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package root

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root
package com

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root
package here

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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.
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

OneToMany

Companion class OneToMany

object OneToMany extends Serializable

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def apply[S, T](flatMapFn: (S) ⇒ Iterable[T], inverseFn: PartialFunction[T, S]): OneToMany[S, T]
Represents a 1-to-n relation by pairing a function flatMapFn with its inverse function inverseFn.
Represents a 1-to-n relation by pairing a function flatMapFn with its inverse function inverseFn. If the function represented by this class is applied to a value for which inverseFn is not the inverse of mapFn, an exception is thrown.
Note that inverseFn can be called by the Data Processing Library on values that are not produced by mapFn. Define inverseFn as a partial function to correctly restrict its domain to the set of keys, for which an inverse can be defined.
flatMapFn
The mapping function.
inverseFn
The inverse of the mapping function.
final def asInstanceOf[T0]: T0

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def clone(): AnyRef

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final def isInstanceOf[T0]: Boolean

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final def ne(arg0: AnyRef): Boolean

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final def notify(): Unit

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final def notifyAll(): Unit

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final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
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val toChildren: OneToMany[HereTile, HereTile]
Represents a OneToMany relation that maps com.here.platform.data.processing.catalog.Partition.HereTiles into their children.
def toDescendants(fromLevel: Int, toLevel: Int): OneToMany[HereTile, HereTile]
Builds a OneToMany relation that maps com.here.platform.data.processing.catalog.Partition.HereTiles into their descendant tiles at a given level.
Builds a OneToMany relation that maps com.here.platform.data.processing.catalog.Partition.HereTiles into their descendant tiles at a given level.
fromLevel
The level of the original tiles.
toLevel
The level of the corresponding descendants.
returns
The n-to-1 relation.
def toPartitionKeys[Name <: Name](catalog: Id, layers: Set[Id])(implicit arg0: ClassTag[Name]): OneToMany[Name, Key]
Builds a OneToMany relation that maps com.here.platform.data.processing.catalog.Partition.Names into com.here.platform.data.processing.catalog.Partition.Keys of a given catalog and layers.
Builds a OneToMany relation that maps com.here.platform.data.processing.catalog.Partition.Names into com.here.platform.data.processing.catalog.Partition.Keys of a given catalog and layers. A key is created for each layer specified in layers.
Name
The partition name type.
catalog
The catalog ID.
layers
The layer IDs.
returns
The 1-to-n relation.
def toString(): String

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final def wait(): Unit

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Packages

OneToMany

Companion class OneToMany

object OneToMany extends Serializable

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Companion class OneToMany

object OneToMany extends Serializable

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OneToMany