| /* |
| * 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 org.apache.logging.log4j.message; |
| |
| import org.apache.logging.log4j.util.PerformanceSensitive; |
| |
| /** |
| * Mutable Message wrapper around a String message. |
| * @since 2.6 |
| */ |
| @PerformanceSensitive("allocation") |
| public class ReusableSimpleMessage implements ReusableMessage, CharSequence, ParameterVisitable, Clearable { |
| private static final long serialVersionUID = -9199974506498249809L; |
| private static final Object[] EMPTY_PARAMS = new Object[0]; |
| private CharSequence charSequence; |
| |
| public void set(final String message) { |
| this.charSequence = message; |
| } |
| |
| public void set(final CharSequence charSequence) { |
| this.charSequence = charSequence; |
| } |
| |
| @Override |
| public String getFormattedMessage() { |
| return String.valueOf(charSequence); |
| } |
| |
| @Override |
| public String getFormat() { |
| return charSequence instanceof String ? (String) charSequence : null; |
| } |
| |
| @Override |
| public Object[] getParameters() { |
| return EMPTY_PARAMS; |
| } |
| |
| @Override |
| public Throwable getThrowable() { |
| return null; |
| } |
| |
| @Override |
| public void formatTo(final StringBuilder buffer) { |
| buffer.append(charSequence); |
| } |
| |
| /** |
| * This message does not have any parameters, so this method returns the specified array. |
| * @param emptyReplacement the parameter array to return |
| * @return the specified array |
| */ |
| @Override |
| public Object[] swapParameters(final Object[] emptyReplacement) { |
| return emptyReplacement; |
| } |
| |
| /** |
| * This message does not have any parameters so this method always returns zero. |
| * @return 0 (zero) |
| */ |
| @Override |
| public short getParameterCount() { |
| return 0; |
| } |
| |
| @Override |
| public <S> void forEachParameter(ParameterConsumer<S> action, S state) { |
| } |
| |
| @Override |
| public Message memento() { |
| return new SimpleMessage(charSequence); |
| } |
| |
| // CharSequence impl |
| |
| @Override |
| public int length() { |
| return charSequence == null ? 0 : charSequence.length(); |
| } |
| |
| @Override |
| public char charAt(final int index) { |
| return charSequence.charAt(index); |
| } |
| |
| @Override |
| public CharSequence subSequence(final int start, final int end) { |
| return charSequence.subSequence(start, end); |
| } |
| |
| @Override |
| public void clear() { |
| charSequence = null; |
| } |
| } |
| |