2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.client.editor.rest.handling.bean;
23 import java.lang.reflect.Field;
24 import java.lang.reflect.Method;
27 * The base class for Beans.
29 public abstract class BeanBase {
30 // Recurring string constants
31 private static final String PROBLEM_RETRIEVING_FIELD_PREFIX = "Problem retrieving field called ('";
32 private static final String JSON_BEAN_SUFFIX = "') from JSON bean ";
35 * Gets a named field from the bean.
37 * @param field the field name
38 * @return the value for the field
40 public String get(final String field) {
41 // CHECKSTYLE:OFF: MagicNumber
42 // use getter preferably
43 for (final Method method : this.getClass().getMethods()) {
44 if ((method.getName().startsWith("get")) && (method.getName().length() == (field.length() + 3))) {
45 if (method.getName().toLowerCase().endsWith(field.toLowerCase())) {
47 return (String) method.invoke(this);
48 } catch (final Exception e) {
49 throw new IllegalArgumentException(
50 PROBLEM_RETRIEVING_FIELD_PREFIX + field + JSON_BEAN_SUFFIX + this, e);
58 final Field f = this.getClass().getDeclaredField(field);
60 f.setAccessible(true);
61 return (String) (f.get(this));
63 } catch (final Exception e) {
64 throw new IllegalArgumentException(
65 PROBLEM_RETRIEVING_FIELD_PREFIX + field + JSON_BEAN_SUFFIX + this, e);
68 throw new IllegalArgumentException(PROBLEM_RETRIEVING_FIELD_PREFIX + field + JSON_BEAN_SUFFIX + this);