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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
40
41 VariableInfo[] variables = new VariableInfo[2];
42
43
44 int counter = 0;
45
46
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
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
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 }