org.supermind.crawl.util
Class LongPersister

java.lang.Object
  extended by org.supermind.crawl.util.MapFilePersister<java.lang.Long,org.apache.nutch.io.NullWritable>
      extended by org.supermind.crawl.util.LongPersister
Direct Known Subclasses:
MapFileScatterPurger
public class LongPersister
extends MapFilePersister<java.lang.Long,org.apache.nutch.io.NullWritable>

Saves Long values to a MapFile.

Field Summary
 
Fields inherited from class org.supermind.crawl.util.MapFilePersister
baseDir, buffer, bufferIdx, LOG, mapdir, mapdirFile, maxBufferSize, nfs, overwrite, reader
 
Constructor Summary
LongPersister()
           
 
Method Summary
 void add(long value)
           
 boolean contains(long value)
           
protected  org.apache.nutch.io.WritableComparator getKeyComparator()
          Get comparator for MapFile key class.
 org.apache.nutch.io.WritableComparable getKeyInstance(java.lang.Long aLong, boolean throwaway)
          Return a new instance of the key.
 java.util.Comparator<java.lang.Long> getTypeComparator()
          Get comparator for type.
 
Methods inherited from class org.supermind.crawl.util.MapFilePersister
add, close, flushToDisk, getValueInstance, init, setBaseDir, setMaxBufferSize, setNfs, setOverwrite
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

LongPersister

public LongPersister()
Method Detail

add

public void add(long value)
         throws java.io.IOException
Throws:
java.io.IOException

contains

public boolean contains(long value)
                 throws java.io.IOException
Throws:
java.io.IOException

getKeyComparator

protected org.apache.nutch.io.WritableComparator getKeyComparator()
Description copied from class: MapFilePersister
Get comparator for MapFile key class.

Specified by:
getKeyComparator in class MapFilePersister<java.lang.Long,org.apache.nutch.io.NullWritable>
Returns:

getKeyInstance

public org.apache.nutch.io.WritableComparable getKeyInstance(java.lang.Long aLong,
                                                             boolean throwaway)
Description copied from class: MapFilePersister
Return a new instance of the key.

Specified by:
getKeyInstance in class MapFilePersister<java.lang.Long,org.apache.nutch.io.NullWritable>
Returns:

getTypeComparator

public java.util.Comparator<java.lang.Long> getTypeComparator()
Description copied from class: MapFilePersister
Get comparator for type.

Specified by:
getTypeComparator in class MapFilePersister<java.lang.Long,org.apache.nutch.io.NullWritable>
Returns: