Class UnivariateStatsMeta

    • Constructor Detail

      • UnivariateStatsMeta

        public UnivariateStatsMeta()
        Creates a new UnivariateStatsMeta instance.
    • Method Detail

      • getInputFieldMetaFunctions

        public UnivariateStatsMetaFunction[] getInputFieldMetaFunctions()
        Get the stats to be computed for the input fields
        an UnivariateStatsMetaFunction[] value
      • getNumFieldsToProcess

        public int getNumFieldsToProcess()
        Returns how many UnivariateStatsMetaFunctions are currently being used. Each UnivariateStatsMetaFunction represents an input field to be processed along with the user-requested stats to compute for it. The same input field may occur in more than one UnivariateStatsMetaFunction as more than one percentile may be required.
        the number of non-unique input fields
      • setInputFieldMetaFunctions

        public void setInputFieldMetaFunctions​(UnivariateStatsMetaFunction[] mf)
        Set the stats to be computed for the input fields
        mf - an array of UnivariateStatsMetaFunctions
      • allocate

        public void allocate​(int nrStats)
        Allocate space for stats to compute
        nrStats - the number of UnivariateStatsMetaFunctions to allocate
      • loadXML

        public void loadXML​(Node stepnode,
                            List<org.pentaho.di.core.database.DatabaseMeta> databases,
                            org.pentaho.metastore.api.IMetaStore metaStore)
                     throws org.pentaho.di.core.exception.KettleXMLException
        Loads the meta data for this (configured) step from XML.
        Specified by:
        loadXML in interface StepMetaInterface
        loadXML in class BaseStepMeta
        stepnode - the step to load
        databases - The available list of databases to reference to
        metaStore - the metastore to optionally load external reference metadata from
        org.pentaho.di.core.exception.KettleXMLException - if an error occurs
      • equals

        public boolean equals​(Object obj)
        Check for equality
        equals in class Object
        obj - an Object to compare with
        true if equal to the supplied object
      • hashCode

        public int hashCode()
        hashCode in class Object
      • setDefault

        public void setDefault()
        Set the default state of the meta data?
        Specified by:
        setDefault in interface StepMetaInterface
      • readRep

        public void readRep​(Repository rep,
                            org.pentaho.metastore.api.IMetaStore metaStore,
                            org.pentaho.di.repository.ObjectId id_step,
                            List<org.pentaho.di.core.database.DatabaseMeta> databases)
                     throws org.pentaho.di.core.exception.KettleException
        Description copied from interface: StepMetaInterface
        Read the steps information from a Kettle repository
        Specified by:
        readRep in interface StepMetaInterface
        readRep in class BaseStepMeta
        rep - The repository to read from
        metaStore - The MetaStore to read external information from
        id_step - The step ID
        databases - The databases to reference
        org.pentaho.di.core.exception.KettleException - When an unexpected error occurred (database, network, etc)
      • saveRep

        public void saveRep​(Repository rep,
                            org.pentaho.metastore.api.IMetaStore metaStore,
                            org.pentaho.di.repository.ObjectId id_transformation,
                            org.pentaho.di.repository.ObjectId id_step)
                     throws org.pentaho.di.core.exception.KettleException
        Save this step's meta data to a repository
        Specified by:
        saveRep in interface StepMetaInterface
        saveRep in class BaseStepMeta
        rep - the repository to save to
        metaStore - the MetaStore to save to
        id_transformation - transformation id
        id_step - step id
        org.pentaho.di.core.exception.KettleException - if an error occurs
      • getFields

        public void getFields​(org.pentaho.di.core.row.RowMetaInterface row,
                              String origin,
                              org.pentaho.di.core.row.RowMetaInterface[] info,
                              StepMeta nextStep,
                              org.pentaho.di.core.variables.VariableSpace space,
                              Repository repository,
                              org.pentaho.metastore.api.IMetaStore metaStore)
                       throws org.pentaho.di.core.exception.KettleStepException
        Description copied from class: BaseStepMeta
        Gets the fields.
        Specified by:
        getFields in interface StepMetaInterface
        getFields in class BaseStepMeta
        row - the input row meta that is modified in this method to reflect the output row metadata of the step
        origin - Name of the step to use as input for the origin field in the values
        info - Fields used as extra lookup information
        nextStep - the next step that is targeted
        space - the space The variable space to use to replace variables
        repository - the repository to use to load Kettle metadata objects impacting the output fields
        metaStore - the MetaStore to use to load additional external data or metadata impacting the output fields
        org.pentaho.di.core.exception.KettleStepException - the kettle step exception
      • check

        public void check​(List<org.pentaho.di.core.CheckResultInterface> remarks,
                          TransMeta transmeta,
                          StepMeta stepMeta,
                          org.pentaho.di.core.row.RowMetaInterface prev,
                          String[] input,
                          String[] output,
                          org.pentaho.di.core.row.RowMetaInterface info,
                          org.pentaho.di.core.variables.VariableSpace space,
                          Repository repository,
                          org.pentaho.metastore.api.IMetaStore metaStore)
        Check the settings of this step and put findings in a remarks list.
        Specified by:
        check in interface StepMetaInterface
        check in class BaseStepMeta
        remarks - the list to put the remarks in. see org.pentaho.di.core.CheckResult
        transmeta - the transform meta data
        stepMeta - the step meta data
        prev - the fields coming from a previous step
        input - the input step names
        output - the output step names
        info - the fields that are used as information by the step
        space - the variable space to resolve variable expressions with
        repository - the repository to use to load Kettle metadata objects impacting the output fields
        metaStore - the MetaStore to use to load additional external data or metadata impacting the output fields
      • getStep

        public StepInterface getStep​(StepMeta stepMeta,
                                     StepDataInterface stepDataInterface,
                                     int cnr,
                                     TransMeta tr,
                                     Trans trans)
        Get the executing step, needed by Trans to launch a step.
        Specified by:
        getStep in interface StepMetaInterface
        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 number to get.
        tr - the transformation info.
        trans - the launching transformation
        a StepInterface value
      • getStepData

        public StepDataInterface getStepData()
        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
        a StepDataInterface value