## net.sf.saxon.style
Class XSLSort

    java.lang.Object
      net.sf.saxon.tree.NodeImpl
          net.sf.saxon.tree.ParentNodeImpl
              net.sf.saxon.tree.ElementImpl
                  net.sf.saxon.tree.ElementWithAttributes
                      net.sf.saxon.style.StyleElement
                          net.sf.saxon.style.XSLSort

All Implemented Interfaces:
  Container, FingerprintedNode, InstructionInfo, Item, LocationProvider, org.xml.sax.Locator, NodeInfo, SaxonLocator, javax.xml.transform.Source, javax.xml.transform.SourceLocator, ValueRepresentation

public class XSLSort
extends StyleElement

An xsl:sort element in the stylesheet.

Field Summary

Fields inherited from class net.sf.saxon.style.StyleElement
`defaultCollationName, defaultXPathNamespace, extensionNamespaces, REPORT_ALWAYS, REPORT_IF_INSTANTIATED, REPORT_UNLESS_FALLBACK_AVAILABLE, REPORT_UNLESS_FORWARDS_COMPATIBLE, reportingCircumstances, staticContext, validationError, version`

Fields inherited from class net.sf.saxon.tree.ElementWithAttributes
`attributeList, namespaceList`

Fields inherited from class net.sf.saxon.tree.ElementImpl
`nameCode, root, sequence`

Fields inherited from class net.sf.saxon.tree.NodeImpl
`index, NODE_LETTER, parent`

Fields inherited from interface net.sf.saxon.om.NodeInfo
`ALL_NAMESPACES, EMPTY_NAMESPACE_LIST, IS_DTD_TYPE, LOCAL_NAMESPACES, NO_NAMESPACES`

Fields inherited from interface net.sf.saxon.om.ValueRepresentation
`EMPTY_VALUE_ARRAY`

Constructor Summary
`XSLSort()`

Method Summary
`Expression` `compile(Executable exec)` Compile the instruction on the stylesheet tree into an executable instruction for use at run-time.
`protected ItemType` `getReturnedItemType()` Determine the type of item returned by this instruction (only relevant if it is an instruction).
`SortKeyDefinition` `getSortKeyDefinition()`
`boolean` `mayContainSequenceConstructor()` Determine whether this type of element is allowed to contain a sequence constructor
`void` `prepareAttributes()` Set the attribute list for the element.
`void` `validate()` Check that the stylesheet element is valid.

Methods inherited from class net.sf.saxon.style.StyleElement

`allocateLocationId, allocateSlots, backwardsCompatibleModeIsEnabled, bindVariable, checkEmpty, checkSortComesFirst, checkTopLevel, checkUnknownAttribute, checkWithinTemplate, compileError, compileError, compileError, compileSequenceConstructor, compileWarning, definesExcludedNamespace, definesExtensionElement, fallbackProcessing, fixupReferences, forwardsCompatibleModeIsEnabled, getAttributeSets, getAttributeValue, getCommonChildItemType, getConstructType, getContainingSlotManager, getContainingStylesheet, getDefaultCollationName, getDefaultXPathNamespace, getExecutable, getLastChildInstruction, getLineNumber, getLineNumber, getLocationProvider, getNamespaceResolver, getObjectFingerprint, getObjectNameCode, getPrecedence, getPreparedStylesheet, getPrincipalStylesheet, getProperties, getProperty, getSchemaType, getStaticContext, getStylesheetFunction, getSystemId, getTargetNamePool, getTypeAnnotation, getVersion, getWithParamInstructions, isExcludedNamespace, isExplaining, isExtensionNamespace, isInstruction, isPermittedChild, issueWarning, issueWarning, isTopLevel, makeAttributeValueTemplate, makeExpression, makeNameCode, makeNamespaceContext, makePattern, makeSequenceType, makeSortKeys, makeTraceInstruction, markTailCalls, mayContainFallback, postValidate, processAllAttributes, processAttributes, processDefaultCollationAttribute, processDefaultXPathNamespaceAttribute, processExcludedNamespaces, processExtensionElementAttribute, processVersionAttribute, reportAbsence, setLineNumber, setObjectNameCode, setValidationError, substituteFor, typeCheck, typeCheck, undeclaredNamespaceError, validateChildren, validateSubtree`

Methods inherited from class net.sf.saxon.tree.ElementWithAttributes
`copy, getAttributeList, getAttributeValue, getDeclaredNamespaces, getInScopeNamespaceCodes, getPrefixForURI, getURICodeForPrefix, getURIForPrefix, initialise, iteratePrefixes, sendNamespaceDeclarations, setNamespaceDeclarations`

Methods inherited from class net.sf.saxon.tree.ElementImpl
`addChild, compact, enumerateChildren, generateId, getBaseURI, getDocumentRoot, getFirstChild, getLastChild, getNameCode, getNodeKind, getNthChild, getRoot, getSequenceNumber, getStringValue, getStringValueCS, getSystemId, hasChildNodes, setNameCode, setSystemId, useChildrenArray`

Methods inherited from class net.sf.saxon.tree.NodeImpl
`atomize, compareOrder, getColumnNumber, getConfiguration, getDisplayName, getDocumentNumber, getFingerprint, getLocalPart, getNamePool, getNextInDocument, getNextSibling, getParent, getPrefix, getPreviousInDocument, getPreviousSibling, getPublicId, getTypeAnnotation, getTypedValue, getURI, isSameNodeInfo, iterateAxis, iterateAxis`

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

Methods inherited from interface org.xml.sax.Locator
`getColumnNumber, getPublicId, getSystemId`

Methods inherited from interface javax.xml.transform.SourceLocator
`getColumnNumber, getPublicId, getSystemId`

Methods inherited from interface net.sf.saxon.trace.InstructionInfo
`getSystemId`

Constructor Detail

### XSLSort

    public XSLSort()

Method Detail

### mayContainSequenceConstructor

    public boolean mayContainSequenceConstructor()

  Determine whether this type of element is allowed to contain a sequence constructor

  Overrides:
    `mayContainSequenceConstructor` in class `StyleElement`
  Returns:
    true: yes, it may contain a sequence constructor

### prepareAttributes

    public void prepareAttributes()
                           throws XPathException

  Description copied from class: `StyleElement`
  Set the attribute list for the element. This is called to process the attributes (note the distinction from processAttributes in the superclass). Must be supplied in a subclass

  Specified by:
    `prepareAttributes` in class `StyleElement`
  Throws:
    `XPathException`

### validate

    public void validate()
                  throws XPathException

  Description copied from class: `StyleElement`
  Check that the stylesheet element is valid. This is called once for each element, after the entire tree has been built. As well as validation, it can perform first-time initialisation. The default implementation does nothing; it is normally overriden in subclasses.

  Overrides:
    `validate` in class `StyleElement`
  Throws:
    `XPathException`

### getReturnedItemType

    protected ItemType getReturnedItemType()

  Determine the type of item returned by this instruction (only relevant if it is an instruction). Default implementation returns Type.ITEM, indicating that we don't know, it might be anything. Returns null in the case of an element such as xsl:sort or xsl:variable that can appear in a sequence constructor but contributes nothing to the result sequence.

  Overrides:
    `getReturnedItemType` in class `StyleElement`
  Returns:
    the item type returned

### compile

    public Expression compile(Executable exec)
                       throws XPathException

  Description copied from class: `StyleElement`
  Compile the instruction on the stylesheet tree into an executable instruction for use at run-time.

  Specified by:
    `compile` in class `StyleElement`
  Returns:
    either a ComputedExpression, or null. The value null is returned when compiling an instruction that returns a no-op, or when compiling a top-level object such as an xsl:template that compiles into something other than an instruction.
  Throws:
    `XPathException`

### getSortKeyDefinition

    public SortKeyDefinition getSortKeyDefinition()