org.apache.struts.taglib.logic
public class MessagesPresentTag extends ConditionalTagBase
true
if an ActionMessages
class or a
class that can be converted to an ActionMessages
class is in
request scope under the specified key and there is at least one message in the
class or for the property specified.Modifier and Type | Field and Description |
---|---|
protected java.lang.String |
message
If this is set to 'true', then the
Globals.MESSAGE_KEY will
be used to retrieve the messages from scope. |
Constructor and Description |
---|
MessagesPresentTag() |
Modifier and Type | Method and Description |
---|---|
protected boolean |
condition()
Evaluate the condition that is being tested by this particular tag,
and return
true if the nested body content of this tag
should be evaluated, or false if it should be skipped. |
protected boolean |
condition(boolean desired)
Evaluate the condition that is being tested by this particular tag,
and return
true if there is at least one message in the
class or for the property specified. |
java.lang.String |
getMessage() |
void |
release()
Release all allocated resources.
|
void |
setMessage(java.lang.String message) |
doEndTag, doStartTag, getCookie, getHeader, getName, getParameter, getProperty, getRole, getScope, getUser, setCookie, setHeader, setName, setParameter, setProperty, setRole, setScope, setUser
protected java.lang.String message
Globals.MESSAGE_KEY
will
be used to retrieve the messages from scope.public java.lang.String getMessage()
public void setMessage(java.lang.String message)
protected boolean condition() throws javax.servlet.jsp.JspException
true
if the nested body content of this tag
should be evaluated, or false
if it should be skipped.
This method must be implemented by concrete subclasses.condition
in class ConditionalTagBase
javax.servlet.jsp.JspException
- if a JSP exception occursprotected boolean condition(boolean desired) throws javax.servlet.jsp.JspException
true
if there is at least one message in the
class or for the property specified.
This method must be implemented by concrete subclasses.desired
- Desired outcome for a true resultjavax.servlet.jsp.JspException
- if a JSP exception occurspublic void release()
release
in interface javax.servlet.jsp.tagext.Tag
release
in class ConditionalTagBase
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