src/Lucene.Net.Core/Index/InvertedDocConsumerPerField.cs

namespace Lucene.Net.Index
{
    /*
     * 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.
     */

    public abstract class InvertedDocConsumerPerField
    {
        // Called once per field, and is given all IndexableField
        // occurrences for this field in the document.  Return
        // true if you wish to see inverted tokens for these
        // fields:
        internal abstract bool Start(IndexableField[] fields, int count);

        // Called before a field instance is being processed
        internal abstract void Start(IndexableField field);

        // Called once per inverted token
        internal abstract void Add();

        // Called once per field per document, after all IndexableFields
        // are inverted
        internal abstract void Finish();

        // Called on hitting an aborting exception
        internal abstract void Abort();
    }
}