransactions(java.util.List<ReaderDataGraphCVS.Revision> revisionList)

Recovers the change transactions for the co-change graph from the revision information, i.e., it assigns the transaction ids for the revisions.

Parameters:

revisionList - is a list of revisions.

Returns:

Sorted map that maps timestamps to collections of transactions, where transactions are sets of revisions.