com.netflix.astyanax.recipes

Class ReverseIndexQuery<K,C,V>

java.lang.Object

com.netflix.astyanax.recipes.ReverseIndexQuery<K,C,V>

Type Parameters:

K - Key type for data table

C - Column name type for data table

V - Value type being indexed

public class ReverseIndexQuery<K,C,V>
extends java.lang.Object

Performs a search on a reverse index and fetches all the matching rows CFData:K C=V1 C=V2 CFIndex: V1:K

Data and Index column family

The CFData column family has key of type K and fields or columns of type C. Each column may have a different value type. The CFIndex column family is a sorted index by one of the value types V. The column names in the reverse index are a composite of the value type V and the CFData rowkey type K (V:K).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ReverseIndexQuery.IndexEntryCallback<K,V>
class	ReverseIndexQuery.Task

Constructor Summary

Constructors

Constructor and Description
ReverseIndexQuery(com.netflix.astyanax.Keyspace ks, com.netflix.astyanax.model.ColumnFamily<K,C> cfData, com.netflix.astyanax.model.ColumnFamily<java.nio.ByteBuffer,java.nio.ByteBuffer> indexCf, com.netflix.astyanax.Serializer<V> valSerializer)
ReverseIndexQuery(com.netflix.astyanax.Keyspace ks, com.netflix.astyanax.model.ColumnFamily<K,C> cfData, java.lang.String indexCf, com.netflix.astyanax.Serializer<V> valSerializer)

Method Summary

Modifier and Type	Method and Description
void	execute()
ReverseIndexQuery<K,C,V>	forEach(com.google.common.base.Function<com.netflix.astyanax.model.Row<K,C>,java.lang.Void> callback)
ReverseIndexQuery<K,C,V>	forEachIndexEntry(ReverseIndexQuery.IndexEntryCallback<K,V> callback)
ReverseIndexQuery<K,C,V>	fromIndexValue(V startValue)
static <K,C,V> ReverseIndexQuery<K,C,V>	newQuery(com.netflix.astyanax.Keyspace ks, com.netflix.astyanax.model.ColumnFamily<K,C> cf, com.netflix.astyanax.model.ColumnFamily<java.nio.ByteBuffer,java.nio.ByteBuffer> indexCf, com.netflix.astyanax.Serializer<V> valSerializer)
static <K,C,V> ReverseIndexQuery<K,C,V>	newQuery(com.netflix.astyanax.Keyspace ks, com.netflix.astyanax.model.ColumnFamily<K,C> cf, java.lang.String indexCf, com.netflix.astyanax.Serializer<V> valSerializer)
ReverseIndexQuery<K,C,V>	setShardBlockSize(int size) Set the number shard keys to fetch for the first query
ReverseIndexQuery<K,C,V>	setShardNextPageSize(int size)
ReverseIndexQuery<K,C,V>	setShardPageSize(int size) Set the number columns to read from each shard when paginating.
ReverseIndexQuery<K,C,V>	toIndexValue(V endValue)
ReverseIndexQuery<K,C,V>	useExecutor(java.util.concurrent.ExecutorService executor)
ReverseIndexQuery<K,C,V>	useRetryPolicy(com.netflix.astyanax.retry.RetryPolicy retry)
ReverseIndexQuery<K,C,V>	withColumnSlice(java.util.Collection<C> columnSlice)
ReverseIndexQuery<K,C,V>	withConsistencyLevel(com.netflix.astyanax.model.ConsistencyLevel consistencyLevel)
ReverseIndexQuery<K,C,V>	withIndexShards(java.util.Collection<java.nio.ByteBuffer> shardKeys)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReverseIndexQuery

public ReverseIndexQuery(com.netflix.astyanax.Keyspace ks,
                         com.netflix.astyanax.model.ColumnFamily<K,C> cfData,
                         java.lang.String indexCf,
                         com.netflix.astyanax.Serializer<V> valSerializer)

ReverseIndexQuery

public ReverseIndexQuery(com.netflix.astyanax.Keyspace ks,
                         com.netflix.astyanax.model.ColumnFamily<K,C> cfData,
                         com.netflix.astyanax.model.ColumnFamily<java.nio.ByteBuffer,java.nio.ByteBuffer> indexCf,
                         com.netflix.astyanax.Serializer<V> valSerializer)

Method Detail

newQuery

public static <K,C,V> ReverseIndexQuery<K,C,V> newQuery(com.netflix.astyanax.Keyspace ks,
                                                        com.netflix.astyanax.model.ColumnFamily<K,C> cf,
                                                        java.lang.String indexCf,
                                                        com.netflix.astyanax.Serializer<V> valSerializer)

newQuery

public static <K,C,V> ReverseIndexQuery<K,C,V> newQuery(com.netflix.astyanax.Keyspace ks,
                                                        com.netflix.astyanax.model.ColumnFamily<K,C> cf,
                                                        com.netflix.astyanax.model.ColumnFamily<java.nio.ByteBuffer,java.nio.ByteBuffer> indexCf,
                                                        com.netflix.astyanax.Serializer<V> valSerializer)

useExecutor

public ReverseIndexQuery<K,C,V> useExecutor(java.util.concurrent.ExecutorService executor)

useRetryPolicy

public ReverseIndexQuery<K,C,V> useRetryPolicy(com.netflix.astyanax.retry.RetryPolicy retry)

withIndexShards

public ReverseIndexQuery<K,C,V> withIndexShards(java.util.Collection<java.nio.ByteBuffer> shardKeys)

fromIndexValue

public ReverseIndexQuery<K,C,V> fromIndexValue(V startValue)

toIndexValue

public ReverseIndexQuery<K,C,V> toIndexValue(V endValue)

forEach

public ReverseIndexQuery<K,C,V> forEach(com.google.common.base.Function<com.netflix.astyanax.model.Row<K,C>,java.lang.Void> callback)

forEachIndexEntry

public ReverseIndexQuery<K,C,V> forEachIndexEntry(ReverseIndexQuery.IndexEntryCallback<K,V> callback)

withConsistencyLevel

public ReverseIndexQuery<K,C,V> withConsistencyLevel(com.netflix.astyanax.model.ConsistencyLevel consistencyLevel)

withColumnSlice

public ReverseIndexQuery<K,C,V> withColumnSlice(java.util.Collection<C> columnSlice)

setShardBlockSize

public ReverseIndexQuery<K,C,V> setShardBlockSize(int size)

Set the number shard keys to fetch for the first query

Parameters:

size -

Returns:

setShardPageSize

public ReverseIndexQuery<K,C,V> setShardPageSize(int size)

Set the number columns to read from each shard when paginating.

Parameters:

size -

Returns:

setShardNextPageSize

public ReverseIndexQuery<K,C,V> setShardNextPageSize(int size)

execute

public void execute()