Package org.pentaho.di.trans.steps.memgroupby

Class MemoryGroupByMeta

    • Constructor Detail

      • MemoryGroupByMeta

        public MemoryGroupByMeta()

    • Method Detail

      • getAggregateField

        public String[] getAggregateField()
        Returns:
        Returns the aggregateField.

      • setAggregateField

        public void setAggregateField​(String[] aggregateField)
        Parameters:
        aggregateField - The aggregateField to set.

      • getAggregateType

        public int[] getAggregateType()
        Returns:
        Returns the aggregateType.

      • setAggregateType

        public void setAggregateType​(int[] aggregateType)
        Parameters:
        aggregateType - The aggregateType to set.

      • getGroupField

        public String[] getGroupField()
        Returns:
        Returns the groupField.

      • setGroupField

        public void setGroupField​(String[] groupField)
        Parameters:
        groupField - The groupField to set.

      • getSubjectField

        public String[] getSubjectField()
        Returns:
        Returns the subjectField.

      • setSubjectField

        public void setSubjectField​(String[] subjectField)
        Parameters:
        subjectField - The subjectField to set.

      • getValueField

        public String[] getValueField()
        Returns:
        Returns the valueField.

      • setValueField

        public void setValueField​(String[] valueField)
        Parameters:
        valueField - The valueField to set.

      • 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
        Description copied from interface: StepMetaInterface
        Load the values for this step from an XML Node
        Specified by:
        loadXML in interface StepMetaInterface
        Overrides:
        loadXML in class BaseStepMeta
        Parameters:
        stepnode - the Node to get the info from
        databases - The available list of databases to reference to
        metaStore - the metastore to optionally load external reference metadata from
        Throws:
        org.pentaho.di.core.exception.KettleXMLException - When an unexpected XML error occurred. (malformed etc.)

      • allocate

        public void allocate​(int sizegroup,
                     int nrfields)

      • getType

        public static final int getType​(String desc)

      • getTypeDesc

        public static final String getTypeDesc​(int i)

      • getTypeDescLong

        public static final String getTypeDescLong​(int i)

      • getFields

        public void getFields​(org.pentaho.di.core.row.RowMetaInterface r,
                      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)
        Description copied from class: BaseStepMeta
        Gets the fields.
        Specified by:
        getFields in interface StepMetaInterface
        Overrides:
        getFields in class BaseStepMeta
        Parameters:
        r - 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

      • 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,
                    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
        Overrides:
        readRep in class BaseStepMeta
        Parameters:
        rep - The repository to read from
        metaStore - The MetaStore to read external information from
        id_step - The step ID
        databases - The databases to reference
        Throws:
        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
        Description copied from interface: StepMetaInterface
        Save the steps data into a Kettle repository
        Specified by:
        saveRep in interface StepMetaInterface
        Overrides:
        saveRep in class BaseStepMeta
        Parameters:
        rep - The Kettle repository to save to
        metaStore - the metaStore to optionally write to
        id_transformation - The transformation ID
        id_step - The step ID
        Throws:
        org.pentaho.di.core.exception.KettleException - When an unexpected error occurred (database, network, etc)

      • 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)
        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
        Overrides:
        check in class BaseStepMeta
        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
        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 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.

      • isAlwaysGivingBackOneRow

        public boolean isAlwaysGivingBackOneRow()
        Returns:
        the alwaysGivingBackOneRow

      • setAlwaysGivingBackOneRow

        public void setAlwaysGivingBackOneRow​(boolean alwaysGivingBackOneRow)
        Parameters:
        alwaysGivingBackOneRow - the alwaysGivingBackOneRow to set

      • afterInjectionSynchronization

        public void afterInjectionSynchronization()
        If we use injection we can have different arrays lengths. We need synchronize them for consistency behavior with UI