/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

parcel Lucy;

/** Write postings data to an index.
 *
 * PostingListWriter writes frequency and positional data files, plus feeds
 * data to LexiconWriter.
 */

class Lucy::Index::PostingListWriter cnick PListWriter
    inherits Lucy::Index::DataWriter {

    LexiconWriter   *lex_writer;
    VArray          *pools;
    MemoryPool      *mem_pool;
    OutStream       *lex_temp_out;
    OutStream       *post_temp_out;
    OutStream       *skip_out;
    uint32_t         mem_thresh;

    inert int32_t current_file_format;

    inert incremented PostingListWriter*
    new(Schema *schema, Snapshot *snapshot, Segment *segment,
        PolyReader *polyreader, LexiconWriter *lex_writer);

    inert PostingListWriter*
    init(PostingListWriter *self, Schema *schema, Snapshot *snapshot,
         Segment *segment, PolyReader *polyreader, LexiconWriter *lex_writer);

    /** Test only. */
    inert void
    set_default_mem_thresh(size_t mem_thresh);

    public void
    Add_Inverted_Doc(PostingListWriter *self, Inverter *inverter,
                     int32_t doc_id);

    public void
    Add_Segment(PostingListWriter *self, SegReader *reader,
                I32Array *doc_map = NULL);

    public void
    Finish(PostingListWriter *self);

    public int32_t
    Format(PostingListWriter *self);

    public void
    Destroy(PostingListWriter *self);
}