// Decompiled by DJ v2.9.9.61 Copyright 2000 Atanas Neshkov  Date: 10/07/2007 15:50:01
// Home Page : http://members.fortunecity.com/neshkov/dj.html  - Check often for new version!
// Decompiler options: packimports(3) 
// Source File Name:   Decorator.java

package org.displaytag.decorator;

import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.jsp.PageContext;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.lang.BooleanUtils;

abstract class Decorator
{

    Decorator()
    {
    }

    public void init(PageContext context, Object decorated)
    {
        pageContext = context;
        decoratedObject = decorated;
    }

    public PageContext getPageContext()
    {
        return pageContext;
    }

    public Object getDecoratedObject()
    {
        return decoratedObject;
    }

    public void finish()
    {
        pageContext = null;
        decoratedObject = null;
    }

    public boolean hasGetterFor(String propertyName)
    {
        String simpleProperty = propertyName;
        int indexOfDot = simpleProperty.indexOf('.');
        if(indexOfDot > 0)
            simpleProperty = simpleProperty.substring(0, indexOfDot);
        Boolean cachedResult = (Boolean)propertyMap.get(getClass().getName() + '#' + simpleProperty);
        if(cachedResult != null)
        {
            return cachedResult.booleanValue();
        } else
        {
            boolean hasGetter = searchGetterFor(propertyName);
            propertyMap.put(getClass().getName() + '#' + simpleProperty, BooleanUtils.toBooleanObject(hasGetter));
            return hasGetter;
        }
    }

    public boolean searchGetterFor(String propertyName)
    {
        Class type = null;
        try
        {
            type = PropertyUtils.getPropertyType(this, propertyName);
        }
        catch(IllegalAccessException e) { }
        catch(InvocationTargetException e) { }
        catch(NoSuchMethodException e) { }
        return type != null;
    }

    private static final char CLASS_PROPERTY_SEPARATOR = 35;
    private static Map propertyMap = new HashMap();
    private PageContext pageContext;
    private Object decoratedObject;

}