Package com.aspectran.web.support.util
Class TagUtils
- java.lang.Object
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- com.aspectran.web.support.util.TagUtils
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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 translatingStrings
to web scopes.page
will be transformed toPageContext.PAGE_SCOPE
request
will be transformed toPageContext.REQUEST_SCOPE
session
will be transformed toPageContext.SESSION_SCOPE
application
will be transformed toPageContext.APPLICATION_SCOPE
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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.
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Constructor Summary
Constructors Constructor Description TagUtils()
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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 suppliedTag
has any ancestor tag of the supplied type, throwing anIllegalStateException
if not.static int
getScope(java.lang.String scope)
Determines the scope for a given inputString
.static boolean
hasAncestorOfType(javax.servlet.jsp.tagext.Tag tag, java.lang.Class<?> ancestorTagClass)
Determine whether the suppliedTag
has any ancestor tag of the supplied type.
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Field Detail
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SCOPE_PAGE
public static final java.lang.String SCOPE_PAGE
Constant identifying the page scope.- See Also:
- Constant Field Values
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SCOPE_REQUEST
public static final java.lang.String SCOPE_REQUEST
Constant identifying the request scope.- See Also:
- Constant Field Values
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SCOPE_SESSION
public static final java.lang.String SCOPE_SESSION
Constant identifying the session scope.- See Also:
- Constant Field Values
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SCOPE_APPLICATION
public static final java.lang.String SCOPE_APPLICATION
Constant identifying the application scope.- See Also:
- Constant Field Values
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Method Detail
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getScope
public static int getScope(java.lang.String scope)
Determines the scope for a given inputString
.If the
String
does not match 'request', 'session', 'page' or 'application', the method will returnPageContext.PAGE_SCOPE
.- Parameters:
scope
- theString
to inspect- Returns:
- the scope found, or
PageContext.PAGE_SCOPE
if no scope matched - Throws:
java.lang.IllegalArgumentException
- if the suppliedscope
isnull
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hasAncestorOfType
public static boolean hasAncestorOfType(javax.servlet.jsp.tagext.Tag tag, java.lang.Class<?> ancestorTagClass)
Determine whether the suppliedTag
has any ancestor tag of the supplied type.- Parameters:
tag
- the tag whose ancestors are to be checkedancestorTagClass
- the ancestorClass
being searched for- Returns:
true
if the suppliedTag
has any ancestor tag of the supplied type- Throws:
java.lang.IllegalArgumentException
- if either of the supplied arguments isnull
; or if the suppliedancestorTagClass
is not type-assignable to theTag
class
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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 suppliedTag
has any ancestor tag of the supplied type, throwing anIllegalStateException
if not.- Parameters:
tag
- the tag whose ancestors are to be checkedancestorTagClass
- the ancestorClass
being searched fortagName
- the name of thetag
; for example 'option
'ancestorTagName
- the name of the ancestortag
; for example 'select
'- Throws:
java.lang.IllegalStateException
- if the suppliedtag
does not have a tag of the suppliedparentTagClass
as an ancestorjava.lang.IllegalArgumentException
- if any of the supplied arguments isnull
, or in the case of theString
-typed arguments, is composed wholly of whitespace; or if the suppliedancestorTagClass
is not type-assignable to theTag
class- See Also:
hasAncestorOfType(javax.servlet.jsp.tagext.Tag, Class)
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