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package oracle.toplink.essentials.logging;
/** Java class "JavaLog.java" generated from Poseidon for UML.
* Poseidon for UML is developed by <A HREF="http://www.gentleware.com">Gentleware</A>.
* Generated with <A HREF="http://jakarta.apache.org/velocity/">velocity</A> template engine.
*/
import java.util.*;
import java.util.logging.*;
import java.security.AccessController;
import java.security.PrivilegedAction;
import oracle.toplink.essentials.sessions.Session;
import oracle.toplink.essentials.internal.localization.i18n.*;
/**
* PUBLIC:
* <p>
* This is a wrapper class for java.util.logging. It is used when messages need to
* be logged through java.util.logging.
* </p>
* @see SessionLog
* @see AbstractSessionLog
* @see SessionLogEntry
* @see Session
*/
public class JavaLog extends AbstractSessionLog {
/**
* Stores the default session name in case there is the session name is missing.
*/
public static final String TOPLINK_NAMESPACE = "oracle.toplink.essentials";
public static final String DEFAULT_TOPLINK_NAMESPACE = TOPLINK_NAMESPACE + ".default";
public static final String SESSION_TOPLINK_NAMESPACE = TOPLINK_NAMESPACE + ".session";
/**
* Stores all the java.util.logging.Levels. The indexes are TopLink logging levels.
*/
private static final Level[] levels = new Level[] { Level.ALL, Level.FINEST, Level.FINER, Level.FINE, Level.CONFIG, Level.INFO, Level.WARNING, Level.SEVERE, Level.OFF };
/**
* Stores the Logger for default TopLink namespace, i.e. "oracle.toplink.essentials".
* This namespace should be a child of the TopLink namespace, e.g.
* "oracle.toplink.essentials.default", otherwise AbstractSessionLog will set the explicit
* level for all TopLink loggers (overriding the container settings) in the VM on
* the first PU with the specified log level.
*/
private static Logger defaultTopLinkLogger = Logger.getLogger(DEFAULT_TOPLINK_NAMESPACE);
/**
* Represents the HashMap that stores all the name space strings.
* The keys are category names. The values are namespace strings.
*/
private Map nameSpaceMap = new HashMap();
/**
* Stores the namespace for session, i.e."oracle.toplink.essentials.session.<sessionname>".
*/
private String sessionNameSpace;
/**
* Stores the Logger for session namespace, i.e. "oracle.toplink.essentials.session.<sessionname>".
*/
private Logger sessionLogger;
private Map categoryloggers = new HashMap<String, Logger>();
/**
* PUBLIC:
* <p>
* Return the effective log level for the name space extracted from session and category.
* If a Logger's level is set to be null then the Logger will use an effective Level that will
* be obtained by walking up the parent tree and using the first non-null Level.
* </p><p>
*
* @return the effective log level.
* </p>
*/
public int getLevel(String category) {
Logger logger = getLogger(category);
while ((logger != null) && (logger.getLevel() == null)) {
logger = logger.getParent();
}
if (logger == null) {
return OFF;
}
//For a given java.util.logging.Level, return the index (ie, TopLink logging level)
int logLevel = logger.getLevel().intValue();
for (int i = 0; i < levels.length ; i++) {
if (logLevel == levels[i].intValue()) {
return i;
}
}
return OFF;
}
/**
* PUBLIC:
* <p>
* Set the log level to a logger with name space extracted from the given category.
* </p>
*/
public void setLevel(final int level, String category) {
final Logger logger = getLogger(category);
if (logger == null) {
return;
}
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
logger.setLevel(getJavaLevel(level));
return null; // nothing to return
}
});
}
/**
* INTERNAL:
* Return the name space for the given category from the map.
*/
protected String getNameSpaceString(String category) {
if (session == null) {
return DEFAULT_TOPLINK_NAMESPACE;
} else if ((category == null) || (category.length() == 0)) {
return sessionNameSpace;
} else {
return (String)nameSpaceMap.get(category);
}
}
/**
* INTERNAL:
* Return the Logger for the given category
*/
protected Logger getLogger(String category) {
if (session == null) {
return defaultTopLinkLogger;
} else if ((category == null) || (category.length() == 0)) {
return sessionLogger;
} else {
Logger logger = (Logger) categoryloggers.get(category);
// If session != null, categoryloggers should have an entry for this category
assert logger != null;
return logger;
}
}
/**
* PUBLIC:
* <p>
* Set the session and session namespace.
* </p>
*
* @param session a Session
* </p>
*/
public void setSession(Session session) {
super.setSession(session);
if (session != null) {
String sessionName = session.getName();
if ((sessionName != null) && (sessionName.length() != 0)) {
sessionNameSpace = SESSION_TOPLINK_NAMESPACE + "." + sessionName;
} else {
sessionNameSpace = DEFAULT_TOPLINK_NAMESPACE;
}
//Initialize loggers eagerly
sessionLogger = Logger.getLogger(sessionNameSpace);
for (int i = 0; i < loggerCategories.length; i++) {
String loggerCategory = loggerCategories[i];
String loggerNameSpace = sessionNameSpace + "." + loggerCategory;
nameSpaceMap.put(loggerCategory, loggerNameSpace);
categoryloggers.put(loggerCategory, Logger.getLogger(loggerNameSpace));
}
}
}
/**
* INTERNAL:
* Return the corresponding java.util.logging.Level for a given TopLink level.
*/
private Level getJavaLevel(int level) {
return levels[level];
}
/**
* PUBLIC:
* <p>
* Check if a message of the given level would actually be logged by the logger
* with name space built from the given session and category.
* Return the shouldLog for the given category from
* </p><p>
* @return true if the given message level will be logged
* </p>
*/
public boolean shouldLog(int level, String category) {
Logger logger = getLogger(category);
return logger.isLoggable(getJavaLevel(level));
}
/**
* PUBLIC:
* <p>
* Log a SessionLogEntry
* </p><p>
* @param entry SessionLogEntry that holds all the information for a TopLink logging event
* </p>
*/
public void log(SessionLogEntry entry) {
if (!shouldLog(entry.getLevel(), entry.getNameSpace())) {
return;
}
Logger logger = getLogger(entry.getNameSpace());
Level javaLevel = getJavaLevel(entry.getLevel());
internalLog(entry, javaLevel, logger);
}
/**
* INTERNAL:
* <p>
* Build a LogRecord
* </p><p>
* @param entry SessionLogEntry that holds all the information for a TopLink logging event
* @param javaLevel the message level
* </p>
*/
protected void internalLog(SessionLogEntry entry, Level javaLevel, Logger logger) {
// Format message so that we do not depend on the bundle
TopLinkLogRecord lr = new TopLinkLogRecord(javaLevel, formatMessage(entry));
lr.setSourceClassName(null);
lr.setSourceMethodName(null);
lr.setLoggerName(getNameSpaceString(entry.getNameSpace()));
if (shouldPrintSession()) {
lr.setSessionString(getSessionString(entry.getSession()));
}
if (shouldPrintConnection()) {
lr.setConnection(entry.getConnection());
}
lr.setThrown(entry.getException());
lr.setShouldLogExceptionStackTrace(shouldLogExceptionStackTrace());
lr.setShouldPrintDate(shouldPrintDate());
lr.setShouldPrintThread(shouldPrintThread());
logger.log(lr);
}
/**
* PUBLIC:
* <p>
* Log a throwable.
* </p><p>
* @param throwable a throwable
* </p>
*/
public void throwing(Throwable throwable) {
getLogger(null).throwing(null, null, throwable);
}
/**
* INTERNAL:
* Each session owns its own session log because session is stored in the session log
*/
public Object clone() {
// There is no special treatment required for cloning here
// The state of this object is described by member variables sessionLogger and categoryLoggers.
// This state depends on session.
// If session for the clone is going to be the same as session for this there is no
// need to do "deep" cloning.
// If not, the session being cloned should call setSession() on its JavaLog object to initialize it correctly.
JavaLog cloneLog = (JavaLog)super.clone();
return cloneLog;
}
}
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