Class Node.JspAttribute

java.lang.Object
org.apache.jasper.compiler.Node.JspAttribute
Enclosing class:
Node
public static class Node.JspAttribute extends Object
Represents attributes that can be request time expressions. Can either be a plain attribute, an attribute that represents a request time expression value, or a named attribute (specified using the jsp:attribute standard action).

  • Method Details

    • validateEL

      public void validateEL(ExpressionFactory ef, ELContext ctx) throws ELException
      Allow node to validate itself.
      Parameters:
      ef - The expression factory to use to evaluate any EL
      ctx - The context to use to evaluate any EL
      Throws:
      ELException - If validation fails

    • getName

      public String getName()
      Returns the name of the attribute.
      Returns:
      The name of the attribute

    • getLocalName

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

    • getURI

      public String getURI()
      Returns the namespace of the attribute.
      Returns:
      The namespace of the attribute, or null if in the default namespace

    • getTagAttributeInfo

      public TagAttributeInfo getTagAttributeInfo()
      Returns the TagAttributeInfo for this attribute.
      Returns:
      The TagAttributeInfo, or null if not available

    • isDeferredInput

      public boolean isDeferredInput()
      Returns whether this is a deferred value expression input.
      Returns:
      true if there's TagAttributeInfo meaning we need to assign a ValueExpression

    • isDeferredMethodInput

      public boolean isDeferredMethodInput()
      Returns whether this is a deferred method expression input.
      Returns:
      true if there's TagAttributeInfo meaning we need to assign a MethodExpression

    • getExpectedTypeName

      public String getExpectedTypeName()
      Returns the expected type name for this attribute.
      Returns:
      The expected type name, or "java.lang.Object" as default

    • getParameterTypeNames

      public String[] getParameterTypeNames()
      Returns the parameter type names for a deferred method expression.
      Returns:
      Array of parameter type names, or empty array if not applicable

    • getValue

      public String getValue()
      Returns the value for the attribute. Only makes sense if namedAttribute is false.
      Returns:
      The value for the attribute, or the expression string (stripped of "<%=", "%>", "%=", or "%" but containing "${" and "}" for EL expressions)

    • getNamedAttributeNode

      public Node.NamedAttribute getNamedAttributeNode()
      Returns the named attribute node. Only makes sense if namedAttribute is true.
      Returns:
      The nodes that evaluate to the body of this attribute

    • isExpression

      public boolean isExpression()
      Returns whether the value represents a traditional rtexprvalue.
      Returns:
      true if the value represents a traditional rtexprvalue

    • isNamedAttribute

      public boolean isNamedAttribute()
      Returns whether the value represents a NamedAttribute value.
      Returns:
      true if the value represents a NamedAttribute value

    • isELInterpreterInput

      public boolean isELInterpreterInput()
      Returns whether the value represents an expression that should be fed to the expression interpreter.
      Returns:
      true if the value should be fed to the expression interpreter; false for string literals or rtexprvalues that should not be interpreted or reevaluated

    • isLiteral

      public boolean isLiteral()
      Returns whether the value is a string literal known at translation time.
      Returns:
      true if the value is a string literal known at translation time

    • isDynamic

      public boolean isDynamic()
      Returns whether the attribute is a "dynamic" attribute of a custom tag that implements DynamicAttributes interface.
      Returns:
      true if the attribute is a "dynamic" attribute of a custom tag that implements DynamicAttributes interface. That is, a random extra attribute that is not declared by the tag

    • getEL

      public ELNode.Nodes getEL()
      Returns the EL expression nodes for this attribute.
      Returns:
      The EL nodes, or null if not an EL expression