Class Node

java.lang.Object
org.apache.jasper.compiler.Node
All Implemented Interfaces:
TagConstants
Direct Known Subclasses:
Node.AttributeDirective, Node.AttributeGenerator, Node.ChildInfoBase, Node.Comment, Node.DoBodyAction, Node.ELExpression, Node.FallBackAction, Node.ForwardAction, Node.GetProperty, Node.IncludeAction, Node.IncludeDirective, Node.InvokeAction, Node.JspElement, Node.JspOutput, Node.JspRoot, Node.JspText, Node.PageDirective, Node.ParamAction, Node.ParamsAction, Node.PlugIn, Node.Root, Node.ScriptingElement, Node.SetProperty, Node.TagDirective, Node.TaglibDirective, Node.TemplateText, Node.UninterpretedTag, Node.UseBean, Node.VariableDirective
public abstract class Node extends Object implements TagConstants
An internal data representation of a JSP page or a JSP document (XML). Also included here is a visitor class for traversing nodes.

  • Field Details

    • attrs

      protected Attributes attrs
      The attributes for this node.

    • taglibAttrs

      protected Attributes taglibAttrs
      The xmlns attributes that represent tag libraries (only in XML syntax).

    • nonTaglibXmlnsAttrs

      protected Attributes nonTaglibXmlnsAttrs
      The xmlns attributes that do not represent tag libraries (only in XML syntax).

    • body

      protected Node.Nodes body
      The body of this node.

    • text

      protected String text
      The text content associated with this node.

    • startMark

      protected Mark startMark
      The location in the source file where this node begins.

    • beginJavaLine

      protected int beginJavaLine
      The starting line number in the generated Java code.

    • endJavaLine

      protected int endJavaLine
      The ending line number in the generated Java code.

    • parent

      protected Node parent
      The parent node in the parse tree.

    • namedAttributeNodes

      protected Node.Nodes namedAttributeNodes
      Cached named attribute nodes for performance.

    • qName

      protected String qName
      The qualified name of this node.

    • localName

      protected String localName
      The local name of this node.

    • innerClassName

      protected String innerClassName
      The name of the inner class to which the codes for this node and its body are generated. For instance, for <jsp:body> in foo.jsp, this is "foo_jspHelper". This is primarily used for communicating such info from Generator to Smap generator.

  • Method Details

    • getQName

      public String getQName()
      Returns the qualified name of this node.
      Returns:
      The qualified name

    • getLocalName

      public String getLocalName()
      Returns the local name of this node.
      Returns:
      The local name

    • getAttributes

      public Attributes getAttributes()
      Gets this Node's attributes.

      In the case of a Node parsed from standard syntax, this method returns all the Node's attributes.

      In the case of a Node parsed from XML syntax, this method returns only those attributes whose name does not start with xmlns.

      Returns:
      The attributes

    • getTaglibAttributes

      public Attributes getTaglibAttributes()
      Gets this Node's xmlns attributes that represent tag libraries (only meaningful for Nodes parsed from XML syntax).
      Returns:
      The taglib attributes

    • getNonTaglibXmlnsAttributes

      public Attributes getNonTaglibXmlnsAttributes()
      Gets this Node's xmlns attributes that do not represent tag libraries (only meaningful for Nodes parsed from XML syntax).
      Returns:
      The non-taglib xmlns attributes

    • setAttributes

      public void setAttributes(Attributes attrs)
      Sets the attributes for this node.
      Parameters:
      attrs - The attributes to set

    • getAttributeValue

      public String getAttributeValue(String name)
      Returns the value of the attribute with the given name.
      Parameters:
      name - The name of the attribute
      Returns:
      The attribute value, or null if not found

    • getTextAttribute

      public String getTextAttribute(String name)
      Get the attribute that is non request time expression, either from the attribute of the node, or from a jsp:attribute
      Parameters:
      name - The name of the attribute
      Returns:
      The attribute value

    • getNamedAttributeNode

      public Node.NamedAttribute getNamedAttributeNode(String name)
      Searches all sub-nodes of this node for jsp:attribute standard actions with the given name.

      This should always be called and only be called for nodes that accept dynamic runtime attribute expressions.

      Parameters:
      name - The name of the attribute
      Returns:
      the NamedAttribute node of the matching named attribute, nor null if no such node is found.

    • getNamedAttributeNodes

      public Node.Nodes getNamedAttributeNodes()
      Searches all subnodes of this node for jsp:attribute standard actions, and returns that set of nodes as a Node.Nodes object.
      Returns:
      Possibly empty Node.Nodes object containing any jsp:attribute subnodes of this Node

    • getBody

      public Node.Nodes getBody()
      Returns the body of this node.
      Returns:
      The body nodes

    • setBody

      public void setBody(Node.Nodes body)
      Sets the body of this node.
      Parameters:
      body - The body nodes

    • getText

      public String getText()
      Returns the text content of this node.
      Returns:
      The text content

    • getStart

      public Mark getStart()
      Returns the start mark (location) of this node.
      Returns:
      The start mark

    • getParent

      public Node getParent()
      Returns the parent node.
      Returns:
      The parent node

    • getBeginJavaLine

      public int getBeginJavaLine()
      Returns the starting line number in the generated Java code.
      Returns:
      The starting Java line number

    • setBeginJavaLine

      public void setBeginJavaLine(int begin)
      Sets the starting line number in the generated Java code.
      Parameters:
      begin - The starting Java line number

    • getEndJavaLine

      public int getEndJavaLine()
      Returns the ending line number in the generated Java code.
      Returns:
      The ending Java line number

    • setEndJavaLine

      public void setEndJavaLine(int end)
      Sets the ending line number in the generated Java code.
      Parameters:
      end - The ending Java line number

    • getRoot

      public Node.Root getRoot()
      Returns the root node of the parse tree.
      Returns:
      The root node

    • getInnerClassName

      public String getInnerClassName()
      Returns the name of the inner class for this node.
      Returns:
      The inner class name

    • setInnerClassName

      public void setInnerClassName(String icn)
      Sets the name of the inner class for this node.
      Parameters:
      icn - The inner class name