org.apache.accumulo.core.iterators
Class CountingIterator
java.lang.Object
org.apache.accumulo.core.iterators.WrappingIterator
org.apache.accumulo.core.iterators.CountingIterator
- All Implemented Interfaces:
- SortedKeyValueIterator<Key,Value>
public class CountingIterator
- extends WrappingIterator
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
CountingIterator
public CountingIterator(SortedKeyValueIterator<Key,Value> source)
deepCopy
public CountingIterator deepCopy(IteratorEnvironment env)
- Description copied from interface:
SortedKeyValueIterator
- Creates a deep copy of this iterator as though seek had not yet been called.
init should be called on an iterator before deepCopy is called.
init should not need to be called on the copy that is returned by deepCopy; that is,
when necessary init should be called in the deepCopy method on the iterator it returns.
The behavior is unspecified if init is called after deepCopy either on the original or the copy.
- Specified by:
deepCopy
in interface SortedKeyValueIterator<Key,Value>
- Specified by:
deepCopy
in class WrappingIterator
- Parameters:
env
- IteratorEnvironment environment in which iterator is being run.
- Returns:
- SortedKeyValueIterator a copy of this iterator (with the same source and settings).
init
public void init(SortedKeyValueIterator<Key,Value> source,
java.util.Map<java.lang.String,java.lang.String> options,
IteratorEnvironment env)
- 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 WrappingIterator
- 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.
next
public void next()
throws java.io.IOException
- Description copied from interface:
SortedKeyValueIterator
- Advances to the next K,V pair.
- Specified by:
next
in interface SortedKeyValueIterator<Key,Value>
- Overrides:
next
in class WrappingIterator
- Throws:
java.io.IOException
- if an I/O error occurs.
getCount
public long getCount()
Copyright © 2012 The Apache Software Foundation. All Rights Reserved.