Package net.sf.saxon.style

Class XSLTry

java.lang.Object
net.sf.saxon.tree.linked.NodeImpl
net.sf.saxon.tree.linked.ParentNodeImpl
net.sf.saxon.tree.linked.ElementImpl
net.sf.saxon.style.StyleElement
net.sf.saxon.style.XSLTry
All Implemented Interfaces:
Source, SourceLocator, ActiveSource, GroundedValue, Item, MutableNodeInfo, NamespaceResolver, NodeInfo, Sequence, Location, SteppingNode, SiblingCountingNode, Locator
public class XSLTry extends StyleElement
Handler for xsl:try elements in stylesheet. The xsl:try element contains a sequence constructor or a select expression, which defines the expression to be evaluated, and it may contain one or more xsl:catch elements, which define the value to be returned in the event of dynamic errors.

  • Constructor Details

    • XSLTry

      public XSLTry()

  • Method Details

    • isInstruction

      public boolean isInstruction()
      Determine whether this node is an instruction.
      Overrides:
      isInstruction in class StyleElement
      Returns:
      true - it is an instruction

    • mayContainSequenceConstructor

      protected boolean mayContainSequenceConstructor()
      Determine whether this type of element is allowed to contain a sequence constructor
      Overrides:
      mayContainSequenceConstructor in class StyleElement
      Returns:
      true: yes, it may contain a sequence constructor

    • prepareAttributes

      protected void prepareAttributes()
      Description copied from class: StyleElement
      Set the attribute list for the element. This is called to process the attributes (note the distinction from processAttributes in the superclass). Must be supplied in a subclass
      Specified by:
      prepareAttributes in class StyleElement

    • isPermittedChild

      protected boolean isPermittedChild(StyleElement child)
      Description copied from class: StyleElement
      Check whether a given child is permitted for this element. This method is used when a non-instruction child element such as xsl:sort is encountered in a context where instructions would normally be expected.
      Overrides:
      isPermittedChild in class StyleElement
      Parameters:
      child - the child that may or may not be permitted
      Returns:
      true if the child is permitted.

    • validate

      public void validate(ComponentDeclaration decl) throws XPathException
      Description copied from class: StyleElement
      Check that the stylesheet element is valid. This is called once for each element, after the entire tree has been built. As well as validation, it can perform first-time initialisation. The default implementation does nothing; it is normally overriden in subclasses.
      Overrides:
      validate in class StyleElement
      Parameters:
      decl - the declaration to be validated
      Throws:
      XPathException - if any error is found during validation

    • compile

      public Expression compile(Compilation exec, ComponentDeclaration decl) throws XPathException
      Description copied from class: StyleElement
      Compile the instruction on the stylesheet tree into an executable instruction for use at run-time.
      Overrides:
      compile in class StyleElement
      Parameters:
      exec - the compilation episode
      decl - the containing top-level declaration, for example xsl:function or xsl:template
      Returns:
      either a ComputedExpression, or null. The value null is returned when compiling an instruction that returns a no-op, or when compiling a top-level object such as an xsl:template that compiles into something other than an instruction.
      Throws:
      XPathException - if validation fails

    • addCatchClause

      public void addCatchClause(QNameTest nameTest, Expression catchExpr)