foundation/org.eclipse.persistence.core/src/main/java/org/eclipse/persistence/internal/expressions/SubSelectDatabaseTable.java

/*
 * Copyright (c) 2011, 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
package org.eclipse.persistence.internal.expressions;

import java.io.IOException;

import org.eclipse.persistence.expressions.Expression;
import org.eclipse.persistence.internal.helper.*;

/**
 * INTERNAL:
 * Allow a table to reference a sub-select to support sub-selects in the from clause.
 * @author James Sutherland
 */
public class SubSelectDatabaseTable extends DatabaseTable {
    private Expression subSelect;

    public SubSelectDatabaseTable(Expression subSelect) {
        super();
        this.subSelect = subSelect;
    }

    public Expression getSubSelect() {
        return subSelect;
    }

    public void setSubSelect(Expression subSelect) {
        this.subSelect = subSelect;
    }

    /**
     * Print the table's SQL from clause.
     */
    @Override
    public void printSQL(ExpressionSQLPrinter printer) throws IOException {
        this.subSelect.printSQL(printer);
    }
}