| /* |
| * 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; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.sql.Connection; |
| import java.sql.DriverManager; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| |
| @Category(ParallelStatsDisabledTest.class) |
| public class ReverseFunctionIT extends ParallelStatsDisabledIT { |
| |
| private String initTable(Connection conn, String sortOrder, String s) throws Exception { |
| String reverseTest = generateUniqueName(); |
| String ddl = "CREATE TABLE " + reverseTest + " (pk VARCHAR NOT NULL PRIMARY KEY " + sortOrder + ", kv VARCHAR)"; |
| conn.createStatement().execute(ddl); |
| String dml = "UPSERT INTO " + reverseTest + " VALUES(?)"; |
| PreparedStatement stmt = conn.prepareStatement(dml); |
| stmt.setString(1, s); |
| stmt.execute(); |
| conn.commit(); |
| return reverseTest; |
| } |
| |
| private void testReverse(Connection conn, String s, String tableName) throws Exception { |
| StringBuilder buf = new StringBuilder(s); |
| String reverse = buf.reverse().toString(); |
| |
| ResultSet rs; |
| rs = conn.createStatement().executeQuery("SELECT reverse(pk) FROM " + tableName); |
| assertTrue(rs.next()); |
| assertEquals(reverse, rs.getString(1)); |
| assertFalse(rs.next()); |
| |
| PreparedStatement stmt = conn.prepareStatement( |
| "SELECT pk FROM " + tableName + " WHERE pk=reverse(?)"); |
| stmt.setString(1, reverse); |
| rs = stmt.executeQuery(); |
| assertTrue(rs.next()); |
| assertEquals(s, rs.getString(1)); |
| assertFalse(rs.next()); |
| } |
| |
| @Test |
| public void testSingleByteReverseAscending() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String s = "abc"; |
| String tableName = initTable(conn, "ASC", s); |
| testReverse(conn, s, tableName); |
| } |
| |
| @Test |
| public void testMultiByteReverseAscending() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String s = "ɚɦɰɸ"; |
| String tableName = initTable(conn, "DESC", s); |
| testReverse(conn, s, tableName); |
| } |
| |
| |
| @Test |
| public void testSingleByteReverseDecending() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String s = "abc"; |
| String tableName = initTable(conn, "DESC", s); |
| testReverse(conn, s, tableName); |
| } |
| |
| @Test |
| public void testMultiByteReverseDecending() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String s = "ɚɦɰɸ"; |
| String tableName = initTable(conn, "ASC", s); |
| testReverse(conn, s, tableName); |
| } |
| |
| @Test |
| public void testNullReverse() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String s = "abc"; |
| String tableName = initTable(conn, "ASC", s); |
| |
| ResultSet rs; |
| rs = conn.createStatement().executeQuery("SELECT reverse(kv) FROM " + tableName); |
| assertTrue(rs.next()); |
| assertNull(rs.getString(1)); |
| assertFalse(rs.next()); |
| } |
| |
| } |