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.metapath;
28
29 import gov.nist.secauto.metaschema.core.metapath.function.library.FnBoolean;
30 import gov.nist.secauto.metaschema.core.metapath.item.atomic.IBooleanItem;
31
32 import java.util.Arrays;
33 import java.util.List;
34
35 import edu.umd.cs.findbugs.annotations.NonNull;
36
37 class Or // NOPMD - intentional name
38 extends AbstractNAryExpression
39 implements IBooleanLogicExpression {
40
41 @SuppressWarnings("null")
42 protected Or(@NonNull IExpression... expressions) {
43 this(Arrays.asList(expressions));
44 }
45
46 /**
47 * Determines the logical disjunction of the result of evaluating a list of
48 * expressions. The boolean result of each expression is determined by applying
49 * {@link FnBoolean#fnBooleanAsPrimitive(ISequence)} to each function's
50 * {@link ISequence} result.
51 *
52 * @param expressions
53 * the list of expressions
54 */
55 protected Or(@NonNull List<IExpression> expressions) {
56 super(expressions);
57 }
58
59 @Override
60 public <RESULT, CONTEXT> RESULT accept(IExpressionVisitor<RESULT, CONTEXT> visitor, CONTEXT context) {
61 return visitor.visitOr(this, context);
62 }
63
64 @Override
65 public ISequence<? extends IBooleanItem> accept(DynamicContext dynamicContext, ISequence<?> focus) {
66 boolean retval = false;
67 for (IExpression child : getChildren()) {
68 ISequence<?> result = child.accept(dynamicContext, focus);
69 if (FnBoolean.fnBooleanAsPrimitive(result)) {
70 retval = true;
71 break;
72 }
73 }
74 return ISequence.of(IBooleanItem.valueOf(retval));
75 }
76 }