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package org.kuali.student.common.test.spring; |
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import java.util.ArrayList; |
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import java.util.List; |
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import net.sf.ehcache.CacheManager; |
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import net.sf.ehcache.Element; |
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import net.sf.ehcache.ObjectExistsException; |
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import org.aopalliance.aop.Advice; |
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import org.apache.log4j.Logger; |
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import org.aspectj.lang.ProceedingJoinPoint; |
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public class IdToObjectEhcacheAdvice implements Advice { |
30 | 4 | final Logger LOG = Logger.getLogger(IdToObjectEhcacheAdvice.class); |
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private CacheManager cacheManager; |
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private String cacheName; |
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public IdToObjectEhcacheAdvice() { |
39 | 3 | super(); |
40 | 3 | } |
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public IdToObjectEhcacheAdvice(String cacheName) { |
46 | 1 | super(); |
47 | 1 | this.cacheName = cacheName; |
48 | 1 | } |
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public Object invalidateCache(ProceedingJoinPoint pjp) throws Throwable { |
51 | 2 | if (cacheManager == null) { |
52 | 0 | cacheManager = CacheManager.getInstance(); |
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try { |
54 | 0 | cacheManager.addCache(cacheName); |
55 | 0 | } catch (ObjectExistsException e) { |
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57 | 0 | } |
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} |
59 | 2 | LOG.info("Invalidating Cache"); |
60 | 2 | cacheManager.getCache(cacheName).remove(pjp.getArgs()[0]); |
61 | 2 | return pjp.proceed(); |
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} |
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@SuppressWarnings("unchecked") |
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public Object getFromCache(ProceedingJoinPoint pjp) throws Throwable { |
66 | 7 | if (cacheManager == null) { |
67 | 3 | cacheManager = CacheManager.getInstance(); |
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try { |
69 | 3 | cacheManager.addCache(cacheName); |
70 | 1 | } catch (ObjectExistsException e) { |
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72 | 2 | } |
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} |
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76 | 7 | if (pjp.getArgs().length == 1 && pjp.getArgs()[0] instanceof List) { |
77 | 0 | List<Object> results = new ArrayList<Object>(); |
78 | 0 | List<String> uncachedIdList = new ArrayList<String>(); |
79 | 0 | for (String id : (List<String>) pjp.getArgs()[0]) { |
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81 | 0 | LOG.info("Looking in Cache"); |
82 | 0 | Element cachedResult = cacheManager.getCache(cacheName).get(id); |
83 | 0 | if (cachedResult == null) { |
84 | 0 | uncachedIdList.add(id); |
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} else { |
86 | 0 | results.add(cachedResult.getValue()); |
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} |
88 | 0 | } |
89 | 0 | if (uncachedIdList.size() > 0) { |
90 | 0 | List<Idable> uncachedResults = (List<Idable>) pjp.proceed(); |
91 | 0 | if (uncachedResults != null) { |
92 | 0 | for (Idable uncachedResult : uncachedResults) { |
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94 | 0 | LOG.info("Storing to Cache"); |
95 | 0 | results.add(uncachedResult); |
96 | 0 | cacheManager.getCache(cacheName).put( |
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new Element(uncachedResult.getId(), |
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uncachedResult)); |
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} |
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} |
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} |
102 | 0 | return results; |
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} |
104 | 7 | if (pjp.getArgs().length == 1 && pjp.getArgs()[0] instanceof String) { |
105 | 7 | String id = (String) pjp.getArgs()[0]; |
106 | 7 | LOG.info("Looking in Cache"); |
107 | 7 | Element resultElement = cacheManager.getCache(cacheName).get(id); |
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Object result; |
109 | 7 | if (resultElement == null) { |
110 | 6 | result = pjp.proceed(); |
111 | 6 | LOG.info("Storing to Cache"); |
112 | 6 | cacheManager.getCache(cacheName).put(new Element(id, result)); |
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} else { |
114 | 1 | result = resultElement.getValue(); |
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} |
116 | 7 | return result; |
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} |
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119 | 0 | return pjp.proceed(); |
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} |
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public String getCacheName() { |
126 | 0 | return cacheName; |
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} |
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public void setCacheName(String cacheName) { |
134 | 3 | this.cacheName = cacheName; |
135 | 3 | } |
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} |