/*
 * 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.
 */

package org.apache.cassandra.index.accord;

import java.util.Collections;
import java.util.EnumMap;
import java.util.Map;

import accord.primitives.TxnId;

public class Segment
{
    public static final Segment EMPTY = new Segment(Collections.emptyMap());

    public final Map<Key, Metadata> groups;

    public Segment(Map<Key, Metadata> groups)
    {
        this.groups = groups;
    }

    public static class ComponentMetadata
    {
        public final long offset, endOffset;

        public ComponentMetadata(long offset, long endOffset)
        {
            this.offset = offset;
            this.endOffset = endOffset;
        }
    }

    public static class Metadata
    {
        public final EnumMap<IndexDescriptor.IndexComponent, ComponentMetadata> metas;
        public final byte[] minTerm, maxTerm;
        public final TxnId minTxnId;
        public final TxnId maxTxnId;
        public final TxnId maxRxId;

        public Metadata(EnumMap<IndexDescriptor.IndexComponent, ComponentMetadata> metas,
                        byte[] minTerm, byte[] maxTerm,
                        TxnId minTxnId, TxnId maxTxnId, TxnId maxRxId)
        {
            this.metas = metas;
            this.minTerm = minTerm;
            this.maxTerm = maxTerm;
            this.minTxnId = minTxnId;
            this.maxTxnId = maxTxnId;
            this.maxRxId = maxRxId;
        }
    }
}
