Package com.aspectran.web.support.util

Class TagUtils

  • public abstract class TagUtils
extends java.lang.Object

    This class is a clone of org.springframework.web.util.TagUtils

    Utility class for tag library related code, exposing functionality such as translating Strings to web scopes.

    • page will be transformed to PageContext.PAGE_SCOPE
    • request will be transformed to PageContext.REQUEST_SCOPE
    • session will be transformed to PageContext.SESSION_SCOPE
    • application will be transformed to PageContext.APPLICATION_SCOPE

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String SCOPE_APPLICATION
      Constant identifying the application scope.
      static java.lang.String SCOPE_PAGE
      Constant identifying the page scope.
      static java.lang.String SCOPE_REQUEST
      Constant identifying the request scope.
      static java.lang.String SCOPE_SESSION
      Constant identifying the session scope.

    • Constructor Summary

      Constructors 
      Constructor Description
      TagUtils()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void assertHasAncestorOfType​(javax.servlet.jsp.tagext.Tag tag, java.lang.Class<?> ancestorTagClass, java.lang.String tagName, java.lang.String ancestorTagName)
      Determine whether the supplied Tag has any ancestor tag of the supplied type, throwing an IllegalStateException if not.
      static int getScope​(java.lang.String scope)
      Determines the scope for a given input String.
      static boolean hasAncestorOfType​(javax.servlet.jsp.tagext.Tag tag, java.lang.Class<?> ancestorTagClass)
      Determine whether the supplied Tag has any ancestor tag of the supplied type.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • SCOPE_PAGE

        public static final java.lang.String SCOPE_PAGE
        Constant identifying the page scope.
        See Also:
        Constant Field Values

      • SCOPE_REQUEST

        public static final java.lang.String SCOPE_REQUEST
        Constant identifying the request scope.
        See Also:
        Constant Field Values

      • SCOPE_SESSION

        public static final java.lang.String SCOPE_SESSION
        Constant identifying the session scope.
        See Also:
        Constant Field Values

      • SCOPE_APPLICATION

        public static final java.lang.String SCOPE_APPLICATION
        Constant identifying the application scope.
        See Also:
        Constant Field Values

    • Constructor Detail

      • TagUtils

        public TagUtils()

    • Method Detail

      • getScope

        public static int getScope​(java.lang.String scope)
        Determines the scope for a given input String.

        If the String does not match 'request', 'session', 'page' or 'application', the method will return PageContext.PAGE_SCOPE.

        Parameters:
        scope - the String to inspect
        Returns:
        the scope found, or PageContext.PAGE_SCOPE if no scope matched
        Throws:
        java.lang.IllegalArgumentException - if the supplied scope is null

      • hasAncestorOfType

        public static boolean hasAncestorOfType​(javax.servlet.jsp.tagext.Tag tag,
                                        java.lang.Class<?> ancestorTagClass)
        Determine whether the supplied Tag has any ancestor tag of the supplied type.
        Parameters:
        tag - the tag whose ancestors are to be checked
        ancestorTagClass - the ancestor Class being searched for
        Returns:
        true if the supplied Tag has any ancestor tag of the supplied type
        Throws:
        java.lang.IllegalArgumentException - if either of the supplied arguments is null; or if the supplied ancestorTagClass is not type-assignable to the Tag class

      • assertHasAncestorOfType

        public static void assertHasAncestorOfType​(javax.servlet.jsp.tagext.Tag tag,
                                           java.lang.Class<?> ancestorTagClass,
                                           java.lang.String tagName,
                                           java.lang.String ancestorTagName)
        Determine whether the supplied Tag has any ancestor tag of the supplied type, throwing an IllegalStateException if not.
        Parameters:
        tag - the tag whose ancestors are to be checked
        ancestorTagClass - the ancestor Class being searched for
        tagName - the name of the tag; for example 'option'
        ancestorTagName - the name of the ancestor tag; for example 'select'
        Throws:
        java.lang.IllegalStateException - if the supplied tag does not have a tag of the supplied parentTagClass as an ancestor
        java.lang.IllegalArgumentException - if any of the supplied arguments is null, or in the case of the String-typed arguments, is composed wholly of whitespace; or if the supplied ancestorTagClass is not type-assignable to the Tag class
        See Also:
        hasAncestorOfType(javax.servlet.jsp.tagext.Tag, Class)