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 java

This package provides Java bindings for the Data Processing Library, to build distributed data processing applications in Java.

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.java.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 implement a com.here.platform.data.processing.java.compiler.Direct1ToNCompiler.

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

The processing Library supports the following patterns:

- com.here.platform.data.processing.java.compiler.NonIncrementalCompiler: non-incremental compilation only - com.here.platform.data.processing.java.compiler.DepCompiler: non-incremental dependency calculation and incremental compilation - com.here.platform.data.processing.java.compiler.IncrementalDepCompiler: incremental dependency calculation and compilation - com.here.platform.data.processing.java.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.java.compiler.DirectMToNCompiler: incremental compilation where every output tile can depend on multiple input tiles, and this mapping is independent from tile content - com.here.platform.data.processing.java.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.java.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 extends a runner class (like PipelineRunner) to setup the Driver, and interfaces with the environment where the application runs. For more details, see the Main classes in the example compilers.

com.here.platform.data.processing.java.catalog, com.here.platform.data.processing.java.blobstore, and com.here.platform.data.processing.java.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: processing

package impl

Definition Classes: java

package compiler

Definition Classes: impl

package direct

Definition Classes: compiler

package mapgroup

Definition Classes: compiler

package reftree

Definition Classes: compiler

ConcreteDepCompiler

ConcreteDirect1ToNCompiler

ConcreteDirectMToNCompiler

ConcreteDirectMapGroupCompiler

ConcreteIncrementalDepCompiler

ConcreteNonIncrementalCompiler

ConcreteRefTreeCompiler

Converters

DepCompilerWrapper

IncrementalDepCompilerWrapper

InputPartitionerWrapper

NonIncrementalCompilerWrapper

OutputPartitionerWrapper

WrapperCompileOut1To1Fn

WrapperCompileOut1ToNFn

WrapperCompileOutFn

WrapperDirect1ToNCompiler

WrapperDirectMToNCompiler

WrapperInputLayers

WrapperInputOptPartitioner

WrapperMapGroupCompiler

WrapperOutputLayers

WrapperOutputOptPartitioner

WrapperRefTreeCompiler

com.here.platform.data.processing.java.impl.compiler

WrapperDirectMToNCompiler

Companion object WrapperDirectMToNCompiler

trait WrapperDirectMToNCompiler[T, W <: DirectMToNCompiler[T]] extends DirectMToNCompiler[T] with WrapperInputLayers[W] with WrapperInputOptPartitioner[W] with WrapperCompileInFn[T, W] with WrapperOutputLayers[W] with WrapperOutputOptPartitioner[W] with WrapperCompileOutFn[T, W]

Linear Supertypes

WrapperCompileOutFn[T, W], WrapperOutputOptPartitioner[W], WrapperOutputLayers[W], WrapperCompileInFn[T, W], WrapperInputOptPartitioner[W], WrapperInputLayers[W], Wrapper[W], DirectMToNCompiler[T], CompileOutFn[T], OutputOptPartitioner, OutputLayers, CompileInFn[T], Serializable, Serializable, InputOptPartitioner, InputLayers, AnyRef, Any

Known Subclasses

ConcreteDirectMToNCompiler

Ordering

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By Inheritance

Inherited

WrapperDirectMToNCompiler
WrapperCompileOutFn
WrapperOutputOptPartitioner
WrapperOutputLayers
WrapperCompileInFn
WrapperInputOptPartitioner
WrapperInputLayers
Wrapper
DirectMToNCompiler
CompileOutFn
OutputOptPartitioner
OutputLayers
CompileInFn
Serializable
Serializable
InputOptPartitioner
InputLayers
AnyRef
Any

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Visibility

Public
All

Abstract Value Members

abstract def compileOutFnDefined(): Unit
Must be overridden as final by all subclasses, to block the mixin of different interfaces in the same compiler class and to assure that at least one child interface is mixed in.
Must be overridden as final by all subclasses, to block the mixin of different interfaces in the same compiler class and to assure that at least one child interface is mixed in.

Attributes
protected
Definition Classes
CompileOutFn
abstract def impl: W

Definition Classes
Wrapper

Concrete 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
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
def compileInFn(in: (InKey, InMeta)): T
Calculates the intermediate result from a single input partition.
Calculates the intermediate result from a single input partition. The result will be provided together with the input key in the com.here.platform.data.processing.compiler.direct.CompileOutFn.
in
the input partition to process
returns
the value of intermediate data of type T for this partition. This value will be passed in com.here.platform.data.processing.compiler.direct.CompileOutFn to all output keys impacted by the in partition.

Definition Classes
WrapperCompileInFn → CompileInFn
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(o: Any): Boolean

Definition Classes
Wrapper → AnyRef → Any
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()
def hashCode(): Int

Definition Classes
Wrapper → AnyRef → Any
def inLayers: Map[Id, Set[Id]]
Represents layers of the input catalogs that you should query and provide to the compiler.
Represents layers of the input catalogs that you should query and provide to the compiler. These layers are grouped by input catalog and identified by catalog ID and layer ID.

Definition Classes
WrapperInputLayers → InputLayers
def inPartitioner(parallelism: Int): Option[Partitioner[InKey]]
Specifies the partitioner to use when querying the input catalogs.
Specifies the partitioner to use when querying the input catalogs. If no partitioner is provided, by returning None from this function, then the Executor uses the default partitioner.
parallelism
The number of partitions the partitioner should partition the catalog into, this should match the parallelism of the Spark RDD containing the input partitions.
returns
The optional input partitioner with the parallelism specified.

Definition Classes
WrapperInputOptPartitioner → InputOptPartitioner
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def mappingFn(inKey: InKey): Iterable[OutKey]
Calculates which output partitions, if any, are affected by the given single input partition.
Calculates which output partitions, if any, are affected by the given single input partition. The mapping must be function of only the input com.here.platform.data.processing.compiler.InKey.
The metadata is intentionally not provided, because the result of this call cannot be function of the metadata and therefore the data. This is because the direct.CompileInFn implementation does not perform a stateful dependency-tracking for incremental compilation. If the function would use additional information from the tile content, it would break incremental compilation use case.
inKey
the input partition being mapped
returns
the output partitions that the given input partition maps to

Definition Classes
WrapperCompileInFn → CompileInFn
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()
final val outCatalogId: Id
Identifier for the output catalog.
Identifier for the output catalog.

Definition Classes
OutputLayers
def outLayers: Set[Id]
Layers to be produced by the compiler.
Layers to be produced by the compiler.

Definition Classes
WrapperOutputLayers → OutputLayers
def outPartitioner(parallelism: Int): Option[Partitioner[OutKey]]
Specifies the partitioner to use when querying the output catalog and producing output data.
Specifies the partitioner to use when querying the output catalog and producing output data. If no partitioner is provided, by returning None from this function, then the Executor uses the default partitioner.
parallelism
The number of partitions the partitioner should partition the catalog into, this should match the parallelism of the Spark RDD containing the output partitions.
returns
The optional output partitioner with the parallelism specified.

Definition Classes
WrapperOutputOptPartitioner → OutputOptPartitioner
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
Wrapper → AnyRef → Any
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

WrapperDirectMToNCompiler

Companion object WrapperDirectMToNCompiler

trait WrapperDirectMToNCompiler[T, W <: DirectMToNCompiler[T]] extends DirectMToNCompiler[T] with WrapperInputLayers[W] with WrapperInputOptPartitioner[W] with WrapperCompileInFn[T, W] with WrapperOutputLayers[W] with WrapperOutputOptPartitioner[W] with WrapperCompileOutFn[T, W]

Abstract Value Members

Concrete Value Members

Inherited from WrapperCompileOutFn[T, W]

Inherited from WrapperOutputOptPartitioner[W]

Inherited from WrapperOutputLayers[W]

Inherited from WrapperCompileInFn[T, W]

Inherited from WrapperInputOptPartitioner[W]

Inherited from WrapperInputLayers[W]

Inherited from Wrapper[W]

Inherited from DirectMToNCompiler[T]

Inherited from CompileOutFn[T]

Inherited from OutputOptPartitioner

Inherited from OutputLayers

Inherited from CompileInFn[T]

Inherited from Serializable

Inherited from Serializable

Inherited from InputOptPartitioner

Inherited from InputLayers

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

WrapperDirectMToNCompiler 

Companion object WrapperDirectMToNCompiler

trait WrapperDirectMToNCompiler[T, W <: DirectMToNCompiler[T]] extends DirectMToNCompiler[T] with WrapperInputLayers[W] with WrapperInputOptPartitioner[W] with WrapperCompileInFn[T, W] with WrapperOutputLayers[W] with WrapperOutputOptPartitioner[W] with WrapperCompileOutFn[T, W]

Abstract Value Members

Concrete Value Members

Inherited from WrapperCompileOutFn[T, W]

Inherited from WrapperOutputOptPartitioner[W]

Inherited from WrapperOutputLayers[W]

Inherited from WrapperCompileInFn[T, W]

Inherited from WrapperInputOptPartitioner[W]

Inherited from WrapperInputLayers[W]

Inherited from Wrapper[W]

Inherited from DirectMToNCompiler[T]

Inherited from CompileOutFn[T]

Inherited from OutputOptPartitioner

Inherited from OutputLayers

Inherited from CompileInFn[T]

Inherited from Serializable

Inherited from Serializable

Inherited from InputOptPartitioner

Inherited from InputLayers

Inherited from AnyRef

Inherited from Any

Ungrouped

WrapperDirectMToNCompiler