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package com.emc.documentum.springdata.core;

import com.google.common.cache.CacheBuilder;
import com.google.common.cache.Cache;

import java.util.concurrent.TimeUnit;

public class GenericCache {
   
   private static Cache< Object, Object > cache;
   
    public GenericCache() {
      createCache();
    }

  private synchronized void createCache() {
    if(cache == null){
        cache = CacheBuilder.newBuilder()
              .concurrencyLevel(4)
              .maximumSize(10000)
              .expireAfterWrite(10, TimeUnit.MINUTES)
              .build();
      }
  }
   
    public Object getEntry( Object key ) {
      try {
        return cache.getIfPresent( key );
      } catch (Exception e) {
        return  null;
      }
    }
    
    public void setEntry(Object key, Object value){
     cache.asMap().put(key, value);
    }
}

//TODO: take all the concurrency properties for the user from a property file