Package net.sf.saxon.instruct

Class FixedElement

    • Field Detail

      • namespaceCodes

        protected int[] namespaceCodes

    • Constructor Detail

      • FixedElement

        public FixedElement​(int nameCode,
                    int[] namespaceCodes,
                    boolean inheritNamespaces,
                    SchemaType schemaType,
                    int validation)
        Create an instruction that creates a new element node
        Parameters:
        nameCode - Represents the name of the element node
        namespaceCodes - List of namespaces to be added to the element node. May be null if none are required.
        inheritNamespaces - true if the children of this element are to inherit its namespaces
        schemaType - Type annotation for the new element node
        validation - Validation mode to be applied, for example STRICT, LAX, SKIP

    • Method Detail

      • optimize

        public Expression optimize​(ExpressionVisitor visitor,
                           ItemType contextItemType)
                    throws XPathException
        Description copied from class: Expression
        Perform optimisation of an expression and its subexpressions. This is the third and final phase of static optimization.

        This method is called after all references to functions and variables have been resolved to the declaration of the function or variable, and after all type checking has been done.

        Overrides:
        optimize in class ParentNodeConstructor
        Parameters:
        visitor - an expression visitor
        contextItemType - the static type of "." at the point where this expression is invoked. The parameter is set to null if it is known statically that the context item will be undefined. If the type of the context item is not known statically, the argument is set to Type.ITEM_TYPE
        Returns:
        the original expression, rewritten if appropriate to optimize execution
        Throws:
        XPathException - if an error is discovered during this phase (typically a type error)

      • copy

        public Expression copy()
        Copy an expression. This makes a deep copy.
        Specified by:
        copy in class Expression
        Returns:
        the copy of the original expression

      • getURICode

        public short getURICode​(NamePool pool)
        Get the URI code representing the namespace URI of the element being constructed
        Parameters:
        pool - the NamePool
        Returns:
        the URI code

      • getItemType

        public ItemType getItemType​(TypeHierarchy th)
        Get the type of the item returned by this instruction
        Overrides:
        getItemType in class ElementCreator
        Parameters:
        th - The type hierarchy cache
        Returns:
        the item type

      • getNameCode

        public int getNameCode​(XPathContext context)
        Callback from the superclass ElementCreator to get the nameCode for the element name
        Specified by:
        getNameCode in class ElementCreator
        Parameters:
        context - The evaluation context (not used)
        Returns:
        the name code for the element name

      • getNewBaseURI

        public java.lang.String getNewBaseURI​(XPathContext context)
        Description copied from class: ElementCreator
        Get the base URI for the element being constructed
        Specified by:
        getNewBaseURI in class ElementCreator
        Parameters:
        context - the XPath dynamic evaluation context
        Returns:
        the base URI of the constructed element

      • checkPermittedContents

        public void checkPermittedContents​(SchemaType parentType,
                                   StaticContext env,
                                   boolean whole)
                            throws XPathException
        Check that any elements and attributes constructed or returned by this expression are acceptable in the content model of a given complex type. It's always OK to say yes, since the check will be repeated at run-time. The process of checking element and attribute constructors against the content model of a complex type also registers the type of content expected of those constructors, so the static validation can continue recursively.
        Overrides:
        checkPermittedContents in class Expression
        Parameters:
        parentType - the "given complex type": the method is checking that the nodes returned by this expression are acceptable members of the content model of this type
        env - the static context
        whole - if true, we want to check that the value of this expression satisfies the content model as a whole; if false we want to check that the value of the expression is acceptable as one part of the content
        Throws:
        XPathException - if the value delivered by this expression cannot be part of the content model of the given type

      • getActiveNamespaces

        public int[] getActiveNamespaces()
        Callback to get a list of the intrinsic namespaces that need to be generated for the element. The result is an array of namespace codes, the codes either occupy the whole array or are terminated by a -1 entry. A result of null is equivalent to a zero-length array.
        Overrides:
        getActiveNamespaces in class ElementCreator
        Returns:
        an array of namespace codes, the codes either occupy the whole array or are terminated by a -1 entry. A result of null is equivalent to a zero-length array.

      • explain

        public void explain​(ExpressionPresenter out)
        Diagnostic print of expression structure. The abstract expression tree is written to the supplied output destination.
        Specified by:
        explain in class Expression
        Parameters:
        out - the expression presenter used to display the structure