net.sf.saxon.expr
Class ArithmeticExpression.DurationAddition

java.lang.Object
  net.sf.saxon.expr.ComputedExpression
      net.sf.saxon.expr.BinaryExpression
          net.sf.saxon.expr.ArithmeticExpression
              net.sf.saxon.expr.ArithmeticExpression.DurationAddition

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.SourceLocator, Container, Expression, InstructionInfoProvider

Enclosing class:

ArithmeticExpression

public static class ArithmeticExpression.DurationAddition
extends ArithmeticExpression

Inner class to handle addition and subtraction of two durations

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.saxon.expr.ArithmeticExpression

ArithmeticExpression.DateAndDuration, ArithmeticExpression.DateDifference, ArithmeticExpression.DurationAddition, ArithmeticExpression.DurationDivision, ArithmeticExpression.DurationMultiplication, ArithmeticExpression.NumericArithmetic

Field Summary

Fields inherited from class net.sf.saxon.expr.BinaryExpression

operand0, operand1, operator

Fields inherited from class net.sf.saxon.expr.ComputedExpression

locationId, staticProperties

Fields inherited from interface net.sf.saxon.expr.Expression

EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD

Constructor Summary

ArithmeticExpression.DurationAddition(Expression p1, int operator, Expression p2)

Method Summary

static Item	doArithmetic(Expression operand0, int operator, Expression operand1, XPathContext context)
Item	evaluateItem(XPathContext context) Evaluate the expression.

Methods inherited from class net.sf.saxon.expr.ArithmeticExpression

getItemType, typeCheck

Methods inherited from class net.sf.saxon.expr.BinaryExpression

computeCardinality, computeSpecialProperties, display, displayOperator, equals, getOperands, getOperator, hashCode, isAssociative, isCommutative, isInverse, iterateSubExpressions, optimize, promote, replaceSubExpression, simplify

Methods inherited from class net.sf.saxon.expr.ComputedExpression

adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, getCardinality, getColumnNumber, getConstructType, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, iterate, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation, typeError

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArithmeticExpression.DurationAddition

public ArithmeticExpression.DurationAddition(Expression p1,
                                             int operator,
                                             Expression p2)

Method Detail

evaluateItem

public Item evaluateItem(XPathContext context)
                  throws XPathException

Evaluate the expression.

Specified by:

evaluateItem in interface Expression

Overrides:

evaluateItem in class ArithmeticExpression

Parameters:

context - The context in which the expression is to be evaluated

Returns:

the node or atomic value that results from evaluating the expression; or null to indicate that the result is an empty sequence

Throws:

XPathException - if any dynamic error occurs evaluating the expression

doArithmetic

public static Item doArithmetic(Expression operand0,
                                int operator,
                                Expression operand1,
                                XPathContext context)
                         throws XPathException

Throws:

XPathException