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 validation

Definition Classes: processing

object Transformations

Set of implicit transformations added to com.here.platform.data.processing.driver.deltasets.DeltaSets.

To enable them, you have to add an implicit com.here.platform.data.processing.driver.deltasets.DeltaContext in your scope.

Definition Classes: validation

BaseAggregateTransformation

GenericAggregateTransformation

GenericAggregatorMapper

HereTileAggregateTransformation

MetricsAssessment

MetricsSequenceAssessment

MultiPartBaseAggregateTransformation

MultiPartHereTileAggregateTransformation

SplitByLevel

com.here.platform.data.processing.validation.Transformations

GenericAggregatorMapper

final case class GenericAggregatorMapper(partitionsPerAggregatedPart: Seq[Int]) extends PublishedPartMapper with Product with Serializable

com.here.platform.data.processing.driver.deltasets.PublishedPartMapper to recursively aggregate generic partitions based on key hash codes.

partitionsPerAggregatedPart: Number of maximum partitions per publish part. It should be strictly monotonic decreasing and last part should contain one partition only.

Linear Supertypes

Product, Equals, PublishedPartMapper, Serializable, Serializable, AnyRef, Any

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GenericAggregatorMapper
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Instance Constructors

new GenericAggregatorMapper(partitionsPerAggregatedPart: Seq[Int])
partitionsPerAggregatedPart
Number of maximum partitions per publish part. It should be strictly monotonic decreasing and last part should contain one partition only.

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def ancestor(name: Generic): Generic
Returns the partition name into which the input partition name should be aggregated.
Returns the partition name into which the input partition name should be aggregated.
name
The input un-aggregated partition name.
returns
The upper level partition name.
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def finalize(): Unit

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
Annotations
@native()
final def getPartForKey(key: Key): Int
Returns the part number for a key, as a number from 0 to numParts - 1.
Returns the part number for a key, as a number from 0 to numParts - 1.

Definition Classes
PublishedPartMapper
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
Annotations
@native()
final def notifyAll(): Unit

Definition Classes
AnyRef
Annotations
@native()
val numParts: Int
The number of parts.
The number of parts.

Definition Classes
GenericAggregatorMapper → PublishedPartMapper
def partForKey(key: Key): Int

Attributes
protected
Definition Classes
GenericAggregatorMapper → PublishedPartMapper
val partitionsPerAggregatedPart: Seq[Int]
def parts: Seq[Int]
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()

Packages

GenericAggregatorMapper

final case class GenericAggregatorMapper(partitionsPerAggregatedPart: Seq[Int]) extends PublishedPartMapper with Product with Serializable

Instance Constructors

Value Members

Inherited from Product

Inherited from Equals

Inherited from PublishedPartMapper

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

GenericAggregatorMapper 

final case class GenericAggregatorMapper(partitionsPerAggregatedPart: Seq[Int]) extends PublishedPartMapper with Product with Serializable

Instance Constructors

Value Members

Inherited from Product

Inherited from Equals

Inherited from PublishedPartMapper

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped

GenericAggregatorMapper