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chore: better exception when list variable is null #140

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merged 2 commits into from
Jun 28, 2023
Merged

chore: better exception when list variable is null #140

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chore: better exception when list variable is null
triceo Jun 28, 2023
17cb252
Merge branch 'main' into messages
triceo Jun 28, 2023
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6 changes: 5 additions & 1 deletion .../java/ai/timefold/solver/core/impl/domain/variable/descriptor/ListVariableDescriptor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,11 @@ public boolean isInitialized(Object entity) {
}

public List<Object> getListVariable(Object entity) {
return (List<Object>) getValue(entity);
Object value = getValue(entity);
if (value == null) {
throw new IllegalStateException("The planning list variable (" + this + ") of entity (" + entity + ") is null.");
}
return (List<Object>) value;
}

public Object removeElement(Object entity, int index) {
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