RequireBundle.java

00001 /*
00002  * Copyright (c) 2006, KNOPFLERFISH project
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following
00007  * conditions are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  *
00012  * - Redistributions in binary form must reproduce the above
00013  *   copyright notice, this list of conditions and the following
00014  *   disclaimer in the documentation and/or other materials
00015  *   provided with the distribution.
00016  *
00017  * - Neither the name of the KNOPFLERFISH project nor the names of its
00018  *   contributors may be used to endorse or promote products derived
00019  *   from this software without specific prior written permission.
00020  *
00021  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00022  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00023  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00024  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
00025  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00026  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00027  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00028  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00029  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
00030  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00031  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
00032  * OF THE POSSIBILITY OF SUCH DAMAGE.
00033  */
00034 
00035 package org.knopflerfish.framework;
00036 
00037 import org.osgi.framework.*;
00038 
00039   
00040 class RequireBundle {
00041 
00042   final BundlePackages requestor;
00043   final String name;
00044   final String visibility;
00045   final String resolution;
00046   final VersionRange bundleRange;
00047   BundlePackages bpkgs = null;
00048 
00049   RequireBundle(BundlePackages requestor, String name, String visibility,
00050           String resolution, String range) {
00051     this.requestor = requestor;
00052     this.name = name;
00053     if (visibility != null) {
00054       this.visibility = visibility;
00055       // NYI warn if not a known value;
00056     } else {
00057       this.visibility = Constants.VISIBILITY_PRIVATE;
00058     }
00059     if (resolution != null) {
00060       this.resolution = resolution;
00061     } else {
00062       this.resolution = Constants.RESOLUTION_MANDATORY;
00063       // NYI warn if not a known value;
00064     }
00065     if (range != null) {
00066       this.bundleRange = new VersionRange(range);
00067     } else {
00068       this.bundleRange = VersionRange.defaultVersionRange;
00069     }
00070   }
00071 
00072 
00078   boolean overlap(RequireBundle rb) {
00079     if (visibility.equals(Constants.VISIBILITY_REEXPORT) &&
00080         !rb.visibility.equals(Constants.VISIBILITY_REEXPORT)) {
00081       return false;
00082     }
00083     if (resolution.equals(Constants.RESOLUTION_MANDATORY) &&
00084         !rb.resolution.equals(Constants.RESOLUTION_MANDATORY)) {
00085       return false;
00086     }
00087     return bundleRange.withinRange(rb.bundleRange);
00088   }
00089 
00090 }

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