openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/AccessDictionary.java

/*
 * 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.
 */
package org.apache.openjpa.jdbc.sql;

import java.sql.PreparedStatement;
import java.sql.SQLException;

import org.apache.openjpa.jdbc.schema.Column;

/**
 * Dictionary for Access via DataDirect SequeLink and DataDirect ODBC
 * FoxPro driver. This will not work with any other combination of JDBC/ODBC
 * server and ODBC driver.
 */
public class AccessDictionary
    extends DBDictionary {

    public AccessDictionary() {
        platform = "Microsoft Access";
        joinSyntax = SYNTAX_TRADITIONAL;
        validationSQL = "SELECT 1";
        reservedWordSet.add("VALUE");
        // OpenJPA-2045: NAME has been removed from common reserved words to
        // only specific dictionaries
        reservedWordSet.add("NAME");

        supportsAutoAssign = true;
        autoAssignTypeName = "COUNTER";
        lastGeneratedKeyQuery = "SELECT @@identity";
        maxTableNameLength = 64;
        maxColumnNameLength = 64;
        maxIndexNameLength = 64;
        maxConstraintNameLength = 64;

        useGetBytesForBlobs = true;
        useGetBestRowIdentifierForPrimaryKeys = true;

        binaryTypeName = "LONGBINARY";
        blobTypeName = "LONGBINARY";
        longVarbinaryTypeName = "LONGBINARY";
        clobTypeName = "LONGCHAR";
        longVarcharTypeName = "LONGCHAR";
        bigintTypeName = "REAL";
        numericTypeName = "REAL";
        integerTypeName = "INTEGER";
        smallintTypeName = "SMALLINT";
        tinyintTypeName = "SMALLINT";

        supportsForeignKeys = false;
        supportsDeferredConstraints = false;
        maxIndexesPerTable = 32;

        substringFunctionName = "MID";

        setLeadingDelimiter("[");
        setTrailingDelimiter("]");
    }


    @Override
    public void setLong(PreparedStatement stmnt, int idx, long val, Column col)
        throws SQLException {
        // the access driver disallows setLong for some reason; use
        // setInt if possible, otherwise use setDouble

        if (val < Integer.MAX_VALUE && val > Integer.MIN_VALUE)
            stmnt.setInt(idx, (int) val);
        else
            stmnt.setDouble(idx, val);
    }
}