com.jn.sqlhelper.common.resultset.CachedEntityBeanClassParser Maven / Gradle / Ivy

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package com.jn.sqlhelper.common.resultset;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class CachedEntityBeanClassParser extends EntityBeanClassParser {
    private static final CachedEntityBeanClassParser instance = new CachedEntityBeanClassParser();

    private ConcurrentHashMap> cache = new ConcurrentHashMap>();

    private CachedEntityBeanClassParser() {

    }

    public static CachedEntityBeanClassParser getInstance() {
        return instance;
    }

    @Override
    public Map parse(Class clazz) {
        if (cache.containsKey(clazz)) {
            return cache.get(clazz);
        }
        Map entityFieldInfoMap = super.parse(clazz);
        cache.putIfAbsent(clazz, entityFieldInfoMap);
        return entityFieldInfoMap;
    }
}