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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.swid.builder;
28  
29  import java.util.Collection;
30  import java.util.regex.Pattern;
31  
32  public abstract class AbstractBuilder implements Builder {
33    protected void validateNonNull(String field, Object value) throws ValidationException {
34      if (value == null) {
35        throw new ValidationException("the field '" + field + "' must be provided");
36      }
37    }
38  
39    protected void validateNonEmpty(String field, String value) throws ValidationException {
40      validateNonNull(field, value);
41  
42      if (value.isEmpty()) {
43        throw new ValidationException("the field '" + field + "' must contain a non-empty value");
44      }
45  
46    }
47  
48    protected void validateNonEmpty(String field, Object[] value) throws ValidationException {
49      validateNonNull(field, value);
50  
51      if (value.length == 0) {
52        throw new ValidationException("the field '" + field + "' must be a non-empty array");
53      }
54  
55    }
56  
57    protected void validateNonEmpty(String field, byte[] value) throws ValidationException {
58      validateNonNull(field, value);
59  
60      if (value.length == 0) {
61        throw new ValidationException("the field '" + field + "' must be a non-empty array");
62      }
63  
64    }
65  
66    protected <T> void validateNonEmpty(String field, Collection<T> value) throws ValidationException {
67      validateNonNull(field, value);
68  
69      if (value.isEmpty()) {
70        throw new ValidationException("the field '" + field + "' must contain a non-empty value");
71      }
72  
73    }
74  
75    protected void validatePatternMatch(String field, Pattern pattern, String value) throws ValidationException {
76      validateNonNull(field, value);
77  
78      if (!pattern.matcher(value).matches()) {
79        StringBuilder builder = new StringBuilder();
80        builder.append("the value for field '");
81        builder.append(field);
82        builder.append("' must match the pattern '");
83        builder.append(pattern.pattern());
84        builder.append('\'');
85        throw new ValidationException(builder.toString());
86      }
87    }
88  
89    @Override
90    public final boolean isValid() {
91      try {
92        validate();
93      } catch (RuntimeException | ValidationException e) {
94        return false;
95      }
96      return true;
97    }
98  }