--no commit message

--no commit message

h2/src/main/org/h2/index/ScanCursor.java

@@ -45,22 +45,25 @@ public class ScanCursor implements Cursor {
     public boolean next() throws SQLException {
         if (multiVersion) {
             while (true) {
-                if (delta.hasNext()) {
+                if (delta != null) {
+                    if (!delta.hasNext()) {
+                        delta = null;
+                        row = null;
+                        continue;
+                    } else {
                         row = (Row) delta.next();
                         if (!row.getDeleted() || row.getSessionId() == session.getId()) {
-                        row = null;
                             continue;
                         }
+                    }
                 } else {
                     row = scan.getNextRow(session, row);
+                    if (row != null && row.getSessionId() != 0 && row.getSessionId() != session.getId()) {
+                        continue;
                     }
-                if (row == null) {
-                    break;
                 }
-                if (row.getSessionId() == 0 || row.getSessionId() == session.getId() || row.getDeleted()) {
                 break;
             }
-            }
             return row != null;
         }
         row = scan.getNextRow(session, row);

h2/src/main/org/h2/index/ScanIndex.java

@@ -144,7 +144,7 @@ public class ScanIndex extends BaseIndex {
 
     public void commit(int operation, Row row) throws SQLException {
         if (database.isMultiVersion()) {
-            if (delta != null && operation == UndoLogRecord.DELETE) {
+            if (delta != null) {
                 delta.remove(row);
             }
             incrementRowCount(row.getSessionId(), operation == UndoLogRecord.DELETE ? 1 : -1);

h2/src/main/org/h2/util/Permutations.java

@@ -19,10 +19,23 @@ public class Permutations {
     private int[] index;
     private boolean hasNext = true;
 
+    /**
+     * Create a new permutations object.
+     *
+     * @param in the source array
+     * @param out the target array
+     */
     public Permutations(Object[] in, Object[] out) {
         this(in, out, in.length);
     }
 
+    /**
+     * Create a new permutations object.
+     *
+     * @param in the source array
+     * @param out the target array
+     * @param m the number of output elements to generate
+     */
     public Permutations(Object[] in, Object[] out, int m) {
         this.n = in.length;
         this.m = m;
@@ -86,6 +99,8 @@ public class Permutations {
     /**
      * Get the index of the first element from the right that is less
      * than its neighbor on the right.
+     *
+     * @return the index or -1 if non is found
      */
     private int rightmostDip() {
         for (int i = n - 2; i >= 0; i--) {
@@ -98,6 +113,8 @@ public class Permutations {
 
     /**
      * Reverse the elements to the right of the specified index.
+     *
+     * @param i the index
      */
     private void reverseAfter(int i) {
         int start = i + 1;

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

@@ -154,8 +154,6 @@ java org.h2.test.TestAll timer
 
 /*
 
-Javadocs: abstract class (Table)
-
 add tests with select distinct type (code coverage)
 
 documentation: package.html

h2/src/test/org/h2/test/mvcc/TestMvcc1.java

@@ -89,6 +89,18 @@ public class TestMvcc1 extends TestBase {
         s2.execute("drop table test");
         c2.rollback();
 
+        // table scan problem
+        s1.execute("create table test(id int, name varchar)");
+        s1.execute("insert into test values(1, 'A'), (2, 'B')");
+        c1.commit();
+        test(s1, "select count(*) from test where name<>'C'", "2");
+        s2.execute("update test set name='B2' where id=2");
+        test(s1, "select count(*) from test where name<>'C'", "2");
+        c2.commit();
+        s2.execute("drop table test");
+        c2.rollback();
+
+
         // referential integrity problem
         s1.execute("create table a (id integer identity not null, code varchar(10) not null, primary key(id))");
         s1.execute("create table b (name varchar(100) not null, a integer, primary key(name), foreign key(a) references a(id))");