Invalid database names are now detected and a better error message is thrown.

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

@@ -16,7 +16,7 @@ public class ErrorCode {
      * The error with code <code>2000</code> is thrown when
      * the result set is positioned before the first or after the last row, or
      * not on a valid row for the given operation.
-     * Example:
+     * Example of wrong usage:
      * <pre>
      * ResultSet rs = stat.executeQuery("SELECT * FROM DUAL");
      * rs.getString(1);
@@ -343,7 +343,7 @@ public class ErrorCode {
     /**
      * The error with code <code>90003</code> is thrown when
      * trying to convert a String to a binary value. Two hex digits
-     * per byte are required. Example:
+     * per byte are required. Example of wrong usage:
      * <pre>
      * CALL X'00023';
      * Hexadecimal string with odd number of characters: 00023
@@ -485,7 +485,7 @@ public class ErrorCode {
      * The error with code <code>90016</code> is thrown when
      * a column was used in the expression list or the order by clause
      * of a group or aggregate query, and that column is not in the GROUP BY clause.
-     * Example:
+     * Example of wrong usage:
      * <pre>
      * CREATE TABLE TEST(ID INT, NAME VARCHAR);
      * INSERT INTO TEST VALUES(1, 'Hello'), (2, 'World');
@@ -517,7 +517,7 @@ public class ErrorCode {
      * closed automatically, but relying on the finalizer is not good practice
      * as it is not guaranteed and behavior is virtual machine dependent. The
      * application should close the connection. This exception only appears in
-     * the .trace.db file. Example:
+     * the .trace.db file. Example of wrong usage:
      * <pre>
      * Connection conn;
      * conn = DriverManager.getConnection(&quot;jdbc:h2:&tilde;/test&quot;);
@@ -835,7 +835,7 @@ public class ErrorCode {
      * the user password. A single space needs to be added between the file
      * password and the user password; the file password itself may not contain
      * spaces. File passwords (as well as user passwords) are case sensitive.
-     * Example:
+     * Example of wrong usage:
      * <pre>
      * String url = &quot;jdbc:h2:&tilde;/test;CIPHER=AES&quot;;
      * String passwords = &quot;filePasswordUserPassword&quot;;
@@ -865,7 +865,7 @@ public class ErrorCode {
     /**
      * The error with code <code>90052</code> is thrown when
      * a subquery that is used as a value contains more than one column.
-     * Example:
+     * Example of wrong usage:
      * <pre>
      * CREATE TABLE TEST(ID INT);
      * INSERT INTO TEST VALUES(1), (2);
@@ -1054,6 +1054,7 @@ public class ErrorCode {
      * expression that is used in the ORDER BY is not in the result list. This
      * is required for distinct queries, otherwise the result would be
      * ambiguous.
+     * Example of wrong usage:
      * <pre>
      * CREATE TABLE TEST(ID INT, NAME VARCHAR);
      * INSERT INTO TEST VALUES(2, 'Hello'), (1, 'Hello');
@@ -1111,7 +1112,8 @@ public class ErrorCode {
     /**
      * The error with code <code>90073</code> is thrown when trying to create
      * an alias for a Java method, if two methods exists in this class that have
-     * this name and the same number of parameters. Example:
+     * this name and the same number of parameters.
+     * Example of wrong usage:
      * <pre>
      * CREATE ALIAS GET_LONG FOR 
      *      "java.lang.Long.getLong";
@@ -1250,6 +1252,7 @@ public class ErrorCode {
      * The error with code <code>90085</code> is thrown when trying to
      * manually drop an index that was generated by the system because of a
      * unique constraint.
+     * Example of wrong usage:
      * <pre>
      * CREATE TABLE TEST(ID INT, CONSTRAINT UID UNIQUE(ID));
      * DROP INDEX UID_INDEX_0;
@@ -1298,7 +1301,7 @@ public class ErrorCode {
      * trying to change the collation while there was already data in
      * the database. The collation of the database must be set when the
      * database is empty.
-     * Example:
+     * Example of wrong usage:
      * <pre>
      * CREATE TABLE TEST(NAME VARCHAR PRIMARY KEY);
      * INSERT INTO TEST VALUES('Hello', 'World');
@@ -1424,7 +1427,7 @@ public class ErrorCode {
     /**
      * The error with code <code>90102</code> is thrown when
      * trying to use unsupported options for the given compression algorithm.
-     * Example:
+     * Example of wrong usage:
      * <pre>
      * CALL COMPRESS(STRINGTOUTF8(SPACE(100)), 'DEFLATE l 10');
      * </pre>
@@ -1668,6 +1671,7 @@ public class ErrorCode {
      * with object that extends the class BigDecimal, and the system property
      * h2.allowBigDecimalExtensions is not set. Using extensions of BigDecimal is
      * dangerous because the database relies on the behavior of BigDecimal.
+     * Example of wrong usage:
      * <pre>
      * BigDecimal bd = new MyDecimal("$10.3");
      * prep.setBigDecimal(1, bd);
@@ -1725,7 +1729,8 @@ public class ErrorCode {
      * The error with code <code>90130</code> is thrown when
      * an execute method of PreparedStatement was called with a SQL statement.
      * This is not allowed according to the JDBC specification. Instead, use
-     * an execute method of Statement. Example:
+     * an execute method of Statement. 
+     * Example of wrong usage:
      * <pre>
      * PreparedStatement prep = conn.prepareStatement("SELECT * FROM TEST");
      * prep.execute("DELETE FROM TEST");
@@ -1812,7 +1817,28 @@ public class ErrorCode {
      */
     public static final int CAN_ONLY_ASSIGN_TO_VARIABLE_1 = 90137;
     
-    // next is 90138
+    /**
+     * The error with code <code>90138</code> is thrown when
+     * 
+     * trying to open a persistent database using an incorrect database name.
+     * The name of a persistent database contains the path and file name prefix
+     * where the data is stored. The file name part of a database name must be
+     * at least two characters.
+     * 
+     * Example of wrong usage:
+     * <pre>
+     * DriverManager.getConnection("jdbc:h2:~/t");
+     * DriverManager.getConnection("jdbc:h2:~/test/");
+     * </pre>
+     * Correct:
+     * <pre>
+     * DriverManager.getConnection("jdbc:h2:~/te");
+     * DriverManager.getConnection("jdbc:h2:~/test/te");
+     * </pre>
+     */
+    public static final int INVALID_DATABASE_NAME_1 = 90138;
+
+    // next is 90139
     
     private ErrorCode() {
         // utility class

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

@@ -291,6 +291,10 @@ public class ConnectionInfo {
     String getName() throws SQLException {
         if (persistent) {
             String n = FileUtils.normalize(name + Constants.SUFFIX_DATA_FILE);
+            String fileName = FileUtils.getFileName(n);
+            if (fileName.length() < Constants.SUFFIX_DATA_FILE.length() + 2) {
+                throw Message.getSQLException(ErrorCode.INVALID_DATABASE_NAME_1, name);
+            }
             n = n.substring(0, n.length() - Constants.SUFFIX_DATA_FILE.length());
             return FileUtils.normalize(n);
         }

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

@@ -40,8 +40,6 @@ public class Engine {
     }
 
     private Session openSession(ConnectionInfo ci, boolean ifExists, String cipher) throws SQLException {
-        // may not remove properties here, otherwise they are lost 
-        // if it is required to call it twice
         String name = ci.getName();
         Database database;
         if (ci.isUnnamedInMemory()) {

h2/src/main/org/h2/res/_messages_de.properties

@@ -159,6 +159,7 @@
 90135=Die Datenbank befindet sich im Exclusiv Modus; es k\u00F6nnen keine zus\u00E4tzlichen Verbindungen ge\u00F6ffnet werden
 90136=Diese Outer Join Bedingung wird nicht unterst\u00FCtzt\: {0}
 90137=Werte k\u00F6nnen nur einer Variablen zugewiesen werden, nicht an\: {0}
+90138=Ung\u00FCltiger Datenbank Name\: {0}
 HY000=Allgemeiner Fehler\: {0}
 HY004=Unbekannter Datentyp\: {0}
 HYC00=Dieses Feature wird unterst\u00FCtzt

h2/src/main/org/h2/res/_messages_en.properties

@@ -159,6 +159,7 @@
 90135=The database is open in exclusive mode; can not open additional connections
 90136=Unsupported outer join condition\: {0}
 90137=Can only assign to a variable, not to\: {0}
+90138=Invalid database name\: {0}
 HY000=General error\: {0}
 HY004=Unknown data type\: {0}
 HYC00=Feature not supported

h2/src/main/org/h2/res/_messages_ja.properties

@@ -159,6 +159,7 @@
 90135=\u30C7\u30FC\u30BF\u30D9\u30FC\u30B9\u306F\u6392\u4ED6\u30E2\u30FC\u30C9\u3067\u30AA\u30FC\u30D7\u30F3\u3055\u308C\u3066\u3044\u307E\u3059; \u63A5\u7D9A\u3092\u8FFD\u52A0\u3059\u308B\u3053\u3068\u306F\u3067\u304D\u307E\u305B\u3093
 90136=\u672A\u30B5\u30DD\u30FC\u30C8\u306E\u5916\u90E8\u7D50\u5408\u6761\u4EF6\: {0}
 90137=\u5272\u308A\u5F53\u3066\u306F\u5909\u6570\u306B\u306E\u307F\u53EF\u80FD\u3067\u3059\u3002{0} \u306B\u306F\u3067\u304D\u307E\u305B\u3093
+90138=\#Invalid database name\: {0}
 HY000=\u4E00\u822C\u30A8\u30E9\u30FC\: {0}
 HY004=\u4E0D\u660E\u306A\u30C7\u30FC\u30BF\u578B\: {0}
 HYC00=\u6A5F\u80FD\u306F\u30B5\u30DD\u30FC\u30C8\u3055\u308C\u3066\u3044\u307E\u305B\u3093

h2/src/main/org/h2/res/_messages_pl.properties

@@ -159,6 +159,7 @@
 90135=\#The database is open in exclusive mode; can not open additional connections
 90136=\#Unsupported outer join condition\: {0}
 90137=\#Can only assign to a variable, not to\: {0}
+90138=\#Invalid database name\: {0}
 HY000=Blad ogolny\: {0}
 HY004=Nieznany typ danyche\: {0}
 HYC00=Cecha nie jest wspierana

h2/src/main/org/h2/res/_messages_pt_br.properties

@@ -159,6 +159,7 @@
 90135=\#The database is open in exclusive mode; can not open additional connections
 90136=\#Unsupported outer join condition\: {0}
 90137=\#Can only assign to a variable, not to\: {0}
+90138=\#Invalid database name\: {0}
 HY000=Erro geral\: {0}
 HY004=Tipo de dados desconhecido\: {0}
 HYC00=Recurso n\u00E3o suportado

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

@@ -300,7 +300,7 @@ public class FileSystemDisk extends FileSystem {
         }
         String fullFileName = normalize(name);
         if (!fullFileName.startsWith(path)) {
-            throw Message.getInternalError("file utils error: " + fullFileName+" does not start with "+path);
+            throw Message.getInternalError("file utils error: " + fullFileName + " does not start with " + path);
         }
         String fileName = fullFileName.substring(path.length());
         return fileName;

h2/src/test/org/h2/test/db/TestCases.java

@@ -18,6 +18,7 @@ import java.sql.Time;
 import java.sql.Timestamp;
 import java.util.Random;
 
+import org.h2.constant.ErrorCode;
 import org.h2.test.TestBase;
 
 /**
@@ -26,6 +27,7 @@ import org.h2.test.TestBase;
 public class TestCases extends TestBase {
 
     public void test() throws Exception {
+        testInvalidDatabaseName();
         testReuseSpace();
         testDeleteGroup();
         testDisconnect();
@@ -55,6 +57,24 @@ public class TestCases extends TestBase {
         testCollation();
     }
     
+    private void testInvalidDatabaseName() throws Exception {
+        if (config.memory) {
+            return;
+        }
+        try {
+            getConnection("cases/");
+            fail();
+        } catch (SQLException e) {
+            assertEquals(ErrorCode.INVALID_DATABASE_NAME_1, e.getErrorCode());
+        }
+        try {
+            getConnection("cases/a");
+            fail();
+        } catch (SQLException e) {
+            assertEquals(ErrorCode.INVALID_DATABASE_NAME_1, e.getErrorCode());
+        }
+    }
+    
     private void testReuseSpace() throws Exception {
         deleteDb("cases");
         Connection conn = getConnection("cases");