com.networknt.jsonoverlay.EnumOverlay Maven / Gradle / Ivy

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A fork of RepreZen JsonOverlay with all dependencies and code generation removed

There is a newer version: 2.1.36

/*********************************************************************
 *  Copyright (c) 2017 ModelSolv, Inc. and others.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 *  Contributors:
 *     ModelSolv, Inc.
 *     - initial API and implementation and/or initial documentation
 **********************************************************************/
package com.networknt.jsonoverlay;

import com.fasterxml.jackson.databind.JsonNode;

public abstract class EnumOverlay> extends ScalarOverlay {

	private Class enumClass = null;

	protected EnumOverlay(JsonNode json, JsonOverlay parent, OverlayFactory factory, ReferenceManager refMgr) {
		super(json, parent, factory, refMgr);
	}

	protected EnumOverlay(V value, JsonOverlay parent, OverlayFactory factory, ReferenceManager refMgr) {
		super(value, parent, factory, refMgr);
		this.enumClass = getEnumClass();
	}

	@Override
	protected V _fromJson(JsonNode json) {
		if (!json.isTextual()) {
			return null;
		}
		if (enumClass == null) {
			enumClass = getEnumClass();
		}
		try {
			return Enum.valueOf(enumClass, json.asText());
		} catch (IllegalArgumentException e) {
			return null;
		}
	}

	@Override
	protected JsonNode _toJsonInternal(SerializationOptions options) {
		return value != null ? _jsonScalar(value.name()) : _jsonMissing();
	}

	protected abstract Class getEnumClass();
}