Division.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 Division
extends AbstractBasicArithmeticExpression {
/**
* An expression that gets the quotient result by dividing the dividend by the
* divisor.
*
* @param dividend
* the expression whose result is to be divided
* @param divisor
* the expression whose result is to divide by
*/
protected Division(@NonNull IExpression dividend, @NonNull IExpression divisor) {
super(dividend, divisor);
}
@Override
public <RESULT, CONTEXT> RESULT accept(IExpressionVisitor<RESULT, CONTEXT> visitor, CONTEXT context) {
return visitor.visitDivision(this, context);
}
/**
* Get the quotient result by dividing the dividend by the divisor.
*
* @param dividend
* the item to be divided
* @param divisor
* the item to divide by
* @return the quotient result or an empty {@link ISequence} if either item is
* {@code null}
*/
@Override
@NonNull
protected IAnyAtomicItem operation(@NonNull IAnyAtomicItem dividend, @NonNull IAnyAtomicItem divisor) {
return divide(dividend, divisor);
}
/**
* Get the quotient result by dividing the dividend by the divisor.
*
* @param dividend
* the item to be divided
* @param divisor
* the item to divide by
* @return the quotient result
*/
@NonNull
public static IAnyAtomicItem divide(@NonNull IAnyAtomicItem dividend, // NOPMD - intentional
@NonNull IAnyAtomicItem divisor) {
IAnyAtomicItem retval = null;
if (dividend instanceof IYearMonthDurationItem) {
IYearMonthDurationItem left = (IYearMonthDurationItem) dividend;
if (divisor instanceof INumericItem) {
retval = OperationFunctions.opDivideYearMonthDuration(left, (INumericItem) divisor);
} else if (divisor instanceof IYearMonthDurationItem) {
// TODO: find a way to support this
throw new UnsupportedOperationException();
}
} else if (dividend instanceof IDayTimeDurationItem) {
IDayTimeDurationItem left = (IDayTimeDurationItem) dividend;
if (divisor instanceof INumericItem) {
retval = OperationFunctions.opDivideDayTimeDuration(left, (INumericItem) divisor);
} else if (divisor instanceof IDayTimeDurationItem) {
retval = OperationFunctions.opDivideDayTimeDurationByDayTimeDuration(left, (IDayTimeDurationItem) divisor);
}
} else {
// handle as numeric
INumericItem left = FunctionUtils.toNumeric(dividend);
if (divisor instanceof INumericItem) {
INumericItem right = FunctionUtils.toNumeric(divisor);
retval = OperationFunctions.opNumericDivide(left, right);
} else if (divisor instanceof IYearMonthDurationItem) {
retval = OperationFunctions.opMultiplyYearMonthDuration((IYearMonthDurationItem) divisor, left);
} else if (divisor instanceof IDayTimeDurationItem) {
retval = OperationFunctions.opMultiplyDayTimeDuration((IDayTimeDurationItem) divisor, left);
}
}
if (retval == null) {
throw new InvalidTypeMetapathException(
null,
String.format("The expression '%s / %s' is not supported", dividend.getClass().getName(),
divisor.getClass().getName()));
}
return retval;
}
}