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1   /*
2    * Portions of this software was developed by employees of the National Institute
3    * of Standards and Technology (NIST), an agency of the Federal Government and is
4    * being made available as a public service. Pursuant to title 17 United States
5    * Code Section 105, works of NIST employees are not subject to copyright
6    * protection in the United States. This software may be subject to foreign
7    * copyright. Permission in the United States and in foreign countries, to the
8    * extent that NIST may hold copyright, to use, copy, modify, create derivative
9    * works, and distribute this software and its documentation without fee is hereby
10   * granted on a non-exclusive basis, provided that this notice and disclaimer
11   * of warranty appears in all copies.
12   *
13   * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
14   * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
15   * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
16   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
17   * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
18   * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
19   * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
20   * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
21   * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
22   * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
23   * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
24   * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
25   */
26  
27  package gov.nist.secauto.metaschema.core.resource;
28  
29  import gov.nist.secauto.metaschema.core.model.IResourceLoader;
30  import gov.nist.secauto.metaschema.core.model.IUriResolver;
31  
32  import java.net.URI;
33  
34  import edu.umd.cs.findbugs.annotations.NonNull;
35  
36  public class AbstractResourceLoader implements IResourceLoader {
37    /**
38     * An {@link IUriResolver} is not provided by default.
39     */
40    private IUriResolver uriResolver;
41  
42    @Override
43    public IUriResolver getUriResolver() {
44      return uriResolver;
45    }
46  
47    public void setUriResolver(@NonNull IUriResolver uriResolver) {
48      this.uriResolver = uriResolver;
49    }
50  
51    /**
52     * Resolve the provided URI, producing a resolved URI, which may point to a
53     * different resource than the provided URI.
54     *
55     * @param uri
56     *          the URI to resolve
57     * @return the resulting URI
58     */
59    @NonNull
60    protected URI resolve(@NonNull URI uri) {
61      IUriResolver resolver = getUriResolver();
62      return resolver == null ? uri : resolver.resolve(uri);
63    }
64  }