| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * |
| * 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. |
| */ |
| package com.opensymphony.xwork2.ognl; |
| |
| /** |
| * Helper class to build error messages. |
| */ |
| public class ErrorMessageBuilder { |
| |
| private final StringBuilder message = new StringBuilder(); |
| |
| public static ErrorMessageBuilder create() { |
| return new ErrorMessageBuilder(); |
| } |
| |
| private ErrorMessageBuilder() { |
| } |
| |
| public ErrorMessageBuilder errorSettingExpressionWithValue(String expr, Object value) { |
| appenExpression(expr); |
| if (value instanceof Object[]) { |
| appendValueAsArray((Object[]) value, message); |
| } else { |
| appendValue(value); |
| } |
| return this; |
| } |
| |
| private void appenExpression(String expr) { |
| message.append("Error setting expression '"); |
| message.append(expr); |
| message.append("' with value "); |
| } |
| |
| private void appendValue(Object value) { |
| message.append("'"); |
| message.append(value); |
| message.append("'"); |
| } |
| |
| private void appendValueAsArray(Object[] valueArray, StringBuilder msg) { |
| msg.append("["); |
| for (int index = 0; index < valueArray.length; index++) { |
| appendValue(valueArray[index]); |
| if (hasMoreElements(valueArray, index)) { |
| msg.append(", "); |
| } |
| } |
| msg.append("]"); |
| } |
| |
| private boolean hasMoreElements(Object[] valueArray, int index) { |
| return index < (valueArray.length + 1); |
| } |
| |
| public String build() { |
| return message.toString(); |
| } |
| |
| } |