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Elasticsearch subproject :server

There is a newer version: 8.13.4

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

package org.elasticsearch.search.lookup;

import org.apache.lucene.index.LeafReaderContext;

import java.util.HashMap;
import java.util.Map;

import static java.util.Collections.unmodifiableMap;

/**
 * Per-segment version of {@link SearchLookup}.
 */
public class LeafSearchLookup {

    private final LeafReaderContext ctx;
    private final LeafDocLookup docMap;
    private final SourceLookup sourceLookup;
    private final LeafStoredFieldsLookup fieldsLookup;
    private final Map asMap;

    public LeafSearchLookup(LeafReaderContext ctx, LeafDocLookup docMap, SourceLookup sourceLookup, LeafStoredFieldsLookup fieldsLookup) {
        this.ctx = ctx;
        this.docMap = docMap;
        this.sourceLookup = sourceLookup;
        this.fieldsLookup = fieldsLookup;

        Map asMap = new HashMap<>(4);
        asMap.put("doc", docMap);
        asMap.put("_doc", docMap);
        asMap.put("_source", sourceLookup);
        asMap.put("_fields", fieldsLookup);
        this.asMap = unmodifiableMap(asMap);
    }

    public Map asMap() {
        return this.asMap;
    }

    public SourceLookup source() {
        return this.sourceLookup;
    }

    public LeafStoredFieldsLookup fields() {
        return this.fieldsLookup;
    }

    public LeafDocLookup doc() {
        return this.docMap;
    }

    public void setDocument(int docId) {
        docMap.setDocument(docId);
        sourceLookup.setSegmentAndDocument(ctx, docId);
        fieldsLookup.setDocument(docId);
    }
}