org.ucl.xpath
Class DefaultDynamicContext

java.lang.Object
  org.ucl.xpath.DefaultStaticContext
      org.ucl.xpath.DefaultDynamicContext

All Implemented Interfaces:

DynamicContext, StaticContext

public class DefaultDynamicContext

extends DefaultStaticContext

implements DynamicContext

The default implementation of a Dynamic Context. Initializes and provides functionality of a dynamic context according to the XPath 2.0 specification.

Constructor Summary

DefaultDynamicContext(org.apache.xerces.xs.XSModel schema, org.w3c.dom.Document doc)
Constructor.

Method Summary

void	add_function_library(FunctionLibrary fl) Adds function definitions.
AnyType	context_item() Retrieve context item that is in focus
int	context_position() Retrieve the position of the focus
ResultSequence	evaluate_function(QName name, java.util.Collection args) Evaluate the function of the arguments.
Focus	focus() Return the focus
ResultSequence	get_doc(java.lang.String uri) get document
AnyType	get_variable(QName name) Retrieve the variable name
int	last() Retrieve the position of the last focus
int	node_position(org.w3c.dom.Node node) Retrieve integer of the position of node
void	set_focus(Focus f) Changes the current focus.
void	set_variable(QName var, AnyType val) Sets the value of a variable.
XDTDayTimeDuration	tz() Reads the day from a TimeDuration type

Methods inherited from class org.ucl.xpath.DefaultStaticContext

add_namespace, add_variable, attribute_declared, attribute_type_definition, base_uri, debug_print_vars, default_function_namespace, default_namespace, del_variable, derives_from, derives_from, destroy_scope, element_declared, element_type_definition, expand_elem_type_qname, expand_function_qname, expand_qname, function_exists, function, get_var, make_atomic, new_scope, prefix_exists, resolve_prefix, type_defined, type_defined, variable_exists, variable_in_scope, xpath1_compatible

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ucl.xpath.StaticContext

add_namespace, add_variable, attribute_declared, attribute_type_definition, base_uri, default_function_namespace, default_namespace, del_variable, derives_from, derives_from, destroy_scope, element_declared, element_type_definition, expand_elem_type_qname, expand_function_qname, expand_qname, function_exists, make_atomic, new_scope, prefix_exists, resolve_prefix, type_defined, variable_exists, variable_in_scope, xpath1_compatible

Constructor Detail

DefaultDynamicContext

public DefaultDynamicContext(org.apache.xerces.xs.XSModel schema,
                             org.w3c.dom.Document doc)

Constructor.

Parameters:

schema - Schema information of document. May be null

doc - Document [root] node of XML source.

Method Detail

tz

public XDTDayTimeDuration tz()

Reads the day from a TimeDuration type

Specified by:

tz in interface DynamicContext

Returns:

an xs:integer _tz

set_focus

public void set_focus(Focus f)

Changes the current focus.

Specified by:

set_focus in interface DynamicContext

Parameters:

f - focus to set

focus

public Focus focus()

Return the focus

Specified by:

focus in interface DynamicContext

Returns:

_focus

context_item

public AnyType context_item()

Retrieve context item that is in focus

Specified by:

context_item in interface DynamicContext

Returns:

an AnyType result from _focus.context_item()

context_position

public int context_position()

Retrieve the position of the focus

Specified by:

context_position in interface DynamicContext

Returns:

an integer result from _focus.position()

last

public int last()

Retrieve the position of the last focus

Specified by:

last in interface DynamicContext

Returns:

an integer result from _focus.last()

get_variable

public AnyType get_variable(QName name)

Retrieve the variable name

Specified by:

get_variable in interface DynamicContext

Parameters:

name - is the name of the variable.

Returns:

an AnyType result from get_var(name) or return NULL

evaluate_function

public ResultSequence evaluate_function(QName name,
                                        java.util.Collection args)
                                 throws DynamicError

Description copied from interface: DynamicContext

Evaluate the function of the arguments.

Specified by:

evaluate_function in interface DynamicContext

Parameters:

name - is the name.

args - are the arguments.

Returns:

a ResultSequence from funct.evaluate(args)

Throws:

DynamicError - dynamic error.

add_function_library

public void add_function_library(FunctionLibrary fl)

Adds function definitions.

Specified by:

add_function_library in interface StaticContext

Overrides:

add_function_library in class DefaultStaticContext

Parameters:

fl - Function library to add.

get_doc

public ResultSequence get_doc(java.lang.String uri)

get document

Specified by:

get_doc in interface DynamicContext

Parameters:

uri - is the URI of the document.

Returns:

a ResultSequence from ResultSequenceFactory.create_new()

set_variable

public void set_variable(QName var,
                         AnyType val)

Sets the value of a variable.

Specified by:

set_variable in interface DynamicContext

Overrides:

set_variable in class DefaultStaticContext

Parameters:

var - Variable name.

val - Variable value.

node_position

public int node_position(org.w3c.dom.Node node)

Retrieve integer of the position of node

Specified by:

node_position in interface DynamicContext

Parameters:

node - is the node.

Returns:

integer from _node_order.get(node)