public class LoopStartVariableNodeModel extends TableToVariableNodeModel implements LoopStartNodeTerminator
|Modifier||Constructor and Description|
One input, one output.
|Modifier and Type||Method and Description|
Configure method for general port types.
Execute method for general port types.
Override this function in the derived model and reset your
loadInternals, loadValidatedSettingsFrom, pushVariables, pushVariables, saveInternals, saveSettingsTo, validateSettings
addWarningListener, computeFinalOutputSpecs, configure, continueLoop, createInitialStreamableOperatorInternals, createMergeOperator, createStreamableOperator, execute, finishStreamableExecution, getAvailableFlowVariables, getAvailableInputFlowVariables, getCredentialsProvider, getInHiLiteHandler, getInPortType, getInputPortRoles, getInteractiveNodeView, getLogger, getLoopEndNode, getLoopStartNode, getNrInPorts, getNrOutPorts, getOutHiLiteHandler, getOutPortType, getOutputPortRoles, getWarningMessage, iterate, notifyViews, notifyWarningListeners, onDispose, peekFlowVariableDouble, peekFlowVariableInt, peekFlowVariableString, pushFlowVariableDouble, pushFlowVariableInt, pushFlowVariableString, removeWarningListener, resetAndConfigureLoopBody, setInHiLiteHandler, setWarningMessage, stateChanged
protected PortObjectSpec configure(PortObjectSpec inSpecs) throws InvalidSettingsException
PortObjectSpecsthat are defined through the
PortTypesgiven in the
constructorunless 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.
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.TYPEand 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.
InvalidSettingsException- If this node can't be configured.
protected PortObject execute(PortObject inPOs, ExecutionContext exec) throws Exception
inObjectsrepresent 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 classesthat are defined through the
PortTypesgiven 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:
InactiveBranchConsumermay find instances of
InactiveBranchPortObjectin case the corresponding input is inactive.
InactiveBranchPortObjectelements in case the output should be inactivated.
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.
public boolean terminateLoop()
protected void reset()
NodeModel. All components should unregister themselves from any observables (at least from the hilite handler right now). All internally stored data structures should be released. User settings should not be deleted/reset though.
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