net.sf.saxon.s9api

Class ItemTypeFactory

public class ItemTypeFactory extends Object

This class is used for creating ItemType objects.

The ItemTypeFactory class is thread-safe.

Constructor Summary
ItemTypeFactory(Processor processor)
Create an ItemTypeFactory
Method Summary
ItemTypegetAtomicType(QName name)
Get an item type representing an atomic type.
ItemTypegetAttributeTest(QName name, QName schemaType)
Get an ItemType that tests an element name and/or schema type.
ItemTypegetDocumentTest(ItemType elementTest)
Make an ItemType representing a document-node() test with an embedded element test.
ItemTypegetElementTest(QName name, QName schemaType, boolean nillable)
Make an ItemType that tests an element name and/or schema type.
XdmAtomicValuegetExternalObject(Object object)
Factory method to construct an "external object".
ItemTypegetExternalObjectType(Class externalClass)
Get an ItemType representing the type of a Java object when used as an external object for use in conjunction with calls on extension/external functions.
ItemTypegetItemType(XdmNodeKind kind, QName name)
Get an item type that matches nodes of a specified kind with a specified name.
ItemTypegetItemType(XdmItem item)
Get an ItemType representing the type of a supplied XdmItem.
ItemTypegetNodeKindTest(XdmNodeKind kind)
Get an item type that matches any node of a specified kind.
ItemTypegetSchemaAttributeTest(QName name)
Get an ItemType representing an attribute declaration in the schema.
ItemTypegetSchemaElementTest(QName name)
Make an ItemType representing an element declaration in the schema.

Constructor Detail

ItemTypeFactory

public ItemTypeFactory(Processor processor)
Create an ItemTypeFactory

Parameters: processor the processor used by this ItemTypeFactory. This must be supplied in the case of user-defined types or types that reference element or attribute names; for built-in types it can be omitted.

Method Detail

getAtomicType

public ItemType getAtomicType(QName name)
Get an item type representing an atomic type. This may be a built-in type in the XML Schema namespace, or a user-defined atomic type.

It is undefined whether two calls supplying the same QName will return the same ItemType object.

Parameters: name the name of the built-in or user-defined atomic type required

Returns: an ItemType object representing this built-in or user-defined atomic type

Throws: SaxonApiException if the type name is not known, or if the type identified by the name is not an atomic type.

getAttributeTest

public ItemType getAttributeTest(QName name, QName schemaType)
Get an ItemType that tests an element name and/or schema type. This is the equivalent of the XPath syntax element(element-name, type)

It is undefined whether two calls supplying the same argument values will return the same ItemType object.

Parameters: name the element name, or null if there is no constraint on the name (equivalent to specifying element(*, type)) schemaType the name of the required schema type, or null of there is no constraint on the type (equivalent to specifying element(name))

Returns: the constructed ItemType

Throws: SaxonApiException if the schema does not contain a global element declaration for the given name

getDocumentTest

public ItemType getDocumentTest(ItemType elementTest)
Make an ItemType representing a document-node() test with an embedded element test. This reflects the XPath syntax document-node(element(N, T)) or document-node(schema-element(N)).

It is undefined whether two calls supplying the same argument values will return the same ItemType object.

Parameters: elementTest the elementTest. An IllegalArgumentException is thrown if the supplied ItemTest is not an elementTest or schemaElementTest.

Returns: a new ItemType representing the document test

getElementTest

public ItemType getElementTest(QName name, QName schemaType, boolean nillable)
Make an ItemType that tests an element name and/or schema type. This is the equivalent of the XPath syntax element(element-name, type)

It is undefined whether two calls supplying the same argument values will return the same ItemType object.

Parameters: name the element name, or null if there is no constraint on the name (equivalent to specifying element(*, type)) schemaType the name of the required schema type, or null if there is no constraint on the type (equivalent to specifying element(name)) nillable if a nilled element is allowed to match the type (equivalent to specifying "?" after the type name). The value is ignored if schemaType is null.

Returns: the constructed ItemType

Throws: SaxonApiException if the schema does not contain a global element declaration for the given name

getExternalObject

public XdmAtomicValue getExternalObject(Object object)
Factory method to construct an "external object". This is an XDM value that wraps a Java object. Such values can be passed as parameters to stylesheets or queries, for use in conjunction with external (extension) functions.

Each call on this method will return a distinct XdmAtomicValue object.

Parameters: object the value to be wrapped as an external object

Returns: the object, wrapped as an XdmAtomicValue

getExternalObjectType

public ItemType getExternalObjectType(Class externalClass)
Get an ItemType representing the type of a Java object when used as an external object for use in conjunction with calls on extension/external functions.

Parameters: externalClass a Java class

Returns: the ItemType representing the type of external objects of this class

getItemType

public ItemType getItemType(XdmNodeKind kind, QName name)
Get an item type that matches nodes of a specified kind with a specified name.

This corresponds to the XPath syntactic forms element(name), attribute(name), and processing-instruction(name). In the case of processing-instruction, the supplied QName must have no namespace.

It is undefined whether two calls supplying the same argument values will return the same ItemType object.

Parameters: kind the kind of nodes that match name the name of the nodes that match

Returns: an ItemType that matches nodes of a given node kind with a given name

Throws: IllegalArgumentException if the node kind is other than element, attribute, or processing instruction, or if the node kind is processing instruction and the name is in a namespace.

getItemType

public ItemType getItemType(XdmItem item)
Get an ItemType representing the type of a supplied XdmItem. If the supplied item is an atomic value, the returned ItemType will reflect the most specific atomic type of the item. If the supplied item is a node, the returned item type will reflect the node kind, and if the node has a name, then its name. It will not reflect the type annotation.

Parameters: item the supplied item whose type is required

Returns: the type of the supplied item

getNodeKindTest

public ItemType getNodeKindTest(XdmNodeKind kind)
Get an item type that matches any node of a specified kind.

This corresponds to the XPath syntactic forms element(), attribute(), document-node(), text(), comment(), processing-instruction(). It also provides an option, not available in the XPath syntax, that matches namespace nodes.

It is undefined whether two calls supplying the same argument value will return the same ItemType object.

Parameters: kind the kind of node for which a NodeTest is required

Returns: an item type corresponding to the specified kind of node

getSchemaAttributeTest

public ItemType getSchemaAttributeTest(QName name)
Get an ItemType representing an attribute declaration in the schema. This is the equivalent of the XPath syntax schema-attribute(attribute-name)

It is undefined whether two calls supplying the same argument values will return the same ItemType object.

Parameters: name the attribute name

Returns: the ItemType

Throws: SaxonApiException if the schema does not contain a global attribute declaration for the given name

getSchemaElementTest

public ItemType getSchemaElementTest(QName name)
Make an ItemType representing an element declaration in the schema. This is the equivalent of the XPath syntax schema-element(element-name)

It is undefined whether two calls supplying the same argument values will return the same ItemType object.

Parameters: name the element name

Returns: the ItemType

Throws: SaxonApiException if the schema does not contain a global element declaration for the given name