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/**
 * Copyright (C) 2006  Robin Bygrave
 * 
 * This file is part of Ebean.
 * 
 * Ebean is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *  
 * Ebean is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with Ebean; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA  
 */
package com.avaje.ebeaninternal.server.deploy.parse;

import javax.persistence.CascadeType;
import javax.persistence.PersistenceException;

import com.avaje.ebean.annotation.LdapAttribute;
import com.avaje.ebean.config.ldap.LdapAttributeAdapter;
import com.avaje.ebeaninternal.server.deploy.BeanCascadeInfo;
import com.avaje.ebeaninternal.server.deploy.meta.DeployBeanDescriptor;
import com.avaje.ebeaninternal.server.deploy.meta.DeployBeanProperty;

/**
 * Base class for reading deployment annotations.
 */
public abstract class AnnotationParser extends AnnotationBase {

	protected final DeployBeanInfo info;
    
    protected final DeployBeanDescriptor descriptor;
        
    protected final Class beanType;
    
    public AnnotationParser(DeployBeanInfo info){
    	super(info.getUtil());
        this.info = info;
        this.beanType = info.getDescriptor().getBeanType();
        this.descriptor = info.getDescriptor();
    }
    
    /**
     * read the deployment annotations.
     */
    public abstract void parse();
    
    /**
     * Helper method to set cascade types to the CascadeInfo on BeanProperty.
     */
    protected void setCascadeTypes(CascadeType[] cascadeTypes, BeanCascadeInfo cascadeInfo) {
        if (cascadeTypes != null && cascadeTypes.length > 0) {
            cascadeInfo.setTypes(cascadeTypes);
        }
    }
    
    protected void readLdapAttribute(LdapAttribute ldapAttribute, DeployBeanProperty prop) {

        if (!isEmpty(ldapAttribute.name())){
            prop.setDbColumn(ldapAttribute.name());
        }
        prop.setDbInsertable(ldapAttribute.insertable());
        prop.setDbUpdateable(ldapAttribute.updatable());

        Class adapterCls = ldapAttribute.adapter();
        
        if (adapterCls != null && !void.class.equals(adapterCls)){
            try {
                LdapAttributeAdapter adapter = (LdapAttributeAdapter)adapterCls.newInstance();
                prop.setLdapAttributeAdapter(adapter);
            } catch (Exception e){
                String msg= "Error creating LdapAttributeAdapter for ["+prop.getFullBeanName()+"] "
                    +"with class ["+adapterCls+"] using the default constructor.";
                throw new PersistenceException(msg, e);
            }
        }
        
    }
}