Aggregates (grakn-graql 1.4.2 API)

java.lang.Object
- ai.grakn.graql.internal.query.aggregate.Aggregates

```
public class Aggregates
extends Object
```
Factory for making Aggregate implementations.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static Aggregate<Value>`	`count(Set<Var> vars)`
`static Aggregate<Value>`	`count(Var... vars)` Aggregate that counts results of a `Match`.
`static Aggregate<AnswerGroup<ConceptMap>>`	`group(Var varName)` Aggregate that groups results of a `Match` by variable name
`static <T extends Answer> Aggregate<AnswerGroup<T>>`	`group(Var varName, Aggregate<T> innerAggregate)` Aggregate that groups results of a `Match` by variable name, applying an aggregate to each group.
`static Aggregate<ConceptMap>`	`list()` An aggregate that changes `Match` results into a list.
`static Aggregate<Value>`	`max(Var varName)` Aggregate that finds maximum of a `Match`.
`static Aggregate<Value>`	`mean(Var varName)` Aggregate that finds mean of a `Match`.
`static Aggregate<Value>`	`median(Var varName)` Aggregate that finds median of a `Match`.
`static Aggregate<Value>`	`min(Var varName)` Aggregate that finds minimum of a `Match`.
`static Aggregate<Value>`	`std(Var varName)` Aggregate that finds the unbiased sample standard deviation of a `Match`
`static Aggregate<Value>`	`sum(Var varName)` Aggregate that sums results of a `Match`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

count

public static Aggregate<Value> count(Var... vars)

Aggregate that counts results of a Match.

count

public static Aggregate<Value> count(Set<Var> vars)

sum

public static Aggregate<Value> sum(Var varName)

Aggregate that sums results of a Match.

min

public static Aggregate<Value> min(Var varName)

Aggregate that finds minimum of a Match.

max

public static Aggregate<Value> max(Var varName)

Aggregate that finds maximum of a Match.

mean

public static Aggregate<Value> mean(Var varName)

Aggregate that finds mean of a Match.

median

public static Aggregate<Value> median(Var varName)

Aggregate that finds median of a Match.

std
```
public static Aggregate<Value> std(Var varName)
```
Aggregate that finds the unbiased sample standard deviation of a Match

list
```
public static Aggregate<ConceptMap> list()
```
An aggregate that changes Match results into a list.

group
```
public static Aggregate<AnswerGroup<ConceptMap>> group(Var varName)
```
Aggregate that groups results of a Match by variable name

Parameters:

varName - the variable name to group results by

group

public static <T extends Answer> Aggregate<AnswerGroup<T>> group(Var varName,
                                                                 Aggregate<T> innerAggregate)

Aggregate that groups results of a Match by variable name, applying an aggregate to each group.

Type Parameters:: T - the type of each group

Class Aggregates

Method Summary

Methods inherited from class java.lang.Object

Method Detail

count

count

sum

min

max

mean

median

std

list

group

group