org.pentaho.di.trans.steps.tableinput
Class TableInputMeta

java.lang.Object
  org.pentaho.di.trans.step.BaseStepMeta
      org.pentaho.di.trans.steps.tableinput.TableInputMeta

All Implemented Interfaces:

Cloneable, StepAttributesInterface, StepMetaInterface

public class TableInputMeta
extends BaseStepMeta
implements StepMetaInterface

Field Summary

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

loggingObject, STEP_ATTRIBUTES_FILE

Constructor Summary

TableInputMeta()

Method Summary

void	analyseImpact(List<DatabaseImpact> impact, TransMeta transMeta, StepMeta stepMeta, RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info) Each step must be able to report on the impact it has on a database, table field, etc.
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	getDatabaseMeta()
void	getFields(RowMetaInterface row, String origin, RowMetaInterface[] info, StepMeta nextStep, VariableSpace space) Get the fields that are emitted by this step
StepMeta	getLookupFromStep() For compatibility, wraps around the standard step IO metadata
String	getRowLimit()
String	getSQL()
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.
StepIOMetaInterface	getStepIOMeta() Returns the Input/Output metadata for this step.
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	isExecuteEachInputRow()
boolean	isLazyConversionActive()
boolean	isVariableReplacementActive()
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	resetStepIoMeta() For steps that handle dynamic input (info) or output (target) streams, it is useful to be able to force the recreate the StepIoMeta definition.
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	setDatabaseMeta(DatabaseMeta database)
void	setDefault() Set default values
void	setExecuteEachInputRow(boolean oncePerRow)
void	setLazyConversionActive(boolean lazyConversionActive)
void	setLookupFromStep(StepMeta stepMeta) For compatibility, wraps around the standard step IO metadata
void	setRowLimit(String rowLimit)
void	setSQL(String sql)
void	setVariableReplacementActive(boolean variableReplacementActive)

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

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, 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, 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

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

Constructor Detail

TableInputMeta

public TableInputMeta()

Method Detail

isExecuteEachInputRow

public boolean isExecuteEachInputRow()

Returns:

Returns true if the step should be run per row

setExecuteEachInputRow

public void setExecuteEachInputRow(boolean oncePerRow)

Parameters:

oncePerRow - true if the step should be run per row

getDatabaseMeta

public DatabaseMeta getDatabaseMeta()

Returns:

Returns the database.

setDatabaseMeta

public void setDatabaseMeta(DatabaseMeta database)

Parameters:

database - The database to set.

getRowLimit

public String getRowLimit()

Returns:

Returns the rowLimit.

setRowLimit

public void setRowLimit(String rowLimit)

Parameters:

rowLimit - The rowLimit to set.

getSQL

public String getSQL()

Returns:

Returns the sql.

setSQL

public void setSQL(String sql)

Parameters:

sql - The sql 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 row,
                      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:

row - 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.

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

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.

analyseImpact

public void analyseImpact(List<DatabaseImpact> impact,
                          TransMeta transMeta,
                          StepMeta stepMeta,
                          RowMetaInterface prev,
                          String[] input,
                          String[] output,
                          RowMetaInterface info)
                   throws KettleStepException

Description copied from class: BaseStepMeta

Each step must be able to report on the impact it has on a database, table field, etc.

Specified by:

analyseImpact in interface StepMetaInterface

Overrides:

analyseImpact in class BaseStepMeta

Parameters:

impact - The list of impacts @see org.pentaho.di.transMeta.DatabaseImpact

transMeta - The transformation information

stepMeta - The step information

prev - The fields entering this step

input - The previous step names

output - The output step names

info - The fields used as information by this step

Throws:

KettleStepException

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.

isVariableReplacementActive

public boolean isVariableReplacementActive()

Returns:

Returns the variableReplacementActive.

setVariableReplacementActive

public void setVariableReplacementActive(boolean variableReplacementActive)

Parameters:

variableReplacementActive - The variableReplacementActive to set.

isLazyConversionActive

public boolean isLazyConversionActive()

Returns:

the lazyConversionActive

setLazyConversionActive

public void setLazyConversionActive(boolean lazyConversionActive)

Parameters:

lazyConversionActive - the lazyConversionActive to set

getStepIOMeta

public StepIOMetaInterface getStepIOMeta()

Returns the Input/Output metadata for this step. The generator step only produces output, does not accept input!

Specified by:

getStepIOMeta in interface StepMetaInterface

Overrides:

getStepIOMeta in class BaseStepMeta

resetStepIoMeta

public void resetStepIoMeta()

Description copied from interface: StepMetaInterface

For steps that handle dynamic input (info) or output (target) streams, it is useful to be able to force the recreate the StepIoMeta definition. By default this definition is cached.

Specified by:

resetStepIoMeta in interface StepMetaInterface

Overrides:

resetStepIoMeta in class BaseStepMeta

setLookupFromStep

public void setLookupFromStep(StepMeta stepMeta)

For compatibility, wraps around the standard step IO metadata

Parameters:

stepMeta - The step where you read lookup data from

getLookupFromStep

public StepMeta getLookupFromStep()

For compatibility, wraps around the standard step IO metadata

Returns:

The step where you read lookup data from