--no commit message

--no commit message

h2/build.xml

@@ -161,7 +161,7 @@
 			<fileset dir="src/docsrc" includes="index.html"/>
 			<fileset dir="src/docsrc" includes="html/**/*" excludes="**/*.jsp" />
 		</copy>
-		<java classname="org.h2.tools.code.CheckPackageHtml" classpath="bin"/>
+		<java classname="org.h2.tools.code.CheckJavadoc" classpath="bin"/>
 		<java classname="org.h2.tools.code.CheckTextFiles" classpath="bin"/>
 		<java classname="org.h2.tools.doc.GenerateDoc" classpath="bin">
 			<arg line="-in src/docsrc/html -out docs/html"/>

h2/src/main/org/h2/constant/SysProperties.java

@@ -126,4 +126,6 @@ public class SysProperties {
     public static String getBaseDir() {
         return baseDir;
     }
+
+    public static final int CACHE_SIZE_INDEX_DEFAULT = CACHE_SIZE_DEFAULT >> CACHE_SIZE_INDEX_SHIFT;
 }

h2/src/main/org/h2/engine/Constants.java

@@ -4,7 +4,6 @@
  */
 package org.h2.engine;
 
-import org.h2.constant.SysProperties;
 
 /*
  * Release checklist
@@ -176,5 +175,4 @@ public class Constants {
     public static final int ENCRYPTION_KEY_HASH_ITERATIONS = 1024;
     public static final String SCRIPT_SQL = "script.sql";
     public static final int CACHE_MIN_RECORDS = 16;
-    public static final int CACHE_SIZE_INDEX_DEFAULT = SysProperties.CACHE_SIZE_DEFAULT >> SysProperties.CACHE_SIZE_INDEX_SHIFT;
 }

h2/src/main/org/h2/engine/Database.java

@@ -390,7 +390,7 @@ public class Database implements DataHandler {
 
     private void openFileIndex() throws SQLException {
         fileIndex = new DiskFile(this, databaseName + Constants.SUFFIX_INDEX_FILE, accessModeData, false,
-                logIndexChanges, Constants.CACHE_SIZE_INDEX_DEFAULT);
+                logIndexChanges, SysProperties.CACHE_SIZE_INDEX_DEFAULT);
     }
 
     public DataPage getDataPage() {

h2/src/main/org/h2/jdbc/JdbcBatchUpdateException.java

@@ -9,10 +9,13 @@ import java.io.PrintWriter;
 import java.sql.BatchUpdateException;
 import java.sql.SQLException;
 
+/**
+ * Represents a batch update database exception.
+ */
 public class JdbcBatchUpdateException extends BatchUpdateException {
 
     private static final long serialVersionUID = 9006432914018679675L;
-    
+
     /**
      * INTERNAL
      */

h2/src/main/org/h2/jdbc/JdbcSQLException.java

@@ -11,7 +11,7 @@ import java.sql.SQLException;
 import org.h2.engine.Constants;
 
 /**
- * Represents an exception.
+ * Represents a database exception.
  */
 public class JdbcSQLException extends SQLException {
 

h2/src/main/org/h2/store/fs/FileObject.java

@@ -7,7 +7,7 @@ package org.h2.store.fs;
 import java.io.IOException;
 
 /**
- * This interface represents a RandomAccessFile.
+ * This interface represents a random access file.
  */
 public interface FileObject {
 

h2/src/main/org/h2/store/fs/FileObjectDisk.java

@@ -11,7 +11,7 @@ import java.io.RandomAccessFile;
 import org.h2.util.FileUtils;
 
 /**
- * This class is extends a RandomAccessFile.
+ * This class is extends a java.io.RandomAccessFile.
  */
 public class FileObjectDisk extends RandomAccessFile implements FileObject {
 

h2/src/test/org/h2/test/TestAll.java

@@ -74,10 +74,10 @@ import org.h2.test.synth.TestCrashAPI;
 import org.h2.test.synth.TestHaltApp;
 import org.h2.test.synth.TestJoin;
 import org.h2.test.synth.TestKill;
-import org.h2.test.synth.TestMulti;
 import org.h2.test.synth.TestRandomSQL;
-import org.h2.test.synth.TestSynth;
 import org.h2.test.synth.TestTimer;
+import org.h2.test.synth.sql.TestSynth;
+import org.h2.test.synth.thread.TestMulti;
 import org.h2.test.unit.TestBitField;
 import org.h2.test.unit.TestCache;
 import org.h2.test.unit.TestCompress;
@@ -149,7 +149,6 @@ java org.h2.test.TestAll timer
 
 /*
 
-check no more @author
 
 staging.trace.db.gz
 
@@ -160,7 +159,8 @@ http://java.sun.com/j2se/1.4.2/docs/guide/jdbc/getstart/callablestatement.html#1
 -Djboss.bind.address=<ip_address>
 -Dh2.bindAddress=...
 
-documentation: package.html: write test (enforce one package.html where there is a .java file)
+    [echo] Java version is 1.6 but source code is switched to 1.4.
+    [echo] Run ant codeswitchJdk... first.
 
 write to the db file what version was used to create a database
 

h2/src/test/org/h2/test/jdbc/TestCallableStatement.java

@@ -11,6 +11,9 @@ import java.sql.Statement;
 
 import org.h2.test.TestBase;
 
+/**
+ * Tests for the CallableStatement class.
+ */
 public class TestCallableStatement extends TestBase {
 
     public void test() throws Exception {
@@ -19,7 +22,7 @@ public class TestCallableStatement extends TestBase {
         testPrepare(conn);
         conn.close();
     }
-    
+
     private void testPrepare(Connection conn) throws Exception {
         Statement stat = conn.createStatement();
         CallableStatement call;

h2/src/test/org/h2/test/jdbc/TestCancel.java

 /*
- * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html). 
- * Initial Developer: H2 Group 
+ * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+ * Initial Developer: H2 Group
  */
 package org.h2.test.jdbc;
 
@@ -12,10 +12,10 @@ import java.sql.Statement;
 
 import org.h2.test.TestBase;
 
+
 /**
- * @author Thomas
+ * Tests Statement.cancel
  */
-
 public class TestCancel extends TestBase {
 
     class CancelThread extends Thread {

h2/src/test/org/h2/test/jdbc/TestDataSource.java

@@ -16,19 +16,22 @@ import javax.transaction.xa.Xid;
 import org.h2.jdbcx.JdbcDataSource;
 import org.h2.test.TestBase;
 
+/**
+ * Tests DataSource and XAConnection.
+ */
 public class TestDataSource extends TestBase {
 
     // public static void main(String[] args) throws Exception {
-    //        
+    //
     // // first, need to start on the command line:
     // // rmiregistry 1099
-    //        
+    //
     // // System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
     // "com.sun.jndi.ldap.LdapCtxFactory");
     // System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
     // "com.sun.jndi.rmi.registry.RegistryContextFactory");
     // System.setProperty(Context.PROVIDER_URL, "rmi://localhost:1099");
-    //        
+    //
     // JdbcDataSource ds = new JdbcDataSource();
     // ds.setURL("jdbc:h2:test");
     // ds.setUser("test");
@@ -36,7 +39,7 @@ public class TestDataSource extends TestBase {
     //
     // Context ctx = new InitialContext();
     // ctx.bind("jdbc/test", ds);
-    //        
+    //
     // DataSource ds2 = (DataSource)ctx.lookup("jdbc/test");
     // Connection conn = ds2.getConnection();
     // conn.close();

h2/src/test/org/h2/test/jdbc/TestDatabaseEventListener.java

@@ -13,8 +13,11 @@ import java.util.Properties;
 import org.h2.api.DatabaseEventListener;
 import org.h2.test.TestBase;
 
+/**
+ * Tests the DatabaseEventListener interface.
+ */
 public class TestDatabaseEventListener extends TestBase implements DatabaseEventListener {
-    
+
     private boolean calledOpened, calledClosingDatabase, calledScan;
 
     public void test() throws Exception {
@@ -22,7 +25,7 @@ public class TestDatabaseEventListener extends TestBase implements DatabaseEvent
         testCloseLog0(false);
         testCloseLog0(true);
     }
-    
+
     private void testCloseLog0(boolean shutdown) throws Exception {
         if (config.memory) {
             return;
@@ -52,7 +55,7 @@ public class TestDatabaseEventListener extends TestBase implements DatabaseEvent
             check(!l.calledScan);
         }
     }
-    
+
     private void testCalled() throws Exception {
         Properties p = new Properties();
         p.setProperty("user", "sa");
@@ -65,7 +68,7 @@ public class TestDatabaseEventListener extends TestBase implements DatabaseEvent
         check(l.calledOpened);
         check(l.calledClosingDatabase);
     }
-    
+
     public void closingDatabase() {
         calledClosingDatabase = true;
     }

h2/src/test/org/h2/test/jdbc/TestManyJdbcObjects.java

 /*
- * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html). 
- * Initial Developer: H2 Group 
+ * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+ * Initial Developer: H2 Group
  */
 package org.h2.test.jdbc;
 
@@ -13,6 +13,9 @@ import java.sql.Statement;
 import org.h2.constant.SysProperties;
 import org.h2.test.TestBase;
 
+/**
+ * Tests the server by creating many JDBC objects (result sets and so on).
+ */
 public class TestManyJdbcObjects extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/jdbc/TestMetaData.java

@@ -15,6 +15,9 @@ import org.h2.engine.Constants;
 import org.h2.test.TestBase;
 import org.h2.value.DataType;
 
+/**
+ * Test for the DatabaseMetaData implementation.
+ */
 public class TestMetaData extends TestBase {
 
     Connection conn;

h2/src/test/org/h2/test/jdbc/TestNativeSQL.java

 /*
- * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html). 
- * Initial Developer: H2 Group 
+ * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+ * Initial Developer: H2 Group
  */
 package org.h2.test.jdbc;
 
@@ -11,9 +11,8 @@ import java.sql.Statement;
 import org.h2.test.TestBase;
 
 /**
- * @author Thomas
+ * Tests the Connection.nativeSQL method.
  */
-
 public class TestNativeSQL extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/jdbc/TestPreparedStatement.java

@@ -20,6 +20,9 @@ import java.sql.Types;
 
 import org.h2.test.TestBase;
 
+/**
+ * Tests for the PreparedStatement implementation.
+ */
 public class TestPreparedStatement extends TestBase {
 
     static final int LOB_SIZE = 4000, LOB_SIZE_BIG = 512 * 1024;
@@ -33,7 +36,7 @@ public class TestPreparedStatement extends TestBase {
         testPrepareRecompile(conn);
         testMaxRowsChange(conn);
         testUnknownDataType(conn);
-        testCancelReuse(conn);        
+        testCancelReuse(conn);
         testCoalesce(conn);
         testPreparedStatementMetaData(conn);
         testDate(conn);
@@ -54,14 +57,14 @@ public class TestPreparedStatement extends TestBase {
         testParameterMetaData(conn);
         conn.close();
     }
-    
+
     private void testTempView(Connection conn) throws Exception {
         Statement stat = conn.createStatement();
         PreparedStatement prep;
         stat.execute("CREATE TABLE TEST(FIELD INT PRIMARY KEY)");
         stat.execute("INSERT INTO TEST VALUES(1)");
         stat.execute("INSERT INTO TEST VALUES(2)");
-        prep = conn.prepareStatement("select FIELD FROM " 
+        prep = conn.prepareStatement("select FIELD FROM "
                 + "(select FIELD FROM (SELECT FIELD  FROM TEST WHERE FIELD = ?) AS T2 "
                 + "WHERE T2.FIELD = ?) AS T3 WHERE T3.FIELD = ?");
         prep.setInt(1, 1);
@@ -78,12 +81,12 @@ public class TestPreparedStatement extends TestBase {
         check(2, rs.getInt(1));
         stat.execute("DROP TABLE TEST");
     }
-    
+
     private void testInsertFunction(Connection conn) throws Exception {
         Statement stat = conn.createStatement();
         PreparedStatement prep;
         ResultSet rs;
-        
+
         stat.execute("CREATE TABLE TEST(ID INT, H BINARY)");
         prep = conn.prepareStatement("INSERT INTO TEST VALUES(?, HASH('SHA256', STRINGTOUTF8(?), 5))");
         prep.setInt(1, 1);
@@ -95,15 +98,15 @@ public class TestPreparedStatement extends TestBase {
         rs = stat.executeQuery("SELECT COUNT(DISTINCT H) FROM TEST");
         rs.next();
         check(rs.getInt(1), 2);
-        
+
         stat.execute("DROP TABLE TEST");
     }
-    
+
     private void testPrepareRecompile(Connection conn) throws Exception {
         Statement stat = conn.createStatement();
         PreparedStatement prep;
         ResultSet rs;
-        
+
         prep = conn.prepareStatement("SELECT COUNT(*) FROM DUAL WHERE ? IS NULL");
         prep.setString(1, null);
         prep.executeQuery();
@@ -131,9 +134,9 @@ public class TestPreparedStatement extends TestBase {
         rs.next();
         check(rs.getInt(1), 3);
         stat.execute("DROP TABLE t1, t2");
-        
+
     }
-    
+
     private void testMaxRowsChange(Connection conn) throws Exception {
         PreparedStatement prep = conn.prepareStatement("SELECT * FROM SYSTEM_RANGE(1, 100)");
         ResultSet rs;
@@ -146,7 +149,7 @@ public class TestPreparedStatement extends TestBase {
             checkFalse(rs.next());
         }
     }
-    
+
     private void testUnknownDataType(Connection conn) throws Exception {
         try {
             PreparedStatement prep = conn.prepareStatement(
@@ -165,7 +168,7 @@ public class TestPreparedStatement extends TestBase {
         prep.setInt(2, 2);
         prep.execute();
     }
-    
+
     private void testCancelReuse(Connection conn) throws Exception {
         conn.createStatement().execute("CREATE ALIAS YIELD FOR \"java.lang.Thread.yield\"");
         final PreparedStatement prep = conn.prepareStatement("SELECT YIELD() FROM SYSTEM_RANGE(1, 1000000) LIMIT ?");
@@ -192,7 +195,7 @@ public class TestPreparedStatement extends TestBase {
         check(rs.getInt(1), 0);
         checkFalse(rs.next());
     }
-    
+
     private void testCoalesce(Connection conn) throws Exception {
         Statement stat = conn.createStatement();
         stat.executeUpdate("create table test(tm timestamp)");

h2/src/test/org/h2/test/jdbc/TestResultSet.java

@@ -25,6 +25,9 @@ import java.util.TimeZone;
 
 import org.h2.test.TestBase;
 
+/**
+ * Tests for the ResultSet implementation.
+ */
 public class TestResultSet extends TestBase {
     Connection conn;
     Statement stat;

h2/src/test/org/h2/test/jdbc/TestStatement.java

@@ -14,6 +14,9 @@ import org.h2.constant.SysProperties;
 import org.h2.jdbc.JdbcStatement;
 import org.h2.test.TestBase;
 
+/**
+ * Tests for the Statement implementation.
+ */
 public class TestStatement extends TestBase {
 
     Connection conn;

h2/src/test/org/h2/test/jdbc/TestTransactionIsolation.java

@@ -9,6 +9,9 @@ import java.sql.SQLException;
 
 import org.h2.test.TestBase;
 
+/**
+ * Transaction isolation level tests.
+ */
 public class TestTransactionIsolation extends TestBase {
 
     Connection conn1, conn2;

h2/src/test/org/h2/test/jdbc/TestUpdatableResultSet.java

@@ -19,6 +19,9 @@ import java.sql.Timestamp;
 
 import org.h2.test.TestBase;
 
+/**
+ * Updatable result set tests.
+ */
 public class TestUpdatableResultSet extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/jdbc/TestXASimple.java

@@ -8,9 +8,12 @@ import java.sql.Connection;
 
 import org.h2.jdbcx.JdbcDataSource;
 
+/**
+ * A simple XA test.
+ */
 public class TestXASimple {
 
-    int notYetImplemented;
+    private int notYetImplemented;
 
     public static void main(String[] args) throws Exception {
         Class.forName("org.h2.Driver");

h2/src/test/org/h2/test/jdbc/TestZloty.java

@@ -12,6 +12,10 @@ import java.sql.SQLException;
 
 import org.h2.test.TestBase;
 
+/**
+ * Tests a custom BigDecimal implementation, as well
+ * as direct modification of a byte in a byte array.
+ */
 public class TestZloty extends TestBase {
 
     public void test() throws Exception {
@@ -61,7 +65,7 @@ public class TestZloty extends TestBase {
 
     /**
      * H2 destroyer application ;->
-     * 
+     *
      * @author Maciej Wegorkiewicz
      */
     private void testZloty() throws Exception {

h2/src/test/org/h2/test/jdbc/xa/TestXA.java

@@ -16,6 +16,9 @@ import org.h2.jdbcx.JdbcDataSource;
 import org.h2.test.TestBase;
 import org.h2.util.JdbcUtils;
 
+/**
+ * Basic XA tests.
+ */
 public class TestXA extends TestBase {
     private static final String DB_NAME1 = "xadb1";
     private static final String DB_NAME2 = "xadb2";
@@ -30,7 +33,7 @@ public class TestXA extends TestBase {
         deleteDb(baseDir, DB_NAME2);
         testXA(false);
     }
-    
+
     public static class MyXid implements Xid {
         private byte[] branchQualifier = new byte[1];
         private byte[] globalTransactionId = new byte[1];
@@ -43,8 +46,8 @@ public class TestXA extends TestBase {
         public byte[] getGlobalTransactionId() {
             return globalTransactionId;
         }
-    }    
-    
+    }
+
     private void testXAAutoCommit() throws Exception {
         JdbcDataSource ds = new JdbcDataSource();
         ds.setURL("jdbc:h2:mem:test");
@@ -58,7 +61,7 @@ public class TestXA extends TestBase {
         check(!c.getAutoCommit());
         c.close();
     }
-    
+
     private void testXA(boolean useOneDatabase) {
         XAConnection xaConn1 = null;
         XAConnection xaConn2 = null;

h2/src/test/org/h2/test/jdbc/xa/TestXid.java

@@ -9,6 +9,9 @@ import java.net.UnknownHostException;
 import java.text.NumberFormat;
 import javax.transaction.xa.Xid;
 
+/**
+ * A utility class for the basic XA test.
+ */
 public class TestXid implements Xid {
     private static final NumberFormat NF;
 
@@ -30,7 +33,7 @@ public class TestXid implements Xid {
     public static void main(String[] args) {
         new TestXid();
     }
-    
+
     public TestXid() {
         this(1);
     }

h2/src/test/org/h2/test/server/TestNestedLoop.java

@@ -11,6 +11,10 @@ import java.sql.Statement;
 
 import org.h2.test.TestBase;
 
+/**
+ * Tests remote JDBC access with nested loops.
+ * This is not allowed in some databases.
+ */
 public class TestNestedLoop extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/server/TestPgServer.java

@@ -16,6 +16,9 @@ import java.sql.Statement;
 import org.h2.test.TestBase;
 import org.h2.tools.Server;
 
+/**
+ * Tests the PostgreSQL server protocol compliant implementation.
+ */
 public class TestPgServer extends TestBase {
 
     public void test() throws Exception {
@@ -43,7 +46,7 @@ public class TestPgServer extends TestBase {
         }
         conn.close();
         conn = DriverManager.getConnection("jdbc:postgresql://localhost:5435/test", "sa", "sa");
-        stat = conn.createStatement();        
+        stat = conn.createStatement();
         stat.execute("create table test(id int primary key, name varchar)");
         PreparedStatement prep = conn.prepareStatement("insert into test values(?, ?)");
         ParameterMetaData meta = prep.getParameterMetaData();
@@ -92,7 +95,7 @@ public class TestPgServer extends TestBase {
         s = rs.getString(3);
         check(s, "PUBLIC");
         checkFalse(rs.next());
-        
+
         conn.setAutoCommit(false);
         stat.execute("delete from test");
         conn.rollback();
@@ -103,12 +106,12 @@ public class TestPgServer extends TestBase {
         check(1, rs.getInt(1));
         check("Hallo", rs.getString(2));
         checkFalse(rs.next());
-        
+
         rs = stat.executeQuery("select id, name, pg_get_userbyid(id) from information_schema.users order by id");
         rs.next();
         check(rs.getString(2), rs.getString(3));
         checkFalse(rs.next());
-        
+
 
         conn.close();
     }

h2/src/test/org/h2/test/server/TestWeb.java

@@ -7,6 +7,9 @@ package org.h2.test.server;
 import org.h2.test.TestBase;
 import org.h2.tools.Server;
 
+/**
+ * Tests the H2 Console application.
+ */
 public class TestWeb extends TestBase {
 
     public void test() throws Exception {
@@ -61,14 +64,14 @@ public class TestWeb extends TestBase {
         check(result.indexOf("id") >= 0);
         result = client.get(url, "autoCompleteList.do?query=select id x from test te where t");
         check(result.indexOf("te") >= 0);
-        
+
         result = client.get(url, "query.do?sql=delete from test");
         result = client.get(url, "query.do?sql=@LOOP 10 @STATEMENT insert into test values(?, 'Hello')");
         result = client.get(url, "query.do?sql=select * from test");
         check(result.indexOf("8") >= 0);
         result = client.get(url, "query.do?sql=@EDIT select * from test");
         check(result.indexOf("editRow") >= 0);
-        
+
         result = client.get(url, "query.do?sql=@AUTOCOMMIT TRUE");
         result = client.get(url, "query.do?sql=@AUTOCOMMIT FALSE");
         result = client.get(url, "query.do?sql=@TRANSACTION_ISOLATION");
@@ -86,10 +89,10 @@ public class TestWeb extends TestBase {
         result = client.get(url, "query.do?sql=@MEMORY");
         check(result.indexOf("Used") >= 0);
         result = client.get(url, "query.do?sql=@UDTS");
-        
+
         result = client.get(url, "query.do?sql=@INFO");
         check(result.indexOf("getCatalog") >= 0);
-        
+
         result = client.get(url, "logout.do");
         result = client.get(url, "settingRemove.do?name=_test_");
         server.stop();

h2/src/test/org/h2/test/server/WebClient.java

@@ -12,10 +12,13 @@ import java.net.URL;
 
 import org.h2.util.IOUtils;
 
+/**
+ * A simple web browser simulator.
+ */
 public class WebClient {
-    
+
     private String sessionId;
-    
+
     String get(String url) throws IOException {
         HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
         connection.setRequestMethod("GET");
@@ -30,7 +33,7 @@ public class WebClient {
         connection.disconnect();
         return result;
     }
-    
+
     void readSessionId(String result) {
         int idx = result.indexOf("jsessionid=");
         String id = result.substring(idx + "jsessionid=".length());
@@ -59,5 +62,5 @@ public class WebClient {
         url += page;
         return get(url);
     }
-    
+
 }

h2/src/test/org/h2/test/synth/OutputCatcher.java

@@ -10,6 +10,9 @@ import java.util.LinkedList;
 
 import org.h2.util.IOUtils;
 
+/**
+ * Catches the output of another process.
+ */
 class OutputCatcher extends Thread {
     private InputStream in;
     private LinkedList list = new LinkedList();

h2/src/test/org/h2/test/synth/TestBtreeIndex.java

@@ -15,6 +15,9 @@ import java.util.Random;
 import org.h2.test.TestBase;
 import org.h2.tools.DeleteDbFiles;
 
+/**
+ * A b-tree index test.
+ */
 public class TestBtreeIndex extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/synth/TestCrashAPI.java

@@ -31,10 +31,12 @@ import org.h2.jdbc.JdbcConnection;
 import org.h2.test.TestAll;
 import org.h2.test.TestBase;
 import org.h2.test.db.TestScript;
+import org.h2.test.synth.sql.RandomGen;
 import org.h2.util.RandomUtils;
 
 /**
- * This is sometimes called 'Fuzz Testing'
+ * A test that calls random methods with random parameters from JDBC objects.
+ * This is sometimes called 'Fuzz Testing'.
  */
 public class TestCrashAPI extends TestBase {
     public static final Class[] INTERFACES = { Connection.class, PreparedStatement.class, Statement.class,

h2/src/test/org/h2/test/synth/TestHalt.java

-/*
- * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
- * Initial Developer: H2 Group
- */
-package org.h2.test.synth;
-
-import java.io.File;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.PrintWriter;
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.SQLException;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.Random;
-
-import org.h2.test.TestAll;
-import org.h2.test.TestBase;
-import org.h2.tools.Backup;
-import org.h2.tools.DeleteDbFiles;
-import org.h2.util.IOUtils;
-
-public abstract class TestHalt extends TestBase {
-
-    private SimpleDateFormat dateFormat = new SimpleDateFormat("MM-dd HH:mm:ss ");
-    protected static final int OP_INSERT = 1, OP_DELETE = 2, OP_UPDATE = 4, OP_SELECT = 8;
-    protected static final int FLAG_NO_DELAY = 1, FLAG_LOBS = 2;
-    protected int operations, flags, value;
-    protected Connection conn;
-    protected Random random = new Random();
-    private int errorId;
-    private int sequenceId;
-    private static final String DATABASE_NAME = "halt";
-    static final String DIR = "dataHalt";
-    private static final String TRACE_FILE_NAME = "haltTrace.trace.db";
-
-    abstract void testInit() throws Exception;
-
-    abstract void testCheckAfterCrash() throws Exception;
-
-    abstract void testWaitAfterAppStart() throws Exception;
-
-    abstract void appStart() throws Exception;
-
-    abstract void appRun() throws Exception;
-
-    public void test() throws Exception {
-        for (int i = 0;; i++) {
-            operations = OP_INSERT | i;
-            flags = i >> 4;
-            // flags |= FLAG_NO_DELAY; // | FLAG_LOBS;
-            try {
-                runTest();
-            } catch (Throwable t) {
-                System.out.println("Error: " + t);
-                t.printStackTrace();
-            }
-        }
-    }
-
-    Connection getConnection() throws Exception {
-        Class.forName("org.h2.Driver");
-        return DriverManager.getConnection("jdbc:h2:" + baseDir + "/halt", "sa", "sa");
-    }
-
-    protected void start(String[] args) throws Exception {
-        if (args.length == 0) {
-            runTest();
-        } else {
-            operations = Integer.parseInt(args[0]);
-            flags = Integer.parseInt(args[1]);
-            value = Integer.parseInt(args[2]);
-            runRandom();
-        }
-    }
-
-    private void runRandom() throws Exception {
-        connect();
-        try {
-            traceOperation("connected, operations:" + operations + " flags:" + flags + " value:" + value);
-            appStart();
-            System.out.println("READY");
-            System.out.println("READY");
-            System.out.println("READY");
-            appRun();
-            traceOperation("done");
-        } catch (Exception e) {
-            trace("run", e);
-        }
-        disconnect();
-    }
-
-    private void connect() throws Exception {
-        try {
-            traceOperation("connecting");
-            conn = getConnection();
-        } catch (Exception e) {
-            trace("connect", e);
-            e.printStackTrace();
-            throw e;
-        }
-    }
-
-    protected void traceOperation(String s) {
-        trace(s, null);
-    }
-
-    protected void trace(String s, Exception e) {
-        FileWriter writer = null;
-        try {
-            File f = new File(baseDir + "/" + TRACE_FILE_NAME);
-            f.getParentFile().mkdirs();
-            writer = new FileWriter(f, true);
-            PrintWriter w = new PrintWriter(writer);
-            s = dateFormat.format(new Date()) + ": " + s;
-            w.println(s);
-            if (e != null) {
-                e.printStackTrace(w);
-            }
-        } catch (IOException e2) {
-            e2.printStackTrace();
-        } finally {
-            IOUtils.closeSilently(writer);
-        }
-    }
-
-    private void runTest() throws Exception {
-        traceOperation("delete database -----------------------------");
-        DeleteDbFiles.execute(baseDir, DATABASE_NAME, true);
-        new File(baseDir + "/" + TRACE_FILE_NAME).delete();
-
-        connect();
-        testInit();
-        disconnect();
-        for (int i = 0; i < 10; i++) {
-            traceOperation("backing up " + sequenceId);
-            Backup.execute(baseDir + "/haltSeq" + sequenceId + ".zip", baseDir, null, true);
-            sequenceId++;
-            // int operations = OP_INSERT;
-            // OP_DELETE = 1, OP_UPDATE = 2, OP_SELECT = 4;
-            // int flags = FLAG_NODELAY;
-            // FLAG_NO_DELAY = 1, FLAG_AUTO_COMMIT = 2, FLAG_SMALL_CACHE = 4;
-            int value = random.nextInt(1000);
-            // for Derby and HSQLDB
-            // String classPath = "-cp
-            // .;D:/data/java/hsqldb.jar;D:/data/java/derby.jar";
-            String classPath = "";
-            String command = "java " + classPath + " " + getClass().getName() + " " + operations + " " + flags + " "
-                    + value;
-            traceOperation("start: " + command);
-            Process p = Runtime.getRuntime().exec(command);
-            InputStream in = p.getInputStream();
-            OutputCatcher catcher = new OutputCatcher(in);
-            catcher.start();
-            String s = catcher.readLine(5000);
-            if (s == null) {
-                throw new IOException("No reply from process, command: " + command);
-            } else if (s.startsWith("READY")) {
-                traceOperation("got reply: " + s);
-            }
-            testWaitAfterAppStart();
-            p.destroy();
-            try {
-                traceOperation("backing up " + sequenceId);
-                Backup.execute(baseDir + "/haltSeq" + sequenceId + ".zip", baseDir, null, true);
-                // new File(BASE_DIR + "/haltSeq" + (sequenceId-20) +
-                // ".zip").delete();
-                connect();
-                testCheckAfterCrash();
-            } catch (Exception e) {
-                File zip = new File(baseDir + "/haltSeq" + sequenceId + ".zip");
-                File zipId = new File(baseDir + "/haltSeq" + sequenceId + "-" + errorId + ".zip");
-                zip.renameTo(zipId);
-                printTime("ERROR: " + sequenceId + " " + errorId + " " + e.toString());
-                e.printStackTrace();
-                errorId++;
-            } finally {
-                sequenceId++;
-                disconnect();
-            }
-        }
-    }
-
-    protected void disconnect() {
-        try {
-            traceOperation("disconnect");
-            conn.close();
-        } catch (Exception e) {
-            trace("disconnect", e);
-        }
-    }
-
-    public Connection getConnectionHSQLDB() throws Exception {
-        File lock = new File("test.lck");
-        while (lock.exists()) {
-            lock.delete();
-            System.gc();
-        }
-        Class.forName("org.hsqldb.jdbcDriver");
-        return DriverManager.getConnection("jdbc:hsqldb:test", "sa", "");
-    }
-
-    public Connection getConnectionDerby() throws Exception {
-        File lock = new File("test3/db.lck");
-        while (lock.exists()) {
-            lock.delete();
-            System.gc();
-        }
-        Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
-        try {
-            return DriverManager.getConnection("jdbc:derby:test3;create=true", "sa", "sa");
-        } catch (SQLException e) {
-            Exception e2 = e;
-            do {
-                e.printStackTrace();
-                e = e.getNextException();
-            } while (e != null);
-            throw e2;
-        }
-    }
-
-    public void disconnectHSQLDB() {
-        try {
-            conn.createStatement().execute("SHUTDOWN");
-        } catch (Exception e) {
-            // ignore
-        }
-        // super.disconnect();
-    }
-
-    public void disconnectDerby() {
-        // super.disconnect();
-        try {
-            Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
-            DriverManager.getConnection("jdbc:derby:;shutdown=true", "sa", "sa");
-        } catch (Exception e) {
-            // ignore
-        }
-    }
-
-    protected String getRandomString(int len) {
-        StringBuffer buff = new StringBuffer();
-        for (int i = 0; i < len; i++) {
-            buff.append('a' + random.nextInt(20));
-        }
-        return buff.toString();
-    }
-
-    public TestBase init(TestAll conf) throws Exception {
-        super.init(conf);
-        baseDir = DIR;
-        return this;
-    }
-
-}
+/*
+ * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+ * Initial Developer: H2 Group
+ */
+package org.h2.test.synth;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Random;
+
+import org.h2.test.TestAll;
+import org.h2.test.TestBase;
+import org.h2.tools.Backup;
+import org.h2.tools.DeleteDbFiles;
+import org.h2.util.IOUtils;
+
+/**
+ * Tests database recovery by destroying a process that writes to the database.
+ */
+public abstract class TestHalt extends TestBase {
+
+    private SimpleDateFormat dateFormat = new SimpleDateFormat("MM-dd HH:mm:ss ");
+    protected static final int OP_INSERT = 1, OP_DELETE = 2, OP_UPDATE = 4, OP_SELECT = 8;
+    protected static final int FLAG_NO_DELAY = 1, FLAG_LOBS = 2;
+    protected int operations, flags, value;
+    protected Connection conn;
+    protected Random random = new Random();
+    private int errorId;
+    private int sequenceId;
+    private static final String DATABASE_NAME = "halt";
+    static final String DIR = "dataHalt";
+    private static final String TRACE_FILE_NAME = "haltTrace.trace.db";
+
+    abstract void testInit() throws Exception;
+
+    abstract void testCheckAfterCrash() throws Exception;
+
+    abstract void testWaitAfterAppStart() throws Exception;
+
+    abstract void appStart() throws Exception;
+
+    abstract void appRun() throws Exception;
+
+    public void test() throws Exception {
+        for (int i = 0;; i++) {
+            operations = OP_INSERT | i;
+            flags = i >> 4;
+            // flags |= FLAG_NO_DELAY; // | FLAG_LOBS;
+            try {
+                runTest();
+            } catch (Throwable t) {
+                System.out.println("Error: " + t);
+                t.printStackTrace();
+            }
+        }
+    }
+
+    Connection getConnection() throws Exception {
+        Class.forName("org.h2.Driver");
+        return DriverManager.getConnection("jdbc:h2:" + baseDir + "/halt", "sa", "sa");
+    }
+
+    protected void start(String[] args) throws Exception {
+        if (args.length == 0) {
+            runTest();
+        } else {
+            operations = Integer.parseInt(args[0]);
+            flags = Integer.parseInt(args[1]);
+            value = Integer.parseInt(args[2]);
+            runRandom();
+        }
+    }
+
+    private void runRandom() throws Exception {
+        connect();
+        try {
+            traceOperation("connected, operations:" + operations + " flags:" + flags + " value:" + value);
+            appStart();
+            System.out.println("READY");
+            System.out.println("READY");
+            System.out.println("READY");
+            appRun();
+            traceOperation("done");
+        } catch (Exception e) {
+            trace("run", e);
+        }
+        disconnect();
+    }
+
+    private void connect() throws Exception {
+        try {
+            traceOperation("connecting");
+            conn = getConnection();
+        } catch (Exception e) {
+            trace("connect", e);
+            e.printStackTrace();
+            throw e;
+        }
+    }
+
+    protected void traceOperation(String s) {
+        trace(s, null);
+    }
+
+    protected void trace(String s, Exception e) {
+        FileWriter writer = null;
+        try {
+            File f = new File(baseDir + "/" + TRACE_FILE_NAME);
+            f.getParentFile().mkdirs();
+            writer = new FileWriter(f, true);
+            PrintWriter w = new PrintWriter(writer);
+            s = dateFormat.format(new Date()) + ": " + s;
+            w.println(s);
+            if (e != null) {
+                e.printStackTrace(w);
+            }
+        } catch (IOException e2) {
+            e2.printStackTrace();
+        } finally {
+            IOUtils.closeSilently(writer);
+        }
+    }
+
+    private void runTest() throws Exception {
+        traceOperation("delete database -----------------------------");
+        DeleteDbFiles.execute(baseDir, DATABASE_NAME, true);
+        new File(baseDir + "/" + TRACE_FILE_NAME).delete();
+
+        connect();
+        testInit();
+        disconnect();
+        for (int i = 0; i < 10; i++) {
+            traceOperation("backing up " + sequenceId);
+            Backup.execute(baseDir + "/haltSeq" + sequenceId + ".zip", baseDir, null, true);
+            sequenceId++;
+            // int operations = OP_INSERT;
+            // OP_DELETE = 1, OP_UPDATE = 2, OP_SELECT = 4;
+            // int flags = FLAG_NODELAY;
+            // FLAG_NO_DELAY = 1, FLAG_AUTO_COMMIT = 2, FLAG_SMALL_CACHE = 4;
+            int value = random.nextInt(1000);
+            // for Derby and HSQLDB
+            // String classPath = "-cp
+            // .;D:/data/java/hsqldb.jar;D:/data/java/derby.jar";
+            String classPath = "";
+            String command = "java " + classPath + " " + getClass().getName() + " " + operations + " " + flags + " "
+                    + value;
+            traceOperation("start: " + command);
+            Process p = Runtime.getRuntime().exec(command);
+            InputStream in = p.getInputStream();
+            OutputCatcher catcher = new OutputCatcher(in);
+            catcher.start();
+            String s = catcher.readLine(5000);
+            if (s == null) {
+                throw new IOException("No reply from process, command: " + command);
+            } else if (s.startsWith("READY")) {
+                traceOperation("got reply: " + s);
+            }
+            testWaitAfterAppStart();
+            p.destroy();
+            try {
+                traceOperation("backing up " + sequenceId);
+                Backup.execute(baseDir + "/haltSeq" + sequenceId + ".zip", baseDir, null, true);
+                // new File(BASE_DIR + "/haltSeq" + (sequenceId-20) +
+                // ".zip").delete();
+                connect();
+                testCheckAfterCrash();
+            } catch (Exception e) {
+                File zip = new File(baseDir + "/haltSeq" + sequenceId + ".zip");
+                File zipId = new File(baseDir + "/haltSeq" + sequenceId + "-" + errorId + ".zip");
+                zip.renameTo(zipId);
+                printTime("ERROR: " + sequenceId + " " + errorId + " " + e.toString());
+                e.printStackTrace();
+                errorId++;
+            } finally {
+                sequenceId++;
+                disconnect();
+            }
+        }
+    }
+
+    protected void disconnect() {
+        try {
+            traceOperation("disconnect");
+            conn.close();
+        } catch (Exception e) {
+            trace("disconnect", e);
+        }
+    }
+
+    public Connection getConnectionHSQLDB() throws Exception {
+        File lock = new File("test.lck");
+        while (lock.exists()) {
+            lock.delete();
+            System.gc();
+        }
+        Class.forName("org.hsqldb.jdbcDriver");
+        return DriverManager.getConnection("jdbc:hsqldb:test", "sa", "");
+    }
+
+    public Connection getConnectionDerby() throws Exception {
+        File lock = new File("test3/db.lck");
+        while (lock.exists()) {
+            lock.delete();
+            System.gc();
+        }
+        Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
+        try {
+            return DriverManager.getConnection("jdbc:derby:test3;create=true", "sa", "sa");
+        } catch (SQLException e) {
+            Exception e2 = e;
+            do {
+                e.printStackTrace();
+                e = e.getNextException();
+            } while (e != null);
+            throw e2;
+        }
+    }
+
+    public void disconnectHSQLDB() {
+        try {
+            conn.createStatement().execute("SHUTDOWN");
+        } catch (Exception e) {
+            // ignore
+        }
+        // super.disconnect();
+    }
+
+    public void disconnectDerby() {
+        // super.disconnect();
+        try {
+            Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
+            DriverManager.getConnection("jdbc:derby:;shutdown=true", "sa", "sa");
+        } catch (Exception e) {
+            // ignore
+        }
+    }
+
+    protected String getRandomString(int len) {
+        StringBuffer buff = new StringBuffer();
+        for (int i = 0; i < len; i++) {
+            buff.append('a' + random.nextInt(20));
+        }
+        return buff.toString();
+    }
+
+    public TestBase init(TestAll conf) throws Exception {
+        super.init(conf);
+        baseDir = DIR;
+        return this;
+    }
+
+}

h2/src/test/org/h2/test/synth/TestHaltApp.java

@@ -9,6 +9,9 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 
+/**
+ * The application code for the {@link TestHalt} application.
+ */
 public class TestHaltApp extends TestHalt {
 
     private int rowCount;

h2/src/test/org/h2/test/synth/TestJoin.java

@@ -18,6 +18,9 @@ import java.util.Random;
 import org.h2.test.TestBase;
 import org.h2.util.StringUtils;
 
+/**
+ * A test that runs random join statements against two databases and compares the results.
+ */
 public class TestJoin extends TestBase {
 
     private ArrayList connections = new ArrayList();
@@ -54,18 +57,18 @@ public class TestJoin extends TestBase {
         // connections.add(c2);
 
         /*
-        DROP TABLE ONE; 
-        DROP TABLE TWO; 
-        CREATE TABLE ONE(A INT PRIMARY KEY, B INT); 
-        INSERT INTO ONE VALUES(0, NULL); 
+        DROP TABLE ONE;
+        DROP TABLE TWO;
+        CREATE TABLE ONE(A INT PRIMARY KEY, B INT);
+        INSERT INTO ONE VALUES(0, NULL);
         INSERT INTO ONE VALUES(1, 0);
-        INSERT INTO ONE VALUES(2, 1); 
-        INSERT INTO ONE VALUES(3, 4); 
-        CREATE TABLE TWO(A INT PRIMARY KEY, B INT); 
+        INSERT INTO ONE VALUES(2, 1);
+        INSERT INTO ONE VALUES(3, 4);
+        CREATE TABLE TWO(A INT PRIMARY KEY, B INT);
         INSERT INTO TWO VALUES(0, NULL);
-        INSERT INTO TWO VALUES(1, 0); 
-        INSERT INTO TWO VALUES(2, 2); 
-        INSERT INTO TWO VALUES(3, 3); 
+        INSERT INTO TWO VALUES(1, 0);
+        INSERT INTO TWO VALUES(2, 2);
+        INSERT INTO TWO VALUES(3, 3);
         INSERT INTO TWO VALUES(4, NULL);
         */
 

h2/src/test/org/h2/test/synth/TestKill.java

@@ -13,6 +13,10 @@ import java.util.Random;
 
 import org.h2.test.TestBase;
 
+/**
+ * A random recovery test. This test starts a process that executes random operations
+ * against a database, then kills this process. Afterwards recovery is tested.
+ */
 public class TestKill extends TestBase {
 
     Connection conn;

h2/src/test/org/h2/test/synth/TestKillProcess.java

@@ -13,6 +13,9 @@ import java.util.Random;
 import org.h2.store.FileLister;
 import org.h2.test.TestBase;
 
+/**
+ * Test application for {@link TestKill}.
+ */
 public class TestKillProcess {
     public static void main(String[] args) throws Exception {
         try {

h2/src/test/org/h2/test/synth/TestKillRestart.java

@@ -14,6 +14,10 @@ import java.util.Random;
 
 import org.h2.test.TestBase;
 
+/**
+ * Standalone recovery test. A new process is started and then killed while it
+ * executes random statements.
+ */
 public class TestKillRestart extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/synth/TestRandomSQL.java

@@ -18,6 +18,9 @@ import org.h2.test.TestBase;
 import org.h2.tools.DeleteDbFiles;
 import org.h2.util.RandomUtils;
 
+/**
+ * This test executes random SQL statements generated using the BNF tool.
+ */
 public class TestRandomSQL extends TestBase {
 
     private int dbId;

h2/src/test/org/h2/test/synth/TestSimpleIndex.java

@@ -10,7 +10,11 @@ import java.sql.SQLException;
 import java.sql.Statement;
 
 import org.h2.test.TestBase;
+import org.h2.test.synth.sql.RandomGen;
 
+/**
+ * A test that runs random operations against a table to test the various index implementations.
+ */
 public class TestSimpleIndex extends TestBase {
 
     Connection conn;

h2/src/test/org/h2/test/synth/TestThreads.java

@@ -12,10 +12,12 @@ import java.util.Random;
 
 import org.h2.test.TestBase;
 
+/**
+ * This test starts multiple threads and executes random operations in each thread.
+ */
 public class TestThreads extends TestBase implements Runnable {
 
     public TestThreads() {
-
     }
 
     public void test() throws Exception {

h2/src/test/org/h2/test/synth/TestTimer.java

@@ -15,6 +15,11 @@ import org.h2.test.TestBase;
 import org.h2.tools.Backup;
 import org.h2.tools.DeleteDbFiles;
 
+/**
+ * A recovery test that checks the consistency of a database (if it exists),
+ * then deletes everything and runs in an endless loop executing random operations.
+ * This loop is usually stopped by turning off the computer.
+ */
 public class TestTimer extends TestBase {
 
     public void test() throws Exception {

h2/src/test/org/h2/test/synth/Column.java → h2/src/test/org/h2/test/synth/sql/Column.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.ResultSetMetaData;
 import java.sql.SQLException;
@@ -10,6 +10,9 @@ import java.sql.Types;
 
 import org.h2.value.DataType;
 
+/**
+ * A column of a table.
+ */
 class Column {
     private TestSynth config;
     private String name;

h2/src/test/org/h2/test/synth/Command.java → h2/src/test/org/h2/test/synth/sql/Command.java

@@ -2,11 +2,14 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.SQLException;
 import java.util.HashMap;
 
+/**
+ * Represents a statement.
+ */
 class Command {
     TestSynth config;
     static final int CONNECT = 0, RESET = 1, DISCONNECT = 2, CREATE_TABLE = 3, INSERT = 4, DROP_TABLE = 5, SELECT = 6,

h2/src/test/org/h2/test/synth/DbConnection.java → h2/src/test/org/h2/test/synth/sql/DbConnection.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
@@ -12,6 +12,9 @@ import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
 
+/**
+ * Represents a connection to a real database.
+ */
 class DbConnection implements DbInterface {
     private TestSynth config;
     private int id;

h2/src/test/org/h2/test/synth/DbInterface.java → h2/src/test/org/h2/test/synth/sql/DbInterface.java

@@ -2,10 +2,13 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.SQLException;
 
+/**
+ * Represents a connection to a (real or simulated) database.
+ */
 public interface DbInterface {
 
     void reset() throws SQLException;

h2/src/test/org/h2/test/synth/DbState.java → h2/src/test/org/h2/test/synth/sql/DbState.java

@@ -2,11 +2,14 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.SQLException;
 import java.util.ArrayList;
 
+/**
+ * Represents a connection to a simulated database.
+ */
 public class DbState implements DbInterface {
 
     private TestSynth config;

h2/src/test/org/h2/test/synth/Expression.java → h2/src/test/org/h2/test/synth/sql/Expression.java

@@ -2,11 +2,14 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.Types;
 import java.util.ArrayList;
 
+/**
+ * Represents an expression.
+ */
 public class Expression {
     boolean isCondition;
 

h2/src/test/org/h2/test/synth/Index.java → h2/src/test/org/h2/test/synth/sql/Index.java

@@ -2,8 +2,11 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
+/**
+ * Represents an index.
+ */
 public class Index {
     Table table;
     String name;

h2/src/test/org/h2/test/synth/RandomGen.java → h2/src/test/org/h2/test/synth/sql/RandomGen.java

@@ -2,13 +2,16 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.Date;
 import java.sql.Time;
 import java.sql.Timestamp;
 import java.util.Random;
 
+/**
+ * A random data generator class.
+ */
 public class RandomGen {
     private Random random = new Random();
 

h2/src/test/org/h2/test/synth/Result.java → h2/src/test/org/h2/test/synth/sql/Result.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.io.PrintWriter;
 import java.io.StringWriter;
@@ -14,6 +14,9 @@ import java.util.Collections;
 
 import org.h2.test.TestBase;
 
+/**
+ * Represents an in-memory result.
+ */
 class Result implements Comparable {
     static final int SUCCESS = 0, BOOLEAN = 1, INT = 2, EXCEPTION = 3, RESULT_SET = 4;
     private int type;

h2/src/test/org/h2/test/synth/Row.java → h2/src/test/org/h2/test/synth/sql/Row.java

@@ -2,11 +2,14 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.sql.ResultSet;
 import java.sql.SQLException;
 
+/**
+ * Represents a row.
+ */
 class Row implements Comparable {
     private Value[] data;
 

h2/src/test/org/h2/test/synth/Table.java → h2/src/test/org/h2/test/synth/sql/Table.java

@@ -2,10 +2,13 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.util.ArrayList;
 
+/**
+ * Represents a table.
+ */
 class Table {
     private TestSynth config;
     private String name;

h2/src/test/org/h2/test/synth/TestSynth.java → h2/src/test/org/h2/test/synth/sql/TestSynth.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.util.ArrayList;
 
@@ -10,10 +10,15 @@ import org.h2.test.TestAll;
 import org.h2.test.TestBase;
 import org.h2.util.RandomUtils;
 
-// TODO hsqldb: call 1||null should return 1 but returns null
-// TODO hsqldb: call mod(1) should return invalid parameter count but returns null
+/**
+ * A test that generates random SQL statements against a number of databases
+ * and compares the results.
+ */
 public class TestSynth extends TestBase {
 
+    //  TODO hsqldb: call 1||null should return 1 but returns null
+    //  TODO hsqldb: call mod(1) should return invalid parameter count but returns null
+
     static final int H2 = 0, H2_MEM = 1, HSQLDB = 2, MYSQL = 3, POSTGRESQL = 4;
 
     private DbState db = new DbState(this);

h2/src/test/org/h2/test/synth/Value.java → h2/src/test/org/h2/test/synth/sql/Value.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.sql;
 
 import java.math.BigDecimal;
 import java.sql.Date;
@@ -15,6 +15,9 @@ import java.sql.Types;
 
 import org.h2.value.DataType;
 
+/**
+ * Represents a simple value.
+ */
 public class Value {
     private int type;
     private Object data;

h2/src/test/org/h2/test/synth/sql/package.html

+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<!--
+Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+Initial Developer: H2 Group
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
+<head><meta http-equiv="Content-Type" content="text/html;charset=utf-8" /><title>
+Javadoc package documentation
+</title></head><body style="font: 8pt/130% Tahoma, Arial, Helvetica, sans-serif; font-weight: normal;">
+
+A synthetic test using random SQL statements executed against multiple databases.
+
+</body></html>
\ No newline at end of file

h2/src/test/org/h2/test/synth/TestMulti.java → h2/src/test/org/h2/test/synth/thread/TestMulti.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.thread;
 
 import java.sql.Connection;
 import java.sql.DriverManager;
@@ -10,6 +10,9 @@ import java.sql.SQLException;
 
 import org.h2.test.TestBase;
 
+/**
+ * Starts multiple threads and performs random operations on each thread.
+ */
 public class TestMulti extends TestBase {
 
     public volatile boolean stop;

h2/src/test/org/h2/test/synth/TestMultiNews.java → h2/src/test/org/h2/test/synth/thread/TestMultiNews.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.thread;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
@@ -10,6 +10,10 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 
+/**
+ * The operation part of {@link TestMulti}.
+ * Queries and updates a table.
+ */
 public class TestMultiNews extends TestMultiThread {
 
     private static final String PREFIX_URL = "http://feeds.wizbangblog.com/WizbangFullFeed?m=";

h2/src/test/org/h2/test/synth/TestMultiNewsSimple.java → h2/src/test/org/h2/test/synth/thread/TestMultiNewsSimple.java

@@ -2,13 +2,17 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.thread;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 
+/**
+ * The operation part of {@link TestMulti}.
+ * Executes simple queries and updates in a table.
+ */
 public class TestMultiNewsSimple extends TestMultiThread {
 
     Connection conn;

h2/src/test/org/h2/test/synth/TestMultiOrder.java → h2/src/test/org/h2/test/synth/thread/TestMultiOrder.java

@@ -2,7 +2,7 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.thread;
 
 import java.math.BigDecimal;
 import java.sql.Connection;
@@ -11,6 +11,10 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.Random;
 
+/**
+ * The operation part of {@link TestMulti}.
+ * Queries and updates two tables.
+ */
 public class TestMultiOrder extends TestMultiThread {
 
     Connection conn;

h2/src/test/org/h2/test/synth/TestMultiThread.java → h2/src/test/org/h2/test/synth/thread/TestMultiThread.java

@@ -2,13 +2,16 @@
  * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
  * Initial Developer: H2 Group
  */
-package org.h2.test.synth;
+package org.h2.test.synth.thread;
 
 import java.sql.SQLException;
 import java.util.Random;
 
 import org.h2.test.TestBase;
 
+/**
+ * The is an abstract operation for {@link TestMulti}.
+ */
 abstract class TestMultiThread extends Thread {
 
     TestMulti base;

h2/src/test/org/h2/test/synth/thread/package.html

+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<!--
+Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+Initial Developer: H2 Group
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
+<head><meta http-equiv="Content-Type" content="text/html;charset=utf-8" /><title>
+Javadoc package documentation
+</title></head><body style="font: 8pt/130% Tahoma, Arial, Helvetica, sans-serif; font-weight: normal;">
+
+Synthetic tests using random operations in multiple threads.
+
+</body></html>
\ No newline at end of file

h2/src/tools/org/h2/tools/code/CheckPackageHtml.java → h2/src/tools/org/h2/tools/code/CheckJavadoc.java

+/*
+ * Copyright 2004-2007 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
+ * Initial Developer: H2 Group
+ */
 package org.h2.tools.code;
 
 import java.io.File;
+import java.io.IOException;
+import java.io.RandomAccessFile;
 
 /**
- * This tool checks that for each .java file there is a package.html file.
+ * This tool checks that for each .java file there is a package.html file,
+ * and that for each .java file there is at least one (class level) javadoc comment.
  */
-public class CheckPackageHtml {
+public class CheckJavadoc {
 
     private boolean hasError;
 
     public static void main(String[] args) throws Exception {
-        new CheckPackageHtml().run();
+        new CheckJavadoc().run();
     }
 
     void run() throws Exception {
@@ -43,6 +50,7 @@ public class CheckPackageHtml {
             }
         } else {
             if (name.endsWith(".java")) {
+                checkJavadoc(file);
                 return 1;
             } else if (name.equals("package.html")) {
                 return 2;
@@ -51,4 +59,22 @@ public class CheckPackageHtml {
         return 0;
     }
 
+    private void checkJavadoc(File file) throws IOException {
+        RandomAccessFile in = new RandomAccessFile(file, "r");
+        byte[] data = new byte[(int) file.length()];
+        in.readFully(data);
+        in.close();
+        String text = new String(data);
+        int comment = text.indexOf("/**");
+        if (comment < 0) {
+            System.out.println("No Javadoc comment: " + file.getAbsolutePath());
+            hasError = true;
+        }
+        int open = text.indexOf('{');
+        if (open < 0 || open < comment) {
+            System.out.println("No '{' or '{' before the first Javadoc comment: " + file.getAbsolutePath());
+            hasError = true;
+        }
+    }
+
 }