org.knime.base.node.preproc.pmml.normalize

Class NormalizerPMMLApplyNodeModel

java.lang.Object

org.knime.core.node.NodeModel

org.knime.base.node.preproc.normalize.NormalizerApplyNodeModel

org.knime.base.node.preproc.pmml.normalize.NormalizerPMMLApplyNodeModel

Direct Known Subclasses:

NormalizerPMMLDeNodeModel

public class NormalizerPMMLApplyNodeModel
extends NormalizerApplyNodeModel

Constructor Summary

Constructors

Constructor and Description
NormalizerPMMLApplyNodeModel()

Method Summary

Modifier and Type	Method and Description
protected PortObjectSpec[]	configure(PortObjectSpec[] inSpecs) Configure method for general port types.
StreamableOperator	createStreamableOperator(PartitionInfo partitionInfo, PortObjectSpec[] inSpecs) Streaming API (pending): Factory method for a streamable operator that is used to execute this node.
protected PortObject[]	execute(PortObject[] inData, ExecutionContext exec) Execute method for general port types.
protected AffineTransConfiguration	getAffineTrans(AffineTransConfiguration affineTransConfig) Return the configuration with possible additional transformations made.
InputPortRole[]	getInputPortRoles() Streaming API (pending): Defines properties on the input ports when used in a streamed and/or distributed fashion.
OutputPortRole[]	getOutputPortRoles() Streaming API (pending): Similar to NodeModel.getInputPortRoles() describes the role of the output.

Methods inherited from class org.knime.base.node.preproc.normalize.NormalizerApplyNodeModel

loadInternals, loadValidatedSettingsFrom, reset, saveInternals, saveSettingsTo, validateSettings

Methods inherited from class org.knime.core.node.NodeModel

addWarningListener, computeFinalOutputSpecs, configure, continueLoop, createInitialStreamableOperatorInternals, createMergeOperator, execute, finishStreamableExecution, getAvailableFlowVariables, getAvailableInputFlowVariables, getCredentialsProvider, getInHiLiteHandler, getInPortType, getInteractiveNodeView, getLogger, getLoopEndNode, getLoopStartNode, getNrInPorts, getNrOutPorts, getOutHiLiteHandler, getOutPortType, getWarningMessage, iterate, notifyViews, notifyWarningListeners, onDispose, peekFlowVariableDouble, peekFlowVariableInt, peekFlowVariableString, pushFlowVariableDouble, pushFlowVariableInt, pushFlowVariableString, removeWarningListener, resetAndConfigureLoopBody, setInHiLiteHandler, setWarningMessage, stateChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NormalizerPMMLApplyNodeModel

public NormalizerPMMLApplyNodeModel()

Method Detail

configure

protected PortObjectSpec[] configure(PortObjectSpec[] inSpecs)
                              throws InvalidSettingsException

Configure method for general port types. The argument specs represent the input object specs and are guaranteed to be subclasses of the PortObjectSpecs that are defined through the PortTypes given in the constructor unless this model is an InactiveBranchConsumer (most nodes are not). Similarly, the returned output specs need to comply with their port types spec class (otherwise an error is reported by the framework). They may also be null (out spec not known at time of configuration) or inactive (output and downstream nodes are inactive).

For a general description of the configure method refer to the description of the specialized NodeModel.configure(DataTableSpec[]) methods as it addresses more use cases.

Overrides:

configure in class NormalizerApplyNodeModel

Parameters:

inSpecs - The input data table specs. Items of the array could be null if no spec is available from the corresponding input port (i.e. not connected or upstream node does not produce an output spec). If a port is of type BufferedDataTable.TYPE and no spec is available the framework will replace null by an empty DataTableSpec (no columns) unless the port is marked as optional as per constructor.

Returns:

The output objects specs or null.

Throws:

InvalidSettingsException - If this node can't be configured.

execute

protected PortObject[] execute(PortObject[] inData,
                               ExecutionContext exec)
                        throws Exception

Execute method for general port types. The argument inObjects represent the input objects and the returned array represents the output objects. The elements in the argument array are generally guaranteed to be not null and subclasses of the PortObject classes that are defined through the PortTypes given in the constructor. Similarly, the returned output objects need to comply with their port types object class (otherwise an error is reported by the framework) and must not be null. There are few exceptions to these rules:

• Nodes with optional inputs (as specified in the constructor) may find null elements in the array.
• Node that implement InactiveBranchConsumer may find instances of InactiveBranchPortObject in case the corresponding input is inactive.
• All nodes are allowed to return InactiveBranchPortObject elements in case the output should be inactivated.
• Loop end nodes may return null in case they restart the loop by setting the corresponding flags.

For a general description of the execute method refer to the description of the specialized NodeModel.execute(BufferedDataTable[], ExecutionContext) methods as it addresses more use cases.

Overrides:

execute in class NormalizerApplyNodeModel

Parameters:

inData - The input objects.

exec - For BufferedDataTable creation and progress.

Returns:

The output objects.

Throws:

Exception - If the node execution fails for any reason.

createStreamableOperator

public StreamableOperator createStreamableOperator(PartitionInfo partitionInfo,
                                                   PortObjectSpec[] inSpecs)
                                            throws InvalidSettingsException

Streaming API (pending): Factory method for a streamable operator that is used to execute this node. The default implementation returns a standard operator that wraps the NodeModel.execute(PortObject[], ExecutionContext) method. Subclasses may override it to return a new operator that follows the data handling described by the NodeModel.getInputPortRoles() and NodeModel.getOutputPortRoles() methods.

This method is called by the node executor once or multiple times depending on the input roles. If any input is distributable, the method is called multiple times (for each partition once), possibly on different (remote) clones of this NodeModel.

Overrides:

createStreamableOperator in class NormalizerApplyNodeModel

Parameters:

partitionInfo - The partition info describing the chunk (if distributable).

inSpecs - The port object specs of the input ports. These are identical to the specs that NodeModel.configure(PortObjectSpec[]) was last called with (also on the remote side).

Returns:

A new operator for the (chunk) execution.

Throws:

InvalidSettingsException - Usually not thrown in the client but still part of the method signature as implementations often run the same methods as during configure. (This method is not being called when configure fails.)

getInputPortRoles

public InputPortRole[] getInputPortRoles()

Streaming API (pending): Defines properties on the input ports when used in a streamed and/or distributed fashion.

A data input is streamed when the node implementation only needs to see each data record once (no iterative access), otherwise it's non-streamed. If a port is streamed the StreamableOperator.runFinal(PortInput[], PortOutput[], ExecutionContext) method will provide the input as a RowInput object, to which the client implementation can safely type-cast to. For non-streamed ports the input is represented by an instance of PortObjectInput. Non-data ports (not BufferedDataTable) are always non-streamed.

An data input may be distributable (= parallelizable), in which case the data is processed in paralleled (possibly scattered in the cloud). Non-data ports are always non-distributable (but the execution may still take place in a distributed fashion if another port is distributed -- any non-distributable port is then simply duplicated as required).

Overrides:

getInputPortRoles in class NormalizerApplyNodeModel

Returns:

An array with the port role for each input port. Null elements are not allowed. The default implementation marks each input as InputPortRole.NONDISTRIBUTED_NONSTREAMABLE.

getOutputPortRoles

public OutputPortRole[] getOutputPortRoles()

Streaming API (pending): Similar to NodeModel.getInputPortRoles() describes the role of the output. An output is distributable when the (distributed!) input directly maps to the output without any further merge or reduction step (which is otherwise described by the NodeModel.createMergeOperator()). Only data outputs can be distributable, any other (model) output is always non-distributable. The input- and output roles define the place where the output data is generated:

• If the input data (and hence also the output data) is non-distributable, the output will be generated by the StreamableOperator.runFinal(PortInput[], PortOutput[], ExecutionContext) method. Only one instance of the operator is used.
• If both the input and output data is distributable the output is created by the StreamableOperator.runFinal(PortInput[], PortOutput[], ExecutionContext) method, too. Note that in this case there are several instances of a StreamableOperator (either representing different threads in the same JVM or distributed in a compute cluster).
• If the input is distributable but the output is non-distributable, the output is created in the NodeModel.finishStreamableExecution(StreamableOperatorInternals, ExecutionContext, PortOutput[]) implementation. The client implementation must also overwrite the NodeModel.createMergeOperator() method. The implementation of StreamableOperator.runFinal(PortInput[], PortOutput[], ExecutionContext) must not return or push any result into the PortOutput representations.

In case a node has "mixed" outputs (e.g. a distributable data output and a non-distributable model output) the output objects are produced at two different locations: The data in the StreamableOperator instances and the model after the merge in the NodeModel.

Overrides:

getOutputPortRoles in class NormalizerApplyNodeModel

Returns:

The output roles for each of the output ports, never null. The default implementation returns OutputPortRole.NONDISTRIBUTED.

getAffineTrans

protected AffineTransConfiguration getAffineTrans(AffineTransConfiguration affineTransConfig)

Return the configuration with possible additional transformations made.

Overrides:

getAffineTrans in class NormalizerApplyNodeModel

Parameters:

affineTransConfig - the original affine transformation configuration.

Returns:

the (possible modified) configuration.