Examples of SubsetIteratorTag

org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

NOTE: JSP-TAG

A tag that takes an iterator and outputs a subset of it. It delegates to {@link org.apache.struts2.util.SubsetIteratorFilter} internally toperform the subset functionality.

count (Object) - Indicate the number of entries to be in the resulting subset iterator
source* (Object) - Indicate the source of which the resulting subset iterator is to be derived base on
start (Object) - Indicate the starting index (eg. first entry is 0) of entries in the source to be available as the first entry in the resulting subset iterator
decider (Object) - Extension to plug-in a decider to determine if that particular entry is to be included in the resulting subset iterator
var (String) - Indicate the pageContext attribute name to store the resultant subset iterator in

  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"

Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

public class SubsetIteratorTagTest extends AbstractTagTest {
  


  public void testBasic() throws Exception {
    { // List as Source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
    
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
    
      assertEquals(subsetIterator.next(), new Integer(1));
      assertEquals(subsetIterator.next(), new Integer(2));
      assertEquals(subsetIterator.next(), new Integer(3));
      assertEquals(subsetIterator.next(), new Integer(4));
      assertEquals(subsetIterator.next(), new Integer(5));
    }
    
    { // Array as Source 
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myArray");
    
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(1));
      assertEquals(subsetIterator.next(), new Integer(2));
      assertEquals(subsetIterator.next(), new Integer(3));
      assertEquals(subsetIterator.next(), new Integer(4));

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

    }
  }
  
  public void testWithStartAttribute() throws Exception {
    { // List as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
      tag.setStart("3");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(4));
      assertEquals(subsetIterator.next(), new Integer(5));
    }
    
    { // Array as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myArray");
      tag.setStart("3");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(4));
      assertEquals(subsetIterator.next(), new Integer(5));
    }
  }

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

    }
  }
  
  public void testWithCountAttribute() throws Exception {
    { // List as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
      tag.setCount("3");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(1));
      assertEquals(subsetIterator.next(), new Integer(2));
      assertEquals(subsetIterator.next(), new Integer(3));
    }
    
    { // array as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myArray");
      tag.setCount("3");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(1));
      assertEquals(subsetIterator.next(), new Integer(2));
      assertEquals(subsetIterator.next(), new Integer(3));
    }

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

    }
  }
  
  public void testWIthStartAndCountAttribute() throws Exception {
    { // List as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
      tag.setStart("3");
      tag.setCount("3");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer("4"));
      assertEquals(subsetIterator.next(), new Integer("5"));
    }
    
    {  // Array as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myArray");
      tag.setStart("3");
      tag.setCount("3");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer("4"));
      assertEquals(subsetIterator.next(), new Integer("5"));
    }
  }

View Full Code Here

Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

    }
  }
  
  public void testWithId() throws Exception {
    {  // List as Source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
      tag.setId("myPageContextId1");
      
      tag.doStartTag();
      Iterator subsetIterator1 = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      Iterator subsetIterator2 = (Iterator) pageContext.getAttribute("myPageContextId1");
      
      assertNotNull(subsetIterator1);
      assertNotNull(subsetIterator2);
      assertEquals(subsetIterator1, subsetIterator2);
      assertEquals(subsetIterator2.next(), new Integer(1));
      assertEquals(subsetIterator2.next(), new Integer(2));
      assertEquals(subsetIterator2.next(), new Integer(3));
      assertEquals(subsetIterator2.next(), new Integer(4));
      assertEquals(subsetIterator2.next(), new Integer(5));
    }
    
    {  // Array as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myArray");
      tag.setId("myPageContextId2");
      
      tag.doStartTag();
      Iterator subsetIterator1 = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      Iterator subsetIterator2 = (Iterator) pageContext.getAttribute("myPageContextId2");
      
      assertNotNull(subsetIterator1);
      assertNotNull(subsetIterator2);

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

    }
  }
  
  public void testWithDecider() throws Exception {
    {  // List as source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
      tag.setDecider("myDecider");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(2));
      assertEquals(subsetIterator.next(), new Integer(4));
    }
    
    {  // Array As source
      SubsetIteratorTag tag = new SubsetIteratorTag();
      tag.setPageContext(pageContext);
      tag.setSource("myList");
      tag.setDecider("myDecider");
      
      tag.doStartTag();
      Iterator subsetIterator = (Iterator) stack.findValue("top");
      tag.doEndTag();
      
      assertEquals(subsetIterator.next(), new Integer(2));
      assertEquals(subsetIterator.next(), new Integer(4));
    }
  }

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

public class SubsetIteratorTagTest extends AbstractTagTest {




    public void testBasic() throws Exception {
        { // List as Source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }


        { // Array as Source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
            assertEquals(subsetIterator.next(), new Integer(4));

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

        }
    }


    public void testWithStartAttribute() throws Exception {
        { // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setStart("3");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }


        { // Array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setStart("3");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }
    }

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

        }
    }


    public void testWithCountAttribute() throws Exception {
        { // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setCount("3");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
        }


        { // array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setCount("3");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
        }

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Examples of org.apache.struts2.views.jsp.iterator.SubsetIteratorTag

        }
    }


    public void testWIthStartAndCountAttribute() throws Exception {
        { // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setStart("3");
            tag.setCount("3");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer("4"));
            assertEquals(subsetIterator.next(), new Integer("5"));
        }


        {   // Array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setStart("3");
            tag.setCount("3");


            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();


            assertEquals(subsetIterator.next(), new Integer("4"));
            assertEquals(subsetIterator.next(), new Integer("5"));
        }
    }

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