net.sf.saxon.xqj
Class SaxonXQItemType

java.lang.Object
  extended by 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:

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


Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.