Documentation

h2/src/docsrc/html/changelog.html

@@ -18,7 +18,12 @@ Change Log
 <h1>Change Log</h1>
 
 <h2>Next Version (unreleased)</h2>
-<ul><li>MVStore: descending indexes with "nulls first" did not work as expected
+<ul><li>There was a way to prevent a database from being re-opened,
+    by creating a column constraint that references a table with a higher id.
+    This is now detected, and creating the table is prohibited.
+    In future versions of H2, most likely creating references to other
+    tables will no longer be supported because of such problems.
+</li><li>MVStore: descending indexes with "nulls first" did not work as expected
     (null was ordered last).
 </li><li>Large result sets now always create temporary tables instead of temporary files.
 </li><li>When using the PageStore, opening a database failed in some cases with a NullPointerException

h2/src/docsrc/html/roadmap.html

@@ -26,6 +26,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
 <ul><li>Replace file password hash with file encryption key; validate encryption key when connecting.
 </li><li>Remove "set binary collation" feature.
 </li><li>Remove the encryption algorithm XTEA.
+</li><li>Disallow referencing other tables in a table (via constraints for example).
 </li></ul>
 
 <h2>Version 1.4.x: Planned Changes</h2>

h2/src/main/org/h2/mvstore/MVMap.java

@@ -782,7 +782,7 @@ public class MVMap<K, V> extends AbstractMap<K, V>
         rewrite(root, set);
     }
 
-    public int rewrite(Page p, Set<Integer> set) {
+    private int rewrite(Page p, Set<Integer> set) {
         ; // TODO write more tests
         if (p.isLeaf()) {
             long pos = p.getPos();
@@ -838,7 +838,6 @@ public class MVMap<K, V> extends AbstractMap<K, V>
         return writtenPageCount;
     }
 
-
     /**
      * Get a cursor to iterate over a number of keys and values.
      *

h2/src/main/org/h2/mvstore/MVStore.java

@@ -43,9 +43,9 @@ TransactionStore:
     if there is only one connection
 
 MVStore:
-- data kept in stream store if transaction is not committed?
-- automated 'kill process' and 'power failure' test
 - test and possibly improve compact operation (for large dbs)
+- is data kept in the stream store if the transaction is not committed?
+- automated 'kill process' and 'power failure' test
 - compact: avoid processing pages using a counting bloom filter
 - defragment (re-creating maps, specially those with small pages)
 - store number of write operations per page (maybe defragment
@@ -65,11 +65,11 @@ MVStore:
 - remove features that are not really needed; simplify the code
     possibly using a separate layer or tools
     (retainVersion?)
-- rename "store" to "save", as "store" is used in "storeVersion"
 - MVStoreTool.dump should dump the data if possible;
     possibly using a callback for serialization
 - optional pluggable checksum mechanism (per page), which
     requires that everything is a page (including headers)
+- rename "store" to "save", as "store" is used in "storeVersion"
 - rename setStoreVersion to setDataVersion, setSchemaVersion or similar
 - temporary file storage
 - simple rollback method (rollback to last committed version)

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

@@ -384,7 +384,7 @@ java org.h2.test.TestAll timer
         printSystemInfo();
         
         // use lower values, to better test those cases,
-        // and to speed up the tests (for delays)
+        // and (for delays) to speed up the tests
 
         System.setProperty("h2.maxMemoryRows", "100");