com.alibaba.fastjson.serializer.ArraySerializer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of fastjson-to-easyjson Show documentation

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

There is a newer version: 3.2.26

/*
 * Copyright 2019 the original author or authors.
 *
 * Licensed under the Apache, 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.gnu.org/licenses/lgpl-3.0.html
 *
 * 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 com.alibaba.fastjson.serializer;

import java.io.IOException;
import java.lang.reflect.Type;

/**
 * @author wenshao[[email protected]]
 */
public class ArraySerializer implements ObjectSerializer {

    private final Class componentType;
    private final ObjectSerializer compObjectSerializer;

    public ArraySerializer(Class componentType, ObjectSerializer compObjectSerializer) {
        this.componentType = componentType;
        this.compObjectSerializer = compObjectSerializer;
    }

    public final void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features)
            throws IOException {
        SerializeWriter out = serializer.out;

        if (object == null) {
            out.writeNull(SerializerFeature.WriteNullListAsEmpty);
            return;
        }

        Object[] array = (Object[]) object;
        int size = array.length;

        SerialContext context = serializer.context;
        serializer.setContext(context, object, fieldName, 0);

        try {
            out.append('[');
            for (int i = 0; i < size; ++i) {
                if (i != 0) {
                    out.append(',');
                }
                Object item = array[i];

                if (item == null) {
                    if (out.isEnabled(SerializerFeature.WriteNullStringAsEmpty) && object instanceof String[]) {
                        out.writeString("");
                    } else {
                        out.append("null");
                    }
                } else if (item.getClass() == componentType) {
                    compObjectSerializer.write(serializer, item, i, null, 0);
                } else {
                    ObjectSerializer itemSerializer = serializer.getObjectWriter(item.getClass());
                    itemSerializer.write(serializer, item, i, null, 0);
                }
            }
            out.append(']');
        } finally {
            serializer.context = context;
        }
    }
}