.. _-mapUnmatchedPath-java-:
mapUnmatchedPath
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Description
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Transforms the unmatchedPath field of the request context for inner routes.
The ``mapUnmatchedPath`` directive is used as a building block for writing :ref:`Custom Directives-java`. You can use it
for implementing custom path matching directives.
Use ``extractUnmatchedPath`` for extracting the current value of the unmatched path.
Example
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.. includecode:: ../../../../code/docs/http/javadsl/server/directives/BasicDirectivesExamplesTest.java#mapUnmatchedPath