org.pentaho.di.trans.steps.columnexists
Class ColumnExistsMeta

java.lang.Object
  org.pentaho.di.trans.step.BaseStepMeta
      org.pentaho.di.trans.steps.columnexists.ColumnExistsMeta

All Implemented Interfaces:

Cloneable, StepAttributesInterface, StepMetaInterface

public class ColumnExistsMeta
extends BaseStepMeta
implements StepMetaInterface

Field Summary

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

loggingObject, STEP_ATTRIBUTES_FILE

Constructor Summary

ColumnExistsMeta()

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.
DatabaseMeta	getDatabase()
String	getDynamicColumnnameField()
String	getDynamicTablenameField()
void	getFields(RowMetaInterface inputRowMeta, String name, RowMetaInterface[] info, StepMeta nextStep, VariableSpace space) Get the fields that are emitted by this step
String	getResultFieldName()
String	getSchemaname()
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	getTablename()
DatabaseMeta[]	getUsedDatabaseConnections() This method returns all the database connections that are used by the step.
String	getXML() Produces the XML string that describes this step's information.
boolean	isTablenameInField()
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	setDatabase(DatabaseMeta database)
void	setDefault() Set default values
void	setDynamicColumnnameField(String columnnamefield)
void	setDynamicTablenameField(String tablenamefield)
void	setResultFieldName(String resultfieldname)
void	setSchemaname(String schemaname)
void	setTablename(String tablename)
void	setTablenameInField(boolean istablenameInfield)
boolean	supportsErrorHandling()

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

analyseImpact, cancelQueries, excludeFromCopyDistributeVerification, excludeFromRowLayoutVerification, 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, getUsedLibraries, getXmlCode, handleStreamSelection, hasChanged, hasRepositoryReferences, isBasic, isDebug, isDetailed, isRowLevel, logBasic, logBasic, logDebug, logDebug, logDetailed, logDetailed, logError, logError, logError, logMinimal, logMinimal, logRowlevel, logRowlevel, lookupRepositoryReferences, resetStepIoMeta, searchInfoAndTargetSteps, setChanged, setChanged, setParentStepMeta

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, excludeFromRowLayoutVerification, exportResources, getDialogClassName, getOptionalStreams, getParentStepMeta, getRequiredFields, getResourceDependencies, getSQLStatements, getStepIOMeta, getStepMetaInjectionInterface, getSupportedTransformationTypes, getTableFields, getUsedArguments, getUsedLibraries, handleStreamSelection, hasRepositoryReferences, lookupRepositoryReferences, resetStepIoMeta, searchInfoAndTargetSteps, setParentStepMeta

Constructor Detail

ColumnExistsMeta

public ColumnExistsMeta()

Method Detail

getDatabase

public DatabaseMeta getDatabase()

Returns:

Returns the database.

setDatabase

public void setDatabase(DatabaseMeta database)

Parameters:

database - The database to set.

getDynamicTablenameField

public String getDynamicTablenameField()

Returns:

Returns the tablenamefield.

getTablename

public String getTablename()

Returns:

Returns the tablename.

setTablename

public void setTablename(String tablename)

Parameters:

tablename - The tablename to set.

getSchemaname

public String getSchemaname()

Returns:

Returns the schemaname.

setSchemaname

public void setSchemaname(String schemaname)

Parameters:

schemaname - The schemaname to set.

setDynamicTablenameField

public void setDynamicTablenameField(String tablenamefield)

Parameters:

tablenamefield - The tablenamefield to set.

getDynamicColumnnameField

public String getDynamicColumnnameField()

Returns:

Returns the columnnamefield.

setDynamicColumnnameField

public void setDynamicColumnnameField(String columnnamefield)

Parameters:

columnnamefield - The columnnamefield to set.

getResultFieldName

public String getResultFieldName()

Returns:

Returns the resultName.

setResultFieldName

public void setResultFieldName(String resultfieldname)

Parameters:

resultfieldname - The resultfieldname to set.

isTablenameInField

public boolean isTablenameInField()

setTablenameInField

public void setTablenameInField(boolean istablenameInfield)

Parameters:

istablenameInfieldin - the istablenameInfield 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

getFields

public void getFields(RowMetaInterface inputRowMeta,
                      String name,
                      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:

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

name - 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.

getXML

public String getXML()

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.

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)

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

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.

getUsedDatabaseConnections

public DatabaseMeta[] getUsedDatabaseConnections()

Description copied from class: BaseStepMeta

This method returns all the database connections that are used by the step.

Specified by:

getUsedDatabaseConnections in interface StepMetaInterface

Overrides:

getUsedDatabaseConnections in class BaseStepMeta

Returns:

an array of database connections meta-data. Return an empty array if no connections are used.

supportsErrorHandling

public boolean supportsErrorHandling()

Specified by:

supportsErrorHandling in interface StepMetaInterface

Overrides:

supportsErrorHandling in class BaseStepMeta

Returns:

true if this step supports error "reporting" on rows: the ability to send rows to a certain target step.