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/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.classfile;

import java.io.IOException;

/**
 * Specify the location of a codebase.
 *
 * @author David Hovemeyer
 */
public interface ICodeBaseLocator {
    /**
     * Get the codebase object.
     *
     * @return the codebase object
     */
    public ICodeBase openCodeBase() throws IOException, ResourceNotFoundException;

    /**
     * Get the codebase locator describing the location of a relative codebase.
     * This method is useful for getting the location of a codebase referred to
     * in the Class-Path attribute of a Jar manifest.
     *
     * @param relativePath
     *            the path of a relative codebase
     * @return codebase locator of the relative codebase whose path is given
     */
    public ICodeBaseLocator createRelativeCodeBaseLocator(String relativePath);

    /**
     * Convert the codebase locator to a string representation. If possible two
     * codebase locators that refer to the same codebase should produce the same
     * string representation. So, this string can serve as a key identifying the
     * codebase in a map.
     *
     * @return a string representation of the codebase
     */
    @Override
    public String toString();
}