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.item.node.INodeItem;
30
31 import java.util.List;
32
33 import edu.umd.cs.findbugs.annotations.NonNull;
34
35 abstract class AbstractRelativePathExpression
36 extends AbstractPathExpression<INodeItem> {
37 @NonNull
38 private final IExpression left;
39 @NonNull
40 private final IExpression right;
41 @NonNull
42 private final Class<? extends INodeItem> staticResultType;
43
44 /**
45 * Construct a new relative path expression of "left/right".
46 *
47 * @param left
48 * the left part of the path
49 * @param right
50 * the right part of the path
51 */
52 @SuppressWarnings("null")
53 public AbstractRelativePathExpression(@NonNull IExpression left, @NonNull IExpression right) {
54 this.left = left;
55 this.right = right;
56 this.staticResultType = ExpressionUtils.analyzeStaticResultType(getBaseResultType(), List.of(left, right));
57 }
58
59 /**
60 * The expression associated with the left path segment.
61 *
62 * @return the expression
63 */
64 @NonNull
65 public IExpression getLeft() {
66 return left;
67 }
68
69 /**
70 * The expression associated with the right path segment.
71 *
72 * @return the expression
73 */
74 @NonNull
75 public IExpression getRight() {
76 return right;
77 }
78
79 @SuppressWarnings("null")
80 @Override
81 public List<? extends IExpression> getChildren() {
82 return List.of(left, right);
83 }
84
85 @Override
86 public final @NonNull Class<INodeItem> getBaseResultType() {
87 return INodeItem.class;
88 }
89
90 @Override
91 public Class<? extends INodeItem> getStaticResultType() {
92 return staticResultType;
93 }
94 }