Package org.apache.accumulo.core.iterators

Interface Summary

Interface	Description
IteratorEnvironment
OptionDescriber	The OptionDescriber interface allows you to set up iterator properties interactively in the accumulo shell.
SortedKeyValueIterator<K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable>	An iterator that supports iterating over key and value pairs.
TypedValueCombiner.Encoder<V>	An interface for translating from byte[] to V and back.
YieldingKeyValueIterator<K extends org.apache.hadoop.io.WritableComparable<?>,V extends org.apache.hadoop.io.Writable>	An iterator that supports iterating over key and value pairs, and supports yielding on a next or seek call.

Class Summary

Class	Description
AggregatingIterator	Deprecated. since 1.4, replaced by Combiner
ColumnFamilyCounter
Combiner	A SortedKeyValueIterator that combines the Values for different versions (timestamp) of a Key within a row into a single Value.
Combiner.ValueIterator	A Java Iterator that iterates over the Values for a given Key from a source SortedKeyValueIterator.
DebugIterator
DevNull	An iterator that is useful testing...
FamilyIntersectingIterator	Deprecated. since 1.4, replaced by IndexedDocIterator
Filter	A SortedKeyValueIterator that filters entries from its source iterator.
FirstEntryInRowIterator
GrepIterator	Deprecated. since 1.4, replaced by GrepIterator
IntersectingIterator	Deprecated. since 1.4, replaced by IntersectingIterator
IteratorAdapter
IteratorUtil
IteratorUtil.IterInfoComparator
LargeRowFilter	Deprecated. since 1.4, replaced by LargeRowFilter
LongCombiner	A TypedValueCombiner that translates each Value to a Long before reducing, then encodes the reduced Long back to a Value.
LongCombiner.FixedLenEncoder	An Encoder that uses an 8-byte encoding for Longs.
LongCombiner.StringEncoder	An Encoder that uses a String representation of Longs.
LongCombiner.VarLenEncoder	An Encoder that uses a variable-length encoding for Longs.
OptionDescriber.IteratorOptions
OrIterator	An iterator that provides a sorted-iteration of column qualifiers for a set of column families in a row.
OrIterator.TermSource
RowDeletingIterator	Deprecated. since 1.4, replaced by RowDeletingIterator
SkippingIterator	Every call to SkippingIterator.next() and SkippingIterator.seek(Range, Collection, boolean) calls the parent's implementation and then calls the implementation's SkippingIterator.consume().
SortedKeyIterator
SortedMapIterator	A simple iterator over a Java SortedMap Note that this class is intended as an in-memory replacement for RFile$Reader, so its behavior reflects the same assumptions; namely, that this iterator is not responsible for respecting the columnFamilies passed into seek().
TypedValueCombiner<V>	A Combiner that decodes each Value to type V before reducing, then encodes the result of typedReduce back to Value.
VersioningIterator	Deprecated. since 1.4, replaced by VersioningIterator
WholeRowIterator	Deprecated. since 1.4, replaced by WholeRowIterator
WrappingIterator	A convenience class for implementing iterators that select, but do not modify, entries read from a source iterator.
YieldCallback<K>	This callback handles the state of yielding within an iterator

Enum Summary

Enum	Description
IteratorUtil.IteratorScope	Even though this type is not in a public API package, its used by methods in the public API.
LongCombiner.Type

Exception Summary

Exception	Description
IterationInterruptedException
ValueFormatException	Exception used for TypedValueCombiner and it's Encoders decode() function