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@startuml

ProfilerCollector o-- ProfilerData
ProfilerData o-- MethodInfo
ProfilerData *-- CallTreeElement
CallTreeElement *- MethodInfo

CallTreeElement o-- CallTreeElement

class ProfilerCollector {
    Map data
---
    collect()
    collect(Thread)
    collect(object, StackTrace[])
}
note left of ProfilerCollector
    The profiler collection represents a collection
    of profiledata collected from stacktraces and
    grouped according to the application needs.
end note


class ProfilerData {
    CallTree root
    Set methodInfo
---
    collect(StackTrace[])
}

note right of ProfilerData
    Profile data comes from stacktraces.

    This is the __most important class__.
    It can be used alone without the ProfilerCollector.

    The stacktraces can come from any thread
    and can have their elements edited before collection.
    For instance to remove irrelevant information.
end note


class CallTreeElement {
    MethodInfo elementInfo
    Map[MethodInfo, CallTreeElement] children
    long count
}

note left of CallTreeElement
    It's a node in a call tree.

    The call tree is built as
    the stack traces are collected.

    A neat trick is to cut and
    reverse the stacktraces to find
    what calls a certain method
end note


class MethodInfo {
    String declaringClass
    String methodName
    String fileName
    long count
}

note right of MethodInfo
    Describes a method.

    Contains the number of times that
    method appeared (uniquely) in the collected stacktraces.

    (if the method appears twice in the
    same collection it is counted only once)
end note


class ProfilerDump {
    static textDump()
    static textDumpCallTree()
}

note left of ProfilerDump
    Utility class for dumping
    profiler the data as text
end note


@enduml