Package org.apache.sling.scripting.jsp.jasper.compiler

Class TldLocationsCache

java.lang.Object
org.apache.sling.scripting.jsp.jasper.compiler.TldLocationsCache
public abstract class TldLocationsCache extends Object
A container for all tag libraries that are defined "globally" for the web application. Tag Libraries can be defined globally in one of two ways: 1. Via elements in web.xml: the uri and location of the tag-library are specified in the element. 2. Via packaged jar files that contain .tld files within the META-INF directory, or some subdirectory of it. The taglib is 'global' if it has the element defined. A mapping between the taglib URI and its associated TaglibraryInfoImpl is maintained in this container. Actually, that's what we'd like to do. However, because of the way the classes TagLibraryInfo and TagInfo have been defined, it is not currently possible to share an instance of TagLibraryInfo across page invocations. A bug has been submitted to the spec lead. In the mean time, all we do is save the 'location' where the TLD associated with a taglib URI can be found. When a JSP page has a taglib directive, the mappings in this container are first searched (see method getLocation()). If a mapping is found, then the location of the TLD is returned. If no mapping is found, then the uri specified in the taglib directive is to be interpreted as the location for the TLD of this tag library.
Author:
Pierre Delisle, Jan Luehe

  • Field Details

  • Constructor Details

    • TldLocationsCache

      public TldLocationsCache()

  • Method Details

    • getLocation

      public abstract String[] getLocation(String uri) throws JasperException
      Throws:
      JasperException

    • getTldLocationURL

      public abstract URL getTldLocationURL(String tldLocation)

    • uriType

      public static int uriType(String uri)
      Returns the type of a URI: ABS_URI ROOT_REL_URI NOROOT_REL_URI