1 /* 2 * $Id: IterateTei.java 471754 2006-11-06 14:55:09Z husted $ 3 * 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 package org.apache.struts.taglib.logic; 22 23 import javax.servlet.jsp.tagext.TagData; 24 import javax.servlet.jsp.tagext.TagExtraInfo; 25 import javax.servlet.jsp.tagext.VariableInfo; 26 27 /** 28 * Implementation of <code>TagExtraInfo</code> for the <b>iterate</b> tag, 29 * identifying the scripting object(s) to be made visible. 30 * 31 * @version $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004) 32 * $ 33 */ 34 public class IterateTei extends TagExtraInfo { 35 /** 36 * Return information about the scripting variables to be created. 37 */ 38 public VariableInfo[] getVariableInfo(TagData data) { 39 // prime this array with the maximum potential variables. 40 // will be arraycopy'd out to the final array based on results. 41 VariableInfo[] variables = new VariableInfo[2]; 42 43 // counter for matched results. 44 int counter = 0; 45 46 /* id : object of the current iteration */ 47 String id = data.getAttributeString("id"); 48 String type = data.getAttributeString("type"); 49 50 if (id != null) { 51 if (type == null) { 52 type = "java.lang.Object"; 53 } 54 55 variables[counter++] = 56 new VariableInfo(data.getAttributeString("id"), type, true, 57 VariableInfo.NESTED); 58 } 59 60 /* indexId : number value of the current iteration */ 61 String indexId = data.getAttributeString("indexId"); 62 63 if (indexId != null) { 64 variables[counter++] = 65 new VariableInfo(indexId, "java.lang.Integer", true, 66 VariableInfo.NESTED); 67 } 68 69 /* create returning array, and copy results */ 70 VariableInfo[] result; 71 72 if (counter > 0) { 73 result = new VariableInfo[counter]; 74 System.arraycopy(variables, 0, result, 0, counter); 75 } else { 76 result = new VariableInfo[0]; 77 } 78 79 return result; 80 } 81 }