Package javax.xml.xquery

Interface XQDataFactory

All Known Subinterfaces:
XQConnection
All Known Implementing Classes:
SaxonXQConnection, SaxonXQDataFactory
public interface XQDataFactory
This interface represents a factory to obtain sequences, item objects and types.

The items, sequences and types obtained through this interface are independent of any connection.

The items and sequences created are immutable. The close method can be called to close the item or sequence and release all resources associated with this item or sequence.

  • Method Details

    • createItemFromAtomicValue

      XQItem createItemFromAtomicValue(String value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the casting from xs:string rules outlined in 17.1.1 Casting from xs:string and xs:untypedAtomic, XQuery 1.0 and XPath 2.0 Functions and Operators. If the cast fails an XQException is thrown.
      Parameters:
      value - the lexical string value of the type
      type - the item type
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) any of the arguments are null, (2) given type is not an atomic type, (3) the conversion of the value to an XDM instance failed, or (4) the underlying object implementing the interface is closed

    • createItemFromString

      XQItem createItemFromString(String value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type, which must represent an xs:string or a type derived by restriction from xs:string. If the specified type is null, it defaults to xs:string.

      Subsequently the value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the conversion fails, an XQException will be thrown.

      Parameters:
      value - the value to be converted, cannot be null
      type - the type of the value to be bound to the external variable. The default type, xs:string, is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromDocument

      XQItem createItemFromDocument(String value, String baseURI, XQItemType type) throws XQException
      Creates an item from the given value.

      If the value represents a well-formed XML document, it will be parsed and results in a document node. The kind of the input type must be null, XQITEMKIND_DOCUMENT_ELEMENT, or XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT.

      The value is converted into an instance of the specified type according to the rules defined in 14.3 Mapping a Java XML document to an XQuery document node, XQuery API for Java (XQJ) 1.0.

      If the value is not well formed, or if a kind of the input type other than the values list above is specified, behavior is implementation defined and may raise an exception.

      Parameters:
      value - the value to be converted, cannot be null
      baseURI - an optional base URI, can be null. It can be used, for example, to resolve relative URIs and to include in error messages.
      type - the type of the value for the created document node. If null is specified, it behaves as if XQDataFactory.createDocumentElementType( XQDataFactory.createElementType(null, XQItemType.XQBASETYPE_XS_UNTYPED)) were passed in as the type parameter. That is, the type represents the XQuery sequence type document-node(element(*, xs:untyped))
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromDocument

      XQItem createItemFromDocument(Reader value, String baseURI, XQItemType type) throws XQException
      Creates an item from the given value.

      If the value represents a well-formed XML document, it will be parsed and results in a document node. The kind of the input type must be null, XQITEMKIND_DOCUMENT_ELEMENT, or XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT.

      The value is converted into an instance of the specified type according to the rules defined in 14.3 Mapping a Java XML document to an XQuery document node, XQuery API for Java (XQJ) 1.0.

      If the value is not well formed, or if a kind of the input type other than the values list above is specified, behavior is implementation defined and may raise an exception.

      Parameters:
      value - the value to be converted, cannot be null
      baseURI - an optional base URI, can be null. It can be used, for example, to resolve relative URIs and to include in error messages.
      type - the type of the value for the created document node. If null is specified, it behaves as if XQDataFactory.createDocumentElementType( XQDataFactory.createElementType(null, XQItemType.XQBASETYPE_XS_UNTYPED)) were passed in as the type parameter. That is, the type represents the XQuery sequence type document-node(element(*, xs:untyped))
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromDocument

      XQItem createItemFromDocument(InputStream value, String baseURI, XQItemType type) throws XQException
      Creates an item from the given value.

      If the value represents a well-formed XML document, it will be parsed and results in a document node. The kind of the input type must be null, XQITEMKIND_DOCUMENT_ELEMENT, or XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT.

      The value is converted into an instance of the specified type according to the rules defined in 14.3 Mapping a Java XML document to an XQuery document node, XQuery API for Java (XQJ) 1.0.

      If the value is not well formed, or if a kind of the input type other than the values list above is specified, behavior is implementation defined and may raise an exception.
      Parameters:
      value - the value to be converted, cannot be null
      baseURI - an optional base URI, can be null. It can be used, for example, to resolve relative URIs and to include in error messages.
      type - the type of the value for the created document node. If null is specified, it behaves as if XQDataFactory.createDocumentElementType( XQDataFactory.createElementType(null, XQItemType.XQBASETYPE_XS_UNTYPED)) were passed in as the type parameter. That is, the type represents the XQuery sequence type document-node(element(*, xs:untyped))
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromDocument

      XQItem createItemFromDocument(XMLStreamReader value, XQItemType type) throws XQException
      Creates an item from the given value.

      If the value represents a well-formed XML document, it results in a document node. The kind of the input type must be null, XQITEMKIND_DOCUMENT_ELEMENT or XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT.

      The value is converted into an instance of the specified type according to the rules defined in 14.3 Mapping a Java XML document to an XQuery document node, XQuery API for Java (XQJ) 1.0.

      If the value is not well formed, or if a kind of the input type other than the values list above is specified, behavior is implementation defined and may raise an exception.

      Parameters:
      value - the value to be converted, cannot be null
      type - the type of the value for the created document node. If null is specified, it behaves as if XQDataFactory.createDocumentElementType( XQDataFactory.createElementType(null, XQItemType.XQBASETYPE_XS_UNTYPED)) were passed in as the type parameter. That is, the type represents the XQuery sequence type document-node(element(*, xs:untyped))
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromDocument

      XQItem createItemFromDocument(Source value, XQItemType type) throws XQException
      Creates an item from the given Source. An XQJ implementation must at least support the following implementations:
      • javax.xml.transform.dom.DOMSource
      • javax.xml.transform.sax.SAXSource
      • javax.xml.transform.stream.StreamSource

      If the value represents a well-formed XML document, it will result in a document node. The kind of the input type must be null, XQITEMKIND_DOCUMENT_ELEMENT, or XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT.

      The value is converted into an instance of the specified type according to the rules defined in 14.3 Mapping a Java XML document to an XQuery document node, XQuery API for Java (XQJ) 1.0.

      If the value is not well formed, or if a kind of the input type other than the values list above is specified, behavior is implementation defined and may raise an exception.

      Parameters:
      value - the value to be converted, cannot be null
      type - the type of the value for the created document node. If null is specified, it behaves as if XQDataFactory.createDocumentElementType( XQDataFactory.createElementType(null, XQItemType.XQBASETYPE_XS_UNTYPED)) were passed in as the type parameter. That is, the type represents the XQuery sequence type document-node(element(*, xs:untyped))
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromObject

      XQItem createItemFromObject(Object value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted, cannot be null
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromBoolean

      XQItem createItemFromBoolean(boolean value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItemFromByte

      XQItem createItemFromByte(byte value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItemFromDouble

      XQItem createItemFromDouble(double value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItemFromFloat

      XQItem createItemFromFloat(float value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItemFromInt

      XQItem createItemFromInt(int value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItemFromLong

      XQItem createItemFromLong(long value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItemFromNode

      XQItem createItemFromNode(Node value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted, cannot be null
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - if (1) the value argument is null, (2) the conversion of the value to an XDM instance failed, or (3) the underlying object implementing the interface is closed

    • createItemFromShort

      XQItem createItemFromShort(short value, XQItemType type) throws XQException
      Creates an item from a given value. The value is converted into an instance of the specified type according to the rule defined in 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0. If the converstion fails, an XQException will be thrown.
      Parameters:
      value - the value to be converted
      type - the type of the value to be bound to the external variable. The default type of the value is used in case null is specified
      Returns:
      XQItem representing the resulting item
      Throws:
      XQException - (1) the conversion of the value to an XDM instance failed, or (2) the underlying object implementing the interface is closed

    • createItem

      XQItem createItem(XQItem item) throws XQException
      Creates a copy of the specified XQItem. This method can be used, for example, to copy an XQResultItem object so that the new item is not dependant on the connection.
      Parameters:
      item - the XQItem to copy
      Returns:
      XQItem independent of any underlying XQConnection is created
      Throws:
      XQException - if (1) the specified item is null, (2) the underlying object implementing the interface is closed, (3) the specified item is closed

    • createSequence

      XQSequence createSequence(XQSequence s) throws XQException
      Creates a copy of the specified XQSequence. The newly created XQSequence is scrollable and independent of any underlying XQConnection. The new XQSequence will contain all items from the specified XQSequence starting from its current position. The copy process will implicitly perform next operations on the specified sequence to read the items. All items are consumed, the current position of the cursor is set to point after the last item.
      Parameters:
      s - input sequence
      Returns:
      XQSequence representing a copy of the input sequence
      Throws:
      XQException - if (1) there are errors accessing the items in the specified sequence, (2) the specified sequence is closed, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) the s parameter is null, or (5) the underlying object implementing the interface is closed

    • createSequence

      XQSequence createSequence(Iterator i) throws XQException
      Creates an XQSequence, containing all the items from the iterator. The newly created XQSequence is scrollable and independent of any underlying XQConnection.

      If the iterator returns an XQItem, it is added to the sequence. If the iterator returns any other object, an item is added to the sequence following the rules from 14.2 Mapping a Java Data Type to an XQuery Data Type, XQuery API for Java (XQJ) 1.0.

      If the iterator does not return any items, then an empty sequence is created.

      Parameters:
      i - input iterator
      Returns:
      XQSequence representing the sequence containing all items from the input iterator
      Throws:
      XQException - if (1) the conversion of any of the objects in the iterator to item fails, (2) the i parameter is null, or (3) underlying object implementing the interface is closed

    • createAtomicType

      XQItemType createAtomicType(int basetype) throws XQException
      Creates a new XQItemType object representing an XQuery atomic type. The item kind of the item type will be XQItemType.XQITEMKIND_ATOMIC.
      Example - 
        XQConnection conn = ...;

  // to create xs:integer item type
  conn.createAtomicType(XQItemType.XQBASETYPE_INTEGER);
      Parameters:
      basetype - one of the XQItemType.XQBASETYPE_* constants. All basetype constants except the following are valid: 
                        XQItemType.XQBASETYPE_UNTYPED
                  XQItemType.XQBASETYPE_ANYTYPE
                  XQItemType.XQBASETYPE_IDREFS
                  XQItemType.XQBASETYPE_NMTOKENS
                  XQItemType.XQBASETYPE_ENTITIES
                  XQItemType.XQBASETYPE_ANYSIMPLETYPE
      Returns:
      a new XQItemType representing the atomic type
      Throws:
      XQException - if (1) an invalid basetype value is passed in, or (2) the underlying object implementing the interface is closed

    • createAtomicType

      XQItemType createAtomicType(int basetype, QName typename, URI schemaURI) throws XQException
      Creates a new XQItemType object representing an XQuery atomic type. The item kind of the item type will be XQItemType.XQITEMKIND_ATOMIC.
      Example - 
      
  XQConnection conn = ...;

  // to create po:hatsize atomic item type
  conn.createAtomicType(XQItemType.XQBASETYPE_INTEGER,
                  new QName("http://www.hatsizes.com", "hatsize","po"),
                  new URI("http://hatschema.com"));
      Parameters:
      basetype - one of the XQItemType.XQBASETYPE_* constants. All basetype constants except the following are valid: 
                         XQItemType.XQBASETYPE_UNTYPED
                   XQItemType.XQBASETYPE_ANYTYPE
                   XQItemType.XQBASETYPE_IDREFS
                   XQItemType.XQBASETYPE_NMTOKENS
                   XQItemType.XQBASETYPE_ENTITIES
                   XQItemType.XQBASETYPE_ANYSIMPLETYPE
      typename - the QName of the type. If the QName refers to a predefinied type, it must match the basetype. Can be null
      schemaURI - the URI to the schema. Can be null. This can only be specified if the typename is also specified
      Returns:
      a new XQItemType representing the atomic type
      Throws:
      XQException - if (1) an invalid basetype value is passed in, (2) the underlying object implementing the interface is closed, (3) the implementation does not support user-defined XML schema types, or (4) if the typename refers to a predefinied type and does not match basetype

    • createAttributeType

      XQItemType createAttributeType(QName nodename, int basetype) throws XQException
      Creates a new XQItemType object representing the XQuery attribute(nodename, basetype) type with the given node name and base type. This method can be used to create item type for attributes with a pre-defined schema type.

      Example - 
      
  XQConnection conn = ..; // An XQuery connection

  - attribute() // no node name, pass null for the node name

    conn.createAttributeType(null, XQItemType.XQBASETYPE_ANYSIMPLETYPE);

  - attribute (*)  // equivalent to attribute()

    conn.createAttributeType(null, XQItemType.XQBASETYPE_ANYSIMPLETYPE);

  - attribute (person) // attribute of name person and any simple type.

    conn.createAttributeType(new QName("person"), XQItemType.XQBASETYPE_ANYSIMPLETYPE);

  - attribute(foo:bar) // node name foo:bar, type is any simple type

    conn.createAttributeType(new QName("http://www.foo.com", "bar","foo"),
                             XQItemType.XQBASETYPE_ANYSIMPLETYPE);

  - attribute(foo:bar, xs:integer) // node name foo:bar, type is xs:integer

    conn.createAttributeType(new QName("http://www.foo.com", "bar","foo"),
                             XQItemType.XQBASETYPE_INTEGER);
      Parameters:
      nodename - specifies the name of the node.null indicates a wildcard for the node name
      basetype - the base type of the attribute. One of the XQItemType.XQBASETYPE_* other than XQItemType.XQBASETYPE_UNTYPED or XQItemType.XQBASETYPE_ANYTYPE
      Returns:
      a new XQItemType representing the XQuery attribute(nodename, basetype) type
      Throws:
      XQException - if (1) the underlying object implementing the interface is closed or (2) if the base type is one of: XQItemType.XQBASETYPE_UNTYPED or XQItemType.XQBASETYPE_ANYTYPE

    • createAttributeType

      XQItemType createAttributeType(QName nodename, int basetype, QName typename, URI schemaURI) throws XQException
      Creates a new XQItemType object representing the XQuery attribute(nodename,basetype,typename,schemaURI) type, with the given node name, base type, schema type name and schema URI. The type name can reference either pre-defined simple types or user-defined simple types.

      Example - 
      
  XQConnection conn = ..; // An XQuery connection

  - attribute (name, employeename) // attribute name of type employeename

  conn.createAttributeType(new QName("name"), XQItemType.XQBASETYPE_ANYSIMPLETYPE,
                           new QName("employeename"), null);

  - attribute (foo:bar, po:city)
  where the prefix foo refers to the namespace http://www.foo.com and the
  prefix po refers to the namespace "http://www.address.com"

  conn.createAttributeType(new QName("http://www.foo.com", "bar","foo"),
                           XQItemType.XQBASETYPE_ANYSIMPLETYPE,
                           new QName("http://address.com", "address","po"), null);

  - attribute (zip, zipcode) // attribute zip of type zipchode which derives from
                             // xs:string

  conn.createAttributeType(new QName("zip"), XQItemType.XQBASETYPE_STRING,
                           new QName("zipcode"), null);

  - attribute(foo:bar, po:hatsize)
  where the prefix foo refers to the namespace http://www.foo.com and the
  prefix po refers to the namespace "http://www.hatsizes.com"
  with schema URI "http://hatschema.com"

  conn.createAttributeType(new QName("http://www.foo.com", "bar","foo"),
                  XQItemType.XQBASETYPE_INTEGER,
                  new QName("http://www.hatsizes.com", "hatsize","po"),
                  new QName("http://hatschema.com"));
      Parameters:
      nodename - specifies the name of the node.null indicates a wildcard for the node name
      basetype - the base type of the attribute. One of the XQItemTyupe.XQBASETYPE_* constants other than XQItemType.XQBASETYPE_UNTYPED or XQItemType.XQBASETYPE_ANYTYPE
      typename - the QName of the type. If the QName refers to a predefinied type, it must match the basetype. Can be null.
      schemaURI - the URI to the schema. Can be null. This can only be specified if the typename is also specified
      Returns:
      a new XQItemType representing the XQuery attribute(nodename,basetype, typename,schemaURI) type.
      Throws:
      XQException - if (1) the underlying object implementing the interface is closed, (2) if the base type is one of: XQItemType.XQBASETYPE_UNTYPED or XQItemType.XQBASETYPE_ANYTYPE, (3) the schema URI is specified and the typename is not specified, (4) the implementation does not support user-defined XML schema types, or (5) if the typename refers to a predefinied type and does not match basetype

    • createSchemaAttributeType

      XQItemType createSchemaAttributeType(QName nodename, int basetype, URI schemaURI) throws XQException
      Creates a new XQItemType object representing the XQuery schema-attribute(nodename,basetype,schemaURI) type, with the given node name, base type, and schema URI.

      Example - 
      
     XQConnection conn = ..; // An XQuery connection

     - schema-attribute (name) // schema-attribute name, found in the schema
                               // available at http://customerschema.com

     conn.createSchemaAttributeType(new QName("name"),
                  XQItemType.XQBASETYPE_STRING,
                  new URI(http://customerschema.com));
      Parameters:
      nodename - specifies the name of the node
      basetype - the base type of the attribute. One of the XQItemTyupe.XQBASETYPE_* constants other than XQItemType.XQBASETYPE_UNTYPED or XQItemType.XQBASETYPE_ANYTYPE
      schemaURI - the URI to the schema. Can be null
      Returns:
      a new XQItemType representing the XQuery schema-attribute(nodename,basetype, schemaURI) type
      Throws:
      XQException - if (1) the node name is null, (2) if the base type is one of: XQItemType.XQBASETYPE_UNTYPED or XQItemType.XQBASETYPE_ANYTYPE, (3) the underlying object implementing the interface is closed, or (4) the implementation does not support user-defined XML schema types

    • createCommentType

      XQItemType createCommentType() throws XQException
      Creates a new XQItemType object representing the XQuery comment() type. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_COMMENT.

      Example - 
        XQConnection conn = ..; // An XQuery connection
  XQItemType cmttype = conn.createCommentType();

  int itemkind = cmttype.getItemKind(); // will be XQItemType.XQITEMKIND_COMMENT

  XQExpression expr = conn.createExpression();
  XQSequence result = expr.executeQuery("<!-- comments -->");

  result.next();
  boolean pi = result.instanceOf(cmttype);  // will be true
      Returns:
      a new XQItemType representing the XQuery comment() type
      Throws:
      XQException - if the underlying object implementing the interface is closed

    • createDocumentElementType

      XQItemType createDocumentElementType(XQItemType elementType) throws XQException
      Creates a new XQItemType object representing the XQuery document-node(elementType) type containing a single element. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_DOCUMENT_ELEMENT and the base type set to the item type of the input elementType.
      Parameters:
      elementType - an XQItemType object representing an XQuery element() type, cannot be null
      Returns:
      a new XQItemType representing the XQuery document-node(elementType) type containing a single element
      Throws:
      XQException - if (1) the underlying object implementing the interface is closed or (2) the elementType has an item kind different from XQItemType.XQITEMKIND_ELEMENT, (3) the elementType argument is null, or (4) the implementation does not support user-defined XML schema types

    • createDocumentSchemaElementType

      XQItemType createDocumentSchemaElementType(XQItemType elementType) throws XQException
      Creates a new XQItemType object representing the XQuery document-node(elementType) type containing a single schema-element(...). The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_DOCUMENT_SCHEMA_ELEMENT and the base type set to the item type of the input elementType.
      Parameters:
      elementType - an XQItemType object representing an XQuery schema-element(...) type, cannot be null
      Returns:
      a new XQItemType representing the XQuery document-node(elementType) type containing a single schema-element(...) element
      Throws:
      XQException - if (1) the underlying object implementing the interface is closed or (2) the elementType has an item kind different from XQItemType.XQITEMKIND_SCHEMA_ELEMENT, (3) the elementType argument is null, (4) the implementation does not support user-defined XML schema types

    • createDocumentType

      XQItemType createDocumentType() throws XQException
      Creates a new XQItemType object representing the XQuery document-node() type. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_DOCUMENT.
      Returns:
      a new XQItemType representing the XQuery document-node() type
      Throws:
      XQException - if the underlying object implementing the interface is closed

    • createElementType

      XQItemType createElementType(QName nodename, int basetype) throws XQException
      Creates a new XQItemType object representing the XQuery element(nodename, basetype) type, with the given node name and base type. This method can be used to create item type for elements with a pre-defined schema type.

      Example - 
        XQConnection conn = ..; // An XQuery connection
  - element() // no node name, pass null for the node name

  conn.createElementType(null, XQItemType.XQBASETYPE_ANYTYPE);

  - element (*)  // equivalent to element()

  conn.createElementType(null, XQItemType.XQBASETYPE_ANYTYPE);

  - element(person) // element of name person and any type.

  conn.createElementType(new QName("person"), XQItemType.XQBASETYPE_ANYTYPE);

  - element(foo:bar) // node name foo:bar, type is anytype

  conn.createElementType(new QName("http://www.foo.com", "bar","foo"),
                         XQItemType.XQBASETYPE_ANYTYPE);

  - element(foo:bar, xs:integer) // node name foo:bar, type is xs:integer

  conn.createElementType(new QName("http://www.foo.com", "bar","foo"),
                         XQItemType.XQBASETYPE_INTEGER);
      Parameters:
      nodename - specifies the name of the node. null indicates a wildcard for the node name
      basetype - the base type of the item. One of the XQItemType.XQBASETYPE_* constants
      Returns:
      a new XQItemType representing the XQuery element(nodename, basetype) type
      Throws:
      XQException - if (1) the underlying object implementing the interface is closed

    • createElementType

      XQItemType createElementType(QName nodename, int basetype, QName typename, URI schemaURI, boolean allowNill) throws XQException
      Creates a new XQItemType object representing the XQuery element(nodename,basetype,typename,schemaURI, allowNill) type, given the node name, base type, schema type name, schema URI, and nilled check. The type name can reference either pre-defined schema types or user-defined types.

      Example - 
        XQConnection conn = ..; // An XQuery connection

  - element (person, employee) // element person of type employee

  conn.createElementType(new QName("person"), XQItemType.XQBASETYPE_ANYTYPE,
                         new QName("employee"), null ,false);

  - element(person, employee ? ) // element person of type employee, whose nilled
                                 // property may be true or false.

  conn.createElementType(new QName("person"), XQItemType.XQBASETYPE_ANYTYPE,
                         new QName("employee"), null ,true);

  - element(foo:bar, po:address)
  where the prefix foo refers to the namespace http://www.foo.com and the
  prefix po refers to the namespace "http://www.address.com"

  conn.createElementType(new QName("http://www.foo.com", "bar","foo"),
               XQItemType.XQBASETYPE_ANYTYPE,
               new QName("http://address.com", "address","po"), null, false);

  - element (zip, zipcode) // element zip of type zipchode which derives from
                           // xs:string

  conn.createElementType(new QName("zip"), XQItemType.XQBASETYPE_STRING,
                         new QName("zipcode"), null, false);

  - element (*, xs:anyType ?)

  conn.createElementType(null, XQItemType.XQBASETYPE_ANYTYPE, null, null, true);

  - element(foo:bar, po:hatsize)
  where the prefix foo refers to the namespace http://www.foo.com and the
  prefix po refers to the namespace "http://www.hatsizes.com"
  with schema URI "http://hatschema.com"

  conn.createElementType(new QName("http://www.foo.com", "bar","foo"),
                      XQItemType.XQBASETYPE_INTEGER,
                      new QName("http://www.hatsizes.com", "hatsize","po"),
                      new QName("http://hatschema.com"), false);
      Parameters:
      nodename - specifies the name of the element. null indicates a wildcard for the node name
      basetype - the base type of the item. One of the XQItemType.XQBASETYPE_* constants
      typename - the QName of the type. If the QName refers to a predefinied type, it must match the basetype. Can be null
      schemaURI - the URI to the schema. Can be null. This can only be specified if the typename is also specified
      allowNill - the nilled property of the element
      Returns:
      a new XQItemType representing the XQuery element(nodename,basetype, typename,schemaURI, allowNill) type
      Throws:
      XQException - if (1) schemaURI is specified but the typename is not specified, (2) the underlying object implementing the interface is closed, (3) the implementation does not support user-defined XML schema types, or (4) if the typename refers to a predefinied type and does not match basetype

    • createSchemaElementType

      XQItemType createSchemaElementType(QName nodename, int basetype, URI schemaURI) throws XQException
      Creates a new XQItemType object representing the XQuery schema-element(nodename,basetype,schemaURI) type, given the node name, base type, and the schema URI.

      Example - 
           XQConnection conn = ..; // An XQuery connection

     - schema-element (customer) // schema-element person, found in
                                 // the schema available at http://customerschema.com

     conn.createElementType(new QName("customer"), XQItemType.XQBASETYPE_ANYTYPE,
                         new URI("http://customerschema.com"));
      Parameters:
      nodename - specifies the name of the element
      basetype - the base type of the item. One of the XQItemType.XQBASETYPE_* constants
      schemaURI - the URI to the schema. Can be null
      Returns:
      a new XQItemType representing the XQuery schema-element(nodename,basetype, schemaURI) type
      Throws:
      XQException - if (1) the node name is null, (2) the underlying object implementing the interface is closed, or (3) the implementation does not support user-defined XML schema types

    • createItemType

      XQItemType createItemType() throws XQException
      Creates a new XQItemType object representing the XQuery item type. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_ITEM.

      Example - 
        XQConnection conn = ..; // An XQuery connection
  XQItemType typ = conn.createItemType(); // represents the XQuery item type "item()"
      Returns:
      a new XQItemType representing the XQuery item type
      Throws:
      XQException - if the underlying object implementing the interface is closed

    • createNodeType

      XQItemType createNodeType() throws XQException
      Creates a new XQItemType object representing the XQuery node() type. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_NODE.
      Returns:
      a new XQItemType representing the XQuery node() type
      Throws:
      XQException - if the underlying object implementing the interface is closed

    • createProcessingInstructionType

      XQItemType createProcessingInstructionType(String piTarget) throws XQException
      Creates a new XQItemType object representing the XQuery processing-instruction(piTarget) type. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_PI. A string literal can be passed to match the PITarget of the processing instruction as described in 2.5.4.2 Matching an Item Type and an Item, XQuery 1.0: An XML Query Language.

      Example - 
         XQConnection conn = ..; // An XQuery connection
   XQItemType anypi = conn.createProcessingInstructionType();
   XQItemType foopi = conn.createProcessingInstructionType("foo-format");

   XQExpression expr = conn.createExpression();
   XQSequence result = expr.executeQuery("<?format role="output" ?>");

   result.next();
   boolean pi = result.instanceOf(anypi);  // will be true
   pi = result.instanceOf(foopi);  // will be false

   XQExpression expr = conn.createExpression();
   XQSequence result = expr.executeQuery("<?foo-format role="output" ?>");

   result.next();
   boolean pi = result.instanceOf(anypi);  // will be true
   pi = result.instanceOf(foopi);  // will be true
      Parameters:
      piTarget - the string literal to match the processing instruction's PITarget. A null string value will match all processing instruction nodes
      Returns:
      a new XQItemType representing the XQuery processing-instruction(piTarget) type
      Throws:
      XQException - if the underlying object implementing the interface is closed

    • createSequenceType

      XQSequenceType createSequenceType(XQItemType item, int occurence) throws XQException
      Creates a new sequence type from an item type and occurence indicator.
      Parameters:
      item - the item type. This parameter must be null if the occurance is XQSequenceType.OCC_EMPTY, and cannot be null for any other occurance indicator
      occurence - The occurence of the item type, must be one of XQSequenceType.OCC_ZERO_OR_ONE, XQSequenceType.OCC_EXACTLY_ONE, XQSequenceType.OCC_ZERO_OR_MORE, XQSequenceType.OCC_ONE_OR_MORE, XQSequenceType.OCC_EMPTY
      Returns:
      a new XQSequenceType representing the type of a sequence
      Throws:
      XQException - if (1) the item is null and the occurance is not XQSequenceType.OCC_EMPTY, (2) the item is not null and the occurance is XQSequenceType.OCC_EMPTY, (3) the occurence is not one of: XQSequenceType.OCC_ZERO_OR_ONE, XQSequenceType.OCC_EXACTLY_ONE, XQSequenceType.OCC_ZERO_OR_MORE, XQSequenceType.OCC_ONE_OR_MORE, XQSequenceType.OCC_EMPTY or (4) the underlying object implementing the interface is closed

    • createTextType

      XQItemType createTextType() throws XQException
      Creates a new XQItemType object representing the XQuery text() type. The XQItemType object will have the item kind set to XQItemType.XQITEMKIND_TEXT.
      Returns:
      a new XQItemType representing the XQuery text() type
      Throws:
      XQException - if the underlying object implementing the interface is closed