flexjson.BeanProperty Maven / Gradle / Ivy

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package flexjson;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

public class BeanProperty
{
	private String name;
	private BeanAnalyzer bean;
	private Class propertyType;
	protected Field property;
	protected Method readMethod;
	protected Method writeMethod;
	protected Map, Method> writeMethods= new HashMap, Method>();

	public BeanProperty(String name, BeanAnalyzer bean)
	{
		this.name= name;
		this.bean= bean;
		this.property= bean.getDeclaredField(name);
	}

	public BeanProperty(Field property, BeanAnalyzer bean)
	{
		this.name= property.getName();
		this.bean= bean;
		this.property= property;
		this.propertyType= property.getType();
	}

	public String getName()
	{
		return name;
	}

	public Field getProperty()
	{
		return property;
	}

	public Class getPropertyType()
	{
		return propertyType;
	}

	public Method getReadMethod()
	{
		if (readMethod == null && bean.getSuperBean() != null && bean.getSuperBean().hasProperty(name))
		{
			return bean.getSuperBean().getProperty(name).getReadMethod();
		}
		else
		{
			return readMethod;
		}
	}

	public Method getWriteMethod()
	{
		if (writeMethod == null)
		{
			writeMethod= writeMethods.get(propertyType);
			if (writeMethod == null && bean.getSuperBean() != null && bean.getSuperBean().hasProperty(name))
			{
				return bean.getSuperBean().getProperty(name).getWriteMethod();
			}
		}
		return writeMethod;
	}

	public Collection getWriteMethods()
	{
		return writeMethods.values();
	}

	public void addWriteMethod(Method method)
	{
		Class clazz= method.getParameterTypes()[0];
		if (propertyType == null)
		{
			propertyType= clazz;
		}
		writeMethods.put(clazz, method);
		method.setAccessible(true);
	}

	public void setReadMethod(Method method)
	{
		if (propertyType == null)
		{
			propertyType= method.getReturnType();
			readMethod= method;
			readMethod.setAccessible(true);
		}
		else if (propertyType == method.getReturnType())
		{
			readMethod= method;
			readMethod.setAccessible(true);
		}
	}

	public Boolean isAnnotated()
	{
		Method rm= getReadMethod();
		if (rm != null)
		{
			if (rm.isAnnotationPresent(JSON.class))
			{
				return rm.getAnnotation(JSON.class).include();
			}
		}
		else if (property != null)
		{
			if (property.isAnnotationPresent(JSON.class))
			{
				return property.getAnnotation(JSON.class).include();
			}
		}
		return null;
	}

	public Object getValue(Object instance) throws InvocationTargetException, IllegalAccessException
	{
		Method rm= getReadMethod();
		if (rm != null)
		{
			return rm.invoke(instance, (Object[]) null);
		}
		else if (property != null)
		{
			return property.get(instance);
		}
		else
		{
			return null;
		}
	}

	public Boolean isReadable()
	{
		Method rm= getReadMethod();
		return rm != null && !Modifier.isStatic(rm.getModifiers()) || property != null && !Modifier.isStatic(property.getModifiers()) && !Modifier.isTransient(property.getModifiers());
	}

	public Boolean isWritable()
	{
		Method wm= getWriteMethod();
		return wm != null && Modifier.isPublic(wm.getModifiers()) || property != null && Modifier.isPublic(property.getModifiers()) && !Modifier.isTransient(property.getModifiers());
	}
}