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| package org.apache.tapestry.services.impl; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.LinkedList; |
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| import java.util.List; |
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| import java.util.Map; |
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| import org.apache.tapestry.event.ReportStatusEvent; |
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| import org.apache.tapestry.event.ReportStatusListener; |
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| import org.apache.tapestry.event.ResetEventListener; |
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| import org.apache.tapestry.services.ObjectPool; |
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| public class ObjectPoolImpl implements ObjectPool, ResetEventListener, ReportStatusListener |
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| { |
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| private String _serviceId; |
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| private int _count = 0; |
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| private Map _pool = new HashMap(); |
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| public synchronized Object get(Object key)
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| { |
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| List pooled = (List) _pool.get(key);
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| if (pooled == null || pooled.isEmpty())
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| return null;
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| _count--;
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| return pooled.remove(0);
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| } |
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| public synchronized void store(Object key, Object value)
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| { |
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| List pooled = (List) _pool.get(key);
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| if (pooled == null)
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| { |
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| pooled = new LinkedList();
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| _pool.put(key, pooled);
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| } |
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| pooled.add(value);
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| _count++;
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| } |
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| public synchronized void resetEventDidOccur()
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| { |
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| _pool.clear();
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| _count = 0;
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| } |
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| public synchronized void reportStatus(ReportStatusEvent event)
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| { |
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| event.title(_serviceId);
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| event.property("total count", _count);
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| event.section("Count by Key");
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| Iterator i = _pool.entrySet().iterator();
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| while (i.hasNext())
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| { |
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| Map.Entry entry = (Map.Entry) i.next();
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| String key = entry.getKey().toString();
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| List pooled = (List) entry.getValue();
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| event.property(key, pooled.size());
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| } |
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| } |
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| public void setServiceId(String serviceId)
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| { |
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| _serviceId = serviceId;
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| } |
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| } |