Umple E065 No Substates History State
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E065 No Substates History State
Umple semantic error reported when a history state is declared at a state with no substates
A transition to a history state can only be declared on a state with substates, as a state with no substates
has no history to be managed.
Example
//The error is generated because
//s2 does not contain a substate
//and therefore no history to
//be managed
class A {
sm {
s1 {
e -> s2.H;
}
s2 {
}
}
}
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Solution to The Above So the Message No Longer Appears
//The following does not generate
//the error as s2 contains substates
//and can keep the last substate in
//memory
class A {
sm {
s1 {
e -> s2.H;
}
s2 {
s2a {
}
s2b {
}
/* ... more substates */
}
}
}
Load the above code into UmpleOnline