com.liferay.batch.engine.internal.reader.BatchEngineImportTaskItemReaderUtil Maven / Gradle / Ivy

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Liferay Batch Engine Service
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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.batch.engine.internal.reader;

import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.databind.ObjectMapper;

import com.liferay.petra.string.StringPool;
import com.liferay.portal.kernel.util.Validator;

import java.io.Serializable;

import java.lang.reflect.Field;

import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

/**
 * @author Ivica Cardic
 */
public class BatchEngineImportTaskItemReaderUtil {

	public static  T convertValue(
			Class itemClass, Map fieldNameValueMap)
		throws ReflectiveOperationException {

		T item = itemClass.newInstance();

		for (Map.Entry entry : fieldNameValueMap.entrySet()) {
			String name = entry.getKey();

			Field field = null;

			for (Field declaredField : itemClass.getDeclaredFields()) {
				if (name.equals(declaredField.getName()) ||
					Objects.equals(
						StringPool.UNDERLINE + name, declaredField.getName())) {

					field = declaredField;

					break;
				}
			}

			if (field != null) {
				field.setAccessible(true);

				field.set(
					item,
					_objectMapper.convertValue(
						entry.getValue(), field.getType()));

				continue;
			}

			for (Field declaredField : itemClass.getDeclaredFields()) {
				JsonAnySetter[] annotationsByType =
					declaredField.getAnnotationsByType(JsonAnySetter.class);

				if (annotationsByType.length > 0) {
					field = declaredField;

					break;
				}
			}

			if (field == null) {
				throw new NoSuchFieldException(entry.getKey());
			}

			field.setAccessible(true);

			Map map = (Map)field.get(item);

			map.put(entry.getKey(), entry.getValue());
		}

		return item;
	}

	public static void handleMapField(
		String fieldName, Map fieldNameValueMap,
		int lastDelimiterIndex, String value) {

		String key = fieldName.substring(lastDelimiterIndex + 1);

		fieldName = fieldName.substring(0, lastDelimiterIndex);

		Map valueMap =
			(Map)fieldNameValueMap.get(fieldName);

		if (valueMap == null) {
			valueMap = new HashMap<>();

			fieldNameValueMap.put(fieldName, valueMap);
		}

		valueMap.put(key, value);
	}

	public static Map mapFieldNames(
		Map fieldNameMappingMap,
		Map fieldNameValueMap) {

		if ((fieldNameMappingMap == null) || fieldNameMappingMap.isEmpty()) {
			return fieldNameValueMap;
		}

		Map targetFieldNameValueMap = new HashMap<>();

		for (Map.Entry entry : fieldNameValueMap.entrySet()) {
			String targetFieldName = (String)fieldNameMappingMap.get(
				entry.getKey());

			if (Validator.isNotNull(targetFieldName)) {
				targetFieldNameValueMap.put(targetFieldName, entry.getValue());
			}
		}

		return targetFieldNameValueMap;
	}

	private static final ObjectMapper _objectMapper = new ObjectMapper();

}