Uses of Interface
com.pervasive.datarush.operators.MetadataContext

Packages that use MetadataContext

Package	Description
com.pervasive.datarush.analytics.cluster.kmeans	Provides the KMeans algorithm.
com.pervasive.datarush.analytics.decisiontree.learner	Provides the PMML learner operator and associated classes.
com.pervasive.datarush.analytics.pmml	Provides shared and base classes for PMML model representation of Analytics algorithms.
com.pervasive.datarush.analytics.regression	Provides utility, PMML and other classes for shared use by regression related entities.
com.pervasive.datarush.graphs	Provides classes and interfaces for the construction of executable dataflow graphs.
com.pervasive.datarush.hbase
com.pervasive.datarush.operators	Provides classes and interfaces for developing dataflow operators.
com.pervasive.datarush.ports.record	Provides implementations of port objects related to the flow of record sets between operators.

Uses of MetadataContext in com.pervasive.datarush.analytics.cluster.kmeans

Methods in com.pervasive.datarush.analytics.cluster.kmeans with parameters of type MetadataContext

Modifier and Type	Method	Description
protected CompositionIterator	KMeans.createIterator(MetadataContext ctx)

Uses of MetadataContext in com.pervasive.datarush.analytics.decisiontree.learner

Methods in com.pervasive.datarush.analytics.decisiontree.learner with parameters of type MetadataContext

Modifier and Type	Method	Description
protected CompositionIterator	DecisionTreeLearner.createIterator(MetadataContext ctx)

Uses of MetadataContext in com.pervasive.datarush.analytics.pmml

Methods in com.pervasive.datarush.analytics.pmml with parameters of type MetadataContext

Modifier and Type	Method	Description
PMMLModelSpec	PMMLPort.getPMMLModelSpec(MetadataContext ctx)	Getter to be used to set the PMMLModelSpec for a PMMLPort

Uses of MetadataContext in com.pervasive.datarush.analytics.regression

Methods in com.pervasive.datarush.analytics.regression with parameters of type MetadataContext

Modifier and Type	Method	Description
protected CompositionIterator	LinearRegressionLearner.createIterator(MetadataContext context)

Uses of MetadataContext in com.pervasive.datarush.graphs

Methods in com.pervasive.datarush.graphs with parameters of type MetadataContext

Modifier and Type	Method	Description
void	GraphCompilationListener.preCompile(MetadataContext ctx, GraphPath path, LogicalOperator operator)	Invoked just prior to compiling an operator.

Uses of MetadataContext in com.pervasive.datarush.hbase

Methods in com.pervasive.datarush.hbase with parameters of type MetadataContext

Modifier and Type	Method	Description
protected com.pervasive.datarush.hadoop.shims.hbase.TableSchema	KeyValueOperator.mapFromHCatalog(MetadataContext ctx)	Load a mapping from an existing HCatalog table.
protected void	KeyValueOperator.mapToHCatalog(MetadataContext ctx, RecordPort input)	Write a mapping to a new HCatalog table.
protected boolean	KeyValueOperator.schemaSupportedByHCatalog(MetadataContext ctx)	Determines if the current schema can be written to HCatalog.
protected boolean	KeyValueOperator.tableExistsInHCatalog(MetadataContext ctx)	Determines if the currently selected HCatalog table already exists.

Uses of MetadataContext in com.pervasive.datarush.operators

Subinterfaces of MetadataContext in com.pervasive.datarush.operators

Modifier and Type	Interface	Description
interface	CompositionContext	Composition context used by CompositeOperator's.
interface	DeferredCompositionContext	Composition context passed to DeferredCompositeOperator.compose(DeferredCompositionContext).
interface	ExecutionContext	Execution context passed to ExecutableOperator.execute(ExecutionContext).
interface	IterativeExecutionContext	Context passed to CompositionIterator.execute(IterativeExecutionContext).
interface	IterativeMetadataContext	Context used by IterativeOperator.computeMetadata(IterativeMetadataContext).
interface	MetadataCalculationContext	Base interface for all contexts in which metadata is being computed.
interface	StreamingMetadataContext	Context used when computing metadata via StreamingOperator.computeMetadata(StreamingMetadataContext).

Methods in com.pervasive.datarush.operators with parameters of type MetadataContext

Modifier and Type	Method	Description
protected abstract CompositionIterator	IterativeOperator.createIterator(MetadataContext ctx)	Invoked at the start of execution.
CompositionIterator	OperatorProxies.IterativeOperatorProxy.createIterator(MetadataContext ctx)	Public only as a matter of implementation; not intended for external use

Uses of MetadataContext in com.pervasive.datarush.ports.record

Methods in com.pervasive.datarush.ports.record with parameters of type MetadataContext

Modifier and Type	Method	Description
DataDistribution	RecordPort.getCombinedDataDistribution(MetadataContext ctx)	Gets the required data distribution of this port
DataOrdering	RecordPort.getCombinedDataOrdering(MetadataContext ctx)	Gets the required data ordering of this port
RecordMetadata	RecordPort.getCombinedMetadata(MetadataContext ctx)	Returns the actual metadata that the operator will see given its current requirements and parallelism setting.
DataDistribution	RecordPort.getRequiredDataDistribution(MetadataContext ctx)	Gets the required data distribution of this port
DataOrdering	RecordPort.getRequiredDataOrdering(MetadataContext ctx)	Gets the required data ordering of this port
RecordMetadata	RecordPort.getRequiredMetadata(MetadataContext ctx)	Returns the required metadata associated with this port
DataDistribution	RecordPort.getSourceDataDistribution(MetadataContext ctx)	Returns source data distribution associated with this input port.
DataOrdering	RecordPort.getSourceDataOrdering(MetadataContext ctx)	Returns source data ordering associated with this input port.
RecordMetadata	RecordPort.getSourceMetadata(MetadataContext ctx)	Returns the metadata associated with this port
RecordTokenType	RecordPort.getType(MetadataContext ctx)	Returns the record type of this port.