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Struts example source code file (IteratorStatus.java)

This example Struts source code file (IteratorStatus.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Struts tags/keywords

iteratorstatus, iteratorstatus, statusstate, statusstate

The Struts IteratorStatus.java source code

/*
 * $Id: IteratorStatus.java 768855 2009-04-27 02:09:35Z wesw $
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.struts2.views.jsp;


/**
 * The iterator tag can export an IteratorStatus object so that
 * one can get information about the status of the iteration, such as:
 * <ul>
 * <li>index: current iteration index, starts on 0 and increments in one on every iteration
 * <li>count: iterations so far, starts on 1. count is always index + 1
 * <li>first: true if index == 0
 * <li>even: true if (index + 1) % 2 == 0
 * <li>last: true if current iteration is the last iteration 
 * <li>odd: true if (index + 1) % 2 == 1
 * </ul>
 * <p>Example

* <pre> * <s:iterator status="status" value='%{0, 1}'> * Index: <s:property value="%{#status.index}" /> <br /> * Count: <s:property value="%{#status.count}" /> <br /> * </s:iterator> * </pre> * * <p>will print

* <pre> * Index: 0 * Count: 1 * Index: 1 * Count: 2 * </pre> */ public class IteratorStatus { protected StatusState state; public IteratorStatus(StatusState aState) { state = aState; } public int getCount() { return state.index + 1; } public boolean isEven() { return ((state.index + 1) % 2) == 0; } public boolean isFirst() { return state.index == 0; } public int getIndex() { return state.index; } public boolean isLast() { return state.last; } public boolean isOdd() { return ((state.index + 1) % 2) != 0; } public int modulus(int operand) { return (state.index + 1) % operand; } public static class StatusState { boolean last = false; int index = 0; public void setLast(boolean isLast) { last = isLast; } public void next() { index++; } } }

Other Struts examples (source code examples)

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