co.elastic.clients.json.ObjectBuilderDeserializer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch-java Show documentation
Elasticsearch Java API Client
There is a newer version: 8.15.1
/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. 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 co.elastic.clients.json;

import co.elastic.clients.util.ObjectBuilder;
import jakarta.json.stream.JsonParser;

import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;

/**
 * An object deserializer based on an {@link ObjectBuilder}.
 */
public class ObjectBuilderDeserializer> extends DelegatingDeserializer {

    private final JsonpDeserializer builderDeserializer;

    public static , T> JsonpDeserializer lazy(
        Supplier builderCtor,
        Consumer> builderDeserializerSetup
    ) {
        return new LazyDeserializer<>(() -> {
            ObjectDeserializer builderDeser = new ObjectDeserializer(builderCtor);
            builderDeserializerSetup.accept(builderDeser);
            return new ObjectBuilderDeserializer<>(builderDeser);
        });
    }

    public static  JsonpDeserializer lazy(
        Supplier builderCtor,
        Consumer> builderDeserializerSetup,
        Function buildFn
    ) {
        return new LazyDeserializer<>(() -> {
                ObjectDeserializer builderDeser = new ObjectDeserializer(builderCtor);
                builderDeserializerSetup.accept(builderDeser);
                return new BuildFunctionDeserializer<>(builderDeser, buildFn);
            });
    }

    public static > JsonpDeserializer createForObject(
        Supplier ctor,
        Consumer> configurer
    ) {
        ObjectDeserializer op = new ObjectDeserializer<>(ctor);
        configurer.accept(op);
        return new ObjectBuilderDeserializer<>(op);
    }

    public ObjectBuilderDeserializer(JsonpDeserializer builderDeserializer) {
        this.builderDeserializer = builderDeserializer;
    }

    @Override
    protected JsonpDeserializer unwrap() {
        return builderDeserializer;
    }

    @Override
    public T deserialize(JsonParser parser, JsonpMapper mapper) {
        ObjectBuilder builder = builderDeserializer.deserialize(parser, mapper);
        return builder == null ? null : builder.build();
    }

    @Override
    public T deserialize(JsonParser parser, JsonpMapper mapper, JsonParser.Event event) {
        ObjectBuilder builder = builderDeserializer.deserialize(parser, mapper, event);
        return builder == null ? null : builder.build();
    }
}