Package org.apache.solr.client.solrj.routing

Class AffinityReplicaListTransformerFactory

java.lang.Object

org.apache.solr.client.solrj.routing.AffinityReplicaListTransformerFactory

All Implemented Interfaces:

ReplicaListTransformerFactory

public class AffinityReplicaListTransformerFactory
extends Object
implements ReplicaListTransformerFactory

Factory for constructing an AffinityReplicaListTransformer that reorders replica routing preferences deterministically, based on request parameters.

Default names of params that contain the values by which routing is determined may be configured at the time of AffinityReplicaListTransformerFactory construction, and may be overridden by the config spec passed to getInstance(String, SolrParams, ReplicaListTransformerFactory)

If no defaultHashParam name is specified at time of factory construction, the routing dividend will be derived by hashing the String value of the CommonParams.Q param.

Constructor Summary

Constructors

Constructor	Description
AffinityReplicaListTransformerFactory()
AffinityReplicaListTransformerFactory(String defaultDividendParam, String defaultHashParam)
AffinityReplicaListTransformerFactory(NamedList<?> c)

Method Summary

Modifier and Type	Method	Description
ReplicaListTransformer	getInstance(String configSpec, SolrParams requestParams, ReplicaListTransformerFactory fallback)

Methods inherited from class java.lang.Object

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

Constructor Details

AffinityReplicaListTransformerFactory

public AffinityReplicaListTransformerFactory()

AffinityReplicaListTransformerFactory

public AffinityReplicaListTransformerFactory(String defaultDividendParam,
 String defaultHashParam)

AffinityReplicaListTransformerFactory

public AffinityReplicaListTransformerFactory(NamedList<?> c)

Method Details

getInstance

public ReplicaListTransformer getInstance(String configSpec,
 SolrParams requestParams,
 ReplicaListTransformerFactory fallback)

Specified by:

getInstance in interface ReplicaListTransformerFactory

Parameters:

configSpec - spec for dynamic configuration of ReplicaListTransformer

requestParams - the request parameters for which the ReplicaListTransformer is being generated

fallback - used to generate fallback value; the getInstance() method of the specified fallback must not return null; The fallback value itself may be null if this implementation is known to never return null (i.e., if fallback will never be needed)

Returns:

ReplicaListTransformer to be used for routing this request