phoenix-core/src/it/java/org/apache/phoenix/end2end/index/AlterIndexIT.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.phoenix.end2end.index;

import org.apache.phoenix.end2end.ParallelStatsDisabledIT;
import org.apache.phoenix.util.TestUtil;
import org.junit.Assert;
import org.junit.Test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class AlterIndexIT extends ParallelStatsDisabledIT {

    @Test
    public void testAlterIndexRebuildNoAsync() throws Exception {
        String indexName = "I_" + generateUniqueName();
        String tableName = "T_" + generateUniqueName();
        try (Connection conn = DriverManager.getConnection(getUrl())) {
            createAndPopulateTable(conn, tableName);
            Assert.assertEquals(2, TestUtil.getRowCount(conn, tableName));
            createIndex(conn, indexName, tableName, "val1", "val2, val3");
            Assert.assertEquals(2, TestUtil.getRowCount(conn, indexName));
            rebuildIndex(conn, indexName, tableName, false);
            Assert.assertEquals(2, TestUtil.getRowCount(conn, indexName));
        }
    }

    private void createAndPopulateTable(Connection conn, String tableName) throws Exception {
        conn.createStatement().execute("create table " + tableName +
            " (id varchar(10) not null primary key, val1 varchar(10), " +
            "val2 varchar(10), val3 varchar(10))");
        conn.createStatement().execute("upsert into " + tableName + " " +
            "values ('a', 'ab', 'abc', 'abcd')");
        conn.commit();
        conn.createStatement().execute("upsert into " + tableName +
            " values ('b', 'bc', 'bcd', 'bcde')");
        conn.commit();
    }

    private void createIndex(Connection conn, String indexName, String tableName,
                                      String columns, String includeColumns)
        throws SQLException {
        String ddl = "CREATE INDEX " + indexName + " ON " + tableName + " (" + columns + ")" +
            " INCLUDE (" + includeColumns + ")";
        conn.createStatement().execute(ddl);
    }

    private void rebuildIndex(Connection conn, String indexName, String tableName, boolean async)
        throws SQLException {
        String format = "ALTER INDEX %s ON %s REBUILD" + (async ? " ASYNC" : "");
        String sql = String.format(format, indexName, tableName);
            conn.createStatement().execute(sql);
            conn.commit();

    }
}