checkpointer.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<DL>
<DT><B>Parameters:</B><DD><CODE>cc</CODE> - CrawlController instance thats hosting this Checkpointer.<DD><CODE>checkpointDir</CODE> - Where to store checkpoint.</DL>
</DL>
<HR>

<A NAME="Checkpointer(org.archive.crawler.framework.CrawlController, java.lang.String)"><!-- --></A><H3>
Checkpointer</H3>
<PRE>
public <B>Checkpointer</B>(<A HREF="../../../../org/archive/crawler/framework/CrawlController.html" title="class in org.archive.crawler.framework">CrawlController</A>&nbsp;cc,
                    java.lang.String&nbsp;prefix)</PRE>
<DL>
<DD>Create a new CheckpointContext with the given store directory
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>cc</CODE> - CrawlController instance thats hosting this Checkpointer.<DD><CODE>prefix</CODE> - Prefix for checkpoint label.</DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TH>
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<A NAME="initialize(org.archive.crawler.framework.CrawlController, java.lang.String)"><!-- --></A><H3>
initialize</H3>
<PRE>
protected void <B>initialize</B>(<A HREF="../../../../org/archive/crawler/framework/CrawlController.html" title="class in org.archive.crawler.framework">CrawlController</A>&nbsp;cc,
                          java.lang.String&nbsp;prefix)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="cleanup()"><!-- --></A><H3>
cleanup</H3>
<PRE>
void <B>cleanup</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getNextCheckpoint()"><!-- --></A><H3>
getNextCheckpoint</H3>
<PRE>
public int <B>getNextCheckpoint</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Returns the nextCheckpoint index.</DL>
</DD>
</DL>
<HR>

<A NAME="checkpoint()"><!-- --></A><H3>
checkpoint</H3>
<PRE>
public void <B>checkpoint</B>()</PRE>
<DL>
<DD>Run a checkpoint of the crawler.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="createCheckpointInProgressDirectory()"><!-- --></A><H3>
createCheckpointInProgressDirectory</H3>
<PRE>
protected java.io.File <B>createCheckpointInProgressDirectory</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="clearCheckpointInProgressDirectory()"><!-- --></A><H3>
clearCheckpointInProgressDirectory</H3>
<PRE>
protected void <B>clearCheckpointInProgressDirectory</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getController()"><!-- --></A><H3>
getController</H3>
<PRE>
protected <A HREF="../../../../org/archive/crawler/framework/CrawlController.html" title="class in org.archive.crawler.framework">CrawlController</A> <B>getController</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getNextCheckpointName()"><!-- --></A><H3>
getNextCheckpointName</H3>
<PRE>
public java.lang.String <B>getNextCheckpointName</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>next checkpoint name (zero-padding string).</DL>
</DD>
</DL>
<HR>

<A NAME="formatCheckpointName(java.lang.String, int)"><!-- --></A><H3>
formatCheckpointName</H3>
<PRE>
public static java.lang.String <B>formatCheckpointName</B>(java.lang.String&nbsp;prefix,
                                                    int&nbsp;index)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="writeValidity()"><!-- --></A><H3>
writeValidity</H3>
<PRE>
protected void <B>writeValidity</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getCheckpointInProgressDirectory()"><!-- --></A><H3>
getCheckpointInProgressDirectory</H3>
<PRE>
public java.io.File <B>getCheckpointInProgressDirectory</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Checkpoint directory. Name of the directory is the name of this
 current checkpoint.  Null if no checkpoint in progress.</DL>
</DD>
</DL>
<HR>

<A NAME="isCheckpointing()"><!-- --></A><H3>
isCheckpointing</H3>
<PRE>
public boolean <B>isCheckpointing</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>True if a checkpoint is in progress.</DL>
</DD>
</DL>
<HR>

<A NAME="checkpointFailed(java.lang.Exception)"><!-- --></A><H3>
checkpointFailed</H3>
<PRE>
protected void <B>checkpointFailed</B>(java.lang.Exception&nbsp;e)</PRE>
<DL>
<DD>Note that a checkpoint failed
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>e</CODE> - Exception checkpoint failed on.</DL>
</DD>
</DL>
<HR>

<A NAME="checkpointFailed(java.lang.String)"><!-- --></A><H3>
checkpointFailed</H3>
<PRE>
protected void <B>checkpointFailed</B>(java.lang.String&nbsp;message)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="checkpointFailed()"><!-- --></A><H3>
checkpointFailed</H3>
<PRE>
protected void <B>checkpointFailed</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="isCheckpointFailed()"><!-- --></A><H3>
isCheckpointFailed</H3>
<PRE>
public boolean <B>isCheckpointFailed</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>True if current/last checkpoint failed.</DL>
</DD>
</DL>
<HR>

<A NAME="isAtBeginning()"><!-- --></A><H3>
isAtBeginning</H3>
<PRE>
public boolean <B>isAtBeginning</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Return whether this context is at a new crawl, never-
 checkpointed state.</DL>
</DD>
</DL>
<HR>

<A NAME="recover(org.archive.crawler.framework.CrawlController)"><!-- --></A><H3>
recover</H3>
<PRE>
public void <B>recover</B>(<A HREF="../../../../org/archive/crawler/framework/CrawlController.html" title="class in org.archive.crawler.framework">CrawlController</A>&nbsp;cc)</PRE>
<DL>
<DD>Call when recovering from a checkpoint.
 Call this after instance has been revivifyied post-serialization to
 amend counters and directories that effect where checkpoints get stored
 from here on out.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>cc</CODE> - CrawlController instance.</DL>
</DD>
</DL>
<HR>

<A NAME="getPredecessorCheckpoints()"><!-- --></A><H3>
getPredecessorCheckpoints</H3>
<PRE>
public java.util.List <B>getPredecessorCheckpoints</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Returns the predecessorCheckpoints.</DL>
</DD>
</DL>
<HR>

<A NAME="isCheckpointErrors()"><!-- --></A><H3>
isCheckpointErrors</H3>
<PRE>
protected boolean <B>isCheckpointErrors</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setCheckpointErrors(boolean)"><!-- --></A><H3>
setCheckpointErrors</H3>
<PRE>
protected void <B>setCheckpointErrors</B>(boolean&nbsp;checkpointErrors)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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