@Override
  public void evaluate(VectorizedRowBatch batch) throws HiveException {
    childExpressions[0].evaluate(batch);
    for (int childIndex = 1; childIndex < childExpressions.length; childIndex++) {
      childExpressions[childIndex].evaluate(batch);
    }
  }
This class represents a non leaf binary operator in the expression tree.
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/FilterExprAndExpr.java