GroupByHash (presto-main 304 API)

All Known Implementing Classes:

BigintGroupByHash, MultiChannelGroupByHash, NoChannelGroupByHash
```
public interface GroupByHash
```

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`Work<?>`	`addPage(Page page)`
`void`	`appendValuesTo(int groupId, PageBuilder pageBuilder, int outputChannelOffset)`
`boolean`	`contains(int position, Page page, int[] hashChannels)`
`static GroupByHash`	`createGroupByHash(List<? extends Type> hashTypes, int[] hashChannels, Optional<Integer> inputHashChannel, int expectedSize, boolean processDictionary, JoinCompiler joinCompiler, UpdateMemory updateMemory)`
`static GroupByHash`	`createGroupByHash(Session session, List<? extends Type> hashTypes, int[] hashChannels, Optional<Integer> inputHashChannel, int expectedSize, JoinCompiler joinCompiler)`
`int`	`getCapacity()`
`long`	`getEstimatedSize()`
`double`	`getExpectedHashCollisions()`
`int`	`getGroupCount()`
`Work<GroupByIdBlock>`	`getGroupIds(Page page)`
`long`	`getHashCollisions()`
`long`	`getRawHash(int groupyId)`
`List<Type>`	`getTypes()`

Method Detail

createGroupByHash

static GroupByHash createGroupByHash(Session session,
                                     List<? extends Type> hashTypes,
                                     int[] hashChannels,
                                     Optional<Integer> inputHashChannel,
                                     int expectedSize,
                                     JoinCompiler joinCompiler)

createGroupByHash

static GroupByHash createGroupByHash(List<? extends Type> hashTypes,
                                     int[] hashChannels,
                                     Optional<Integer> inputHashChannel,
                                     int expectedSize,
                                     boolean processDictionary,
                                     JoinCompiler joinCompiler,
                                     UpdateMemory updateMemory)

getEstimatedSize
```
long getEstimatedSize()
```

getHashCollisions
```
long getHashCollisions()
```

getExpectedHashCollisions
```
double getExpectedHashCollisions()
```

getTypes
```
List<Type> getTypes()
```

getGroupCount
```
int getGroupCount()
```

appendValuesTo

void appendValuesTo(int groupId,
                    PageBuilder pageBuilder,
                    int outputChannelOffset)

addPage
```
Work<?> addPage(Page page)
```

getGroupIds

Work<GroupByIdBlock> getGroupIds(Page page)

contains

boolean contains(int position,
                 Page page,
                 int[] hashChannels)

getRawHash
```
long getRawHash(int groupyId)
```

getCapacity
```
int getCapacity()
```

Interface GroupByHash

Method Summary

Method Detail

createGroupByHash

createGroupByHash

getEstimatedSize

getHashCollisions

getExpectedHashCollisions

getTypes

getGroupCount

appendValuesTo

addPage

getGroupIds

contains

getRawHash

getCapacity