/*
 * Copyright 1999-2018 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.block;

import java.util.List;

import org.junit.Assert;

import com.alibaba.druid.sql.OracleTest;
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.stat.TableStat;

public class OracleBlockTest7 extends OracleTest {
    public void test_0() throws Exception {
        String sql = "DROP TABLE employees_temp; " + //
                "CREATE TABLE employees_temp AS " + //
                "  SELECT employee_id, first_name, last_name " + //
                "  FROM employees;" + //
                " " + //
                "DECLARE" + //
                "  emp_id          employees_temp.employee_id%TYPE := 299;" + //
                "  emp_first_name  employees_temp.first_name%TYPE  := 'Bob';" + //
                "  emp_last_name   employees_temp.last_name%TYPE   := 'Henry';" + //
                "BEGIN" + //
                "  INSERT INTO employees_temp (employee_id, first_name, last_name) " + //
                "  VALUES (emp_id, emp_first_name, emp_last_name);" + //
                " " + //
                "  UPDATE employees_temp" + //
                "  SET first_name = 'Robert'" + //
                "  WHERE employee_id = emp_id;" + //
                " " + //
                "  DELETE FROM employees_temp" + //
                "  WHERE employee_id = emp_id" + //
                "  RETURNING first_name, last_name" + //
                "  INTO emp_first_name, emp_last_name;" + //
                "" + //
                "  COMMIT;" + //
                "  DBMS_OUTPUT.PUT_LINE (emp_first_name || ' ' || emp_last_name);" + //
                "END;"; //

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

        Assert.assertEquals(3, statementList.size());

        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
        for (SQLStatement statement : statementList) {
            statement.accept(visitor);
        }

        System.out.println("Tables : " + visitor.getTables());
        System.out.println("fields : " + visitor.getColumns());
        System.out.println("coditions : " + visitor.getConditions());
        System.out.println("relationships : " + visitor.getRelationships());
        System.out.println("orderBy : " + visitor.getOrderByColumns());

        Assert.assertEquals(2, visitor.getTables().size());

        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("employees")));
        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("employees_temp")));

        Assert.assertEquals(6, visitor.getColumns().size());
        Assert.assertEquals(1, visitor.getConditions().size());

        Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("employees", "employee_id")));
    }
}
