com.holmos.cache.size.layout.sizegetter.ReflectSizeGetter Maven / Gradle / Ivy

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package com.holmos.cache.size.layout.sizegetter;

import java.util.ArrayList;

import com.holmos.cache.size.layout.ClassSizeInfoParser;

/**
 * 通过反射来层层解析获取对象的占用内存的大小
 * 
 * @author 吴银龙([email protected])
 * */
public class ReflectSizeGetter {
	/**对象大小获取器,如果在此获取器集合里面找不到合适的,则抛出异常,用了链模式和访问者模式*/
	protected ArrayList sizeGetters;
	
	public ReflectSizeGetter(ArrayList sizeGetters){
		this.sizeGetters=sizeGetters;
	}
	
	public int getDataSize(Object value){
		if(value.getClass().isPrimitive())
			return 1;
		int size=0;
		for(SizeGetter getter:sizeGetters){
			if(getter.canGet(value)){
				size+=getter.getsize(value);
			}
		}
		return size;
	}
	
	
	public int getDataSize(long value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(long.class);
	}
	
	public int getDataSize(double value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(double.class);
	}
	
	public int getDataSize(int value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(int.class);
	}
	
	public int getDataSize(float value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(float.class);
	}
	
	public int getDataSize(char value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(char.class);
	}
	
	public int getDataSize(short value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(short.class);
	}
	
	public int getDataSize(byte value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(byte.class);
	}
	
	public int getDataSize(boolean value){
		return ClassSizeInfoParser.getLayoutSpecification().getPrimitiveSize(boolean.class);
	}
}