Examples of org.apache.commons.logging.Log.warn()

org.apache.commons.logging.Log.warn()

Log a message with warn log level.
@param message log this message

            Class[] paramsClasses = new Class[] { Throwable.class };
            return Throwable.class.getMethod("initCause", paramsClasses);
        } catch (NoSuchMethodException e) {
            Log log = LogFactory.getLog(BeanUtils.class);
            if (log.isWarnEnabled()) {
                log.warn("Throwable does not have initCause() method in JDK 1.3");
            }
            return null;
        } catch (Throwable e) {
            Log log = LogFactory.getLog(BeanUtils.class);
            if (log.isWarnEnabled()) {

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            }
            return null;
        } catch (Throwable e) {
            Log log = LogFactory.getLog(BeanUtils.class);
            if (log.isWarnEnabled()) {
                log.warn("Error getting the Throwable initCause() method", e);
            }
            return null;
        }
    }
}

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                } catch (SecurityException e) {
                    // don't know - so display warning
                    vulnerableJVM = true;
                }
                if (vulnerableJVM) {
                    log.warn(
                        "Current Security Manager restricts use of workarounds for reflection bugs "
                        + " in pre-1.4 JVMs.");
                }
                loggedAccessibleWarning = true;
            }

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      } catch (IOException ie) {
        Log log = (Log) context.getAttribute("log");
        String errorMsg = ("getMapOutput(" + mapId + "," + reduceId + 
                           ") failed :\n"+
                           StringUtils.stringifyException(ie));
        log.warn(errorMsg);
        if (isInputException) {
          tracker.mapOutputLost(TaskAttemptID.forName(mapId), errorMsg);
        }
        response.sendError(HttpServletResponse.SC_GONE, errorMsg);
        shuffleMetrics.failedOutput();

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            return null;
        }
        int length = result.getLength();
        if (length == 0) {
            Log log = LogFactory.getLog(Builtin.class);
            log.warn("Data(): No nodes matching the XPath expression \""
                + path + "\", returning null");
            return null;
        } else {
            if (length > 1) {
                Log log = LogFactory.getLog(Builtin.class);

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                + path + "\", returning null");
            return null;
        } else {
            if (length > 1) {
                Log log = LogFactory.getLog(Builtin.class);
                log.warn("Data(): Multiple nodes matching XPath expression \""
                    + path + "\", returning first");
            }
            return result.item(0);
        }
    }

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            return null;
        }
        int length = result.getLength();
        if (length == 0) {
            Log log = LogFactory.getLog(Builtin.class);
            log.warn("Data(): No nodes matching the XPath expression \""
                + path + "\", returning null");
            return null;
        } else {
            if (length > 1) {
                Log log = LogFactory.getLog(Builtin.class);

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                + path + "\", returning null");
            return null;
        } else {
            if (length > 1) {
                Log log = LogFactory.getLog(Builtin.class);
                log.warn("Data(): Multiple nodes matching XPath expression \""
                    + path + "\", returning first");
            }
            return result.item(0);
        }
    }

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      } catch (IOException ie) {
        Log log = (Log) context.getAttribute("log");
        String errorMsg = ("getMapOutput(" + mapId + "," + reduceId + 
                           ") failed :\n"+
                           StringUtils.stringifyException(ie));
        log.warn(errorMsg);
        checkException(ie, exceptionMsgRegex, exceptionStackRegex, shuffleMetrics);
        if (isInputException) {
          tracker.mapOutputLost(TaskAttemptID.forName(mapId), errorMsg);
        }
        response.sendError(HttpServletResponse.SC_GONE, errorMsg);

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    final String legacyDefaultNamespace = knownNamespaces.get(conf.getConfigProperty(prefix + "namespace"));
    if (legacyDefaultNamespace != null)
    {
      if (warnedLegacyConfig == false)
      {
        legacyWarningLog.warn("Configured configuration-properties based override for global read-hander. " +
                "Change your code to use proper module-initializers instead. " +
                "This method of configuring the parser will go away in the next major version.");
        warnedLegacyConfig = true;
      }
      setDefaultNamespace(legacyDefaultNamespace);

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