cc.concurrent.mango.runtime.RuntimeContextImpl Maven / Gradle / Ivy

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mango is a dao framework.
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/*
 * Copyright 2014 mango.concurrent.cc
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

package cc.concurrent.mango.runtime;

import cc.concurrent.mango.util.reflect.BeanUtil;

import javax.annotation.Nullable;
import java.util.HashMap;
import java.util.Map;


/**
 * @author ash
 */
public class RuntimeContextImpl implements RuntimeContext {

    private final Map parameterMap;
    private final Map cache;

    public RuntimeContextImpl(Map parameterMap) {
        this.parameterMap = parameterMap;
        this.cache = new HashMap();
    }

    @Override
    public Object getPropertyValue(String parameterName, String propertyPath) {
        String key = getCacheKey(parameterName, propertyPath);
        Object cachedValue = cache.get(key);
        if (cachedValue != null) { // 非null缓存命中，直接返回
            return cachedValue;
        }
        Object object = parameterMap.get(parameterName);
        Object value = !propertyPath.isEmpty() ?
                BeanUtil.getPropertyValue(object, propertyPath, parameterName) :
                object;
        cache.put(key, value);
        return value;
    }

    @Override
    @Nullable
    public Object getNullablePropertyValue(String parameterName, String propertyPath) {
        String key = getCacheKey(parameterName, propertyPath);
        if (cache.containsKey(key)) { // 有可能缓存null对象
            return cache.get(key);
        }
        Object object = parameterMap.get(parameterName);
        Object value = !propertyPath.isEmpty() ?
                BeanUtil.getNullablePropertyValue(object, propertyPath, parameterName) :
                object;
        cache.put(key, value);
        return value;
    }

    @Override
    public void setPropertyValue(String parameterName, String propertyPath, Object value) {
        String key = getCacheKey(parameterName, propertyPath);
        cache.put(key, value);
    }

    private String getCacheKey(String parameterName, String propertyPath) {
        return propertyPath.isEmpty() ? parameterName : parameterName + "." + propertyPath;
    }

}