org.apache.accumulo.core.iterators.system
Class ColumnFamilySkippingIterator
java.lang.Object
org.apache.accumulo.core.iterators.WrappingIterator
org.apache.accumulo.core.iterators.SkippingIterator
org.apache.accumulo.core.iterators.system.ColumnFamilySkippingIterator
- All Implemented Interfaces:
- SortedKeyValueIterator<Key,Value>, InterruptibleIterator
- Direct Known Subclasses:
- FileCFSkippingIterator
public class ColumnFamilySkippingIterator
- extends SkippingIterator
- implements InterruptibleIterator
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
colFamSet
protected Set<ByteSequence> colFamSet
sortedColFams
protected TreeSet<ByteSequence> sortedColFams
inclusive
protected boolean inclusive
range
protected Range range
ColumnFamilySkippingIterator
public ColumnFamilySkippingIterator(SortedKeyValueIterator<Key,Value> source)
ColumnFamilySkippingIterator
protected ColumnFamilySkippingIterator(SortedKeyValueIterator<Key,Value> source,
Set<ByteSequence> colFamSet,
boolean inclusive)
consume
protected void consume()
throws IOException
- Specified by:
consume in class SkippingIterator
- Throws:
IOException
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 WrappingIterator
- Parameters:
env - IteratorEnvironment environment in which iterator is being run.
- Returns:
- SortedKeyValueIterator a copy of this iterator (with the same source and settings).
seek
public void seek(Range range,
Collection<ByteSequence> columnFamilies,
boolean inclusive)
throws IOException
- Description copied from interface:
SortedKeyValueIterator
- Seeks to the first key in the Range, restricting the resulting K,V pairs to those with the specified columns. An iterator does not have to stop at the end
of the range. The whole range is provided so that iterators can make optimizations.
- Specified by:
seek in interface SortedKeyValueIterator<Key,Value>- Overrides:
seek in class SkippingIterator
- Parameters:
range - Range of keys to iterate over.columnFamilies - Collection of column families to include or exclude.inclusive - boolean that indicates whether to include (true) or exclude (false) column families.
- Throws:
IOException - if an I/O error occurs.
setInterruptFlag
public void setInterruptFlag(AtomicBoolean flag)
- Specified by:
setInterruptFlag in interface InterruptibleIterator
Copyright © 2012 The Apache Software Foundation. All Rights Reserved.