Various bugfixes and improvements in the page store mechanism (still experimental).

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

@@ -148,6 +148,7 @@ class PageBtreeNode extends PageBtree {
                 return splitPoint2;
             }
             PageBtree page2 = page.split(splitPoint);
+            readAllRows();
             addChild(x, page2.getPos(), pivot);
             index.getPageStore().updateRecord(page, true, page.data);
             index.getPageStore().updateRecord(page2, true, page2.data);

h2/src/main/org/h2/store/PageInputStream.java

@@ -83,21 +83,20 @@ public class PageInputStream extends InputStream {
             endOfFile = true;
             return;
         }
+        int next;
+        while (true) {
             if (trunk == null) {
                 trunk = new PageStreamTrunk(store, trunkNext);
                 trunk.read();
                 trunkNext = trunk.getNextTrunk();
             }
-        int next;
-        while (true) {
+            if (trunk != null) {
                 next = trunk.getNextPageData();
-            if (dataPage == -1 || dataPage == next) {
-                if (next != -1) {
+                if (next == -1) {
+                    trunk = null;
+                } else if (dataPage == -1 || dataPage == next) {
                     break;
                 }
-                trunk = new PageStreamTrunk(store, trunkNext);
-                trunk.read();
-                trunkNext = trunk.getNextTrunk();
             }
         }
         if (trace.isDebugEnabled()) {

h2/src/test/org/h2/test/unit/TestPageStore.java

@@ -7,6 +7,7 @@
 package org.h2.test.unit;
 
 import java.sql.Connection;
+import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
@@ -31,11 +32,27 @@ public class TestPageStore extends TestBase {
     }
 
     public void test() throws Exception {
+        testLargeIndex();
         testUniqueIndex();
         testCreateIndexLater();
         testFuzzOperations();
     }
 
+    private void testLargeIndex() throws SQLException {
+        if (config.memory) {
+            return;
+        }
+        deleteDb("pageStore");
+        Connection conn = getConnection("pageStore");
+        conn.createStatement().execute("create table test(id varchar primary key, d varchar)");
+        PreparedStatement prep = conn.prepareStatement("insert into test values(?, space(500))");
+        for (int i = 0; i < 20000; i++) {
+            prep.setString(1, "" + i);
+            prep.executeUpdate();
+        }
+        conn.close();
+    }
+
     private void testUniqueIndex() throws SQLException {
         if (config.memory) {
             return;