org.apache.solr.analytics.statistics

Class AbstractDelegatingStatsCollector

java.lang.Object

org.apache.solr.analytics.statistics.AbstractDelegatingStatsCollector

All Implemented Interfaces:

StatsCollector

Direct Known Subclasses:

MedianStatsCollector, PercentileStatsCollector, UniqueStatsCollector

public abstract class AbstractDelegatingStatsCollector
extends Object
implements StatsCollector

AbstractDelegationStatsCollector objects wrap other StatsCollectors. While they compute their own statistics they pass along all inputs and requests to the delegates as well.

Field Summary

Fields

Modifier and Type	Field and Description
protected StatsCollector	delegate
protected Set<String>	statsList

Constructor Summary

Constructors

Constructor and Description
AbstractDelegatingStatsCollector(StatsCollector delegate)

Method Summary

Methods

Modifier and Type	Method and Description
void	collect(int doc) Collect values from the value source and add to statistics.
StatsCollector	delegate()
FunctionValues	getFunction()
Set<String>	getStatsList()
MutableValue	getValue()
void	setNextReader(LeafReaderContext context)
String	valueSourceString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.solr.analytics.statistics.StatsCollector

compute, getStat

Field Detail

delegate

protected final StatsCollector delegate

statsList

protected final Set<String> statsList

Constructor Detail

AbstractDelegatingStatsCollector

public AbstractDelegatingStatsCollector(StatsCollector delegate)

Parameters:

delegate - The delegate computing statistics on the same set of values.

Method Detail

setNextReader

public void setNextReader(LeafReaderContext context)
                   throws IOException

Specified by:

setNextReader in interface StatsCollector

Parameters:

context - The context to read documents from.

Throws:

IOException - if setting next reader fails

delegate

public StatsCollector delegate()

getStatsList

public Set<String> getStatsList()

Specified by:

getStatsList in interface StatsCollector

Returns:

The set of statistics being computed by the stats collector.

getValue

public MutableValue getValue()

Specified by:

getValue in interface StatsCollector

getFunction

public FunctionValues getFunction()

Specified by:

getFunction in interface StatsCollector

collect

public void collect(int doc)

Description copied from interface: StatsCollector

Collect values from the value source and add to statistics.

Specified by:

collect in interface StatsCollector

Parameters:

doc - Document to collect from

valueSourceString

public String valueSourceString()

Specified by:

valueSourceString in interface StatsCollector

Returns:

The string representation of the value source.