/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.test.db;
import java.io.File;
import java.io.RandomAccessFile;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import org.h2.constant.ErrorCode;
import org.h2.store.FileLister;
import org.h2.store.fs.FileSystem;
import org.h2.test.TestBase;
/**
* Test for the read-only database feature.
*/
public class TestReadOnly extends TestBase {
/**
* Run just this test.
*
* @param a ignored
*/
public static void main(String... a) throws Exception {
TestBase.createCaller().init().test();
}
public void test() throws Exception {
if (config.memory) {
return;
}
testReadOnlyTempTableResult();
testReadOnlyConnect();
testReadOnlyDbCreate();
if (!config.googleAppEngine) {
testReadOnlyFiles(true);
}
testReadOnlyFiles(false);
deleteDb("readonly");
}
private void testReadOnlyTempTableResult() throws SQLException {
deleteDb("readonly");
Connection conn = getConnection("readonly");
Statement stat = conn.createStatement();
stat.execute("CREATE TABLE TEST(ID INT) AS SELECT X FROM SYSTEM_RANGE(1, 20)");
conn.close();
conn = getConnection("readonly;ACCESS_MODE_DATA=r;MAX_MEMORY_ROWS_DISTINCT=10");
stat = conn.createStatement();
stat.execute("SELECT DISTINCT ID FROM TEST");
conn.close();
}
private void testReadOnlyDbCreate() throws SQLException {
deleteDb("readonly");
Connection conn = getConnection("readonly");
conn.close();
conn = getConnection("readonly;ACCESS_MODE_DATA=r");
Statement stat = conn.createStatement();
assertThrows(ErrorCode.DATABASE_IS_READ_ONLY, stat).
execute("CREATE TABLE TEST(ID INT)");
assertThrows(ErrorCode.TABLE_OR_VIEW_NOT_FOUND_1, stat).
execute("SELECT * FROM TEST");
stat.execute("create local temporary linked table test(" +
"null, 'jdbc:h2:mem:test3', 'sa', 'sa', 'INFORMATION_SCHEMA.TABLES')");
ResultSet rs = stat.executeQuery("select * from test");
assertTrue(rs.next());
conn.close();
}
private void testReadOnlyFiles(boolean setReadOnly) throws Exception {
new File(System.getProperty("java.io.tmpdir")).mkdirs();
File f = File.createTempFile("test", "temp");
assertTrue(f.canWrite());
f.setReadOnly();
assertTrue(!f.canWrite());
f.delete();
f = File.createTempFile("test", "temp");
RandomAccessFile r = new RandomAccessFile(f, "rw");
r.write(1);
f.setReadOnly();
r.close();
assertTrue(!f.canWrite());
f.delete();
deleteDb("readonly");
Connection conn = getConnection("readonly");
Statement stat = conn.createStatement();
stat.execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR)");
stat.execute("INSERT INTO TEST VALUES(1, 'Hello')");
stat.execute("INSERT INTO TEST VALUES(2, 'World')");
assertTrue(!conn.isReadOnly());
conn.close();
if (setReadOnly) {
setReadOnly();
conn = getConnection("readonly");
} else {
conn = getConnection("readonly;ACCESS_MODE_DATA=r");
}
assertTrue(conn.isReadOnly());
stat = conn.createStatement();
stat.execute("SELECT * FROM TEST");
assertThrows(ErrorCode.DATABASE_IS_READ_ONLY, stat).
execute("DELETE FROM TEST");
conn.close();
if (setReadOnly) {
conn = getConnection("readonly;DB_CLOSE_DELAY=1");
} else {
conn = getConnection("readonly;DB_CLOSE_DELAY=1;ACCESS_MODE_DATA=r");
}
stat = conn.createStatement();
stat.execute("SELECT * FROM TEST");
assertThrows(ErrorCode.DATABASE_IS_READ_ONLY, stat).
execute("DELETE FROM TEST");
stat.execute("SET DB_CLOSE_DELAY=0");
conn.close();
}
private void setReadOnly() {
FileSystem fs = FileSystem.getInstance(getBaseDir());
ArrayList<String> list = FileLister.getDatabaseFiles(getBaseDir(), "readonly", true);
for (String fileName : list) {
fs.setReadOnly(fileName);
}
}
private void testReadOnlyConnect() throws SQLException {
deleteDb("readonly");
Connection conn = getConnection("readonly;OPEN_NEW=TRUE");
Statement stat = conn.createStatement();
stat.execute("create table test(id identity)");
stat.execute("insert into test select x from system_range(1, 11)");
assertThrows(ErrorCode.DATABASE_ALREADY_OPEN_1, this).
getConnection("readonly;ACCESS_MODE_DATA=r;OPEN_NEW=TRUE");
conn.close();
deleteDb("readonly");
}
}