Package org.eclipse.steady.java.monitor.trace

Class StackTraceUtil

java.lang.Object

org.eclipse.steady.java.monitor.trace.StackTraceUtil

public class StackTraceUtil
extends Object

Transforms a stacktrace, obtained from Throwable as an array of StackTraceElement, into a linked list of corresponding construct identifiers.

Analyzes the bytecode in order to find methods in case of method overloading (thereby using the line numbers provided in the stack trace).

More information can be found here: http://stackoverflow.com/questions/421280/how-do-i-find-the-caller-of-a-method-using-stacktrace-or-reflection http://stackoverflow.com/questions/15899518/modifying-line-numbers-in-javassist http://stackoverflow.com/questions/1069066/get-current-stack-trace-in-java

Constructor Summary

Constructors

Constructor	Description
StackTraceUtil()	Constructor for StackTraceUtil.
StackTraceUtil(LoaderHierarchy _hier, Loader _loader)	Constructor for StackTraceUtil.

Method Summary

Modifier and Type	Method	Description
ConstructId	getJUnitContext(List<PathNode> _path)	Returns the JUnit test case representing the starting point of a previously computed path.
ConstructId	getPredecessorConstruct(StackTraceElement[] _st)	Given a stacktrace object return the predecessor of the element that called this stacktrace.
void	setStopAtJUnit(boolean _b)	Setter for the field stopAtJUnit.
List<PathNode>	transformStackTrace(StackTraceElement[] _st, PathNode _change_list_element)	Transforms the stacktrace (obtained by, for instance, new Throwable().getStackTrace()) into a linked list of construct identifiers.

Methods inherited from class java.lang.Object

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

Constructor Detail

StackTraceUtil

public StackTraceUtil()

Constructor for StackTraceUtil.

StackTraceUtil

public StackTraceUtil(LoaderHierarchy _hier,
                      Loader _loader)

Constructor for StackTraceUtil.

Parameters:

_hier - a LoaderHierarchy object.

_loader - a Loader object.

Method Detail

setStopAtJUnit

public void setStopAtJUnit(boolean _b)

Setter for the field stopAtJUnit.

Parameters:

_b - a boolean.

getJUnitContext

public ConstructId getJUnitContext(List<PathNode> _path)

Returns the JUnit test case representing the starting point of a previously computed path. If no JUnit test case is present, the method returns null.

Parameters:

_path - a List object.

Returns:

a ConstructId object.

transformStackTrace

public List<PathNode> transformStackTrace(StackTraceElement[] _st,
                                          PathNode _change_list_element)

Transforms the stacktrace (obtained by, for instance, new Throwable().getStackTrace()) into a linked list of construct identifiers.

Parameters:

_st - an array of StackTraceElement objects.

_change_list_element - the construct ID for which the stack trace was collected (if known by caller, can be null)

Returns:

a List object.

getPredecessorConstruct

public ConstructId getPredecessorConstruct(StackTraceElement[] _st)

Given a stacktrace object return the predecessor of the element that called this stacktrace.

Parameters:

_st - an array of StackTraceElement objects.

Returns:

a ConstructId object.