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

java.lang.Object
  extended by org.pentaho.di.trans.step.BaseStepMeta
      extended by 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