oracle.jbo.common
Class Diagnostic

java.lang.Object
  |
  +--oracle.jbo.common.Diagnostic

public final class Diagnostic

extends java.lang.Object

The Diagnostic class contains static tracing methods. It uses an implementation of the IDiagnostic interface to perform output. The implementation chosen can be controlled via command line parameters or properties inside the file /oracle/jbo/common/Diagnostic.properties.

See the distributed version of this file in {JDEVELOPER_HOME}/lib/jbomt.zip for detailed documentation about the available options for controlling the appearance of trace messages.

Note that all the public functions are declared as static void: this is so that versions of the code could be produced which remove these calls at compile time.

This class cannot be directly instantiated.

Since:

JDeveloper 2.0

Version:

01Dec98

See Also:

DebugDiagnostic

Method Summary

static void	ASSERT(boolean test) Conditionally raises an exception.
static void	ASSERT(boolean test, java.lang.String message) Conditionally prints a warning method and raises an exception.
static void	ASSERT(boolean test, java.lang.String msg, java.lang.Object[] param) Conditionally prints a warning method.
static void	init() initializer that looks at the values of properties in Diagnostic.properties, and sets static state flags that control the details of the trace line
static void	print(java.lang.String message) print a trace line to the diagnostic stream at the default diagnostic level.
static void	print(java.lang.String message, int level) print a trace line to the diagnostic stream, at the diagnostic level indicated.
static void	println(java.lang.String message) Prints a trace message line to the diagnostic device.
static void	println(java.lang.String message, int level) print a trace line to the diagnostic stream, at the diagnostic level indicated, and terminate it.
static void	printStackTrace() Prints a stack trace for the current environment.
static void	printStackTrace(java.lang.Throwable ex) Prints a stack trace for an exception.
static void	setQuiet(boolean b) Disables and enables the printing of diagnostic messages.
static void	setStopOnAssert(boolean b) Programmatic entrypoint to control program flow if an assertion fails.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

init

public static void init()

initializer that looks at the values of properties in Diagnostic.properties, and sets static state flags that control the details of the trace line

print

public static void print(java.lang.String message,
                         int level)

print a trace line to the diagnostic stream, at the diagnostic level indicated.

Parameters:

message - the text of the message

level - the trace level to be associated with this message

print

public static void print(java.lang.String message)

print a trace line to the diagnostic stream at the default diagnostic level.

Parameters:

message - the message to print

See Also:

print

println

public static void println(java.lang.String message,
                           int level)

print a trace line to the diagnostic stream, at the diagnostic level indicated, and terminate it.

Parameters:

message - the text of the message

level - the trace level to be associated with this message

println

public static void println(java.lang.String message)

Prints a trace message line to the diagnostic device.

Parameters:

message - the text to be printed.

ASSERT

public static void ASSERT(boolean test,
                          java.lang.String msg,
                          java.lang.Object[] param)

Conditionally prints a warning method.

The message is constructed from a format string and an array of parameters. An exception is raised if enabled by setStopOnAssert().

Parameters:

test - the result of the test being asserted.

message - the message's format string.

param - the array of message parameters.

Throws:

JboAssert - if test is true.

ASSERT

public static void ASSERT(boolean test,
                          java.lang.String message)

Conditionally prints a warning method and raises an exception.

An exception is raised if enabled by setStopOnAssert().

Parameters:

test - the result of the test being asserted.

message - the message.

Throws:

JboAssert - if test is true.

ASSERT

public static void ASSERT(boolean test)

Conditionally raises an exception.

An exception is raised if enabled by setStopOnAssert().

Parameters:

test - the result of the test being asserted.

Throws:

JboAssert - if test is true.

setQuiet

public static void setQuiet(boolean b)

Disables and enables the printing of diagnostic messages.

Parameters:

b - if false (the default) diagnostic messages are printed, if true, diagnostic messages are suppressed.

setStopOnAssert

public static void setStopOnAssert(boolean b)

Programmatic entrypoint to control program flow if an assertion fails. If it is set to true, then BC4J clients will receive an exception if an ASSERT() fails, otherwise a trace message is printed.

Parameters:

b - exception throw mode true or false

See Also:

ASSERT

printStackTrace

public static void printStackTrace()

Prints a stack trace for the current environment.

printStackTrace

public static void printStackTrace(java.lang.Throwable ex)

Prints a stack trace for an exception.

Parameters:

ex - the exception to be traced.