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1
10
11 package org.mmbase.bridge.jsp.taglib.util;
12
13 import java.util.HashSet  ;
14 import java.util.Set ;
15
16 import javax.servlet.jsp.JspTagException ;
17 import javax.servlet.jsp.PageContext ;
18
19 import org.mmbase.bridge.jsp.taglib.ContextProvider;
20
21 import org.mmbase.util.logging.Logger;
22 import org.mmbase.util.logging.Logging;
23
24
32 public class ContextCollector extends StandaloneContextContainer {
33 private static final Logger log = Logging.getLoggerInstance(ContextCollector.class);
34
35 private Set parentCheckedKeys = new HashSet ();
36
37 public ContextCollector(ContextProvider p) throws JspTagException {
38 super(p.getPageContext(), "CONTEXT-COLLECTOR " + (p.getId() == null ? "" : "-" + p.getId()), p.getContextContainer());
39 backing = new BasicBacking(p.getPageContext(), parent instanceof PageContextContainer) {
40 public Object put(Object key, Object value) {
41 if (parentCheckedKeys.contains(key)) {
42 parent.put(key, value);
43 } else {
44 parentCheckedKeys.add(key);
45 try {
46 parent.register((String ) key, value);
47 } catch (JspTagException jte) {
48 throw new RuntimeException (jte);
49 }
50 }
51 return super.put(key, value);
52 }
53 };
54 }
55
56
57 public void unRegister(String key) throws JspTagException {
58 super.unRegister(key);
59 parent.unRegister(key);
60
61 }
62 protected void register(String newid, Object n, boolean check, boolean checkParent) throws JspTagException {
63 if (! check) {
64 parent.unRegister(newid);
65 }
66 super.register(newid, n, check, checkParent);
67
68 }
69
70
73 public ContextContainer getContextContainer() {
74 return this;
75 }
76
77
78
79 public void doAfterBody() throws JspTagException {
80 clear();
81 }
82
83 public void release(PageContext pc, ContextContainer p) {
84 parentCheckedKeys.clear();
85 super.release(pc, p);
86 }
87
88 }
89 |
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