@Override
  public String toString() {
    StringBuilder builder = new StringBuilder();

    builder.append("HiveGeometryHelper(");
    builder.append("constant=" + isConstant + ";");
    builder.append(")");

    return builder.toString();
  }
Reads the corresponding geometry from the deferred object list
or returns the cached geometry if argument is constant.

@param args
@return
ql/src/java/org/apache/hadoop/hive/ql/udf/esri/HiveGeometryOIHelper.java