public TypeInfo[] getAllTypeInfos() throws HiveException {
    final int size = initialTypeInfos.size() + ocm.outputColCount;

    TypeInfo[] result = new TypeInfo[size];
    for (int i = 0; i < size; i++) {
      result[i] = getTypeInfo(i);
    }
    return result;
  }
Context class for vectorization execution.
Main role is to map column names to column indices and serves as a
factory class for building vectorized expressions out of descriptors.
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorizationContext.java