| /******************************************************************************* |
| * Copyright (c) 2007, 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.context; |
| |
| import org.eclipse.jpt.common.utility.internal.iterables.ListIterable; |
| |
| /** |
| * Read-only reference table (i.e. a table that joins with one other table, |
| * as opposed to a "join table" that joins with two other tables)<ul> |
| * <li>join table |
| * <li>collection table |
| * </ul> |
| * 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. |
| */ |
| public interface ReadOnlyReferenceTable |
| extends ReadOnlyTable |
| { |
| // TODO is this method necessary? |
| PersistentAttribute getPersistentAttribute(); |
| |
| |
| // ********** join columns ********** |
| |
| /** |
| * Return the reference table's join columns, whether specified or default. |
| */ |
| ListIterable<? extends ReadOnlyJoinColumn> getJoinColumns(); |
| |
| /** |
| * Return the number of join columns, whether specified or default. |
| */ |
| int getJoinColumnsSize(); |
| |
| /** |
| * Return the reference table's specified join columns. |
| */ |
| ListIterable<? extends ReadOnlyJoinColumn> getSpecifiedJoinColumns(); |
| String SPECIFIED_JOIN_COLUMNS_LIST = "specifiedJoinColumns"; //$NON-NLS-1$ |
| |
| /** |
| * Return the number of specified join columns. |
| */ |
| int getSpecifiedJoinColumnsSize(); |
| |
| /** |
| * Return whether the reference table has specified join columns. |
| */ |
| boolean hasSpecifiedJoinColumns(); |
| |
| /** |
| * Return the specified join column at the specified index. |
| */ |
| ReadOnlyJoinColumn getSpecifiedJoinColumn(int index); |
| |
| /** |
| * Return the default join column or <code>null</code>. |
| * A default join column only exists if there are no specified join columns. |
| */ |
| ReadOnlyJoinColumn getDefaultJoinColumn(); |
| String DEFAULT_JOIN_COLUMN_PROPERTY = "defaultJoinColumn"; //$NON-NLS-1$ |
| } |