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## net.sf.saxon.functions
Class CollatingFunction

    java.lang.Object
      net.sf.saxon.expr.Expression
          net.sf.saxon.expr.FunctionCall
              net.sf.saxon.functions.SystemFunction
                  net.sf.saxon.functions.CollatingFunction

All Implemented Interfaces:
  Serializable, SourceLocator, Container, EvaluableItem, SequenceIterable, InstructionInfoProvider

Direct Known Subclasses:
  Compare, Contains, DeepEqual, DistinctValues, Index, IndexOf, Minimax

    public abstract class CollatingFunction

extends SystemFunction

Abstract superclass for all functions that take an optional collation argument

See Also:
  Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression
`EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD`

Constructor Summary
`CollatingFunction()`

Method Summary
`void` | `checkArguments(StaticContext env)` Method called during static type checking
`URI` | `getExpressionBaseURI()` Get the saved static base URI
`StringCollator` | `getStringCollator()` Get the collation if known statically, as a StringCollator object

Methods inherited from class net.sf.saxon.functions.SystemFunction
`computeCardinality, computeSpecialProperties, display, getDetails, getErrorCodeForTypeErrors, getItemType, main, makeSystemFunction, optimize, setDetails`

Methods inherited from class net.sf.saxon.expr.FunctionCall
`getArguments, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, preEvaluate, promote, replaceSubExpression, setArguments, setFunctionNameCode, simplify, typeCheck`

Methods inherited from class net.sf.saxon.expr.Expression
`adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, effectiveBooleanValue, evaluateAsString, evaluateItem, getCardinality, getColumnNumber, getContainingProcedure, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, iterate, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### CollatingFunction

    public CollatingFunction()

Method Detail

### checkArguments

    public void checkArguments(StaticContext env)
                        throws XPathException

  Description copied from class: `SystemFunction`
  Method called during static type checking

  Overrides:
    `checkArguments` in class `SystemFunction`
  Throws:
    `XPathException`

### getExpressionBaseURI

    public URI getExpressionBaseURI()

  Get the saved static base URI

### getStringCollator

    public StringCollator getStringCollator()

  Get the collation if known statically, as a StringCollator object

  Returns:
    a StringCollator. Return null if the collation is not known statically.

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Copyright (C) Michael H. Kay. All rights reserved.