org.pentaho.di.trans.steps.joinrows
Class JoinRowsMeta

java.lang.Object
  org.pentaho.di.trans.step.BaseStepMeta
      org.pentaho.di.trans.steps.joinrows.JoinRowsMeta

All Implemented Interfaces:

Cloneable, StepAttributesInterface, StepMetaInterface

public class JoinRowsMeta
extends BaseStepMeta
implements StepMetaInterface

Field Summary

Fields inherited from class org.pentaho.di.trans.step.BaseStepMeta

loggingObject, STEP_ATTRIBUTES_FILE

Constructor Summary

JoinRowsMeta()

Method Summary

void	check(List<CheckResultInterface> remarks, TransMeta transMeta, StepMeta stepMeta, RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info) Checks the settings of this step and puts the findings in a remarks List.
Object	clone() Make an exact copy of this step, make sure to explicitly copy Collections etc.
boolean	excludeFromRowLayoutVerification() This method is added to exclude certain steps from layout checking.
int	getCacheSize()
Condition	getCondition()
String	getDirectory()
void	getFields(RowMetaInterface rowMeta, String origin, RowMetaInterface[] info, StepMeta nextStep, VariableSpace space) Get the fields that are emitted by this step
String	getLookupStepname()
StepMeta	getMainStep()
String	getMainStepname()
String	getPrefix()
StepInterface	getStep(StepMeta stepMeta, StepDataInterface stepDataInterface, int cnr, TransMeta transMeta, Trans trans) Get the executing step, needed by Trans to launch a step.
StepDataInterface	getStepData() Get a new instance of the appropriate data class.
String	getXML() Produces the XML string that describes this step's information.
void	loadXML(Node stepnode, List<DatabaseMeta> databases, Map<String,Counter> counters) Load the values for this step from an XML Node
void	readRep(Repository rep, ObjectId id_step, List<DatabaseMeta> databases, Map<String,Counter> counters) Read the steps information from a Kettle repository
void	saveRep(Repository rep, ObjectId id_transformation, ObjectId id_step) Save the steps data into a Kettle repository
void	searchInfoAndTargetSteps(List<StepMeta> steps) Change step names into step objects to allow them to be name-changed etc.
void	setCacheSize(int cacheSize)
void	setCondition(Condition condition)
void	setDefault() Set default values
void	setDirectory(String directory)
void	setMainStep(StepMeta lookupFromStep)
void	setMainStepname(String lookupFromStepname)
void	setPrefix(String prefix)

Methods inherited from class org.pentaho.di.trans.step.BaseStepMeta

analyseImpact, cancelQueries, excludeFromCopyDistributeVerification, exportResources, findAttribute, findParent, getDescription, getDialogClassName, getLog, getLogChannelId, getName, getObjectCopy, getObjectId, getObjectRevision, getObjectType, getOptionalStreams, getParent, getParentStepMeta, getRepCode, getRepositoryDirectory, getRequiredFields, getRequiredFields, getResourceDependencies, getSQLStatements, getStepInjectionMetadataEntries, getStepIOMeta, getStepMetaInjectionInterface, getSupportedTransformationTypes, getTableFields, getTooltip, getUsedArguments, getUsedDatabaseConnections, getUsedLibraries, getXmlCode, handleStreamSelection, hasChanged, hasRepositoryReferences, isBasic, isDebug, isDetailed, isRowLevel, logBasic, logBasic, logDebug, logDebug, logDetailed, logDetailed, logError, logError, logError, logMinimal, logMinimal, logRowlevel, logRowlevel, lookupRepositoryReferences, resetStepIoMeta, setChanged, setChanged, setParentStepMeta, supportsErrorHandling

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.pentaho.di.trans.step.StepMetaInterface

analyseImpact, cancelQueries, excludeFromCopyDistributeVerification, exportResources, getDialogClassName, getOptionalStreams, getParentStepMeta, getRequiredFields, getResourceDependencies, getSQLStatements, getStepIOMeta, getStepMetaInjectionInterface, getSupportedTransformationTypes, getTableFields, getUsedArguments, getUsedDatabaseConnections, getUsedLibraries, handleStreamSelection, hasRepositoryReferences, lookupRepositoryReferences, resetStepIoMeta, setParentStepMeta, supportsErrorHandling

Constructor Detail

JoinRowsMeta

public JoinRowsMeta()

Method Detail

getMainStep

public StepMeta getMainStep()

Returns:

Returns the lookupFromStep.

setMainStep

public void setMainStep(StepMeta lookupFromStep)

Parameters:

lookupFromStep - The lookupFromStep to set.

getMainStepname

public String getMainStepname()

Returns:

Returns the lookupFromStepname.

setMainStepname

public void setMainStepname(String lookupFromStepname)

Parameters:

lookupFromStepname - The lookupFromStepname to set.

setCacheSize

public void setCacheSize(int cacheSize)

Parameters:

cacheSize - The cacheSize to set.

getCacheSize

public int getCacheSize()

Returns:

Returns the cacheSize.

getDirectory

public String getDirectory()

Returns:

Returns the directory.

setDirectory

public void setDirectory(String directory)

Parameters:

directory - The directory to set.

getPrefix

public String getPrefix()

Returns:

Returns the prefix.

setPrefix

public void setPrefix(String prefix)

Parameters:

prefix - The prefix to set.

getCondition

public Condition getCondition()

Returns:

Returns the condition.

setCondition

public void setCondition(Condition condition)

Parameters:

condition - The condition to set.

loadXML

public void loadXML(Node stepnode,
                    List<DatabaseMeta> databases,
                    Map<String,Counter> counters)
             throws KettleXMLException

Description copied from interface: StepMetaInterface

Load the values for this step from an XML Node

Specified by:

loadXML in interface StepMetaInterface

Parameters:

stepnode - the Node to get the info from

databases - The available list of databases to reference to

counters - Counters to reference.

Throws:

KettleXMLException - When an unexpected XML error occurred. (malformed etc.)

clone

public Object clone()

Description copied from interface: StepMetaInterface

Make an exact copy of this step, make sure to explicitly copy Collections etc.

Specified by:

clone in interface StepMetaInterface

Overrides:

clone in class BaseStepMeta

Returns:

an exact copy of this step

setDefault

public void setDefault()

Description copied from interface: StepMetaInterface

Set default values

Specified by:

setDefault in interface StepMetaInterface

getXML

public String getXML()
              throws KettleException

Description copied from class: BaseStepMeta

Produces the XML string that describes this step's information.

Specified by:

getXML in interface StepMetaInterface

Overrides:

getXML in class BaseStepMeta

Returns:

String containing the XML describing this step.

Throws:

KettleException - in case there is a conversion or XML encoding error

readRep

public void readRep(Repository rep,
                    ObjectId id_step,
                    List<DatabaseMeta> databases,
                    Map<String,Counter> counters)
             throws KettleException

Description copied from interface: StepMetaInterface

Read the steps information from a Kettle repository

Specified by:

readRep in interface StepMetaInterface

Parameters:

rep - The repository to read from

id_step - The step ID

databases - The databases to reference

counters - The counters to reference

Throws:

KettleException - When an unexpected error occurred (database, network, etc)

saveRep

public void saveRep(Repository rep,
                    ObjectId id_transformation,
                    ObjectId id_step)
             throws KettleException

Description copied from interface: StepMetaInterface

Save the steps data into a Kettle repository

Specified by:

saveRep in interface StepMetaInterface

Parameters:

rep - The Kettle repository to save to

id_transformation - The transformation ID

id_step - The step ID

Throws:

KettleException - When an unexpected error occurred (database, network, etc)

getFields

public void getFields(RowMetaInterface rowMeta,
                      String origin,
                      RowMetaInterface[] info,
                      StepMeta nextStep,
                      VariableSpace space)
               throws KettleStepException

Description copied from interface: StepMetaInterface

Get the fields that are emitted by this step

Specified by:

getFields in interface StepMetaInterface

Overrides:

getFields in class BaseStepMeta

Parameters:

rowMeta - The fields that are entering the step. These are changed to reflect the output metadata.

origin - The name of the step to be used as origin

info - The input rows metadata that enters the step through the specified channels in the same order as in method getInfoSteps(). The step metadata can then choose what to do with it: ignore it or not. Interesting is also that in case of database lookups, the layout of the target database table is put in info[0]

nextStep - if this is a non-null value, it's the next step in the transformation. The one who's asking, the step where the data is targetted towards.

space - TODO

Throws:

KettleStepException - when an error occurred searching for the fields.

check

public void check(List<CheckResultInterface> remarks,
                  TransMeta transMeta,
                  StepMeta stepMeta,
                  RowMetaInterface prev,
                  String[] input,
                  String[] output,
                  RowMetaInterface info)

Description copied from interface: StepMetaInterface

Checks the settings of this step and puts the findings in a remarks List.

Specified by:

check in interface StepMetaInterface

Parameters:

remarks - The list to put the remarks in @see org.pentaho.di.core.CheckResult

stepMeta - The stepMeta to help checking

prev - The fields coming from the previous step

input - The input step names

output - The output step names

info - The fields that are used as information by the step

getLookupStepname

public String getLookupStepname()

searchInfoAndTargetSteps

public void searchInfoAndTargetSteps(List<StepMeta> steps)

Description copied from class: BaseStepMeta

Change step names into step objects to allow them to be name-changed etc.

Specified by:

searchInfoAndTargetSteps in interface StepMetaInterface

Overrides:

searchInfoAndTargetSteps in class BaseStepMeta

Parameters:

steps - optionally search the info step in a list of steps

getStep

public StepInterface getStep(StepMeta stepMeta,
                             StepDataInterface stepDataInterface,
                             int cnr,
                             TransMeta transMeta,
                             Trans trans)

Description copied from interface: StepMetaInterface

Get the executing step, needed by Trans to launch a step.

Specified by:

getStep in interface StepMetaInterface

Parameters:

stepMeta - The step info

stepDataInterface - the step data interface linked to this step. Here the step can store temporary data, database connections, etc.

cnr - The copy nr to get

transMeta - The transformation info

trans - The launching transformation

getStepData

public StepDataInterface getStepData()

Description copied from interface: StepMetaInterface

Get a new instance of the appropriate data class. This data class implements the StepDataInterface. It basically contains the persisting data that needs to live on, even if a worker thread is terminated.

Specified by:

getStepData in interface StepMetaInterface

Returns:

The appropriate StepDataInterface class.

excludeFromRowLayoutVerification

public boolean excludeFromRowLayoutVerification()

Description copied from class: BaseStepMeta

This method is added to exclude certain steps from layout checking.

Specified by:

excludeFromRowLayoutVerification in interface StepMetaInterface

Overrides:

excludeFromRowLayoutVerification in class BaseStepMeta