Examples with LazyArray org.apache.hadoop.hive.serde2.lazy.LazyArray used on opensource projects

Example 6 with LazyArray

use of org.apache.hadoop.hive.serde2.lazy.LazyArray in project cdap by caskdata.

the class ObjectSerializer method fromLazyObject.

private Object fromLazyObject(TypeInfo type, Object data) {
    if (data == null) {
        return null;
    }
    switch(type.getCategory()) {
        case PRIMITIVE:
            Writable writable = ((LazyPrimitive) data).getWritableObject();
            return fromWritable(writable);
        case LIST:
            ListTypeInfo listType = (ListTypeInfo) type;
            TypeInfo listElementType = listType.getListElementTypeInfo();
            List<Object> list = ((LazyArray) data).getList();
            if (list.isEmpty()) {
                return ImmutableList.of();
            }
            Object[] arrayContent = new Object[list.size()];
            for (int i = 0; i < arrayContent.length; i++) {
                arrayContent[i] = fromLazyObject(listElementType, list.get(i));
            }
            return arrayContent;
        case MAP:
            MapTypeInfo mapType = (MapTypeInfo) type;
            Map<Object, Object> mapContent = Maps.newConcurrentMap();
            Map<Object, Object> map = ((LazyMap) data).getMap();
            for (Map.Entry<Object, Object> entry : map.entrySet()) {
                mapContent.put(fromLazyObject(mapType.getMapKeyTypeInfo(), entry.getKey()), fromLazyObject(mapType.getMapValueTypeInfo(), entry.getValue()));
            }
            return mapContent;
        case STRUCT:
            StructTypeInfo structType = (StructTypeInfo) type;
            List<TypeInfo> info = structType.getAllStructFieldTypeInfos();
            List<String> names = structType.getAllStructFieldNames();
            Map<String, Object> structMap = Maps.newConcurrentMap();
            List<Object> struct = ((LazyStruct) data).getFieldsAsList();
            for (int structIndex = 0; structIndex < info.size(); structIndex++) {
                structMap.put(names.get(structIndex), fromLazyObject(info.get(structIndex), struct.get(structIndex)));
            }
            return structMap;
        case UNION:
            throw new UnsupportedOperationException("union not yet supported");
        default:
            return data.toString();
    }
}