net.sf.saxon.xqj
Class SaxonXQItemType

java.lang.Object
  net.sf.saxon.xqj.SaxonXQItemType

All Implemented Interfaces:

XQItemType, XQSequenceType

public class SaxonXQItemType
extends Object
implements XQItemType

Saxon implementation of the XQJ XQItemType interface

Field Summary

Fields inherited from interface javax.xml.xquery.XQItemType

XQBASETYPE_ANYATOMICTYPE, XQBASETYPE_ANYSIMPLETYPE, XQBASETYPE_ANYTYPE, XQBASETYPE_ANYURI, XQBASETYPE_BASE64BINARY, XQBASETYPE_BOOLEAN, XQBASETYPE_BYTE, XQBASETYPE_DATE, XQBASETYPE_DATETIME, XQBASETYPE_DAYTIMEDURATION, XQBASETYPE_DECIMAL, XQBASETYPE_DOUBLE, XQBASETYPE_DURATION, XQBASETYPE_ENTITIES, XQBASETYPE_ENTITY, XQBASETYPE_FLOAT, XQBASETYPE_GDAY, XQBASETYPE_GMONTH, XQBASETYPE_GMONTHDAY, XQBASETYPE_GYEAR, XQBASETYPE_GYEARMONTH, XQBASETYPE_HEXBINARY, XQBASETYPE_ID, XQBASETYPE_IDREF, XQBASETYPE_IDREFS, XQBASETYPE_INT, XQBASETYPE_INTEGER, XQBASETYPE_LANGUAGE, XQBASETYPE_LONG, XQBASETYPE_NAME, XQBASETYPE_NCNAME, XQBASETYPE_NEGATIVE_INTEGER, XQBASETYPE_NMTOKEN, XQBASETYPE_NMTOKENS, XQBASETYPE_NONNEGATIVE_INTEGER, XQBASETYPE_NONPOSITIVE_INTEGER, XQBASETYPE_NORMALIZED_STRING, XQBASETYPE_NOTATION, XQBASETYPE_POSITIVE_INTEGER, XQBASETYPE_QNAME, XQBASETYPE_SHORT, XQBASETYPE_STRING, XQBASETYPE_TIME, XQBASETYPE_TOKEN, XQBASETYPE_UNSIGNED_BYTE, XQBASETYPE_UNSIGNED_INT, XQBASETYPE_UNSIGNED_LONG, XQBASETYPE_UNSIGNED_SHORT, XQBASETYPE_UNTYPED, XQBASETYPE_UNTYPEDATOMIC, XQBASETYPE_YEARMONTHDURATION, XQITEMKIND_ATOMIC, XQITEMKIND_ATTRIBUTE, XQITEMKIND_COMMENT, XQITEMKIND_DOCUMENT, XQITEMKIND_DOCUMENT_ELEMENT, XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT, XQITEMKIND_ELEMENT, XQITEMKIND_ITEM, XQITEMKIND_NODE, XQITEMKIND_PI, XQITEMKIND_SCHEMA_ATTRIBUTE, XQITEMKIND_SCHEMA_ELEMENT, XQITEMKIND_TEXT

Fields inherited from interface javax.xml.xquery.XQSequenceType

OCC_EMPTY, OCC_EXACTLY_ONE, OCC_ONE_OR_MORE, OCC_ZERO_OR_MORE, OCC_ZERO_OR_ONE

Constructor Summary

protected	SaxonXQItemType(ItemType itemType, Configuration config)
protected	SaxonXQItemType(NodeInfo node)

Method Summary

boolean	equals(Object obj) Compares the specified object with this item type for equality.
int	getBaseType() Returns the base type of the item.
int	getItemKind() Returns the kind of the item.
int	getItemOccurrence() Returns the occurrence indicator for the item type.
XQItemType	getItemType() Returns the type of the item in the sequence type.
QName	getNodeName() Returns the name of the node in case the item kind is an XQITEMKIND_DOCUMENT_ELEMENT, XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT, XQITEMKIND_ELEMENT, XQITEMKIND_SCHEMA_ELEMENT, XQITEMKIND_ATTRIBUTE, or XQITEMKIND_SCHEMA_ATTRIBUTE.
String	getPIName() Returns the name of the processing instruction type.
URI	getSchemaURI() Returns the schema location URI of the schema that contains the item's element or type definition.
QName	getTypeName() Represents a type name (global or local).
int	hashCode() Returns a hash code consistent with the definition of the equals method.
boolean	isAnonymousType() Represents whether the item type is an anonymous type in the schema.
boolean	isElementNillable() Returns whether the element type is nillable or not.
String	toString() Returns a human-readable implementation-defined string representation of the item type.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SaxonXQItemType

protected SaxonXQItemType(ItemType itemType,
                          Configuration config)

SaxonXQItemType

protected SaxonXQItemType(NodeInfo node)

Method Detail

getBaseType

public int getBaseType()
                throws XQException

Description copied from interface: XQItemType

Returns the base type of the item. One of the XQBASETYPE_* constants.

XQJ defines a constant for each of the built-in schema types defined in XML Schema. For atomic types this is the closest matching built-in XML Schema type, for element and attributes the closest matching built-in XML Schema type this node is based on.

Specified by:

getBaseType in interface XQItemType

Returns:

int one of the XQBASETYPE_* constants indicating the basic type of the item

Throws:

XQException - if the item kind is not one of: XQITEMKIND_DOCUMENT_ELEMENT, XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT, XQITEMKIND_ELEMENT, XQITEMKIND_SCHEMA_ELEMENT, XQITEMKIND_ATTRIBUTE, XQITEMKIND_SCHEMA_ATTRIBUTE, or XQITEMKIND_ATOMIC

getItemKind

public int getItemKind()

Description copied from interface: XQItemType

Returns the kind of the item. One of the XQITEMKIND_* constants.

Specified by:

getItemKind in interface XQItemType

Returns:

int one of the XQITEMKIND_* constants indicating the basic kind of the item

getItemOccurrence

public int getItemOccurrence()

Description copied from interface: XQItemType

Returns the occurrence indicator for the item type. This method will always return the value XQSequenceType.OCC_EXACTLY_ONE.

Specified by:

getItemOccurrence in interface XQItemType

Specified by:

getItemOccurrence in interface XQSequenceType

Returns:

int indicating the occurrence indicator

getNodeName

public QName getNodeName()
                  throws XQException

Description copied from interface: XQItemType

Returns the name of the node in case the item kind is an XQITEMKIND_DOCUMENT_ELEMENT, XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT, XQITEMKIND_ELEMENT, XQITEMKIND_SCHEMA_ELEMENT, XQITEMKIND_ATTRIBUTE, or XQITEMKIND_SCHEMA_ATTRIBUTE. For example, in the case of a type for element "foo" this will return the QName foo. For wildcard entries a null value will be returned.

Specified by:

getNodeName in interface XQItemType

Returns:

QName for the name of the element, attribute, or document element node. null if it is a wildcard

Throws:

XQException - if the item kind is not one of: XQITEMKIND_DOCUMENT_ELEMENT, XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT, XQITEMKIND_ELEMENT, XQITEMKIND_SCHEMA_ELEMENT, XQITEMKIND_ATTRIBUTE, or XQITEMKIND_SCHEMA_ATTRIBUTE

getPIName

public String getPIName()
                 throws XQException

Description copied from interface: XQItemType

Returns the name of the processing instruction type. As such the item kind of this XQItemType must be XQITEMKIND_PI.

Specified by:

getPIName in interface XQItemType

Returns:

the name of the processing instruction type. null if it is a wildcard

Throws:

XQException - if the item kind is not XQITEMKIND_PI

getSchemaURI

public URI getSchemaURI()

Description copied from interface: XQItemType

Returns the schema location URI of the schema that contains the item's element or type definition. This method is implementation-definied and an implementation will return a null value if it does not support retrieving the schema location URI. If the item corresponds to a validated global element in a schema, the result will be the schema location URI to the XMLSchema containing the element definition. Otherwise if the item is a schema validated node, the result will be the schema location URI of the XMLSchema containing the type definition of that node. If the item is not schema validated, the result is null

Specified by:

getSchemaURI in interface XQItemType

Returns:

URI representing the schema location URI of the XMLSchema containing the global element definition or the type definition of the current item. null in case the item is not schema validated or if the implementation does not support retrieving the schema URI.

toString

public String toString()

Description copied from interface: XQItemType

Returns a human-readable implementation-defined string representation of the item type.

Specified by:

toString in interface XQItemType

Specified by:

toString in interface XQSequenceType

Overrides:

toString in class Object

Returns:

String a string representation of the item type

getTypeName

public QName getTypeName()
                  throws XQException

Description copied from interface: XQItemType

Represents a type name (global or local). This can be used to represent specific type name such as, element foo of type hatsize. The schema type name is represented as a single QName. If the return type is an anonymous type, the actual QName value returned is implementation defined.

Specified by:

getTypeName in interface XQItemType

Returns:

the QName of the schema type in case of a user defined or anonoymous types. For a built-in type, returns a predefined type name as QName (e.g.xs:anyType, xs:decimal, etc). Cannot be null

Throws:

XQException - if the item kind is not one of: XQITEMKIND_DOCUMENT_ELEMENT, XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT, XQITEMKIND_ATOMIC, XQITEMKIND_ELEMENT, XQITEMKIND_SCHEMA_ELEMENT, XQITEMKIND_ATTRIBUTE, or XQITEMKIND_SCHEMA_ATTRIBUTE

isAnonymousType

public boolean isAnonymousType()

Description copied from interface: XQItemType

Represents whether the item type is an anonymous type in the schema.

Specified by:

isAnonymousType in interface XQItemType

Returns:

true if the item type is an anonymous type in the schema, false otherwise

isElementNillable

public boolean isElementNillable()

Description copied from interface: XQItemType

Returns whether the element type is nillable or not.

Specified by:

isElementNillable in interface XQItemType

Returns:

true if the element type is nillable, false otherwise

getItemType

public XQItemType getItemType()

Description copied from interface: XQSequenceType

Returns the type of the item in the sequence type.

Specified by:

getItemType in interface XQSequenceType

Returns:

XQItemType representing the item type in the sequence. null is returned in case of an empty sequence.

equals

public boolean equals(Object obj)

Description copied from interface: XQItemType

Compares the specified object with this item type for equality. The result is true only if the argument is an item type object which represents the same XQuery item type.

In order to comply with the general contract of equals and hashCode across different implementations the following algorithm must be used. Return true if and only if both objects are XQItemType and:

• getItemKind() is equal
• if getBaseType() is supported for the item kind, it must be equal
• if getNodeName() is supported for the item kind, it must be equal
• getSchemaURI() is equal
• if getTypeName() is supported for the item kind, it must be equal
• isAnonymousType() is equal
• isElementNillable() is equal
• if getPIName() is supported for the item kind, it must be equal

Specified by:

equals in interface XQItemType

Specified by:

equals in interface XQSequenceType

Overrides:

equals in class Object

Parameters:

obj - an XQItemType object representing an XQuery item type

Returns:

true if the input item type object represents the same XQuery item type, false otherwise

hashCode

public int hashCode()

Description copied from interface: XQItemType

Returns a hash code consistent with the definition of the equals method.

In order to comply with the general contract of equals and hashCode across different implementations the following algorithm must be used:

  hashCode = this.getItemKind();
  if this.getSchemaURI != null
    hashCode = 31*hashCode + this.getSchemaURI().hashCode();
  if this.getBaseType() is supported for the item kind
    hashCode = 31*hashCode + this.getbaseType();
  if this.getNodeName () is supported for the item kind and
    this.getNodeName() != null
    hashCode = 31*hashCode + this.getNodeName().hashCode()
  if this.getTypeName () is supported for the item kind
    hashCode = 31*hashCode + this.getTypeName().hashCode();
  if this.getPIName () is supported for the item kind and
    this.getPIName () != null
    hashCode = 31*hashCode + this.getPIName().hashCode();
 

Specified by:

hashCode in interface XQItemType

Specified by:

hashCode in interface XQSequenceType

Overrides:

hashCode in class Object

Returns:

hash code for this item type