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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed 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 org.apache.jasper.compiler;


import java.util.HashMap;

import org.apache.jasper.JasperException;

/**
 * Repository of {page, request, session, application}-scoped beans 
 *
 * @author Mandar Raje
 */
class BeanRepository {

    private HashMap beanTypes;
    private ClassLoader loader;
    private ErrorDispatcher errDispatcher;

    /*
     * Constructor.
     */    
    public BeanRepository(ClassLoader loader, ErrorDispatcher err) {

        this.loader = loader;
	this.errDispatcher = err;
	beanTypes = new HashMap();
    }
        
    public void addBean(Node.UseBean n, String s, String type, String scope)
	    throws JasperException {

	if (scope == null || scope.equals("page") ||
	    scope.equals("request") ||
	    scope.equals("session") ||
	    scope.equals("application") )
        {
	    beanTypes.put(s, type);
	} else {
	    errDispatcher.jspError(n, "jsp.error.invalid.scope", scope);
	}
	
    }
            
    public Class getBeanType(String bean) throws JasperException {
	Class clazz = null;
	try {
	    clazz = loader.loadClass (beanTypes.get(bean));
	} catch (ClassNotFoundException ex) {
	    throw new JasperException (ex);
	}
	return clazz;
    }
      
    public boolean checkVariable (String bean) {
        return beanTypes.containsKey(bean);
    }

}