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Dson核心模块
There is a newer version: 2.2.0
/*
 * Copyright 2023-2024 wjybxx([email protected])
 *
 * Licensed 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 cn.wjybxx.dson;

import cn.wjybxx.dson.internal.ValuesPolicy;

import javax.annotation.Nonnull;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * 1.Header不可以再持有header，否则陷入死循环
 * 2.Header的结构应该是简单清晰的，可简单编解码
 *
 * @author wjybxx
 * date - 2023/5/27
 */
@SuppressWarnings("unused")
public class DsonHeader extends AbstractDsonObject {

    public DsonHeader() {
        super(new LinkedHashMap<>(4), ValuesPolicy.SOURCE);
    }

    public DsonHeader(Map valueMap) {
        super(valueMap, ValuesPolicy.COPY);
    }

    private DsonHeader(Map valueMap, ValuesPolicy policy) {
        super(valueMap, policy);
    }

    public static  DsonHeader toImmutable(DsonHeader src) {
        return new DsonHeader<>(src.valueMap, ValuesPolicy.IMMUTABLE);
    }

    public static  DsonHeader empty() {
        return new DsonHeader<>(Map.of(), ValuesPolicy.IMMUTABLE);
    }

    //

    @Nonnull
    @Override
    public final DsonType getDsonType() {
        return DsonType.HEADER;
    }

    /** @return this */
    @Override
    public DsonHeader append(K key, DsonValue value) {
        put(key, value);
        return this;
    }

    @Override
    public String toString() {
        return "DsonHeader{" +
                "valueMap=" + valueMap +
                '}';
    }
//

    // header常见属性名
    public static final String NAMES_CLASS_NAME = "clsName";
    public static final String NAMES_COMP_CLASS_NAME = "compClsName";
    public static final String NAMES_CLASS_ID = "clsId";
    public static final String NAMES_COMP_CLASS_ID = "compClsId";
    public static final String NAMES_LOCAL_ID = "localId";
    public static final String NAMES_TAGS = "tags";
    public static final String NAMES_NAMESPACE = "ns";

    public static final int NUMBERS_CLASS_NAME = DsonLites.makeFullNumberZeroIdep(0);
    public static final int NUMBERS_COMP_CLASS_NAME = DsonLites.makeFullNumberZeroIdep(1);
    public static final int NUMBERS_CLASS_ID = DsonLites.makeFullNumberZeroIdep(2);
    public static final int NUMBERS_COMP_CLASS_ID = DsonLites.makeFullNumberZeroIdep(3);
    public static final int NUMBERS_LOCAL_ID = DsonLites.makeFullNumberZeroIdep(4);
    public static final int NUMBERS_TAGS = DsonLites.makeFullNumberZeroIdep(5);
    public static final int NUMBERS_NAMESPACE = DsonLites.makeFullNumberZeroIdep(6);
}