java.io.Serializable
, javax.xml.transform.SourceLocator
, LocationProvider
, SaxonLocator
, InstructionInfo
, org.xml.sax.Locator
public class NegateExpression extends UnaryExpression
EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, WATCH_METHOD
operand
Constructor | Description |
---|---|
NegateExpression(Expression base) |
Create a NegateExpression
|
Modifier and Type | Method | Description |
---|---|---|
Expression |
copy() |
Copy an expression.
|
protected java.lang.String |
displayOperator(Configuration config) |
Give a string representation of the operator for use in diagnostics
|
Item |
evaluateItem(XPathContext context) |
Evaluate the expression.
|
java.lang.String |
getExpressionName() |
Get a name identifying the kind of expression, in terms meaningful to a user.
|
ItemType |
getItemType(TypeHierarchy th) |
Determine the data type of the expression, if this is known statically
|
boolean |
isBackwardsCompatible() |
Ask whether the expression is to be evaluated in XPath 1.0 compatibility mode
|
void |
setBackwardsCompatible(boolean compatible) |
Set whether the expression is to be evaluated in XPath 1.0 compatibility mode
|
Expression |
typeCheck(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType) |
Type-check the expression.
|
addToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getEvaluationMethod, getExecutable, getHostLanguage, getImplementationMethod, getIntegerBounds, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasLoopingSubexpression, hasVariableBinding, implementsStaticTypeCheck, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterate, iterateEvents, iterateSameFocusSubExpressions, markTailFunctionCalls, process, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, typeError
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
computeCardinality, computeSpecialProperties, equals, explain, getBaseExpression, hashCode, iterateSubExpressions, optimize, promote, replaceSubExpression, simplify, toString
public NegateExpression(Expression base)
base
- the expression that computes the value whose sign is to be reversedpublic void setBackwardsCompatible(boolean compatible)
compatible
- true if XPath 1.0 compatibility mode is enabledpublic boolean isBackwardsCompatible()
public Expression typeCheck(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
UnaryExpression
typeCheck
in class UnaryExpression
visitor
- an expression visitorcontextItemType
- 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
XPathException
- if an error is discovered during this phase
(typically a type error)public ItemType getItemType(TypeHierarchy th)
getItemType
in class UnaryExpression
th
- the type hierarchy cachepublic Item evaluateItem(XPathContext context) throws XPathException
evaluateItem
in class Expression
context
- The context in which the expression is to be evaluatedXPathException
- if any dynamic error occurs evaluating the
expressionpublic Expression copy()
copy
in class Expression
protected java.lang.String displayOperator(Configuration config)
UnaryExpression
displayOperator
in class UnaryExpression
config
- the Saxon configurationpublic java.lang.String getExpressionName()
getExpressionName
in class Expression