Package org.apache.hop.pipeline.transforms.constant

Class Constant

java.lang.Object

org.apache.hop.pipeline.transform.BaseTransform<ConstantMeta,ConstantData>

org.apache.hop.pipeline.transforms.constant.Constant

All Implemented Interfaces:

IExtensionData, IHasLogChannel, ILoggingObject, IVariables, org.apache.hop.pipeline.engine.IEngineComponent, org.apache.hop.pipeline.transform.ITransform

public class Constant
extends org.apache.hop.pipeline.transform.BaseTransform<ConstantMeta,ConstantData>

Generates a number of (empty or the same) rows

Field Summary

Fields inherited from class org.apache.hop.pipeline.transform.BaseTransform

data, deadLockCounter, executionEndDate, executionStartDate, extensionDataMap, first, firstRowReadDate, initStartDate, lastRowWrittenDate, log, meta, metadataProvider, rowListeners, safeStopped, terminator, terminatorRows, variables

Constructor Summary

Constructors

Constructor	Description
Constant(org.apache.hop.pipeline.transform.TransformMeta transformMeta, ConstantMeta meta, ConstantData data, int copyNr, org.apache.hop.pipeline.PipelineMeta pipelineMeta, org.apache.hop.pipeline.Pipeline pipeline)

Method Summary

Modifier and Type	Method	Description
static RowMetaAndData	buildRow(ConstantMeta meta, ConstantData data, List<ICheckResult> remarks)
boolean	init()
boolean	processRow()

Methods inherited from class org.apache.hop.pipeline.transform.BaseTransform

addResultFile, addRowListener, addRowSetToInputRowSets, addRowSetToOutputRowSets, addTransformFinishedListener, addTransformStartedListener, batchComplete, canProcessOneRow, checkFeedback, cleanup, clearInputRowSets, clearOutputRowSets, closeQuietly, copyFrom, decrementLinesRead, decrementLinesWritten, dispatch, dispose, findInputRowSet, findInputRowSet, findOutputRowSet, findOutputRowSet, finishBundle, getContainerId, getCopy, getCopyNr, getCurrentInputRowSetNr, getCurrentOutputRowSetNr, getData, getDispatcher, getErrorRowMeta, getErrors, getExecutionDuration, getExecutionEndDate, getExecutionStartDate, getExtensionDataMap, getFilename, getFirstInputRowSet, getFirstRowReadDate, getInitStartDate, getInputBufferSize, getInputRowMeta, getInputRowSets, getLastRowWrittenDate, getLinesInput, getLinesOutput, getLinesRead, getLinesRejected, getLinesSkipped, getLinesUpdated, getLinesWritten, getLogChannel, getLogChannelId, getLogLevel, getLogText, getMeta, getMetadataProvider, getName, getObjectCopy, getObjectName, getObjectType, getOutputBufferSize, getOutputRowSets, getParent, getParentVariables, getPartitionId, getPartitionTargets, getPipeline, getPipelineMeta, getPreviewRowMeta, getProcessed, getRegistrationDate, getRepartitioning, getResultFiles, getRow, getRowFrom, getRowHandler, getRowListeners, getStatus, getStatusDescription, getTransformFinishedListeners, getTransformMeta, getTransformName, getTransformPluginId, getTransformStartedListeners, getVariable, getVariable, getVariableBoolean, getVariableNames, handleGetRowFrom, handlePutError, handlePutRowTo, identifyErrorOutput, incrementLinesInput, incrementLinesOutput, incrementLinesRead, incrementLinesRejected, incrementLinesSkipped, incrementLinesUpdated, incrementLinesWritten, initBeforeStart, initializeFrom, isAllowEmptyFieldNamesAndTypes, isBasic, isDebug, isDetailed, isDistributed, isForcingSeparateLogging, isGatheringMetrics, isInitialising, isMapping, isPartitioned, isPaused, isRowLevel, isRunning, isSafeStopped, isSelected, isStopped, logBasic, logBasic, logDebug, logDebug, logDetailed, logDetailed, logError, logError, logError, logMinimal, logMinimal, logRowlevel, logRowlevel, logSummary, markStart, markStop, outputIsDone, pauseRunning, putError, putRow, putRowTo, removeRowListener, resolve, resolve, resolve, resumeRunning, rowsetInputSize, rowsetOutputSize, safeModeChecking, safeModeChecking, setAllowEmptyFieldNamesAndTypes, setCarteObjectId, setCopy, setCopyNr, setCurrentInputRowSetNr, setCurrentOutputRowSetNr, setDistributed, setErrorRowMeta, setErrors, setExecutionEndDate, setExecutionStartDate, setFirstRowReadDate, setForcingSeparateLogging, setGatheringMetrics, setInitStartDate, setInputRowMeta, setInputRowSets, setInternalVariables, setLastRowWrittenDate, setLinesInput, setLinesOutput, setLinesRead, setLinesRejected, setLinesSkipped, setLinesUpdated, setLinesWritten, setLogLevel, setMetadataProvider, setOutputDone, setOutputRowSets, setParentVariables, setPartitioned, setPartitionId, setPartitionTargets, setPaused, setPaused, setPreviewRowMeta, setRepartitioning, setRowHandler, setRunning, setSafeStopped, setStopped, setTransformFinishedListeners, setTransformName, setTransformStartedListeners, setVariable, setVariables, shareWith, startBundle, stopAll, stopRunning, swapFirstInputRowSetIfExists, toString, waitUntilPipelineIsStarted

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hop.pipeline.transform.ITransform

subStatuses

Constructor Detail

Constant

public Constant(org.apache.hop.pipeline.transform.TransformMeta transformMeta,
                ConstantMeta meta,
                ConstantData data,
                int copyNr,
                org.apache.hop.pipeline.PipelineMeta pipelineMeta,
                org.apache.hop.pipeline.Pipeline pipeline)

Method Detail

buildRow

public static final RowMetaAndData buildRow(ConstantMeta meta,
                                            ConstantData data,
                                            List<ICheckResult> remarks)

processRow

public boolean processRow()
                   throws HopException

Specified by:

processRow in interface org.apache.hop.pipeline.transform.ITransform

Overrides:

processRow in class org.apache.hop.pipeline.transform.BaseTransform<ConstantMeta,ConstantData>

Throws:

HopException

init

public boolean init()

Specified by:

init in interface org.apache.hop.pipeline.transform.ITransform

Overrides:

init in class org.apache.hop.pipeline.transform.BaseTransform<ConstantMeta,ConstantData>