logref.java

OSGI这是一个中间件,与UPNP齐名,是用于移植到嵌入式平台之上

     */
    public boolean doInfo() {
        return getLogLevel() >= LOG_INFO;
    }

    /**
     * * Returns true if messages with severity error or higher * are saved by
     * the log. *
     * 
     * @return <code>true</code> if messages with severity LOG_ERROR * or
     *         higher are included in the log, otherwise <code>false</code>.
     */
    public boolean doError() {
        return getLogLevel() >= LOG_ERROR;
    }

    /**
     * * Log a debug level message * *
     * 
     * @param msg
     *            Log message.
     */
    public void debug(String msg) {
        doLog(msg, LOG_DEBUG, (ServiceReference) null, (Throwable) null);
    }

    /**
     * * Log a debug level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with.
     */
    public void debug(String msg, ServiceReference sr) {
        doLog(msg, LOG_DEBUG, sr, (Throwable) null);
    }

    /**
     * * Log a debug level message. * *
     * 
     * @param msg
     *            Log message *
     * @param e
     *            The exception that reflects the condition.
     */
    public void debug(String msg, Throwable e) {
        doLog(msg, LOG_DEBUG, (ServiceReference) null, e);
    }

    /**
     * * Log a debug level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with. *
     * @param e
     *            The exception that reflects the condition.
     */
    public void debug(String msg, ServiceReference sr, Throwable e) {
        doLog(msg, LOG_DEBUG, sr, e);
    }

    /**
     * * Log an info level message. * *
     * 
     * @param msg
     *            Log message
     */
    public void info(String msg) {
        doLog(msg, LOG_INFO, (ServiceReference) null, (Throwable) null);
    }

    /**
     * * Log an info level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with.
     */
    public void info(String msg, ServiceReference sr) {
        doLog(msg, LOG_INFO, sr, (Throwable) null);
    }

    /**
     * * Log an info level message. * *
     * 
     * @param msg
     *            Log message *
     * @param e
     *            The exception that reflects the condition.
     */
    public void info(String msg, Throwable e) {
        doLog(msg, LOG_INFO, (ServiceReference) null, e);
    }

    /**
     * * Log an info level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with. *
     * @param e
     *            The exception that reflects the condition.
     */
    public void info(String msg, ServiceReference sr, Throwable e) {
        doLog(msg, LOG_INFO, sr, e);
    }

    /**
     * * Log a warning level message. * *
     * 
     * @param msg
     *            Log message
     */
    public void warn(String msg) {
        doLog(msg, LOG_WARNING, (ServiceReference) null, (Throwable) null);
    }

    /**
     * * Log a warning level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with.
     */
    public void warn(String msg, ServiceReference sr) {
        doLog(msg, LOG_WARNING, sr, (Throwable) null);
    }

    /**
     * * Log a warning level message. * *
     * 
     * @param msg
     *            Log message *
     * @param e
     *            The exception that reflects the condition.
     */
    public void warn(String msg, Throwable e) {
        doLog(msg, LOG_WARNING, (ServiceReference) null, e);
    }

    /**
     * * Log a warning level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with. *
     * @param e
     *            The exception that reflects the condition.
     */
    public void warn(String msg, ServiceReference sr, Throwable e) {
        doLog(msg, LOG_WARNING, sr, e);
    }

    /**
     * * Log an error level message. * *
     * 
     * @param msg
     *            Log message
     */
    public void error(String msg) {
        doLog(msg, LOG_ERROR, (ServiceReference) null, (Throwable) null);
    }

    /**
     * * Log an error level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with.
     */
    public void error(String msg, ServiceReference sr) {
        doLog(msg, LOG_ERROR, sr, (Throwable) null);
    }

    /**
     * * Log an error level message. * *
     * 
     * @param msg
     *            Log message *
     * @param e
     *            The exception that reflects the condition.
     */
    public void error(String msg, Throwable e) {
        doLog(msg, LOG_ERROR, (ServiceReference) null, e);
    }

    /**
     * * Log an error level message. * *
     * 
     * @param msg
     *            Log message *
     * @param sr
     *            The <code>ServiceReference</code> of the service * that this
     *            message is associated with. *
     * @param e
     *            The exception that reflects the condition.
     */
    public void error(String msg, ServiceReference sr, Throwable e) {
        doLog(msg, LOG_ERROR, sr, e);
    }

    /**
     * * Log a message. * The ServiceDescription field and the Throwable * field
     * of the LogEntry will be set to null. *
     * 
     * @param level
     *            The severity of the message. (Should be one of the * four
     *            predefined severities.) *
     * @param message
     *            Human readable string describing the condition.
     */
    public void log(int level, String message) {
        doLog(message, level, (ServiceReference) null, (Throwable) null);
    }

    /**
     * * Log a message with an exception. * The ServiceDescription field of the
     * LogEntry will be set to null. *
     * 
     * @param level
     *            The severity of the message. (Should be one of the * four
     *            predefined severities.) *
     * @param message
     *            Human readable string describing the condition. *
     * @param exception
     *            The exception that reflects the condition.
     */
    public void log(int level, String message, Throwable exception) {
        doLog(message, level, (ServiceReference) null, exception);
    }

    /**
     * * Log a message associated with a specific Service. * The Throwable field
     * of the LogEntry will be set to null. *
     * 
     * @param sr
     *            The <code>ServiceReference</code> of the service that * this
     *            message is associated with. *
     * @param level
     *            The severity of the message. (Should be one of the * four
     *            predefined severities.) *
     * @param message
     *            Human readable string describing the condition.
     */
    public void log(ServiceReference sr, int level, String message) {
        doLog(message, level, sr, (Throwable) null);
    }

    /**
     * * Log a message with an exception associated with a specific Service. *
     * 
     * @param sr
     *            The <code>ServiceReference</code> of the service that * this
     *            message is associated with. *
     * @param level
     *            The severity of the message. (Should be one of the * four
     *            predefined severities.) *
     * @param message
     *            Human readable string describing the condition. *
     * @param exception
     *            The exception that reflects the condition.
     */
    public void log(ServiceReference sr, int level, String message,
            Throwable exception) {
        doLog(message, level, sr, exception);
    }

    /**
     * * Returns a human readable name for the bundle that * <code>bc</code>
     * represents. *
     * 
     * @return Name of the bundle that uses this wrapper * (at least 12
     *         characters).
     */
    private String getBundleName() {
        StringBuffer bundleName = new StringBuffer(24);
        // We can't get bundle-name since it requires AdminPermission.
        // bundleName.append((String)bc.getBundle().getHeaders().get("Bundle-Name"));
        // If name was not found use the Bid as name.
        if (bundleName.length() <= 0) {
            bundleName.append("bid#");
            bundleName.append(String.valueOf(bundleId));
        }
        if (bundleName.length() < 12) {
            bundleName.append("            ");
            bundleName.setLength(12);
        }
        return bundleName.toString();
    }

}