@Override
  public VectorExpressionDescriptor.Descriptor getDescriptor() {

    // IMPORTANT NOTE: For Multi-AND, the VectorizationContext class will catch cases with 3 or
    //                 more parameters...

    return (new VectorExpressionDescriptor.Builder())
        .setMode(
            VectorExpressionDescriptor.Mode.FILTER)
        .setNumArguments(2)
        .setArgumentTypes(
            VectorExpressionDescriptor.ArgumentType.INT_FAMILY,
            VectorExpressionDescriptor.ArgumentType.INT_FAMILY)
        .setInputExpressionTypes(
            VectorExpressionDescriptor.InputExpressionType.COLUMN,
            VectorExpressionDescriptor.InputExpressionType.COLUMN).build();
  }
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