io.gravitee.elasticsearch.model.jackson.TotalHitsDeserializer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gravitee-common-elasticsearch Show documentation

There is a newer version: 6.2.0

Show newest version

/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * 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 io.gravitee.elasticsearch.model.jackson;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import io.gravitee.elasticsearch.model.TotalHits;

import java.io.IOException;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
public class TotalHitsDeserializer extends StdDeserializer {

    public TotalHitsDeserializer() {
        this(null);
    }

    public TotalHitsDeserializer(Class vc) {
        super(vc);
    }

    @Override
    public TotalHits deserialize(JsonParser jp, DeserializationContext ctxt)
            throws IOException {
        JsonNode node = jp.getCodec().readTree(jp);

        if (node.isNumber()) {
            return new TotalHits(node.longValue());
        } else if (node.isObject()) {
            return new TotalHits(node.get("value").longValue());
        }

        throw new IllegalStateException();
    }
}