net.sf.saxon.expr.accum

Class Accumulator

java.lang.Object

net.sf.saxon.expr.instruct.Actor

net.sf.saxon.expr.accum.Accumulator

All Implemented Interfaces:

SourceLocator, ExpressionOwner, Location, InstructionInfo, Locator

public class Accumulator
extends Actor

Represents a single accumulator declared in an XSLT 3.0 stylesheet

Field Summary

Fields inherited from class net.sf.saxon.expr.instruct.Actor

body

Constructor Summary

Constructors

Constructor and Description
Accumulator()

Method Summary

Modifier and Type	Method and Description
void	addChildExpression(Expression expression) Add an expression to the list of expressions used by this accumulator
void	export(ExpressionPresenter presenter) Export expression structure.
void	export(ExpressionPresenter out, Map<Component,Integer> componentIdMap) Export expression structure.
StructuredQName	getAccumulatorName() Get the name of the accumulator
int	getComponentKind() Get the kind of component that this represents, using integer constants such as StandardNames.XSL_FUNCTION
int	getConstructType() Get the type of construct.
int	getImportPrecedence() Get the import precedence
Expression	getInitialValueExpression() Get the expression that computes the initial value of the accumulator
StructuredQName	getObjectName() Get a name identifying the object of the expression, for example a function name, template name, variable name, key name, element name, etc.
SimpleMode	getPostDescentRules() Get the set of rules for phase="end", held in the form of a Mode object
SimpleMode	getPreDescentRules() Get the set of rules for phase="start", held in the form of a Mode object
SlotManager	getSlotManagerForInitialValueExpression() Get the slotManager to be used for evaluating the initial-value expression
SymbolicName	getSymbolicName() Get the symbolic name of the component
SequenceType	getType() Get the declared type of the accumulator.
boolean	isCompatible(Accumulator other) Determine whether this accumulator is compatible with one that it overrides
boolean	isDeclaredStreamable() Ask whether the accumulator is declared streamable
boolean	isTracing() Ask whether diagnostic tracing is enabled for this accumulator
boolean	isUniversallyApplicable() Ask whether this accumulator is universally appicable to all documents
void	setAccumulatorName(StructuredQName firstName) Set the name of the pre-descent function
void	setDeclaredStreamable(boolean streamable) Say whether the accumulator is declared streamable
void	setImportPrecedence(int importPrecedence) Set the import precedence
void	setInitialValueExpression(Expression initialValueExpression) Set the expression that computes the initial value of the accumulator
void	setPostDescentRules(SimpleMode postDescentRules) Set the set of rules for phase="end", held in the form of a Mode object
void	setPreDescentRules(SimpleMode preDescentRules) Set the set of rules for phase="start", held in the form of a Mode object
void	setSlotManagerForInitialValueExpression(SlotManager slotManagerForInitialValueExpression) Set the slotManager to be used for evaluating the initial-value expression
void	setTracing(boolean tracing) Say whether diagnostic tracing is to be enabled for this accumulator
void	setType(SequenceType type) Set the declared type of the accumulator.
void	setUniversallyApplicable(boolean universal) Say whether this accumulator is universally appicable to all documents

Methods inherited from class net.sf.saxon.expr.instruct.Actor

allocateAllBindingSlots, allocateBindingSlotsRecursive, getBody, getColumnNumber, getDeclaredVisibility, getDeclaringComponent, getLineNumber, getLocation, getPackageData, getProperties, getProperty, getPublicId, getRetainedStaticContext, getStackFrameMap, getSystemId, isExportable, makeDeclaringComponent, obtainDeclaringComponent, saveLocation, setBody, setChildExpression, setDeclaredVisibility, setDeclaringComponent, setLineNumber, setPackageData, setRetainedStaticContext, setStackFrameMap, setSystemId

Methods inherited from class java.lang.Object

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

Constructor Detail

Accumulator

public Accumulator()

Method Detail

getSymbolicName

public SymbolicName getSymbolicName()

Get the symbolic name of the component

Specified by:

getSymbolicName in class Actor

Returns:

the symbolic name

isDeclaredStreamable

public boolean isDeclaredStreamable()

Ask whether the accumulator is declared streamable

Returns:

true if it is declared with streamable="yes"

setDeclaredStreamable

public void setDeclaredStreamable(boolean streamable)

Say whether the accumulator is declared streamable

Parameters:

streamable - true if it is declared with streamable="yes"

getAccumulatorName

public StructuredQName getAccumulatorName()

Get the name of the accumulator

Returns:

the accumulator name

setAccumulatorName

public void setAccumulatorName(StructuredQName firstName)

Set the name of the pre-descent function

Parameters:

firstName - the function name (always present)

getImportPrecedence

public int getImportPrecedence()

Get the import precedence

Returns:

the import precedence of the accumulator

setImportPrecedence

public void setImportPrecedence(int importPrecedence)

Set the import precedence

Parameters:

importPrecedence - the import precedence of the accumulator

setUniversallyApplicable

public void setUniversallyApplicable(boolean universal)

Say whether this accumulator is universally appicable to all documents

Parameters:

universal - true if this accumulator is universally applicable

isUniversallyApplicable

public boolean isUniversallyApplicable()

Ask whether this accumulator is universally appicable to all documents

Returns:

true if this accumulator is universally applicable

isTracing

public boolean isTracing()

Ask whether diagnostic tracing is enabled for this accumulator

Returns:

true if diagnostic tracing is enabled

setTracing

public void setTracing(boolean tracing)

Say whether diagnostic tracing is to be enabled for this accumulator

Parameters:

tracing - true if diagnostic tracing is to be enabled

getSlotManagerForInitialValueExpression

public SlotManager getSlotManagerForInitialValueExpression()

Get the slotManager to be used for evaluating the initial-value expression

Returns:

the slotManager for the initial-value expression (defining any local variables declared and used within this expression)

setSlotManagerForInitialValueExpression

public void setSlotManagerForInitialValueExpression(SlotManager slotManagerForInitialValueExpression)

Set the slotManager to be used for evaluating the initial-value expression

Parameters:

slotManagerForInitialValueExpression - the slotManager for the initial-value expression (defining any local variables declared and used within this expression)

getPreDescentRules

public SimpleMode getPreDescentRules()

Get the set of rules for phase="start", held in the form of a Mode object

Returns:

the Mode object containing all the rules that apply to phase="start"

setPreDescentRules

public void setPreDescentRules(SimpleMode preDescentRules)

Set the set of rules for phase="start", held in the form of a Mode object

Parameters:

preDescentRules - the Mode object containing all the rules that apply to phase="start"

getPostDescentRules

public SimpleMode getPostDescentRules()

Get the set of rules for phase="end", held in the form of a Mode object

Returns:

the Mode object containing all the rules that apply to phase="end"

setPostDescentRules

public void setPostDescentRules(SimpleMode postDescentRules)

Set the set of rules for phase="end", held in the form of a Mode object

Parameters:

postDescentRules - the Mode object containing all the rules that apply to phase="end"

getInitialValueExpression

public Expression getInitialValueExpression()

Get the expression that computes the initial value of the accumulator

Returns:

the initial value expression

setInitialValueExpression

public void setInitialValueExpression(Expression initialValueExpression)

Set the expression that computes the initial value of the accumulator

Parameters:

initialValueExpression - the initial value expression

addChildExpression

public void addChildExpression(Expression expression)

Add an expression to the list of expressions used by this accumulator

Parameters:

expression - the expression to be added to the list

getType

public SequenceType getType()

Get the declared type of the accumulator. The initial value and all intermediate values must conform to this type

Returns:

the declared type of the accumulator

setType

public void setType(SequenceType type)

Set the declared type of the accumulator. The initial value and all intermediate values must conform to this type

Parameters:

type - the declared type of the accumulator

isCompatible

public boolean isCompatible(Accumulator other)

Determine whether this accumulator is compatible with one that it overrides

Parameters:

other - the accumlator that this one overrides

Returns:

true if they are compatible, as defined in the XSLT 3.0 specification

getComponentKind

public int getComponentKind()

Get the kind of component that this represents, using integer constants such as StandardNames.XSL_FUNCTION

Specified by:

getComponentKind in class Actor

getConstructType

public int getConstructType()

Get the type of construct. This will either be the fingerprint of a standard XSLT instruction name (values in StandardNames: all less than 1024) or it will be a constant in class LocationKind.

Returns:

an integer identifying the kind of construct

getObjectName

public StructuredQName getObjectName()

Get a name identifying the object of the expression, for example a function name, template name, variable name, key name, element name, etc. This is used only where the name is known statically.

Returns:

the QName of the object declared or manipulated by this instruction or expression

export

public void export(ExpressionPresenter presenter)
            throws XPathException

Export expression structure. The abstract expression tree is written to the supplied outputstream.

Specified by:

export in class Actor

Parameters:

presenter - the expression presenter used to generate the XML representation of the structure

Throws:

XPathException

export

public void export(ExpressionPresenter out,
                   Map<Component,Integer> componentIdMap)
            throws XPathException

Export expression structure. The abstract expression tree is written to the supplied outputstream.

Parameters:

out - the expression presenter used to display the structure

Throws:

XPathException