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27 
28 package com.sun.star.sdbcx.comp.hsqldb;
29 
30 import java.io.File;
31 import java.net.URL;
32 import java.net.URLClassLoader;
33 
34 final class NativeLibraries {
35     public static void load() {
36         if (System.getProperty( "os.name" ).startsWith("Windows")) {
37             loadLibrary("msvcr71");
38             loadLibrary("uwinapi");
39             loadLibrary("sal3");
40             loadLibrary("dbtoolsmi");
41         }
42         loadLibrary("hsqldb");
43     }
44 
45     private static void loadLibrary(String libname) {
46         // At least on Mac OS X Tiger, System.loadLibrary("hsqldb2") does not
47         // find the hsqldb2 library one directory above sdbc_hsqldb.jar, even
48         // though ".." is on the jar's Class-Path; however, the alternative
49         // code (needing Java 1.5, which is given for Mac OS X Tiger) works
50         // there:
51         try {
52             System.loadLibrary(libname);
53         } catch (UnsatisfiedLinkError e) {
54             ClassLoader cl = NativeLibraries.class.getClassLoader();
55             if (cl instanceof URLClassLoader) {
56                 URL url = ((URLClassLoader) cl).findResource(
57                     System.mapLibraryName(libname));
58                 if (url != null) {
59                     try {
60                         System.load(
61                             ((File) File.class.getConstructor(
62                                 new Class[] {
63                                     ClassLoader.getSystemClassLoader().
64                                     loadClass("java.net.URI") }).
65                              newInstance(
66                                  new Object[] {
67                                      URL.class.getMethod("toURI", new Class[0]).
68                                      invoke(url, (java.lang.Object[])null) })).
69                             getAbsolutePath());
70                     } catch (Throwable t) {
71                         throw new UnsatisfiedLinkError(
72                             e.toString()+ " - " + t.toString());
73                     }
74                 }
75             }
76         }
77     }
78 
79     private NativeLibraries() {}
80 }
81