net.sf.saxon.style

Class XSLGeneralVariable

java.lang.Object

net.sf.saxon.tree.linked.NodeImpl

net.sf.saxon.tree.linked.ParentNodeImpl

net.sf.saxon.tree.linked.ElementImpl

net.sf.saxon.style.StyleElement

net.sf.saxon.style.XSLGeneralVariable

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.Source, javax.xml.transform.SourceLocator, LocationProvider, SaxonLocator, PullEvent, Container, FingerprintedNode, Item, MutableNodeInfo, NamespaceResolver, NodeInfo, ValueRepresentation, InstructionInfo, SiblingCountingNode, org.xml.sax.Locator

Direct Known Subclasses:

XSLVariableDeclaration, XSLWithParam

public abstract class XSLGeneralVariable
extends StyleElement

This class defines common behaviour across xsl:variable, xsl:param, and xsl:with-param

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	assignable
protected GeneralVariable	compiledVariable
protected java.lang.String	constantText
protected boolean	global
protected boolean	implicitlyRequiredParam
protected boolean	redundant
protected boolean	requiredParam
protected SequenceType	requiredType
protected Expression	select
protected SlotManager	slotManager
protected boolean	tunnel

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

ACTION_COMPILE, ACTION_FIXUP, ACTION_OPTIMIZE, ACTION_PROCESS_ATTRIBUTES, ACTION_TYPECHECK, ACTION_VALIDATE, actionsCompleted, 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.linked.NodeImpl

NODE_LETTER

Fields inherited from interface net.sf.saxon.om.NodeInfo

ALL_NAMESPACES, EMPTY_NAMESPACE_LIST, IS_DTD_TYPE, IS_NILLED, LOCAL_NAMESPACES, NO_NAMESPACES

Constructor Summary

Constructors

Constructor and Description
XSLGeneralVariable()

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	allowsAsAttribute()
protected boolean	allowsRequired()
protected boolean	allowsTunnelAttribute()
protected boolean	allowsValue()
void	checkAgainstRequiredType(SequenceType required) Check the supplied select expression against the required type.
int	getConstructType() Get the type of construct.
protected ItemType	getReturnedItemType() Determine the type of item returned by this instruction (only relevant if it is an instruction).
java.lang.String	getVariableDisplayName() Get the display name of the variable.
StructuredQName	getVariableQName() Get the QName of the variable
protected void	initializeInstruction(Executable exec, Declaration decl, GeneralVariable var) Initialize - common code called from the compile() method of all subclasses
boolean	isAssignable() Test whether it is permitted to assign to the variable using the saxon:assign extension element.
boolean	isGlobal() Test whether this is a global variable or parameter
boolean	isRequiredParam() Test whether this is a required parameter (required="yes")
boolean	isTunnelParam() Test whether this is a tunnel parameter (tunnel="yes")
boolean	mayContainSequenceConstructor() Determine whether this type of element is allowed to contain a template-body
void	postValidate() Hook to allow additional validation of a parent element immediately after its children have been validated.
void	prepareAttributes() Set the attribute list for the element.
void	setRedundant() Mark this global variable as redundant.
protected void	setReferenceCount(GeneralVariable var)
void	validate(Declaration decl) Check that the stylesheet element is valid.

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

allocateLocationId, allocatePatternSlots, allocateSlots, bindVariable, checkEmpty, checkSortComesFirst, checkTopLevel, checkUnknownAttribute, compile, compileError, compileError, compileError, compileError, compileSequenceConstructor, compileWarning, compileWarning, definesExcludedNamespace, definesExtensionElement, fallbackProcessing, fixupReferences, forwardsCompatibleModeIsEnabled, getAttributeSets, getAttributeValue, getColumnNumber, getCommonChildItemType, getContainerGranularity, getContainingSlotManager, getContainingStylesheet, getDefaultCollationName, getDefaultXPathNamespace, getEffectiveVersion, getExecutable, getHostLanguage, getLastChildInstruction, getLineNumber, getLocationProvider, getNamespaceResolver, getObjectName, getPreparedStylesheet, getPrincipalStylesheetModule, getProcessorVersion, getProperties, getProperty, getSchemaType, getStaticContext, getSystemId, getTypeAnnotation, getWithParamInstructions, index, isActionCompleted, isDeclaration, isExcludedNamespace, isExplaining, isExtensionNamespace, isInstruction, isPermittedChild, issueWarning, issueWarning, isTopLevel, isXslt30Processor, makeAttributeValueTemplate, makeExpression, makeExpressionVisitor, makeNamespaceContext, makePattern, makeQName, makeSequenceType, makeSortKeys, makeTraceInstruction, markTailCalls, mayContainFallback, mayContainParam, processAllAttributes, processAttributes, processDefaultCollationAttribute, processDefaultXPathNamespaceAttribute, processExcludedNamespaces, processExtensionElementAttribute, processStandardAttributes, processVersionAttribute, reportAbsence, seesAvuncularVariables, setActionCompleted, setObjectName, setValidationError, substituteFor, typeCheck, typeCheck, undeclaredNamespaceError, validateChildren, validateSubtree, xPath10ModeIsEnabled

Methods inherited from class net.sf.saxon.tree.linked.ElementImpl

addAttribute, addNamespace, copy, delete, fixupInsertedNamespaces, generateId, getAttributeList, getAttributeValue, getAttributeValue, getBaseURI, getColumnNumber, getDeclaredNamespaces, getDocumentRoot, getInScopeNamespaceCodes, getLineNumber, getNameCode, getNamespaceList, getNodeKind, getPrefixForURI, getRoot, getSystemId, getTypeAnnotation, getURICodeForPrefix, getURICodeForPrefixCode, getURIForPrefix, gsetAttributeCollection, initialise, isId, isNilled, iteratePrefixes, removeAttribute, removeTypeAnnotation, rename, replaceStringValue, setAttributeList, setLineAndColumn, setLocation, setNameCode, setNamespaceDeclarations, setNamespaceList, setSystemId, setTypeAnnotation

Methods inherited from class net.sf.saxon.tree.linked.ParentNodeImpl

addChild, compact, enumerateChildren, getFirstChild, getLastChild, getNthChild, getNumberOfChildren, getRawSequenceNumber, getSequenceNumber, getStringValue, getStringValueCS, hasChildNodes, insertChildren, insertChildrenAt, removeChild, replaceChildrenAt, setChildren, setRawSequenceNumber

Methods inherited from class net.sf.saxon.tree.linked.NodeImpl

atomize, compareOrder, equals, getConfiguration, getDisplayName, getDocumentNumber, getFingerprint, getLocalPart, getNamePool, getNextInDocument, getNextSibling, getParent, getPhysicalRoot, getPrefix, getPreviousInDocument, getPreviousSibling, getPublicId, getRawParent, getSiblingPosition, getTypedValue, getURI, insertSiblings, isDeleted, isIdref, isSameNodeInfo, iterateAxis, iterateAxis, newBuilder, replace, setRawParent, setSiblingPosition

Methods inherited from class java.lang.Object

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

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

getLineNumber, getSystemId

Methods inherited from interface org.xml.sax.Locator

getColumnNumber, getPublicId

Methods inherited from interface javax.xml.transform.SourceLocator

getColumnNumber, getPublicId

Methods inherited from interface net.sf.saxon.om.NodeInfo

hashCode

Field Detail

select

protected Expression select

requiredType

protected SequenceType requiredType

constantText

protected java.lang.String constantText

global

protected boolean global

slotManager

protected SlotManager slotManager

assignable

protected boolean assignable

redundant

protected boolean redundant

requiredParam

protected boolean requiredParam

implicitlyRequiredParam

protected boolean implicitlyRequiredParam

tunnel

protected boolean tunnel

compiledVariable

protected GeneralVariable compiledVariable

Constructor Detail

XSLGeneralVariable

public XSLGeneralVariable()

Method Detail

getReturnedItemType

protected ItemType getReturnedItemType()

Determine the type of item returned by this instruction (only relevant if it is an instruction).

Overrides:

getReturnedItemType in class StyleElement

Returns:

the item type returned. This is null for a variable: we are not interested in the type of the variable, but in what the xsl:variable constributes to the result of the sequence constructor it is part of.

mayContainSequenceConstructor

public boolean mayContainSequenceConstructor()

Determine whether this type of element is allowed to contain a template-body

Overrides:

mayContainSequenceConstructor in class StyleElement

Returns:

true: yes, it may contain a template-body

allowsAsAttribute

protected boolean allowsAsAttribute()

allowsTunnelAttribute

protected boolean allowsTunnelAttribute()

allowsValue

protected boolean allowsValue()

allowsRequired

protected boolean allowsRequired()

isAssignable

public boolean isAssignable()

Test whether it is permitted to assign to the variable using the saxon:assign extension element.

Returns:

true if the extra attribute saxon:assignable="yes" is present.

isTunnelParam

public boolean isTunnelParam()

Test whether this is a tunnel parameter (tunnel="yes")

Returns:

true if this is a tunnel parameter

isRequiredParam

public boolean isRequiredParam()

Test whether this is a required parameter (required="yes")

Returns:

true if this is a required parameter

isGlobal

public boolean isGlobal()

Test whether this is a global variable or parameter

Returns:

true if this is global

getVariableDisplayName

public java.lang.String getVariableDisplayName()

Get the display name of the variable.

Returns:

the lexical QName

setRedundant

public void setRedundant()

Mark this global variable as redundant. This is done before prepareAttributes is called.

getVariableQName

public StructuredQName getVariableQName()

Get the QName of the variable

Returns:

the name as a structured QName, or a dummy name if the variable has no name attribute or has an invalid name attribute

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(Declaration decl)
              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

postValidate

public void postValidate()
                  throws XPathException

Hook to allow additional validation of a parent element immediately after its children have been validated.

Overrides:

postValidate in class StyleElement

Throws:

XPathException

checkAgainstRequiredType

public void checkAgainstRequiredType(SequenceType required)
                              throws XPathException

Check the supplied select expression against the required type.

Parameters:

required - The type required by the variable declaration, or in the case of xsl:with-param, the signature of the called template

Throws:

XPathException

initializeInstruction

protected void initializeInstruction(Executable exec,
                         Declaration decl,
                         GeneralVariable var)
                              throws XPathException

Initialize - common code called from the compile() method of all subclasses

Parameters:

exec - the executable

decl -

var - the representation of the variable declaration in the compiled executable

Throws:

XPathException

setReferenceCount

protected void setReferenceCount(GeneralVariable var)

getConstructType

public int getConstructType()

Get the type of construct. This will be a constant in class Location. This method is part of the InstructionInfo interface

Specified by:

getConstructType in interface InstructionInfo

Overrides:

getConstructType in class StyleElement

Returns:

an integer identifying the kind of construct