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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--de.qfs.lib.util.MessageCollector
Very simple mechanism for collecting warning and error messages.
This class is intended for use in a parser or similar application where
many warnings and errors may arise during one run. Each message passed to
the MessageCollector is assigned a level of severity, WARNING
for warnings, ERROR
for errors and FATAL_ERROR
for fatal errors. After processing is finished,
the number of warnings, errors and fatal errors can be queried and the
collected messages are available via getMessages
.
Things get even more interesting when nested calls need to be handled,
e.g. when a parser needs to include files. To that end an instance
mechanism is implemented that associates a MessageCollector with
the current thread. For JDK 1.2 and above, ThreadLocal
is used for this, but for JDK 1.1 be sure to release
MessageCollector instances before a thread terminates, or they
will become uncollectable garbage.
Field Summary | |
static int |
ERROR
Level for errors. |
static int |
FATAL_ERROR
Level for fatal errors. |
static int |
NO_ERROR
Level for neither warnings nor errors. |
static int |
WARNING
Level for warnings. |
Constructor Summary | |
MessageCollector()
Create a new MessageCollector. |
Method Summary | |
void |
addMessage(int level,
java.lang.String message)
Add a message to the MessageCollector. |
int |
getErrorCount()
Get the number of errors that occured. |
int |
getFatalErrorCount()
Get the number of fatal errors that occured. |
java.lang.String[] |
getMessages()
Get the collected messages. |
int |
getWarningCount()
Get the number of warnings that occured. |
int |
getWorstCase()
Get the highest level of the collected messages. |
static MessageCollector |
instance()
Get the MessageCollector for the current thread, creating a new one if necessary. |
static void |
release()
Destroy the MessageCollector for the current thread. |
void |
reset()
Reset the MessageCollector by clearing the collected messages and resetting the counts. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final int NO_ERROR
public static final int WARNING
public static final int ERROR
public static final int FATAL_ERROR
Constructor Detail |
public MessageCollector()
Method Detail |
public static MessageCollector instance()
public static void release()
public void addMessage(int level, java.lang.String message)
level
- The level of the message.message
- The message.public java.lang.String[] getMessages()
public int getWarningCount()
public int getErrorCount()
public int getFatalErrorCount()
public int getWorstCase()
public void reset()
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