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package org.glassfish.jersey.uri;

import java.util.List;
import java.util.regex.MatchResult;

import javax.ws.rs.core.PathSegment;
import javax.ws.rs.core.UriInfo;

/**
 * Extensions to {@link UriInfo}.
 *
 * @author Paul Sandoz
 */
public interface ExtendedUriInfo extends UriInfo {

    /**
     * Get get matched resource method that was invoked.
     *
     * @return the matched resource method, otherwise null if no resource
     *         method was invoked.
     */
    // todo: add support
    // ResourceMethod getMatchedMethod();

    /**
     * Get the throwable that was mapped to a response.
     * 
     * A response filter or a message body writer may utilize this method to
     * determine if a resource method was invoked but did not return a
     * response because an exception was thrown from the resource method, or
     * the resource method returned but a response filter threw an exception.
     *
     * @return the throwable that was mapped to a response, otherwise null
     *         if no throwable was mapped to a response.
     */
    Throwable getMappedThrowable();

    /**
     * Get a read-only list of {@link MatchResult} for matched resources.
     * Entries are ordered in reverse request URI matching order, with the
     * root resource match result last.
     *
     * @return a read-only list of match results for matched resources.
     */
    List getMatchedResults();

    /**
     * Get a read-only list of {@link UriTemplate} for matched resources.
     * Each entry is a URI template that is the value of the
     * {@link javax.ws.rs.Path} that is a partial path that matched a resource
     * class, a sub-resource method or a sub-resource locator.
     * Entries are ordered in reverse request URI matching order, with the
     * root resource URI template last.
     *
     * @return a read-only list of URI templates for matched resources.
     */
    List getMatchedTemplates();

    /**
     * Get the path segments that contain a template variable.
     * All sequences of escaped octets are decoded,
     * equivalent to getPathSegments(true).
     *
     * @param name the template variable name
     * @return the path segments, the list will be empty the matching path does
     *         not contain the template
     */
    List getPathSegments(String name);

    /**
     * Get the path segments that contain a template variable.
     *
     * @param name the template variable name
     * @param decode controls whether sequences of escaped octets are decoded
     * (true) or not (false).
     * @return the path segments, the list will be empty the matching path does
     *         not contain the template
     */
    List getPathSegments(String name, boolean decode);
}