/*
 * Copyright 1999-2017 Alibaba Group Holding Ltd.
 *
 * Licensed 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 com.alibaba.druid.bvt.sql.oracle.create;

import java.util.List;

import org.junit.Assert;

import com.alibaba.druid.sql.OracleTest;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
import com.alibaba.druid.sql.dialect.oracle.visitor.OracleSchemaStatVisitor;
import com.alibaba.druid.util.JdbcConstants;

public class OracleCreateDbLinkTest extends OracleTest {

    public void test_0() throws Exception {
        String sql = //
        "CREATE PUBLIC DATABASE LINK remote USING 'remote'; ";

        OracleStatementParser parser = new OracleStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();
        SQLStatement statement = statementList.get(0);
        print(statementList);

        Assert.assertEquals("CREATE PUBLIC DATABASE LINK remote USING 'remote'",
                            SQLUtils.toSQLString(statement, JdbcConstants.ORACLE));

        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
        statement.accept(visitor);

        Assert.assertEquals(0, visitor.getTables().size());
    }
    
    public void test_1() throws Exception {
        String sql = //
        "CREATE DATABASE LINK local CONNECT TO hr IDENTIFIED BY hr USING 'local';";

        OracleStatementParser parser = new OracleStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();
        SQLStatement statement = statementList.get(0);
        print(statementList);

        Assert.assertEquals("CREATE DATABASE LINK local CONNECT TO hr IDENTIFIED BY hr USING 'local'",
                            SQLUtils.toSQLString(statement, JdbcConstants.ORACLE));

        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
        statement.accept(visitor);

        Assert.assertEquals(0, visitor.getTables().size());
    }
    
    
    public void test_2() throws Exception {
        String sql = //
        "CREATE DATABASE LINK remote.us.oracle.com CONNECT TO CURRENT_USER USING 'remote';";

        OracleStatementParser parser = new OracleStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();
        SQLStatement statement = statementList.get(0);
        print(statementList);

        Assert.assertEquals("CREATE DATABASE LINK remote.us.oracle.com CONNECT TO CURRENT_USER USING 'remote'",
                            SQLUtils.toSQLString(statement, JdbcConstants.ORACLE));

        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
        statement.accept(visitor);

        Assert.assertEquals(0, visitor.getTables().size());
    }
}