# Class SumAggregation (3.1.0)

3.1.0 (latest) 2.40.0 2.37.0 2.36.0 2.34.0 2.33.3 2.32.3 2.31.4 2.30.0 2.29.1 2.28.2 2.27.1 2.26.4 2.25.2 2.24.3 2.23.0 2.22.0 2.21.3 2.20.2 2.19.2 2.18.5 2.17.6

    public class SumAggregation extends Aggregation

Represents an [Aggregation](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation) which returns sum of numerical values.

## Inheritance

[Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \> [Aggregation](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation) \> SumAggregation

## Inherited Members

[Aggregation.aggregationBuilder()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_aggregationBuilder__) [Aggregation.avg(String)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_avg_java_lang_String_) [Aggregation.count()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_count__) [Aggregation.getAlias()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_getAlias__) [Aggregation.sum(String)](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_sum_java_lang_String_) [Aggregation.toPb()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_toPb__) [Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) [Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) [Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) [Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) [Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) [Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) [Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) [Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) [Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) [Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) [Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)

## Constructors

### SumAggregation(String alias, String propertyReference)

    public SumAggregation(String alias, String propertyReference)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `alias` | `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` |
| `propertyReference` | `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` |

## Methods

### equals(Object o)

    public boolean equals(Object o)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `o` | `https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-)

### hashCode()

    public int hashCode()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--)

### toPb()

    public AggregationQuery.Aggregation toPb()

> [!WARNING]
> **Internal Only**: This feature is not stable for application use.

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.datastore.v1.AggregationQuery.Aggregation` |   |

**Overrides** [Aggregation.toPb()](https://docs.cloud.google.com/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_toPb__)