Package net.sf.saxon.expr.instruct

Class ProcessingInstruction

    • Constructor Detail

      • ProcessingInstruction

        public ProcessingInstruction​(Expression name)
        Create an xsl:processing-instruction instruction
        Parameters:
        name - the expression used to compute the name of the generated processing-instruction

    • Method Detail

      • setNameExp

        public void setNameExp​(Expression nameExp)

      • operands

        public java.lang.Iterable<Operand> operands()
        Description copied from class: Expression
        Get the immediate sub-expressions of this expression, with information about the relationship of each expression to its parent expression. Default implementation works off the results of iterateSubExpressions()

        If the expression is a Callable, then it is required that the order of the operands returned by this function is the same as the order of arguments supplied to the corresponding call() method.

        Overrides:
        operands in class SimpleNodeConstructor
        Returns:
        an iterator containing the sub-expressions of this expression

      • getInstructionNameCode

        public int getInstructionNameCode()
        Get the name of this instruction for diagnostic and tracing purposes
        Overrides:
        getInstructionNameCode in class Instruction
        Returns:
        the string "xsl:processing-instruction"

      • getItemType

        public ItemType getItemType()
        Description copied from class: Instruction
        Get the item type of the items returned by evaluating this instruction
        Overrides:
        getItemType in class Instruction
        Returns:
        the static item type of the instruction

      • getCardinality

        public int getCardinality()
        Description copied from class: Expression
        Determine the static cardinality of the expression. This establishes how many items there will be in the result of the expression, at compile time (i.e., without actually evaluating the result.
        Overrides:
        getCardinality in class Expression
        Returns:
        one of the values Cardinality.ONE_OR_MORE, Cardinality.ZERO_OR_MORE, Cardinality.EXACTLY_ONE, Cardinality.ZERO_OR_ONE, Cardinality.EMPTY. This default implementation returns ZERO_OR_MORE (which effectively gives no information).

      • copy

        public Expression copy​(RebindingMap rebindings)
        Copy an expression. This makes a deep copy.
        Specified by:
        copy in class Expression
        Parameters:
        rebindings - variables to be re-bound
        Returns:
        the copy of the original expression

      • getDependencies

        public int getDependencies()
        Description copied from class: Expression
        Determine which aspects of the context the expression depends on. The result is a bitwise-or'ed value composed from constants such as XPathContext.VARIABLES and XPathContext.CURRENT_NODE. The default implementation combines the intrinsic dependencies of this expression with the dependencies of the subexpressions, computed recursively. This is overridden for expressions such as FilterExpression where a subexpression's dependencies are not necessarily inherited by the parent expression.
        Overrides:
        getDependencies in class Expression
        Returns:
        a set of bit-significant flags identifying the dependencies of the expression

      • checkContentXSLT

        public static UnicodeString checkContentXSLT​(UnicodeString data)
        Check the content of the node, and adjust it if necessary, using the XSLT rules
        Parameters:
        data - the supplied content
        Returns:
        the original content, unless adjustments are needed

      • checkContentXQuery

        public static UnicodeString checkContentXQuery​(UnicodeString data)
                                        throws XPathException
        Check the content of the node, and adjust it if necessary, using the XQuery rules
        Parameters:
        data - the supplied content
        Returns:
        the original content, unless adjustments are needed
        Throws:
        XPathException - if the content is invalid

      • evaluateNodeName

        public NodeName evaluateNodeName​(XPathContext context)
                          throws XPathException
        Description copied from class: SimpleNodeConstructor
        Run-time method to compute the name of the node being constructed. This is overridden for nodes that have a name. The default implementation returns -1, which is suitable for unnamed nodes such as comments
        Overrides:
        evaluateNodeName in class SimpleNodeConstructor
        Parameters:
        context - the XPath dynamic evaluation context
        Returns:
        the name pool nameCode identifying the name of the constructed node
        Throws:
        XPathException - if any failure occurs

      • export

        public void export​(ExpressionPresenter out)
            throws XPathException
        Diagnostic print of expression structure. The abstract expression tree is written to the supplied output destination.
        Specified by:
        export in interface ExportAgent
        Specified by:
        export in class Expression
        Parameters:
        out - the expression presenter used to display the structure
        Throws:
        XPathException - if the export fails, for example if an expression is found that won't work in the target environment.