org.calrissian.accumulorecipes.lastn.iterator

Class EntryIterator

java.lang.Object

org.apache.accumulo.core.iterators.WrappingIterator

org.calrissian.accumulorecipes.lastn.iterator.EntryIterator

All Implemented Interfaces:

org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value>

public class EntryIterator
extends org.apache.accumulo.core.iterators.WrappingIterator

An iterator to return StoreEntry objects serialized to JSON so that grouping can be done server side instead of client side.

Field Summary

Fields

Modifier and Type	Field and Description
static String	TYPE_REGISTRY

Constructor Summary

Constructors

Constructor and Description
EntryIterator()

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.accumulo.core.data.Value	getTopValue() For each index row in the lastN store, grab the associated getTuples (further down in the tablet) and construct the entry to be returned.
void	init(org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value> source, Map<String,String> options, org.apache.accumulo.core.iterators.IteratorEnvironment env)
static void	setTypeRegistry(org.apache.accumulo.core.client.IteratorSetting setting, org.calrissian.mango.types.TypeRegistry<String> registry)

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

deepCopy, getSource, getTopKey, hasTop, next, seek, setSource

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_REGISTRY

public static final String TYPE_REGISTRY

See Also:

Constant Field Values

Constructor Detail

EntryIterator

public EntryIterator()

Method Detail

init

public void init(org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value> source,
        Map<String,String> options,
        org.apache.accumulo.core.iterators.IteratorEnvironment env)
          throws IOException

Specified by:

init in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value>

Overrides:

init in class org.apache.accumulo.core.iterators.WrappingIterator

Throws:

IOException

setTypeRegistry

public static void setTypeRegistry(org.apache.accumulo.core.client.IteratorSetting setting,
                   org.calrissian.mango.types.TypeRegistry<String> registry)

getTopValue

public org.apache.accumulo.core.data.Value getTopValue()

For each index row in the lastN store, grab the associated getTuples (further down in the tablet) and construct the entry to be returned.

Specified by:

getTopValue in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,org.apache.accumulo.core.data.Value>

Overrides:

getTopValue in class org.apache.accumulo.core.iterators.WrappingIterator

Returns: