| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| StringBufferLoggerImpl |
|
| 3.25;3.25 |
| 1 | package org.apache.ojb.broker.util.logging; | |
| 2 | ||
| 3 | /* Copyright 2002-2005 The Apache Software Foundation | |
| 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 | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 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. | |
| 16 | */ | |
| 17 | ||
| 18 | import org.apache.commons.lang.SystemUtils; | |
| 19 | import org.apache.commons.lang.exception.ExceptionUtils; | |
| 20 | ||
| 21 | /** | |
| 22 | * This class is a {@link Logger} implementation based on a {@link StringBuffer}. All | |
| 23 | * logging method calls are written in the buffer. With method {@link #flushLogBuffer()} | |
| 24 | * the buffer will be cleared and the buffered log statements returned as string. | |
| 25 | * | |
| 26 | * @version $Id: StringBufferLoggerImpl.java,v 1.1 2007-08-24 22:17:32 ewestfal Exp $ | |
| 27 | */ | |
| 28 | public class StringBufferLoggerImpl extends PoorMansLoggerImpl | |
| 29 | { | |
| 30 | protected String EOL = SystemUtils.LINE_SEPARATOR; | |
| 31 | private StringBuffer buffer; | |
| 32 | private boolean errorLog; | |
| 33 | ||
| 34 | public StringBufferLoggerImpl(String name) | |
| 35 | { | |
| 36 | super(name); | |
| 37 | buffer = new StringBuffer(1000); | |
| 38 | } | |
| 39 | ||
| 40 | /** | |
| 41 | * Log all statements in a {@link StringBuffer}. | |
| 42 | */ | |
| 43 | protected void log(String aLevel, Object obj, Throwable t) | |
| 44 | { | |
| 45 | buffer.append(BRAKE_OPEN).append(getName()).append(BRAKE_CLOSE).append(aLevel); | |
| 46 | if (obj != null && obj instanceof Throwable) | |
| 47 | { | |
| 48 | try | |
| 49 | { | |
| 50 | buffer.append(((Throwable) obj).getMessage()).append(EOL); | |
| 51 | ((Throwable) obj).printStackTrace(); | |
| 52 | } | |
| 53 | catch (Throwable ignored) | |
| 54 | { | |
| 55 | /*logging should be failsafe*/ | |
| 56 | } | |
| 57 | } | |
| 58 | else | |
| 59 | { | |
| 60 | try | |
| 61 | { | |
| 62 | buffer.append(obj).append(EOL); | |
| 63 | } | |
| 64 | catch(Exception e) | |
| 65 | { | |
| 66 | // ignore | |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 70 | if (t != null) | |
| 71 | { | |
| 72 | try | |
| 73 | { | |
| 74 | buffer.append(t.getMessage()).append(EOL); | |
| 75 | buffer.append(ExceptionUtils.getFullStackTrace(t)).append(EOL); | |
| 76 | } | |
| 77 | catch (Throwable ignored) | |
| 78 | { | |
| 79 | /*logging should be failsafe*/ | |
| 80 | } | |
| 81 | } | |
| 82 | if(!errorLog && (aLevel.equals(STR_ERROR) || aLevel.equals(STR_FATAL))) | |
| 83 | { | |
| 84 | errorLog = true; | |
| 85 | } | |
| 86 | } | |
| 87 | ||
| 88 | /** | |
| 89 | * Returns <em>true</em> if one or more error/fatal log method calls | |
| 90 | * have been logged in the buffer. | |
| 91 | */ | |
| 92 | public boolean isErrorLog() | |
| 93 | { | |
| 94 | return errorLog; | |
| 95 | } | |
| 96 | ||
| 97 | /** | |
| 98 | * Returns all buffered log statements as string and clear the buffer. | |
| 99 | */ | |
| 100 | public String flushLogBuffer() | |
| 101 | { | |
| 102 | String result = buffer.toString(); | |
| 103 | buffer = new StringBuffer(1000); | |
| 104 | return result; | |
| 105 | } | |
| 106 | } |