Cpaulyz opened a new pull request, #10874:
URL: https://github.com/apache/iotdb/pull/10874
## Description
To support authorization, this PR implements two algorithms about
intersection.
* PartialPath
```java
/**
* Generate a list of partial paths which are the intersection of this
path pattern and input
* prefix pattern.
*
* @param prefixPattern must be a prefix full path ending with one "**",
like "root.sg.**"
* @return a list of partial paths which are the intersection of this path
pattern and input
* prefix pattern.
*/
public List<PartialPath> intersectWithPrefixPattern(PartialPath
prefixPattern);
```
* PathPatternTree
```java
/**
* Intersect the pattern tree with the full path prefix tree, and return
the intersected pattern
* tree.
*
* @param patternTree any pattern tree
* @param fullPathPrefixTree the included pattern must be fullPath or
prefix pattern(e.g.
* root.sg.**)
* @return the intersected pattern tree
*/
public static PathPatternTree
intersectWithFullPathPrefixTree(PathPatternTree patternTree, PathPatternTree
fullPathPrefixTree);
```
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