Class InstanceJoiner

    • Constructor Detail

      • InstanceJoiner

        public InstanceJoiner()
        Setup the initial states of the member variables
    • Method Detail

      • inputFormat

        public boolean inputFormat​(Instances instanceInfo)
        Sets the format of the input instances. If the filter is able to determine the output format before seeing any input instances, it does so here. This default implementation assumes the output format is determined when batchFinished() is called.
        Parameters:
        instanceInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).
        Returns:
        true if the outputFormat may be collected immediately
      • outputFormat

        public Instances outputFormat()
                               throws java.lang.Exception
        Gets the format of the output instances. This should only be called after input() or batchFinished() has returned true.
        Specified by:
        outputFormat in interface InstanceProducer
        Returns:
        an Instances object containing the output instance structure only.
        Throws:
        java.lang.Exception - if no input structure has been defined (or the output format hasn't been determined yet)
      • input

        public boolean input​(Instance instance)
                      throws java.lang.Exception
        Throws:
        java.lang.Exception
      • batchFinished

        public void batchFinished()
                           throws java.lang.Exception
        Signify that this batch of input to the filter is finished. If the filter requires all instances prior to filtering, output() may now be called to retrieve the filtered instances. Any subsequent instances filtered should be filtered based on setting obtained from the first batch (unless the inputFormat has been re-assigned or new options have been set). This default implementation assumes all instance processing occurs during inputFormat() and input().
        Throws:
        java.lang.Exception - if no input structure has been defined
      • outputPeek

        public Instance outputPeek()
                            throws java.lang.Exception
        Output an instance after filtering but do not remove from the output queue.
        Specified by:
        outputPeek in interface InstanceProducer
        Returns:
        the instance that has most recently been filtered (or null if the queue is empty).
        Throws:
        java.lang.Exception - if no input structure has been defined
      • setDebug

        public void setDebug​(boolean debug)
      • getDebug

        public boolean getDebug()
      • instanceProduced

        public void instanceProduced​(InstanceEvent e)