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OpenJPA Kernel
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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.openjpa.meta;

import java.lang.reflect.Member;

import org.apache.openjpa.event.CallbackModes;

/**
 * Populates new metadata with default values.
 *
 * @author Abe White
 */
public interface MetaDataDefaults
    extends CallbackModes {

    /**
     * Return the default access type for a base persistent class with
     * {@link ClassMetaData#ACCESS_UNKNOWN} access type.
     */
    public int getDefaultAccessType();

    /**
     * Return the default identity type for unmapped classes without primary
     * key fields.
     */
    public int getDefaultIdentityType();

    /**
     * What to do on lifecycle callback exceptions.
     */
    public int getCallbackMode();

    /**
     * If callbacks are fired before listeners for the given
     * event type. Defaults to false.
     */
    public boolean getCallbacksBeforeListeners(int type);
   
    /**
     * Whether declared interfaces of a class are treated as persistent
     * types. Defaults to true.
     */
    public boolean isDeclaredInterfacePersistent();

    /**
     * Whether the field in the object id class corresponding to a 
     * datastore id persistence-capable primary key field is the simple 
     * datastore id value of the related instance.  Defaults to false.
     */
    public boolean isDataStoreObjectIdFieldUnwrapped();
 
    /**
     * Whether to ignore members which are not persistent by default
     * during metadata population. Defaults to true.
     */
    public void setIgnoreNonPersistent(boolean ignore);

    /**
     * Populate the given metadata with default settings.
     *
     * @param access access type constant from {@link ClassMetaData}
     */
    public void populate(ClassMetaData meta, int access);

    /**
     * Return the backing member for the given field metadata.
     */
    public Member getBackingMember(FieldMetaData field);

    /**
     * Return a runtime exception class to throw for un-implemented
     * managed interface methods.
     */
    public Class getUnimplementedExceptionType();
}