Yuan Tian created IOTDB-210:
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Summary: One else if branch will never be reached in the method
optimize of ExpressionOptimizer
Key: IOTDB-210
URL: https://issues.apache.org/jira/browse/IOTDB-210
Project: Apache IoTDB
Issue Type: Bug
Reporter: Yuan Tian
The code has been shown in the following. As we can see, the condition in the
last else if, if 'left.getType() == ExpressionType.SERIES && right.getType() ==
ExpressionType.SERIES' is true, the condition in the previous else if which is
'left.getType() != ExpressionType.GLOBAL_TIME&& right.getType() !=
ExpressionType.GLOBAL_TIME' must be true. Thus, the last else if code block
will never be executed.
{code:java}
else if (left.getType() != ExpressionType.GLOBAL_TIME
&& right.getType() != ExpressionType.GLOBAL_TIME) {
....
} else if (left.getType() == ExpressionType.SERIES
&& right.getType() == ExpressionType.SERIES) {
...
}{code}
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