com.netflix.spectator.atlas.impl

Class DataExpr.DropRollup

java.lang.Object

com.netflix.spectator.atlas.impl.DataExpr.DropRollup

All Implemented Interfaces:

DataExpr

Enclosing interface:

DataExpr

public static final class DataExpr.DropRollup
extends Object
implements DataExpr

Rollup inputs by dropping the specified keys. This is typically used with a rollup config to reduce the amount of data going out. If a whitelist of keys is needed, then see DataExpr.KeepRollup.

Nested Class Summary

Nested classes/interfaces inherited from interface com.netflix.spectator.atlas.impl.DataExpr

DataExpr.AggregateFunction, DataExpr.Aggregator, DataExpr.All, DataExpr.Count, DataExpr.DropRollup, DataExpr.GroupBy, DataExpr.KeepRollup, DataExpr.Max, DataExpr.Min, DataExpr.Sum

Method Summary

Modifier and Type	Method and Description
DataExpr.Aggregator	aggregator(Map<String,String> tags, boolean shouldCheckQuery) Get an aggregator that can be incrementally fed values.
boolean	equals(Object obj)
int	hashCode()
boolean	isAccumulating() Returns true if the aggregation type is accumulating (sum or count).
boolean	isCount() Returns true if the aggregation type is count.
Query	query() Query for selecting the input measurements that should be aggregated.
Map<String,String>	resultTags(Map<String,String> tags) Get the set of result tags for a particular datapoint.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.netflix.spectator.atlas.impl.DataExpr

aggregator, eval

Method Detail

query

public Query query()

Description copied from interface: DataExpr

Query for selecting the input measurements that should be aggregated.

Specified by:

query in interface DataExpr

isAccumulating

public boolean isAccumulating()

Description copied from interface: DataExpr

Returns true if the aggregation type is accumulating (sum or count).

Specified by:

isAccumulating in interface DataExpr

isCount

public boolean isCount()

Description copied from interface: DataExpr

Returns true if the aggregation type is count.

Specified by:

isCount in interface DataExpr

resultTags

public Map<String,String> resultTags(Map<String,String> tags)

Description copied from interface: DataExpr

Get the set of result tags for a particular datapoint. The result tags will include everything with an exact match in the query clause and keys used in a group by clause.

Specified by:

resultTags in interface DataExpr

Parameters:

tags - Full set of tags for a datapoint.

Returns:

Result tags for a datapoint.

aggregator

public DataExpr.Aggregator aggregator(Map<String,String> tags,
                                      boolean shouldCheckQuery)

Description copied from interface: DataExpr

Get an aggregator that can be incrementally fed values. See DataExpr.eval(Iterable) if you already have the completed list of values.

Specified by:

aggregator in interface DataExpr

Parameters:

tags - The set of tags for the final aggregate.

shouldCheckQuery - If true, then values will be checked against the query before applying to the aggregate. Otherwise, it is assumed that the user has already verified that the datapoint matches before passing it in.

Returns:

Aggregator for this data expression.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object