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16 package org.apache.cocoon.caching;
17
18 import org.apache.excalibur.source.Source;
19 import org.apache.cocoon.environment.SourceResolver;
20
21 import java.util.ArrayList  ;
22 import java.util.Iterator ;
23 import java.util.List ;
24
25
26
33 public final class IncludeCacheValidity implements CacheValidity {
34
35 private List sources;
36 private List timeStamps;
37
38 private boolean isNew;
39
40 private SourceResolver resolver;
41
42 public IncludeCacheValidity(SourceResolver resolver) {
43 this.resolver = resolver;
44 sources = new ArrayList ();
45 timeStamps = new ArrayList ();
46 isNew = true;
47 }
48
49 public boolean isNew() {
50 return isNew;
51 }
52
53 public void setIsNew2False() {
54 isNew = false;
55 resolver = null;
56 }
57
58 public void add(String source, long timeStamp) {
59 this.sources.add(source);
60 this.timeStamps.add(new Long (timeStamp));
61 }
62
63 public boolean isValid(CacheValidity validity) {
64 if (validity instanceof IncludeCacheValidity) {
65 SourceResolver otherResolver = ((IncludeCacheValidity) validity).resolver;
66
67 for(Iterator i = sources.iterator(), j = timeStamps.iterator(); i.hasNext();) {
68 String src = ((String )i.next());
69 long timeStamp = ((Long )j.next()).longValue();
70 Source otherSource = null;
71 try {
72 otherSource = otherResolver.resolveURI(src);
73 if(otherSource.getLastModified() != timeStamp ||
74 timeStamp == 0)
75 return false;
76 } catch (Exception e) {
77 return false;
78 } finally {
79 otherResolver.release(otherSource);
80 }
81 }
82 return true;
83 }
84 return false;
85 }
86
87 public String toString() {
88 StringBuffer b = new StringBuffer ("Include Validity[");
89 for(Iterator i = sources.iterator(), j = timeStamps.iterator(); i.hasNext();) {
90 b.append('{');
91 b.append(i.next());
92 b.append(':');
93 b.append(j.next());
94 b.append('}');
95 if(i.hasNext()) b.append(':');
96 }
97 b.append(']');
98 return b.toString();
99 }
100 }
101 |
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