Packages

package root

Definition Classes: root

package com

Definition Classes: root

package here

Definition Classes: com

package platform

Definition Classes: here

package data

Definition Classes: platform

package processing

This package provides the Data Processing Library for building distributed data processing applications.

A Runner both implements the interface with the environment for an application to run, and starts the application. The application, in turn, is driven by a Driver, that controls and performs the distributed processing.

Choose a Runner best suited for the environment where the application runs.

The Driver performs one of more tasks which read layers from input catalogs and write to one or more layers of an output catalog.

The main entry point in the processing library is the com.here.platform.data.processing.driver.DriverBuilder class where you can add different kinds of tasks to the driver. The driver runs the tasks, and commits the final results to the output catalog.

Tasks are implemented using one or more compilers.

The simplest compiler is the direct compiler which maps each input tile to N output tiles. The application needs to define com.here.platform.data.processing.compiler.Direct1ToNCompiler.

Other more complex compilation patterns are based on some kind of dependency tracking between input partitions and output partitions.

The processing Library supports the following patterns:

- com.here.platform.data.processing.compiler.NonIncrementalCompiler: non-incremental compilation only - com.here.platform.data.processing.compiler.DepCompiler: non-incremental dependency calculation and incremental compilation - com.here.platform.data.processing.compiler.IncrementalDepCompiler: incremental dependency calculation and compilation - com.here.platform.data.processing.compiler.Direct1ToNCompiler: incremental compilation where every output tile depends only on one input tile, and this mapping is independent from tile content - com.here.platform.data.processing.compiler.DirectMToNCompiler: incremental compilation where every output tile depends on multiple input tiles, and this mapping is independent from tile content - com.here.platform.data.processing.compiler.MapGroupCompiler: incremental compilation where every output tile can depend on multiple input tiles, and this mapping depend on the tile content - com.here.platform.data.processing.compiler.RefTreeCompiler: fully-managed two phases incremental compilation that can resolve references between input partitions. Input/Output dependency management is implemented and the developer doesn't need to provide this logic

The application's main object normally mixes in the a runner trait (like PipelineRunner) to setup the Driver, and interfaces with the environment where the application is run. See the Main classes in the example compilers for more details.

com.here.platform.data.processing.catalog, com.here.platform.data.processing.blobstore, and com.here.platform.data.processing.publisher contain utilities for accessing catalogs and payloads in a Spark-friendly way, providing an RDD-based abstraction over data and metadata. These classes are used by the processing library, but can also be used independently.

Definition Classes: data

package driver

Definition Classes: processing

package deltasets

Definition Classes: driver

package transformations

Definition Classes: deltasets

BaseSet

BaseSetIdAssigner

CanDetermine

CannotDetermine

Changes

DeltaContext

DeltaSet

DeltaSetConfig

Determine

KeyValues

Keys

ManyToMany

ManyToOne

NoChanges

OneToMany

OneToOne

PartMapperByLevel

PartitioningStrategy

PreservesPartitioning

PublishedPart

PublishedPartMapper

PublishedSet

PublishedSetLike

RequiresRepartitioning

ResolutionStrategy

Resolver

SomeChanges

StateManager

Transformations

com.here.platform.data.processing.driver.deltasets

Determine

Companion trait Determine

object Determine

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@native()
def reduce[A](toReduce: Iterable[Determine[A]]): Determine[Iterable[A]]
Given a collection of values that may be determined, returns a collection that is determined if and only if all values in the original collection are determined.
Given a collection of values that may be determined, returns a collection that is determined if and only if all values in the original collection are determined.
A
The type of the wrapped value.
toReduce
The collection of possibly determined values.
returns
The resulting, possibly determined collection.
final def synchronized[T0](arg0: ⇒ T0): T0

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final def wait(): Unit

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def zip[A1, A2, A3, A4](a1: Determine[A1], a2: Determine[A2], a3: Determine[A3], a4: Determine[A4]): Determine[(A1, A2, A3, A4)]
Given a four values that may be determined, returns a tuple that is determined if and only if all given values are determined.
Given a four values that may be determined, returns a tuple that is determined if and only if all given values are determined.
A1
The type of the first wrapped value.
A2
The type of the second wrapped value.
A3
The type of the third wrapped value.
A4
The type of the fourth wrapped value.
a1
The first of the possibly determined values.
a2
The first of the possibly determined values.
a3
The first of the possibly determined values.
a4
The first of the possibly determined values.
returns
The resulting, possibly determined tuple of the three values.
def zip[A1, A2, A3](a1: Determine[A1], a2: Determine[A2], a3: Determine[A3]): Determine[(A1, A2, A3)]
Given a three values that may be determined, returns a tuple that is determined if and only if all given values are determined.
Given a three values that may be determined, returns a tuple that is determined if and only if all given values are determined.
A1
The type of the first wrapped value.
A2
The type of the second wrapped value.
A3
The type of the third wrapped value.
a1
The first of the possibly determined values.
a2
The first of the possibly determined values.
a3
The first of the possibly determined values.
returns
The resulting, possibly determined tuple of the three values.

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Determine

Companion trait Determine

object Determine

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Determine 

Companion trait Determine

object Determine

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Determine