ArithmeticExpression10

java.lang.Object
- net.sf.saxon.expr.Expression
- - net.sf.saxon.expr.BinaryExpression
  - - net.sf.saxon.expr.ArithmeticExpression10

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.SourceLocator, LocationProvider, SaxonLocator, EvaluableItem, SequenceIterable, InstructionInfo, org.xml.sax.Locator
```
public class ArithmeticExpression10
extends BinaryExpression
```
Arithmetic Expression: an expression using one of the operators plus, minus, multiply, div, idiv, mod, in backwards compatibility mode: see ArithmeticExpression for the non-backwards compatible case.

See Also:

Serialized Form

Field Summary
- Fields inherited from class net.sf.saxon.expr.BinaryExpression
  operand0, operand1, operator
- Fields inherited from class net.sf.saxon.expr.Expression
  EVALUATE_METHOD, ITERATE_METHOD, locationId, PROCESS_METHOD, staticProperties

Constructor Summary

Constructors
Constructor	Description
`ArithmeticExpression10(Expression p0, int operator, Expression p1)`	Create an arithmetic expression to be evaluated in XPath 1.0 mode

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Expression`	`copy()`	Copy an expression.
`Item`	`evaluateItem(XPathContext context)`	Evaluate the expression.
`ItemType`	`getItemType(TypeHierarchy th)`	Determine the data type of the expression, if this is known statically
`boolean`	`isBackwardsCompatible()`	Determine whether the expression is to be evaluated in backwards-compatible mode
`Expression`	`typeCheck(ExpressionVisitor visitor, ItemType contextItemType)`	Type-check the expression statically.

Methods inherited from class net.sf.saxon.expr.BinaryExpression
computeCardinality, computeSpecialProperties, displayOperator, equals, explain, getOperands, getOperator, hashCode, isAssociative, isCommutative, isInverse, iterateSubExpressions, optimize, promote, replaceSubExpression, setFlattened, simplify, toString

Methods inherited from class net.sf.saxon.expr.Expression
addToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, display, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluatePendingUpdates, explain, findParentOf, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasLoopingSubexpression, implementsStaticTypeCheck, isUpdatingExpression, iterate, iterateEvents, markTailFunctionCalls, process, resetLocalStaticProperties, setContainer, setFiltered, setLocationId, staticTypeCheck, suppressValidation, typeError

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ArithmeticExpression10
```
public ArithmeticExpression10(Expression p0,
                              int operator,
                              Expression p1)
```
    Create an arithmetic expression to be evaluated in XPath 1.0 mode
    
    Parameters:
    
    p0 - the first operand
    
    operator - the operator, for example Token.PLUS
    
    p1 - the second operand
- Method Detail
  - isBackwardsCompatible
```
public boolean isBackwardsCompatible()
```
    Determine whether the expression is to be evaluated in backwards-compatible mode
    
    Returns:
    
    true, always
  - typeCheck
```
public Expression typeCheck(ExpressionVisitor visitor,
                            ItemType contextItemType)
                     throws XPathException
```
    Type-check the expression statically. We try to work out which particular arithmetic function to use if the types of operands are known an compile time.
    
    Overrides:
    
    typeCheck in class BinaryExpression
    
    Parameters:
    
    visitor - an expression visitor
    
    contextItemType - the static type of "." at the point where this expression is invoked. The parameter is set to null if it is known statically that the context item will be undefined. If the type of the context item is not known statically, the argument is set to Type.ITEM_TYPE
    
    Returns:
    
    the original expression, rewritten to perform necessary run-time type checks, and to perform other type-related optimizations
    
    Throws:
    
    XPathException - if an error is discovered during this phase (typically a type error)
  - getItemType
```
public ItemType getItemType(TypeHierarchy th)
```
    Determine the data type of the expression, if this is known statically
    
    Specified by:
    
    getItemType in class Expression
    
    Parameters:
    
    th - the type hierarchy cache
    
    Returns:
    
    a value such as Type.STRING, Type.BOOLEAN, Type.NUMBER, Type.NODE, or Type.ITEM (meaning not known at compile time)
  - copy
```
public Expression copy()
```
    Copy an expression. This makes a deep copy.
    
    Specified by:
    
    copy in class Expression
    
    Returns:
    
    the copy of the original expression
  - evaluateItem
```
public Item evaluateItem(XPathContext context)
                  throws XPathException
```
    Evaluate the expression.
    
    Specified by:
    
    evaluateItem in interface EvaluableItem
    
    Overrides:
    
    evaluateItem in class Expression
    
    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

Class ArithmeticExpression10

Field Summary

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

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

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Constructor Detail

ArithmeticExpression10

Method Detail

isBackwardsCompatible

typeCheck

getItemType

copy

evaluateItem