public class OptGroupTag extends ComponentTagSupport
Modifier and Type | Field and Description |
---|---|
protected String |
disabled |
protected String |
label |
protected String |
list |
protected String |
listCssClass |
protected String |
listCssStyle |
protected String |
listKey |
protected String |
listTitle |
protected String |
listValue |
component
Constructor and Description |
---|
OptGroupTag() |
Modifier and Type | Method and Description |
---|---|
protected void |
clearTagStateForTagPoolingServers()
Provide a mechanism to clear tag state, to handle servlet container JSP tag pooling
behaviour with some servers, such as Glassfish.
|
Component |
getBean(ValueStack stack,
javax.servlet.http.HttpServletRequest req,
javax.servlet.http.HttpServletResponse res) |
protected void |
populateParams()
Define method to populate component state based on the Tag parameters.
|
void |
setDisabled(String disabled) |
void |
setLabel(String label) |
void |
setList(String list) |
void |
setListCssClass(String listCssClass) |
void |
setListCssStyle(String listCssStyle) |
void |
setListKey(String listKey) |
void |
setListTitle(String listTitle) |
void |
setListValue(String listValue) |
void |
setPerformClearTagStateForTagPoolingServers(boolean performClearTagStateForTagPoolingServers)
Request that the tag state be cleared during
StrutsBodyTagSupport.doEndTag() processing,
which may help with certain edge cases with tag logic running on servers that implement JSP Tag Pooling. |
doEndTag, doStartTag, getComponent, populatePerformClearTagStateForTagPoolingServersParam
findString, findValue, findValue, getBody, getPerformClearTagStateForTagPoolingServers, getStack, release, toString
doAfterBody, doInitBody, getBodyContent, getPreviousOut, setBodyContent
findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue
protected String list
protected String label
protected String disabled
protected String listKey
protected String listValue
protected String listCssClass
protected String listCssStyle
protected String listTitle
public Component getBean(ValueStack stack, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res)
getBean
in class ComponentTagSupport
protected void populateParams()
ComponentTagSupport
Descendants should override this method for custom behaviour, but should always call the ancestor method when doing so.
populateParams
in class ComponentTagSupport
public void setList(String list)
public void setLabel(String label)
public void setDisabled(String disabled)
public void setListKey(String listKey)
public void setListValue(String listValue)
public void setListCssClass(String listCssClass)
public void setListCssStyle(String listCssStyle)
public void setListTitle(String listTitle)
public void setPerformClearTagStateForTagPoolingServers(boolean performClearTagStateForTagPoolingServers)
StrutsBodyTagSupport
StrutsBodyTagSupport.doEndTag()
processing,
which may help with certain edge cases with tag logic running on servers that implement JSP Tag Pooling.
Note: Even though the Tag classes extend this class StrutsBodyTagSupport
, and this method
StrutsBodyTagSupport.setPerformClearTagStateForTagPoolingServers(boolean)
exists in the method hierarchy,
the JSP processing requires us to explicitly override it in every Tag class in order for the Tag handler
method to be visible to the JSP processing.
Defining a setter in the superclass alone is insufficient (results in "Cannot find a setter method for the attribute").
See StrutsBodyTagSupport.clearTagStateForTagPoolingServers()
for additional details.
Warning: Setting this value to true may allow for the desired behaviour, but doing so
may violate the JSP specification. Set to true at your own risk.
setPerformClearTagStateForTagPoolingServers
in class StrutsBodyTagSupport
performClearTagStateForTagPoolingServers
- true if tag state should be cleared, false otherwise.protected void clearTagStateForTagPoolingServers()
StrutsBodyTagSupport
Usage: Override this method in descendant classes to clear any state that might cause issues should the
servlet container re-use a cached instance of the tag object. If the descendant class does not
declare any new field members then it should not be strictly necessary to call this method there.
Typically that means calling the ancestor's ComponentTagSupport.clearTagStateForTagPoolingServers()
method first, then resetting instance variables at the current level to their default state.
Note: If the descendant overrides StrutsBodyTagSupport.doEndTag()
, and does not call
super.doEndTag(), then the descendant should call this method in the descendant doEndTag() method
to ensure consistent clearing of tag state.
clearTagStateForTagPoolingServers
in class ComponentTagSupport
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