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sql2java manager class package for accessing database
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package gu.sql2java.manager.cache;

import java.sql.ResultSet;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import gu.sql2java.BaseBean;
import gu.sql2java.Constant;
import gu.sql2java.ListenerContainer;
import gu.sql2java.TableListener;
import gu.sql2java.TableManager;
import gu.sql2java.exception.DaoException;
import gu.sql2java.exception.ObjectRetrievalException;
import gu.sql2java.exception.RuntimeDaoException;
import gu.sql2java.manager.BaseTableManager;
import gu.sql2java.manager.TableManagerDecorator;

/**
 * cache implementation for BaseTableManager

 * @author guyadong
 */
public class CacheManager extends BaseTableManager
{
    /** instance of {@link TableCache} */
    private final TableCache cache;
    CacheManager(String tablename,UpdateStrategy updateStrategy,Long maximumSize, Long duration, TimeUnit unit) {
        super(tablename);
        cache = new TableCache<>(metaData,updateStrategy,maximumSize,duration,unit);
        cache.registerListener();
    }
    CacheManager(String tablename){
    	this(tablename, null, null, null, null);
    }
    /**
     * create a instance of DeviceCacheManager

     * @param tablename
     * @param updateStrategy cache update strategy,{@link Constant#DEFAULT_STRATEGY} be used if {@code null}
     * @param maximumSize maximum capacity of cache ,{@link Constant#DEFAULT_CACHE_MAXIMUMSIZE } be used if {@code null} or <=0,see also {@link com.google.common.cache.CacheBuilder#maximumSize(long)}
     * @param duration cache data expired time,{@link Constant#DEFAULT_DURATION} be used if {@code null} or <=0,see also {@link com.google.common.cache.CacheBuilder#expireAfterAccess(long, TimeUnit)}
     * @param unit time unit for {@code duration},{@link Constant#DEFAULT_TIME_UNIT} be used if {@code null},see also {@link com.google.common.cache.CacheBuilder#expireAfterAccess(long, TimeUnit)}
     */
    public static synchronized final TableManager makeCacheInstance(
    		String tablename,
    		UpdateStrategy updateStrategy,
    		long maximumSize, 
    		long duration, 
    		TimeUnit unit){
    	CacheManager manager = new CacheManager(tablename,updateStrategy,maximumSize,duration,unit);
    	return TableManagerDecorator.makeInterfaceInstance(manager);
    }
    @Override
    protected BaseBean doLoadByPrimaryKeyChecked(Object ...keys)throws RuntimeDaoException,ObjectRetrievalException{
        return cache.getBean(keys);
    }

    @Override
    protected boolean doExistsPrimaryKey(Object ...keys)throws RuntimeDaoException{
        return null != cache.getBeanUnchecked(keys);
    }
    
    @Override
    protected int actionOnResultSet(ResultSet rs, int[] fieldList, int startRow, int numRows, Action action) throws DaoException{
        if(null == fieldList || fieldList.length == 0){
            action = cache.wrap(action);
        }
        return super.actionOnResultSet(rs, fieldList, startRow, numRows, action);
    }
    
    @Override
    protected BaseBean doLoadUniqueByIndex(String indexName,Object ...indexValues)throws RuntimeDaoException{
        return cache.getBeanByIndexUnchecked(indexName, indexValues);
    }
    
    @Override
    protected BaseBean doLoadUniqueByIndexChecked(String indexName,Object ...indexValues)throws ObjectRetrievalException{
        return cache.getBeanByIndex(indexName, indexValues);
    }
    
    @Override
	public Map> getForeignKeyDeleteListeners(){
    	return cache.getManager().getForeignKeyDeleteListeners();
    }
    
    @Override
    public ListenerContainer getListenerContainer() {
		return cache.getManager().getListenerContainer();
	}
	/**
	 * 删除cache中主键(keys)指定的记录
	 * @param primaryKeys 主键值
	 * @since 3.30.0
	 */
    public void removeCached(Object... primaryKeys) {
    	cache.removeCached(primaryKeys);
    }
	/**
	 * 根据索引名删除缓存中索引值(keys)指定的记录
	 * @param indexName 索引名
	 * @param indexKeys 索引对象的字段值
	 * @since 3.30.0
	 */
    public void removeCachedByIndex(String indexName,Object... indexKeys) {
    	cache.removeCachedByIndex(indexName, indexKeys);
    }
    
    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append("CacheManager [cache=");
        builder.append(cache);
        builder.append("]");
        return builder.toString();
    }
}