org.apache.accumulo.examples.wikisearch.iterator
Class TextIndexCombiner
java.lang.Object
org.apache.accumulo.core.iterators.WrappingIterator
org.apache.accumulo.core.iterators.Combiner
org.apache.accumulo.core.iterators.TypedValueCombiner<TermWeight.Info>
org.apache.accumulo.examples.wikisearch.iterator.TextIndexCombiner
- All Implemented Interfaces:
- OptionDescriber, SortedKeyValueIterator<Key,Value>
public class TextIndexCombiner
- extends TypedValueCombiner<TermWeight.Info>
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TERMWEIGHT_INFO_ENCODER
public static final TypedValueCombiner.Encoder<TermWeight.Info> TERMWEIGHT_INFO_ENCODER
TextIndexCombiner
public TextIndexCombiner()
typedReduce
public TermWeight.Info typedReduce(Key key,
Iterator<TermWeight.Info> iter)
- Description copied from class:
TypedValueCombiner
- Reduces a list of V into a single V.
- Specified by:
typedReduce
in class TypedValueCombiner<TermWeight.Info>
- Parameters:
key
- The most recent version of the Key being reduced.iter
- An iterator over the V for different versions of the key.
- Returns:
- The combined V.
init
public void init(SortedKeyValueIterator<Key,Value> source,
Map<String,String> options,
IteratorEnvironment env)
throws IOException
- Description copied from interface:
SortedKeyValueIterator
- Initializes the iterator. Data should not be read from the source in this method.
- Specified by:
init
in interface SortedKeyValueIterator<Key,Value>
- Overrides:
init
in class TypedValueCombiner<TermWeight.Info>
- Parameters:
source
- SortedKeyValueIterator source to read data from.options
- Map map of string option names to option values.env
- IteratorEnvironment environment in which iterator is being run.
- Throws:
IOException
- unused.
Copyright © 2012 The Apache Software Foundation. All Rights Reserved.