Package org.apache.catalina.webresources

Class JarContents

  • public final class JarContents
extends java.lang.Object
    This class represents the contents of a jar by determining whether a given resource might be in the cache, based on a bloom filter. This is not a general-purpose bloom filter because it contains logic to strip out characters from the beginning of the key. The hash methods are simple but good enough for this purpose.

    • Constructor Summary

      Constructors 
      Constructor Description
      JarContents​(java.util.jar.JarFile jar)
      Parses the passed-in jar and populates the bit array.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean mightContainResource​(java.lang.String path, java.lang.String webappRoot)
      Method that identifies whether a given path MIGHT be in this jar.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • JarContents

        public JarContents​(java.util.jar.JarFile jar)
        Parses the passed-in jar and populates the bit array.
        Parameters:
        jar - the JAR file

    • Method Detail

      • mightContainResource

        public final boolean mightContainResource​(java.lang.String path,
                                          java.lang.String webappRoot)
        Method that identifies whether a given path MIGHT be in this jar. Uses the Bloom filter mechanism.
        Parameters:
        path - Requested path. Sometimes starts with "/WEB-INF/classes".
        webappRoot - The value of the webapp location, which can be stripped from the path. Typically is "/WEB-INF/classes".
        Returns:
        Whether the prefix of the path is known to be in this jar.