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

Example 11 with LazyMap

use of org.apache.hadoop.hive.serde2.lazy.LazyMap 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();
    }
}