net.di2e.ecdr.federation

Class NormalizingSortedFederationStrategy

Show UML class diagram

java.lang.Object

net.di2e.ecdr.federation.AbstractFederationStrategy

net.di2e.ecdr.federation.NormalizingSortedFederationStrategy

All Implemented Interfaces:

ddf.catalog.federation.FederationStrategy, NormalizingFederationStrategy

public class NormalizingSortedFederationStrategy
extends AbstractFederationStrategy

This class represents a FederationStrategy based on sorting Metacards. The sorting is based on the Query's SortBy propertyName. The possible sorting values are Metacard.EFFECTIVE, Result.TEMPORAL, Result.DISTANCE, or Result.RELEVANCE . The supported ordering includes SortOrder.DESCENDING and SortOrder.ASCENDING. For this class to function properly a sort value and sort order must be provided.

See Also:

Metacard, Query, SortBy

Field Summary

Fields

Modifier and Type	Field and Description
protected static Comparator<ddf.catalog.data.Result>	DEFAULT_COMPARATOR The default comparator for sorting by Result.RELEVANCE, SortOrder.DESCENDING

Constructor Summary

Constructors

Constructor and Description
NormalizingSortedFederationStrategy(ExecutorService queryExecutorService, List<ddf.catalog.plugin.PreFederatedQueryPlugin> preQuery, List<ddf.catalog.plugin.PostFederatedQueryPlugin> postQuery, net.di2e.ecdr.libs.result.relevance.RelevanceNormalizer normalizer) Instantiates a SortedFederationStrategy with the provided ExecutorService.

Method Summary

Methods

Modifier and Type	Method and Description
protected Runnable	createMonitor(ExecutorService pool, Map<ddf.catalog.source.Source,Future<ddf.catalog.operation.SourceResponse>> futures, ddf.catalog.operation.impl.QueryResponseImpl returnResults, ddf.catalog.operation.Query query) Creates the monitor for federated queries.
void	setNormalizeResults(boolean normalize)

Methods inherited from class net.di2e.ecdr.federation.AbstractFederationStrategy

federate, setMaxStartIndex

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_COMPARATOR

protected static final Comparator<ddf.catalog.data.Result> DEFAULT_COMPARATOR

The default comparator for sorting by Result.RELEVANCE, SortOrder.DESCENDING

Constructor Detail

NormalizingSortedFederationStrategy

public NormalizingSortedFederationStrategy(ExecutorService queryExecutorService,
                                   List<ddf.catalog.plugin.PreFederatedQueryPlugin> preQuery,
                                   List<ddf.catalog.plugin.PostFederatedQueryPlugin> postQuery,
                                   net.di2e.ecdr.libs.result.relevance.RelevanceNormalizer normalizer)

Instantiates a SortedFederationStrategy with the provided ExecutorService.

Parameters:

queryExecutorService - the ExecutorService for queries

Method Detail

createMonitor

protected Runnable createMonitor(ExecutorService pool,
                     Map<ddf.catalog.source.Source,Future<ddf.catalog.operation.SourceResponse>> futures,
                     ddf.catalog.operation.impl.QueryResponseImpl returnResults,
                     ddf.catalog.operation.Query query)

Description copied from class: AbstractFederationStrategy

Creates the monitor for federated queries.

Specified by:

createMonitor in class AbstractFederationStrategy

returnResults - the query results

Returns:

the Runnable

setNormalizeResults

public void setNormalizeResults(boolean normalize)