Multiplication.java
/*
* Portions of this software was developed by employees of the National Institute
* of Standards and Technology (NIST), an agency of the Federal Government and is
* being made available as a public service. Pursuant to title 17 United States
* Code Section 105, works of NIST employees are not subject to copyright
* protection in the United States. This software may be subject to foreign
* copyright. Permission in the United States and in foreign countries, to the
* extent that NIST may hold copyright, to use, copy, modify, create derivative
* works, and distribute this software and its documentation without fee is hereby
* granted on a non-exclusive basis, provided that this notice and disclaimer
* of warranty appears in all copies.
*
* THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
* EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
* THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
* INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
* SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT
* SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
* INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
* OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
* CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
* PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
* OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
*/
package gov.nist.secauto.metaschema.core.metapath;
import gov.nist.secauto.metaschema.core.metapath.function.FunctionUtils;
import gov.nist.secauto.metaschema.core.metapath.function.OperationFunctions;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IAnyAtomicItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IDayTimeDurationItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.INumericItem;
import gov.nist.secauto.metaschema.core.metapath.item.atomic.IYearMonthDurationItem;
import edu.umd.cs.findbugs.annotations.NonNull;
class Multiplication
extends AbstractBasicArithmeticExpression {
/**
* An expression that gets the product result by multiplying two values.
*
* @param left
* the item to be divided
* @param right
* the item to divide by
*/
protected Multiplication(@NonNull IExpression left, @NonNull IExpression right) {
super(left, right);
}
@Override
public <RESULT, CONTEXT> RESULT accept(IExpressionVisitor<RESULT, CONTEXT> visitor, CONTEXT context) {
return visitor.visitMultiplication(this, context);
}
/**
* Get the sum of two atomic items.
*
* @param left
* the first item to multiply
* @param right
* the second item to multiply
* @return the product of both items or an empty {@link ISequence} if either
* item is {@code null}
*/
@Override
@NonNull
protected IAnyAtomicItem operation(@NonNull IAnyAtomicItem left, @NonNull IAnyAtomicItem right) {
return multiply(left, right);
}
/**
* Get the sum of two atomic items.
*
* @param leftItem
* the first item to multiply
* @param rightItem
* the second item to multiply
* @return the product of both items
*/
@NonNull
public static IAnyAtomicItem multiply(@NonNull IAnyAtomicItem leftItem, // NOPMD - intentional
@NonNull IAnyAtomicItem rightItem) {
IAnyAtomicItem retval = null;
if (leftItem instanceof IYearMonthDurationItem) {
IYearMonthDurationItem left = (IYearMonthDurationItem) leftItem;
if (rightItem instanceof INumericItem) {
retval = OperationFunctions.opMultiplyYearMonthDuration(left, (INumericItem) rightItem);
}
} else if (leftItem instanceof IDayTimeDurationItem) {
IDayTimeDurationItem left = (IDayTimeDurationItem) leftItem;
if (rightItem instanceof INumericItem) {
retval = OperationFunctions.opMultiplyDayTimeDuration(left, (INumericItem) rightItem);
}
} else {
// handle as numeric
INumericItem left = FunctionUtils.toNumeric(leftItem);
if (rightItem instanceof INumericItem) {
INumericItem right = FunctionUtils.toNumeric(rightItem);
retval = OperationFunctions.opNumericMultiply(left, right);
} else if (rightItem instanceof IYearMonthDurationItem) {
retval = OperationFunctions.opMultiplyYearMonthDuration((IYearMonthDurationItem) rightItem, left);
} else if (rightItem instanceof IDayTimeDurationItem) {
retval = OperationFunctions.opMultiplyDayTimeDuration((IDayTimeDurationItem) rightItem, left);
}
}
if (retval == null) {
throw new InvalidTypeMetapathException(
null,
String.format("The expression '%s * %s' is not supported", leftItem.getClass().getName(),
rightItem.getClass().getName()));
}
return retval;
}
}