net.sf.saxon.instruct
Class Template

java.lang.Object
  net.sf.saxon.instruct.Procedure
      net.sf.saxon.instruct.Template

All Implemented Interfaces:

Serializable, SourceLocator, LocationProvider, Container, InstructionInfoProvider

public class Template
extends Procedure
implements InstructionInfoProvider

An xsl:template element in the style sheet.

See Also:

Serialized Form

Constructor Summary

Template()
Create a template

Method Summary

void	apply(XPathContext context, Rule rule) Process the template, without returning any tail calls.
TailCall	applyLeavingTail(XPathContext context, Rule rule) Process this template, with the possibility of returning a tail call package if the template contains any tail calls that are to be performed by the caller.
TailCall	expand(XPathContext context) Expand the template.
InstructionInfo	getInstructionInfo() Get the InstructionInfo details about the construct.
int	getMinImportPrecedence() Get the minimum import precedence used by xsl:apply-imports
int	getPrecedence() Get the import precedence of the template
SequenceType	getRequiredType() Get the required type to be returned by this template
StructuredQName	getTemplateName() Get the name of the template (if it is named)
boolean	hasRequiredParams() Ask whether this template has one or more required parameters
void	init(StructuredQName templateName, int precedence, int minImportPrecedence) Initialize the template
void	setBody(Expression body) Set the expression that forms the body of the template
void	setHasRequiredParams(boolean has) Set whether this template has one or more required parameters
void	setRequiredType(SequenceType type) Set the required type to be returned by this template

Methods inherited from class net.sf.saxon.instruct.Procedure

getBody, getColumnNumber, getExecutable, getHostLanguage, getLineNumber, getLineNumber, getLocationProvider, getPublicId, getStackFrameMap, getSystemId, getSystemId, replaceSubExpression, setExecutable, setHostLanguage, setLineNumber, setStackFrameMap, setSystemId

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Template

public Template()

Create a template

Method Detail

init

public void init(StructuredQName templateName,
                 int precedence,
                 int minImportPrecedence)

Initialize the template

Parameters:

templateName - the name of the template (if any)

precedence - the import precedence

minImportPrecedence - the minimum import precedence to be considered in the search performed by apply-imports

setBody

public void setBody(Expression body)

Set the expression that forms the body of the template

Overrides:

setBody in class Procedure

Parameters:

body - the body of the template

getTemplateName

public StructuredQName getTemplateName()

Get the name of the template (if it is named)

Returns:

the template name, or null if unnamed

getPrecedence

public int getPrecedence()

Get the import precedence of the template

Returns:

the import precedence (a higher number means a higher precedence)

getMinImportPrecedence

public int getMinImportPrecedence()

Get the minimum import precedence used by xsl:apply-imports

Returns:

the minimum import precedence of templates that are candidates for calling by apply-imports

setHasRequiredParams

public void setHasRequiredParams(boolean has)

Set whether this template has one or more required parameters

Parameters:

has - true if the template has at least one required parameter

hasRequiredParams

public boolean hasRequiredParams()

Ask whether this template has one or more required parameters

Returns:

true if this template has at least one required parameter

setRequiredType

public void setRequiredType(SequenceType type)

Set the required type to be returned by this template

Parameters:

type - the required type as defined in the "as" attribute on the xsl:template element

getRequiredType

public SequenceType getRequiredType()

Get the required type to be returned by this template

Returns:

the required type as defined in the "as" attribute on the xsl:template element

apply

public void apply(XPathContext context,
                  Rule rule)
           throws XPathException

Process the template, without returning any tail calls. This path is used by xsl:apply-imports and xsl:next-match

Parameters:

context - The dynamic context, giving access to the current node,

rule - the template rule that caused this template to be invoked. When a template has a match pattern defined as a union, there can be more than one Rule referring to the same template, and further calls on next-match or apply-imports need to know which one in in force

Throws:

XPathException

applyLeavingTail

public TailCall applyLeavingTail(XPathContext context,
                                 Rule rule)
                          throws XPathException

Process this template, with the possibility of returning a tail call package if the template contains any tail calls that are to be performed by the caller.

Parameters:

context - the XPath dynamic context

rule - the template rule that caused this template to be invoked. When a template has a match pattern defined as a union, there can be more than one Rule referring to the same template, and further calls on next-match or apply-imports need to know which one in in force

Returns:

null if the template exited normally; but if it was a tail call, details of the call that hasn't been made yet and needs to be made by the caller

Throws:

XPathException

expand

public TailCall expand(XPathContext context)
                throws XPathException

Expand the template. Called when the template is invoked using xsl:call-template. Invoking a template by this method does not change the current template.

Parameters:

context - the XPath dynamic context

Returns:

null if the template exited normally; but if it was a tail call, details of the call that hasn't been made yet and needs to be made by the caller

Throws:

XPathException

getInstructionInfo

public InstructionInfo getInstructionInfo()

Get the InstructionInfo details about the construct. This information isn't used for tracing, but it is available when inspecting the context stack.

Specified by:

getInstructionInfo in interface InstructionInfoProvider