Package org.apache.ddlutils.platform.hsqldb

Source Code of org.apache.ddlutils.platform.hsqldb.HsqlDbPlatform

package org.apache.ddlutils.platform.hsqldb;

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Types;

import org.apache.ddlutils.DdlUtilsException;
import org.apache.ddlutils.PlatformInfo;
import org.apache.ddlutils.platform.PlatformImplBase;

/**
* The platform implementation for the HsqlDb database.
*
* @version $Revision: 231306 $
*/
public class HsqlDbPlatform extends PlatformImplBase
{
    /** Database name of this platform. */
    public static final String DATABASENAME     = "HsqlDb";
    /** The standard Hsqldb jdbc driver. */
    public static final String JDBC_DRIVER      = "org.hsqldb.jdbcDriver";
    /** The subprotocol used by the standard Hsqldb driver. */
    public static final String JDBC_SUBPROTOCOL = "hsqldb";

    /**
     * Creates a new instance of the Hsqldb platform.
     */
    public HsqlDbPlatform()
    {
        PlatformInfo info = getPlatformInfo();

        info.setNonPKIdentityColumnsSupported(false);
        info.setIdentityOverrideAllowed(false);
        info.setSystemForeignKeyIndicesAlwaysNonUnique(true);

        info.addNativeTypeMapping(Types.ARRAY,       "LONGVARBINARY", Types.LONGVARBINARY);
        info.addNativeTypeMapping(Types.BLOB,        "LONGVARBINARY", Types.LONGVARBINARY);
        info.addNativeTypeMapping(Types.CLOB,        "LONGVARCHAR",   Types.LONGVARCHAR);
        info.addNativeTypeMapping(Types.DISTINCT,    "LONGVARBINARY", Types.LONGVARBINARY);
        info.addNativeTypeMapping(Types.FLOAT,       "DOUBLE",        Types.DOUBLE);
        info.addNativeTypeMapping(Types.JAVA_OBJECT, "OBJECT");
        info.addNativeTypeMapping(Types.NULL,        "LONGVARBINARY", Types.LONGVARBINARY);
        info.addNativeTypeMapping(Types.REF,         "LONGVARBINARY", Types.LONGVARBINARY);
        info.addNativeTypeMapping(Types.STRUCT,      "LONGVARBINARY", Types.LONGVARBINARY);
        // JDBC's TINYINT requires a value range of -255 to 255, but HsqlDb's is only -128 to 127
        info.addNativeTypeMapping(Types.TINYINT,     "SMALLINT",      Types.SMALLINT);

        info.addNativeTypeMapping("BIT",      "BOOLEAN",       "BOOLEAN");
        info.addNativeTypeMapping("DATALINK", "LONGVARBINARY", "LONGVARBINARY");

        info.setDefaultSize(Types.CHAR,      Integer.MAX_VALUE);
        info.setDefaultSize(Types.VARCHAR,   Integer.MAX_VALUE);
        info.setDefaultSize(Types.BINARY,    Integer.MAX_VALUE);
        info.setDefaultSize(Types.VARBINARY, Integer.MAX_VALUE);

        setSqlBuilder(new HsqlDbBuilder(this));
        setModelReader(new HsqlDbModelReader(this));
    }

    /**
     * {@inheritDoc}
     */
    public String getName()
    {
        return DATABASENAME;
    }

    /**
     * {@inheritDoc}
     */
    public void shutdownDatabase(Connection connection)
    {
        Statement stmt = null;

        try
        {
            stmt = connection.createStatement();
            stmt.executeUpdate("SHUTDOWN");
        }
        catch (SQLException ex)
        {
            throw new DdlUtilsException(ex);
        }
        finally
        {
            closeStatement(stmt);   
        }
    }
}
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