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1
10 package org.mmbase.bridge.jsp.taglib.pageflow;
11
12 import org.mmbase.bridge.jsp.taglib.util.Attribute;
13 import org.mmbase.bridge.jsp.taglib.Condition;
14 import org.mmbase.bridge.jsp.taglib.WriterReferrer;
15
16 import org.mmbase.bridge.Node;
17 import org.mmbase.util.Casting;
18 import javax.servlet.jsp.JspTagException  ;
19
20 import org.mmbase.util.logging.Logger;
21 import org.mmbase.util.logging.Logging;
22
23 import java.util.*;
24 import java.util.regex.Pattern ;
25 import java.math.BigDecimal ;
26
27
34
35 public class CompareTag extends PresentTag implements Condition, WriterReferrer {
36
37 protected static final Logger log = Logging.getLoggerInstance(CompareTag.class);
38
39 private Attribute value = Attribute.NULL;
40 private Attribute valueSet = Attribute.NULL;
41 private Attribute regexp = Attribute.NULL;
42 public void setValue(String v) throws JspTagException {
43 value = getAttribute(v);
44 }
45
46 public void setValueset(String vs) throws JspTagException {
47 valueSet = getAttribute(vs);
48 }
49 public void setRegexp(String r) throws JspTagException {
50 regexp = getAttribute(r);
51 }
52
53 private Attribute referid2 = Attribute.NULL;
54 public void setReferid2(String r) throws JspTagException {
55 referid2 = getAttribute(r);
56 }
57
58 protected boolean doCompare(Comparable v1, Comparable v2) {
59 if (log.isDebugEnabled()) {
60 log.debug("comparing " + (v1 != null ? v1.getClass().getName() : "") + "'" + v1 + "' to " + (v2 != null ? v2.getClass().getName() : "")+ "'" + v2 + "'");
61 }
62
63 try {
65 return v1.compareTo(v2) == 0; } catch (Throwable e) {
67 return false;
69 }
70 }
71
72 protected Object getCompare2() throws JspTagException {
73 if (referid2 == Attribute.NULL) {
74 throw new JspTagException ("Attribute 'value' or 'referid2' must be indicated");
75 }
76 Object o = getObject(referid2.getString(this));
77 if (o instanceof Node) {
78 return "" + ((Node)o).getNumber();
79 } else {
80 return o;
81 }
82
83 }
84
85
86 public int doStartTag() throws JspTagException {
87 Object compare1;
88
89 if (getReferid() == null) {
91 compare1 = findWriter().getWriterValue();
92 if (compare1 == null) compare1 = "";
93 } else {
94 compare1 = getObject(getReferid());
95 }
96 if (compare1 instanceof Boolean ) {
97 compare1 = compare1.toString();
98 } else if (compare1 instanceof Date) {
99 compare1 = Casting.toInteger(compare1);
100 } else if (compare1 instanceof List) {
101 compare1 = Casting.toString(compare1);
102 } else if (compare1 instanceof Node) {
103 compare1 = Casting.toString(compare1);
104 } else if (compare1 instanceof byte[]) {
105 compare1 = Casting.toString(compare1);
106 } else if (compare1 instanceof org.apache.commons.fileupload.FileItem) {
107 compare1 = Casting.toString(compare1);
108 }
109
110 if (! (compare1 instanceof Comparable )) {
111 throw new JspTagException ("Cannot compare variable '" + getReferid() + "' of type " + compare1.getClass().getName());
112 }
113
114 boolean result = false;
115 if (regexp != Attribute.NULL) {
116 if (value != Attribute.NULL || valueSet != Attribute.NULL) {
117 throw new JspTagException ("Cannot use 'regexp' attribute in combination with 'value' or 'valueSet' attributes");
118 }
119 Pattern pattern = Pattern.compile (regexp.getString(this));
120 result = pattern.matcher("" + compare1).matches();
121 } else {
122 Set compareToSet = new HashSet();
124 if (value != Attribute.NULL) {
125 if (valueSet != Attribute.NULL) {
126 throw new JspTagException ("Can specify both 'value' and 'valueset' attributes");
127 }
128 if (referid2 != Attribute.NULL) {
129 throw new JspTagException ("Cannot indicate 'referid2' and 'value' attributes both");
130 }
131 compareToSet.add(value.getValue(this));
132 } else if (valueSet != Attribute.NULL) {
133 if (referid2 != Attribute.NULL) {
134 throw new JspTagException ("Cannot indicate 'referid2' and 'valueSet' attributes both");
135 }
136 compareToSet.addAll(valueSet.getList(this));
137 } else {
138 compareToSet.add(getCompare2());
139 }
140
141 Iterator i = compareToSet.iterator();
142
143
144 if (compare1 instanceof Number ) {
145 compare1 = new BigDecimal (compare1.toString());
146 while (i.hasNext()) {
147 Object compare2 = i.next();
148 if (compare2 instanceof Date) {
149 compare2 = Casting.toInteger(compare2);
150 }
151
152 if (compare2 instanceof String ) {
153 if ("".equals(compare2)) { compare2 = new BigDecimal ("0");
155 } else {
156 compare2 = new BigDecimal ((String )compare2);
157 }
158 } else if (compare2 instanceof Number ) {
159 compare2 = new BigDecimal (compare2.toString());
160 } else if (compare2 instanceof Node) {
161 compare2 = new BigDecimal (((Node)compare2).getNumber());
162 }
163
164 if (doCompare((Comparable )compare1, (Comparable )compare2)) {
165 result = true;
166 break;
167
168 }
169
170 }
171 } else {
172 while (i.hasNext()) {
173 Object compare2 = i.next();
174 if (compare2 instanceof Date) {
175 compare2 = Casting.toInteger(compare2);
176 }
177 if (compare2 instanceof Number ) {
178 compare2 = new BigDecimal (compare2.toString());
179 Number compare1n;
180 if ("".equals(compare1)) { compare1n = new BigDecimal ("0");
182 } else {
183 compare1n = new BigDecimal ((String )compare1);
184 }
185 if (doCompare((Comparable )compare1n, (Comparable )compare2)) {
186 result = true;
187 break;
188 }
189 } else { if (! (compare2 instanceof Comparable )) compare2 = Casting.toString(compare2);
191 if (doCompare((Comparable )compare1, (Comparable )compare2)) {
192 result = true;
193 break;
194 }
195 }
196 }
197 }
198 }
199 if (result != getInverse() ) {
200 return EVAL_BODY;
201 } else {
202 return SKIP_BODY;
203 }
204 }
205 }
206 |
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