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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 impl

Definition Classes: driver

package deltasets

Definition Classes: impl

package executors

Definition Classes: impl

package state

Definition Classes: impl

CatalogIdVersionEncoding

CommitProducer

CompleteConfigLoader

DepResolution

DriverContextImpl

DriverImpl

FailOnEmptyUploader

FixedVersionIdEncoding

Implicits

PreviousRunIdEncoding

com.here.platform.data.processing.driver.impl

CatalogIdVersionEncoding

Companion object CatalogIdVersionEncoding

sealed abstract class CatalogIdVersionEncoding extends AnyRef

Defines an encoding scheme for version information in catalog IDs. Every class extending this trait must define a separate encoding scheme with a unique identifier.

Attributes: protected

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AnyRef, Any

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FixedVersionId, PreviousRunId, FixedVersionIdEncoding, PreviousRunIdEncoding

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protected[lang]
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@throws( ... ) @native()
def encode(catalogId: String, argument: Long): Id
Given a catalog ID and a generic integer argument, returns a catalog ID encoding the argument.
Given a catalog ID and a generic integer argument, returns a catalog ID encoding the argument.
catalogId
The original catalog ID, with no version information encoded.
argument
The argument to be encoded.
returns
The new catalog ID, with version information encoded.

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def matches(catalogId: Id): Boolean
Checks if the given catalog ID matches the version encoding defined by the class.
Checks if the given catalog ID matches the version encoding defined by the class.
catalogId
The catalog ID to be checked.
returns
true if the catalog ID matches, false otherwise

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final def ne(arg0: AnyRef): Boolean

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def toString(): String

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def unapply(catalogId: Id): Option[(Id, Long)]
Given a catalog ID encoded in this encoding scheme, returns the decoded catalog ID and the encoding argument.
Given a catalog ID encoded in this encoding scheme, returns the decoded catalog ID and the encoding argument. Returns None if the given catalog ID is not encoded in this encoding scheme.
catalogId
The catalog ID to be decoded.
returns
The original catalog ID and the encoding argument.
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CatalogIdVersionEncoding

Companion object CatalogIdVersionEncoding

sealed abstract class CatalogIdVersionEncoding extends AnyRef

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CatalogIdVersionEncoding 

Companion object CatalogIdVersionEncoding

sealed abstract class CatalogIdVersionEncoding extends AnyRef

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CatalogIdVersionEncoding