| /* |
| * Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.tools.schemaframework; |
| |
| import java.io.*; |
| import org.eclipse.persistence.exceptions.*; |
| import org.eclipse.persistence.internal.sessions.AbstractSession; |
| |
| /** |
| * <p> |
| * <b>Purpose</b>: Allow for creation of views. |
| * </p> |
| */ |
| public class ViewDefinition extends DatabaseObjectDefinition { |
| protected String selectClause; |
| |
| public ViewDefinition() { |
| super(); |
| this.selectClause = ""; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the DDL to create the view. |
| */ |
| @Override |
| public Writer buildCreationWriter(AbstractSession session, Writer writer) throws ValidationException { |
| try { |
| writer.write(session.getPlatform().getCreateViewString()); |
| writer.write(getFullName()); |
| writer.write(" AS ("); |
| writer.write(getSelectClause()); |
| writer.write(")"); |
| } catch (IOException ioException) { |
| throw ValidationException.fileError(ioException); |
| } |
| return writer; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the DDL to drop the view. |
| */ |
| @Override |
| public Writer buildDeletionWriter(AbstractSession session, Writer writer) throws ValidationException { |
| try { |
| writer.write("DROP VIEW " + getFullName()); |
| } catch (IOException ioException) { |
| throw ValidationException.fileError(ioException); |
| } |
| return writer; |
| } |
| |
| /** |
| * The select clause is the select statement that is mapped into the view. |
| * This is database specific SQL code. |
| */ |
| public String getSelectClause() { |
| return selectClause; |
| } |
| |
| /** |
| * The select clause is the select statement that is mapped into the view. |
| * This is database specific SQL code. |
| */ |
| public void setSelectClause(String selectClause) { |
| this.selectClause = selectClause; |
| } |
| } |