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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.pure.errorhandler;
18  
19  import javax.annotation.Nonnull;
20  import javax.annotation.Nullable;
21  
22  import com.helger.commons.io.resource.IReadableResource;
23  import com.helger.schematron.pure.model.IPSElement;
24  
25  /**
26   * Base interface for a Pure Schematron error handler.
27   *
28   * @author Philip Helger
29   */
30  public interface IPSErrorHandler
31  {
32    /**
33     * Emit a warning
34     *
35     * @param aRes
36     *        The resource in which the error occurred. May be <code>null</code>.
37     * @param aSourceElement
38     *        The source element where the warning is encountered. Maybe
39     *        <code>null</code> for XPath errors.
40     * @param sMessage
41     *        The main warning message. Never <code>null</code>.
42     */
43    void warn (@Nullable IReadableResource aRes, @Nullable IPSElement aSourceElement, @Nonnull String sMessage);
44  
45    /**
46     * Emit an error. Shortcut for
47     * {@link #error(IReadableResource, IPSElement, String, Throwable)} with
48     * <code>null</code> {@link IReadableResource} and <code>null</code>
49     * {@link Throwable}.
50     *
51     * @param aSourceElement
52     *        The source element where the warning is encountered. Maybe
53     *        <code>null</code> for XPath errors.
54     * @param sMessage
55     *        The main warning message. Never <code>null</code>.
56     */
57    void error (@Nullable IPSElement aSourceElement, @Nonnull String sMessage);
58  
59    /**
60     * Emit an error
61     *
62     * @param aRes
63     *        The resource in which the error occurred. May be <code>null</code>.
64     * @param aSourceElement
65     *        The source element where the warning is encountered. Maybe
66     *        <code>null</code> for XPath errors.
67     * @param sMessage
68     *        The main warning message. Never <code>null</code>.
69     * @param t
70     *        An optional exception that is the source of the error. May be
71     *        <code>null</code>.
72     */
73    void error (@Nullable IReadableResource aRes,
74                @Nullable IPSElement aSourceElement,
75                @Nonnull String sMessage,
76                @Nullable Throwable t);
77  }