net.sf.saxon.expr.instruct
Class ParameterSet

java.lang.Object
  net.sf.saxon.expr.instruct.ParameterSet

public class ParameterSet
extends Object

A ParameterSet is a set of parameters supplied when calling a template. It is a collection of id-value pairs, the ids being numeric aliases for the parameter name, unique within a stylesheet

Field Summary

static ParameterSet	EMPTY_PARAMETER_SET
static int	NOT_SUPPLIED
static int	SUPPLIED
static int	SUPPLIED_AND_CHECKED

Constructor Summary

ParameterSet()
Create an empty parameter set

ParameterSet(int capacity)
Create a parameter set specifying the initial capacity

ParameterSet(ParameterSet existing, int extra)
Create a parameter set as a copy of an existing parameter set

Method Summary

void	clear() Clear all values
int	getIndex(int id) Get the index position of a parameter
ValueRepresentation	getValue(int index) Get the value of the parameter at a given index
boolean	isTypeChecked(int index) Determine whether the parameter at a given index has been type-checked
void	materializeValues() If any values are non-memo closures, expand them
void	put(int id, ValueRepresentation value, boolean checked) Add a parameter to the ParameterSet

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_PARAMETER_SET

public static ParameterSet EMPTY_PARAMETER_SET

NOT_SUPPLIED

public static final int NOT_SUPPLIED

See Also:

Constant Field Values

SUPPLIED

public static final int SUPPLIED

See Also:

Constant Field Values

SUPPLIED_AND_CHECKED

public static final int SUPPLIED_AND_CHECKED

See Also:

Constant Field Values

Constructor Detail

ParameterSet

public ParameterSet()

Create an empty parameter set

ParameterSet

public ParameterSet(int capacity)

Create a parameter set specifying the initial capacity

Parameters:

capacity - the nominal number of entries in the parameter set

ParameterSet

public ParameterSet(ParameterSet existing,
                    int extra)

Create a parameter set as a copy of an existing parameter set

Parameters:

existing - the parameter set to be copied

extra - the space to be allocated for additional entries

Method Detail

put

public void put(int id,
                ValueRepresentation value,
                boolean checked)

Add a parameter to the ParameterSet

Parameters:

id - The parameter id, representing its name.

value - The value of the parameter

checked - True if the caller has done static type checking against the required type

getIndex

public int getIndex(int id)

Get the index position of a parameter

Parameters:

id - The numeric parameter id, representing its name.

Returns:

The index position of the parameter, or -1 if not defined

getValue

public ValueRepresentation getValue(int index)

Get the value of the parameter at a given index

Parameters:

index - the position of the entry required

Returns:

the value of the parameter at that position

isTypeChecked

public boolean isTypeChecked(int index)

Determine whether the parameter at a given index has been type-checked

Parameters:

index - the position of the entry required

Returns:

true if the parameter at that position has been type-checked

clear

public void clear()

Clear all values

materializeValues

public void materializeValues()
                       throws XPathException

If any values are non-memo closures, expand them

Throws:

XPathException - if an error occurs evaluating any closures