jpa/plugins/org.eclipse.jpt.jpa.core/src/org/eclipse/jpt/jpa/core/EntityGeneratorDatabaseAnnotationNameBuilder.java

/*******************************************************************************
 * Copyright (c) 2008, 2011 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 * 
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jpa.core;

import org.eclipse.jpt.jpa.db.Column;
import org.eclipse.jpt.jpa.db.ForeignKey;
import org.eclipse.jpt.jpa.db.Table;

/**
 * Provide a pluggable way to determine whether and how the entity generator
 * prints the names of various database objects.
 * <p>
 * Provisional API: This interface is part of an interim API that is still
 * under development and expected to change significantly before reaching
 * stability. It is available at this early stage to solicit feedback from
 * pioneering adopters on the understanding that any code that uses this API
 * will almost certainly be broken (repeatedly) as the API evolves.
 * 
 * @version 2.1
 * @since 2.1
 */
public interface EntityGeneratorDatabaseAnnotationNameBuilder {

	/**
	 * Given the name of an entity and the table to which it is mapped,
	 * build and return a string to be used as the value for the entity's
	 * <code>Table</code> annotation's <code>name</code> element.
	 * Return <code>null</code> if the entity maps to the table by default.
	 */
	String buildTableAnnotationName(String entityName, Table table);

	/**
	 * Given the name of an attribute (field or property) and the column
	 * to which it is mapped,
	 * build and return a string to be used as the value for the attribute's
	 * <code>Column</code> annotation's <code>name</code> element.
	 * Return <code>null</code> if the attribute maps to the column by default.
	 */
	String buildColumnAnnotationName(String attributeName, Column column);

	/**
	 * Given the name of an attribute (field or property) and the
	 * many-to-one or many-to-many foreign key to which it is mapped,
	 * build and return a string to be used as the value for the attribute's
	 * <code>JoinColumn</code> annotation's <code>name</code> element.
	 * Return <code>null</code> if the attribute maps to the join column by default.
	 * The specified foreign key consists of a single column pair whose
	 * referenced column is the single-column primary key of the foreign
	 * key's referenced table.
	 */
	String buildJoinColumnAnnotationName(String attributeName, ForeignKey foreignKey);

	/**
	 * Build and return a string to be used as the value for a <code>JoinColumn</code>
	 * annotation's <code>name</code> or <code>referencedColumnName</code> element.
	 * This is called for many-to-one and many-to-many mappings when
	 * the default join column name and/or referenced column name are/is
	 * not applicable.
	 * 
	 * @see #buildJoinColumnAnnotationName(String, ForeignKey)
	 */
	String buildJoinColumnAnnotationName(Column column);

	/**
	 * Build and return a string to be used as the value for a <code>JoinTable</code>
	 * annotation's <code>name</code> element.
	 * This is called for many-to-many mappings when the default
	 * join table name is not applicable.
	 */
	String buildJoinTableAnnotationName(Table table);
}