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annotate src/org/eclipse/jetty/util/log/AbstractLogger.java @ 802:3428c60d7cfc

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replace jetty jars with source
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Sep 2016 21:15:48 -0600
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.util.log;
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20
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21
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22 /* ------------------------------------------------------------ */
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23 /** Abstract Logger.
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24 * Manages the atomic registration of the logger by name.
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25 */
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26 public abstract class AbstractLogger implements Logger
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27 {
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28 public final Logger getLogger(String name)
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29 {
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30 if (isBlank(name))
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31 return this;
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32
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33 final String basename = getName();
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34 final String fullname = (isBlank(basename) || Log.getRootLogger()==this)?name:(basename + "." + name);
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35
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36 Logger logger = Log.getLoggers().get(fullname);
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37 if (logger == null)
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38 {
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39 Logger newlog = newLogger(fullname);
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40
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41 logger = Log.getMutableLoggers().putIfAbsent(fullname,newlog);
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42 if (logger == null)
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43 logger=newlog;
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44 }
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45
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46 return logger;
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47 }
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48
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49
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50 protected abstract Logger newLogger(String fullname);
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51
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52 /**
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53 * A more robust form of name blank test. Will return true for null names, and names that have only whitespace
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54 *
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55 * @param name
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56 * the name to test
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57 * @return true for null or blank name, false if any non-whitespace character is found.
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58 */
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59 private static boolean isBlank(String name)
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60 {
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61 if (name == null)
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62 {
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63 return true;
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64 }
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65 int size = name.length();
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66 char c;
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67 for (int i = 0; i < size; i++)
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68 {
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69 c = name.charAt(i);
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70 if (!Character.isWhitespace(c))
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71 {
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72 return false;
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73 }
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74 }
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75 return true;
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76 }
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77 }