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1   /**
2    * Copyright (C) 2014-2015 Philip Helger (www.helger.com)
3    * philip[at]helger[dot]com
4    *
5    * Licensed under the Apache License, Version 2.0 (the "License");
6    * you may not use this file except in compliance with the License.
7    * You may obtain a copy of the License at
8    *
9    *         http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package com.helger.schematron.svrl;
18  
19  import javax.annotation.Nonnull;
20  import javax.annotation.Nullable;
21  import javax.annotation.concurrent.Immutable;
22  import javax.xml.transform.Source;
23  
24  import org.oclc.purl.dsdl.svrl.SchematronOutputType;
25  import org.w3c.dom.Node;
26  
27  import com.helger.commons.annotation.PresentForCodeCoverage;
28  import com.helger.commons.io.resource.IReadableResource;
29  
30  /**
31   * This is the XML reader for Schematron SVRL documents. It reads XML DOM
32   * documents and returns {@link SchematronOutputType} elements. The reading
33   * itself is done with JAXB.<br>
34   *
35   * @author Philip Helger
36   */
37  @Immutable
38  public final class SVRLReader
39  {
40    @PresentForCodeCoverage
41    private static final SVRLReader s_aInstance = new SVRLReader ();
42  
43    private SVRLReader ()
44    {}
45  
46    /**
47     * Convert the passed resource into a SVRL domain object
48     *
49     * @param aRes
50     *        The resource to be converted. May not be <code>null</code>.
51     * @return <code>null</code> if the passed object could not be interpreted as
52     *         SVRL.
53     */
54    @Nullable
55    public static SchematronOutputType readXML (@Nonnull final IReadableResource aRes)
56    {
57      return new SVRLMarshaller ().read (aRes);
58    }
59  
60    /**
61     * Convert the passed W3C node into a SVRL domain object
62     *
63     * @param aNode
64     *        The node to be converted. May not be <code>null</code>.
65     * @return <code>null</code> if the passed object could not be interpreted as
66     *         SVRL.
67     */
68    @Nullable
69    public static SchematronOutputType readXML (@Nonnull final Node aNode)
70    {
71      return new SVRLMarshaller ().read (aNode);
72    }
73  
74    /**
75     * Convert the passed object into a SVRL domain object
76     *
77     * @param aSource
78     *        The source to be converted. May not be <code>null</code>.
79     * @return <code>null</code> if the passed object could not be interpreted as
80     *         SVRL.
81     */
82    @Nullable
83    public static SchematronOutputType readXML (@Nonnull final Source aSource)
84    {
85      return new SVRLMarshaller ().read (aSource);
86    }
87  }