| /* |
| * Copyright (c) 1998, 2021 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.internal.expressions; |
| |
| import java.io.*; |
| import org.eclipse.persistence.internal.helper.*; |
| import org.eclipse.persistence.internal.sessions.DatabaseSessionImpl; |
| import org.eclipse.persistence.expressions.*; |
| import org.eclipse.persistence.internal.databaseaccess.DatabaseCall; |
| import org.eclipse.persistence.internal.sessions.AbstractRecord; |
| import org.eclipse.persistence.internal.sessions.AbstractSession; |
| |
| /** |
| * <p><b>Purpose</b>: Mirror SQL behavior. |
| * <p><b>Responsibilities</b>:<ul> |
| * <li> Mirror SQL behavior. |
| * <li> Print as SQL string. |
| * </ul> |
| * @author Dorin Sandu |
| * @since TOPLink/Java 1.0 |
| */ |
| public abstract class SQLStatement implements Serializable, Cloneable { |
| protected Expression whereClause; |
| protected ExpressionBuilder builder; |
| protected AbstractRecord translationRow; |
| protected String hintString; |
| |
| /** |
| * Default constructor. |
| */ |
| protected SQLStatement() { |
| } |
| |
| /** |
| * Return SQL call for the statement, through generating the SQL string. |
| */ |
| public abstract DatabaseCall buildCall(AbstractSession session); |
| |
| /** |
| * Clone the Statement |
| */ |
| @Override |
| public Object clone() { |
| try { |
| return super.clone(); |
| } catch (CloneNotSupportedException e) { |
| throw new InternalError(); |
| } |
| } |
| |
| public ExpressionBuilder getBuilder() { |
| return builder; |
| } |
| |
| public ExpressionBuilder getExpressionBuilder() { |
| return builder; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the Hint String for the statement |
| */ |
| public String getHintString() { |
| return hintString; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the row for translation |
| */ |
| public AbstractRecord getTranslationRow() { |
| return translationRow; |
| } |
| |
| public Expression getWhereClause() { |
| return whereClause; |
| } |
| |
| /** |
| * INTERNAL: |
| * Set the Hint String for the statement |
| */ |
| public void setHintString(String newHintString) { |
| hintString = newHintString; |
| } |
| |
| protected void setBuilder(ExpressionBuilder aBuilder) { |
| builder = aBuilder; |
| } |
| |
| /** |
| * INTERNAL: |
| * Set the row for translation |
| */ |
| public void setTranslationRow(AbstractRecord theRow) { |
| translationRow = theRow; |
| } |
| |
| public void setWhereClause(Expression expression) { |
| whereClause = expression; |
| if (expression != null) { |
| builder = expression.getBuilder(); |
| } |
| } |
| |
| /** |
| * Try to print the SQL. |
| */ |
| @Override |
| public String toString() { |
| StringWriter writer = new StringWriter(); |
| writer.write(Helper.getShortClassName(getClass())); |
| writer.write("("); |
| |
| try { |
| DatabaseCall call = buildCall(new DatabaseSessionImpl(new org.eclipse.persistence.sessions.DatabaseLogin())); |
| writer.write(call.getSQLString()); |
| } catch (Exception exception) { |
| } |
| writer.write(")"); |
| |
| return writer.toString(); |
| } |
| } |