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.FunctionUtils;
30 import gov.nist.secauto.metaschema.core.metapath.function.OperationFunctions;
31 import gov.nist.secauto.metaschema.core.metapath.item.atomic.IAnyAtomicItem;
32 import gov.nist.secauto.metaschema.core.metapath.item.atomic.IDayTimeDurationItem;
33 import gov.nist.secauto.metaschema.core.metapath.item.atomic.INumericItem;
34 import gov.nist.secauto.metaschema.core.metapath.item.atomic.IYearMonthDurationItem;
35
36 import edu.umd.cs.findbugs.annotations.NonNull;
37
38 class Multiplication
39 extends AbstractBasicArithmeticExpression {
40
41 /**
42 * An expression that gets the product result by multiplying two values.
43 *
44 * @param left
45 * the item to be divided
46 * @param right
47 * the item to divide by
48 */
49 protected Multiplication(@NonNull IExpression left, @NonNull IExpression right) {
50 super(left, right);
51 }
52
53 @Override
54 public <RESULT, CONTEXT> RESULT accept(IExpressionVisitor<RESULT, CONTEXT> visitor, CONTEXT context) {
55 return visitor.visitMultiplication(this, context);
56 }
57
58 /**
59 * Get the sum of two atomic items.
60 *
61 * @param left
62 * the first item to multiply
63 * @param right
64 * the second item to multiply
65 * @return the product of both items or an empty {@link ISequence} if either
66 * item is {@code null}
67 */
68 @Override
69 @NonNull
70 protected IAnyAtomicItem operation(@NonNull IAnyAtomicItem left, @NonNull IAnyAtomicItem right) {
71 return multiply(left, right);
72 }
73
74 /**
75 * Get the sum of two atomic items.
76 *
77 * @param leftItem
78 * the first item to multiply
79 * @param rightItem
80 * the second item to multiply
81 * @return the product of both items
82 */
83 @NonNull
84 public static IAnyAtomicItem multiply(@NonNull IAnyAtomicItem leftItem, // NOPMD - intentional
85 @NonNull IAnyAtomicItem rightItem) {
86 IAnyAtomicItem retval = null;
87 if (leftItem instanceof IYearMonthDurationItem) {
88 IYearMonthDurationItem left = (IYearMonthDurationItem) leftItem;
89 if (rightItem instanceof INumericItem) {
90 retval = OperationFunctions.opMultiplyYearMonthDuration(left, (INumericItem) rightItem);
91 }
92 } else if (leftItem instanceof IDayTimeDurationItem) {
93 IDayTimeDurationItem left = (IDayTimeDurationItem) leftItem;
94 if (rightItem instanceof INumericItem) {
95 retval = OperationFunctions.opMultiplyDayTimeDuration(left, (INumericItem) rightItem);
96 }
97 } else {
98 // handle as numeric
99 INumericItem left = FunctionUtils.toNumeric(leftItem);
100 if (rightItem instanceof INumericItem) {
101 INumericItem right = FunctionUtils.toNumeric(rightItem);
102 retval = OperationFunctions.opNumericMultiply(left, right);
103 } else if (rightItem instanceof IYearMonthDurationItem) {
104 retval = OperationFunctions.opMultiplyYearMonthDuration((IYearMonthDurationItem) rightItem, left);
105 } else if (rightItem instanceof IDayTimeDurationItem) {
106 retval = OperationFunctions.opMultiplyDayTimeDuration((IDayTimeDurationItem) rightItem, left);
107 }
108 }
109 if (retval == null) {
110 throw new InvalidTypeMetapathException(
111 null,
112 String.format("The expression '%s * %s' is not supported", leftItem.getClass().getName(),
113 rightItem.getClass().getName()));
114 }
115 return retval;
116 }
117 }