/** * 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. * * @return true if there are instances pending output * @throws IllegalStateException if no input structure has been defined */ @Override public boolean batchFinished() { if (getInputFormat() == null) { throw new IllegalStateException("No input instance format defined"); } if ((m_Indices == null) && (getInputFormat().classAttribute().isNumeric())) { computeAverageClassValues(); setOutputFormat(); // Convert pending input instances for (int i = 0; i < getInputFormat().numInstances(); i++) { convertInstance(getInputFormat().instance(i)); } } flushInput(); m_NewBatch = true; return (numPendingOutput() != 0); }