com.alibaba.fastjson.parser.deserializer.ResolveFieldDeserializer Maven / Gradle / Ivy

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Adapter alibaba fastjson to other json libraries. the fastjson version: 1.2.58

There is a newer version: 3.2.26

package com.alibaba.fastjson.parser.deserializer;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.parser.DefaultJSONParser;
import com.alibaba.fastjson.util.TypeUtils;

import java.lang.reflect.Array;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.List;
import java.util.Map;

@SuppressWarnings("rawtypes")
public final class ResolveFieldDeserializer extends FieldDeserializer {

    private final int index;
    private final List list;
    private final DefaultJSONParser parser;

    private final Object key;
    private final Map map;

    private final Collection collection;

    public ResolveFieldDeserializer(DefaultJSONParser parser, List list, int index) {
        super(null, null);
        this.parser = parser;
        this.index = index;
        this.list = list;

        key = null;
        map = null;

        collection = null;
    }

    public ResolveFieldDeserializer(Map map, Object index) {
        super(null, null);

        this.parser = null;
        this.index = -1;
        this.list = null;

        this.key = index;
        this.map = map;

        collection = null;
    }

    public ResolveFieldDeserializer(Collection collection) {
        super(null, null);

        this.parser = null;
        this.index = -1;
        this.list = null;

        key = null;
        map = null;

        this.collection = collection;
    }

    @Override
    @SuppressWarnings("unchecked")
    public void setValue(Object object, Object value) {
        if (map != null) {
            map.put(key, value);
            return;
        }

        if (collection != null) {
            collection.add(value);
            return;
        }

        list.set(index, value);

        if (list instanceof JSONArray) {
            JSONArray jsonArray = (JSONArray) list;
            Object array = jsonArray.getRelatedArray();

            if (array != null) {
                int arrayLength = Array.getLength(array);

                if (arrayLength > index) {
                    Object item;
                    if (jsonArray.getComponentType() != null) {
                        item = TypeUtils.cast(value, jsonArray.getComponentType(), parser.getConfig());
                    } else {
                        item = value;
                    }
                    Array.set(array, index, item);
                }
            }
        }
    }

    @Override
    public void parseField(DefaultJSONParser parser, Object object, Type objectType, Map fieldValues) {

    }

}