OracleMergeTest.java

/*
 * 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;

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 OracleMergeTest extends OracleTest {

    public void test_0() throws Exception {
        String sql = "MERGE INTO bonuses D" + //
                     "   USING (SELECT employee_id, salary, department_id FROM employees" + //
                     "   WHERE department_id = 80) S" + //
                     "   ON (D.employee_id = S.employee_id)" + //
                     "   WHEN MATCHED THEN UPDATE SET D.bonus = D.bonus + S.salary*0.01" + //
                     "     DELETE WHERE (S.salary > 8000)" + //
                     "   WHEN NOT MATCHED THEN INSERT (D.employee_id, D.bonus)" + //
                     "     VALUES (S.employee_id, S.salary*0.01)" + //
                     "     WHERE (S.salary <= 8000);";

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

        Assert.assertEquals(1, statementList.size());

        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
        statemen.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());

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

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

        Assert.assertEquals(5, visitor.getColumns().size());

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

}