org.eclipse.leshan.demo.bsserver.json.EnumSetBindingModeDeserializer Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright (c) 2021 Orange.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * and Eclipse Distribution License v1.0 which accompany this distribution.
 *
 * The Eclipse Public License is available at
 *    http://www.eclipse.org/legal/epl-v20.html
 * and the Eclipse Distribution License is available at
 *    http://www.eclipse.org/org/documents/edl-v10.html.
 *
 * Contributors:
 *     Orange - keep one JSON dependency
 *******************************************************************************/
package org.eclipse.leshan.demo.bsserver.json;

import java.io.IOException;
import java.util.EnumSet;

import org.eclipse.leshan.core.request.BindingMode;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.TreeNode;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.node.TextNode;

public class EnumSetBindingModeDeserializer extends JsonDeserializer> {
    @Override
    public EnumSet deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {

        TreeNode treeNode = p.getCodec().readTree(p);

        if (treeNode instanceof TextNode) {
            return BindingMode.parse(((TextNode) treeNode).asText());
        } else {
            return null;
        }
    }
}