org.apache.accumulo.core.iterators.system
Class ColumnQualifierFilter

java.lang.Object
  org.apache.accumulo.core.iterators.WrappingIterator
      org.apache.accumulo.core.iterators.Filter
          org.apache.accumulo.core.iterators.system.ColumnQualifierFilter

All Implemented Interfaces:

OptionDescriber, SortedKeyValueIterator<Key,Value>

public class ColumnQualifierFilter
extends Filter

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.accumulo.core.iterators.OptionDescriber

OptionDescriber.IteratorOptions

Constructor Summary

ColumnQualifierFilter()

ColumnQualifierFilter(SortedKeyValueIterator<Key,Value> iterator, HashSet<ByteSequence> columnFamilies, HashMap<ByteSequence,HashSet<ByteSequence>> columnsQualifiers, boolean scanColumns)

ColumnQualifierFilter(SortedKeyValueIterator<Key,Value> iterator, HashSet<Column> columns)

Method Summary

boolean	accept(Key key, Value v)
SortedKeyValueIterator<Key,Value>	deepCopy(IteratorEnvironment env) Creates a deep copy of this iterator as though seek had not yet been called.
void	init(HashSet<Column> columns)

Methods inherited from class org.apache.accumulo.core.iterators.Filter

describeOptions, findTop, init, next, seek, setNegate, validateOptions

Methods inherited from class org.apache.accumulo.core.iterators.WrappingIterator

getSource, getTopKey, getTopValue, hasTop, setSource

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnQualifierFilter

public ColumnQualifierFilter()

ColumnQualifierFilter

public ColumnQualifierFilter(SortedKeyValueIterator<Key,Value> iterator,
                             HashSet<Column> columns)

ColumnQualifierFilter

public ColumnQualifierFilter(SortedKeyValueIterator<Key,Value> iterator,
                             HashSet<ByteSequence> columnFamilies,
                             HashMap<ByteSequence,HashSet<ByteSequence>> columnsQualifiers,
                             boolean scanColumns)

Method Detail

accept

public boolean accept(Key key,
                      Value v)

Specified by:

accept in class Filter

Returns:

true if the key/value pair is accepted by the filter.

init

public void init(HashSet<Column> columns)

deepCopy

public SortedKeyValueIterator<Key,Value> 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>

Overrides:

deepCopy in class Filter

Parameters:

env - IteratorEnvironment environment in which iterator is being run.

Returns:

SortedKeyValueIterator a copy of this iterator (with the same source and settings).