public class SubsetIteratorTag extends StrutsBodyTagSupport
A tag that takes an iterator and outputs a subset of it. It delegates to
SubsetIteratorFilter
internally to
perform the subset functionality.
public class MySubsetTagAction extends ActionSupport { public String execute() throws Exception { l = new ArrayList(); l.add(new Integer(1)); l.add(new Integer(2)); l.add(new Integer(3)); l.add(new Integer(4)); l.add(new Integer(5)); return "done"; } public Integer[] getMyArray() { return a; } public List getMyList() { return l; } public Decider getMyDecider() { return new Decider() { public boolean decide(Object element) throws Exception { int i = ((Integer)element).intValue(); return (((i % 2) == 0)?true:false); } }; } }
<!-- s: List basic --> <s:subset source="myList"> <s:iterator> <s:property /> </s:iterator> </s:subset>
<!-- B: List with count --> <s:subset source="myList" count="3"> <s:iterator> <s:property /> </s:iterator> </s:subset>
<!-- C: List with start --> <s:subset source="myList" count="13" start="3"> <s:iterator> <s:property /> </s:iterator> </s:subset>
<!-- D: List with var --> <s:subset var="mySubset" source="myList" count="13" start="3" /> <% Iterator i = (Iterator) pageContext.getAttribute("mySubset"); while(i.hasNext()) { %> <%=i.next() %> <% } %>
<!-- D: List with Decider --> <s:subset source="myList" decider="myDecider"> <s:iterator> <s:property /> </s:iterator> </s:subset>@s.tag name="subset" tld-body-content="JSP" description="Takes an iterator and outputs a subset of it"
Constructor and Description |
---|
SubsetIteratorTag() |
Modifier and Type | Method and Description |
---|---|
int |
doEndTag() |
int |
doStartTag() |
void |
setCount(String count) |
void |
setDecider(String decider) |
void |
setSource(String source) |
void |
setStart(String start)
@s.tagattribute required="false" type="Integer"
description="Indicate the starting index (eg.
|
void |
setVar(String var) |
findString, findValue, findValue, getBody, getStack, toString
doAfterBody, doInitBody, getBodyContent, getPreviousOut, release, setBodyContent
findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue
public void setCount(String count)
public void setSource(String source)
public void setStart(String start)
start
- startpublic void setDecider(String decider)
public void setVar(String var)
public int doStartTag() throws javax.servlet.jsp.JspException
doStartTag
in interface javax.servlet.jsp.tagext.Tag
doStartTag
in class javax.servlet.jsp.tagext.BodyTagSupport
javax.servlet.jsp.JspException
public int doEndTag() throws javax.servlet.jsp.JspException
doEndTag
in interface javax.servlet.jsp.tagext.Tag
doEndTag
in class javax.servlet.jsp.tagext.BodyTagSupport
javax.servlet.jsp.JspException
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