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'jdbacl' stands for 'Java DataBase ACcess Layer' and provides utilities for accessing JDBC databases from Java programs, retrieving meta information in an object model and querying database data. 'rapiddweller jdbacl' is forked from Databene jdbacl by Volker Bergmann.

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/*
 * (c) Copyright 2010-2014 by Volker Bergmann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted under the terms of the
 * GNU General Public License (GPL).
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
 * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
 * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package com.rapiddweller.jdbacl.model.sql;

import com.rapiddweller.common.IOUtil;
import com.rapiddweller.jdbacl.DBUtil;
import com.rapiddweller.jdbacl.DatabaseDialect;
import com.rapiddweller.jdbacl.DatabaseDialectManager;
import com.rapiddweller.jdbacl.NameSpec;
import com.rapiddweller.jdbacl.SQLUtil;
import com.rapiddweller.jdbacl.model.DBForeignKeyConstraint;
import com.rapiddweller.jdbacl.model.DBMetaDataExporter;
import com.rapiddweller.jdbacl.model.DBSequence;
import com.rapiddweller.jdbacl.model.DBTable;
import com.rapiddweller.jdbacl.model.Database;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Set;

/**
 * Exports database meta data to a DDL file with CREATE TABLE commands.


 * Created: 11.08.2010 16:23:59
 *
 * @author Volker Bergmann
 * @since 0.6.10
 */
public class CreateExporter implements DBMetaDataExporter {

  /**
   * The File.
   */
  final File file;

  /**
   * Instantiates a new Create exporter.
   *
   * @param file the file
   */
  public CreateExporter(File file) {
    this.file = file;
  }

  @Override
  public void export(Database database) throws IOException {
    PrintWriter out = null;
    try {
      out = new PrintWriter(new FileWriter(file));
      exportSequences(database, out);
      exportTables(database, out);
      exportForeignKeys(database, out);
    } finally {
      IOUtil.close(out);
    }
  }

  private static void exportSequences(Database database, PrintWriter out) {
    List sequences = database.getSequences(true);
    DatabaseDialect dialect = DatabaseDialectManager.getDialectForProduct(
        database.getDatabaseProductName(), database.getDatabaseProductVersion());
    for (DBSequence sequence : sequences) {
      out.print(dialect.renderCreateSequence(sequence));
      out.println(';');
      out.println();
    }
  }

  private static void exportTables(Database database, PrintWriter out) {
    List tables = DBUtil.dependencyOrderedTables(database);
    for (DBTable table : tables) {
      SQLUtil.renderCreateTable(table, false, NameSpec.IF_REPRODUCIBLE, out);
      out.println(';');
      out.println();
    }
  }

  private static void exportForeignKeys(Database database, PrintWriter out) {
    for (DBTable table : database.getTables()) {
      exportForeignKeys(table, out);
    }
  }

  private static void exportForeignKeys(DBTable table, PrintWriter out) {
    Set fks = table.getForeignKeyConstraints();
    for (DBForeignKeyConstraint fk : fks) {
      SQLUtil.renderAddForeignKey(fk, NameSpec.IF_REPRODUCIBLE, out);
      out.println(';');
      out.println();
    }
  }

}