org.initialize4j.util.InitializationUtil.java Source code

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Here is the source code for org.initialize4j.util.InitializationUtil.java

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/**
 * Copyright 2010-2012 initialize4j.org
 *
 * <pre>
 * 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
 *
 * <pre>
 * 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.
 * </pre>
 */
package org.initialize4j.util;

import java.lang.reflect.Field;

import org.apache.commons.beanutils.PropertyUtils;
import org.initialize4j.service.InitializeException;

/**
 * Just a simple utility class wrapped around Apache Bean Utils to reduce the
 * need of always catching this huge amount of exceptions which might be thrown.
 *
 * @author <a href="hillger.t@gmail.com">hillger.t</a>
 */
public final class InitializationUtil {
    /**
     * Private constructor to prevent instances of this class.
     */
    private InitializationUtil() {
    }

    /**
     * Instantiates an object with the given class.
     *
     * @param <T>
     * @param clazz
     * @return
     * @throws InitializeException
     */
    public static <T> T instance(Class<T> clazz) {
        try {
            return clazz.newInstance();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Returns a field value for the given source object and provided
     * {@link Field} instance.
     *
     * @param src The object to to use.
     * @param fieldName The field name to get.
     * @return The value which can be retrieved.
     * @throws InitializeException
     */
    public static Object getProperty(Object src, String fieldName) {
        try {
            return PropertyUtils.getProperty(src, fieldName);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Sets a field value for the given source object and provided {@link Field}
     * instance.
     *
     * @param src The object to to use.
     * @param fieldName The field name to set.
     * @param value The value to set for field.
     * @throws InitializeException If an error occurs.
     */
    public static void setProperty(Object src, String fieldName, Object value) {
        try {
            PropertyUtils.setProperty(src, fieldName, value);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}