Add row value storage format for temporary storages

h2/src/main/org/h2/mvstore/db/ValueDataType.java

@@ -31,6 +31,7 @@ import org.h2.value.ValueArray;
 import org.h2.value.ValueBoolean;
 import org.h2.value.ValueByte;
 import org.h2.value.ValueBytes;
+import org.h2.value.ValueCollectionBase;
 import org.h2.value.ValueDate;
 import org.h2.value.ValueDecimal;
 import org.h2.value.ValueDouble;
@@ -43,6 +44,7 @@ import org.h2.value.ValueLobDb;
 import org.h2.value.ValueLong;
 import org.h2.value.ValueNull;
 import org.h2.value.ValueResultSet;
+import org.h2.value.ValueRow;
 import org.h2.value.ValueShort;
 import org.h2.value.ValueString;
 import org.h2.value.ValueStringFixed;
@@ -72,6 +74,7 @@ public class ValueDataType implements DataType {
     private static final int BYTES_0_31 = 100;
     private static final int SPATIAL_KEY_2D = 132;
     private static final int CUSTOM_DATA_TYPE = 133;
+    private static final int ROW = 27;
 
     final DataHandler handler;
     final CompareMode compareMode;
@@ -393,9 +396,10 @@ public class ValueDataType implements DataType {
             }
             break;
         }
-        case Value.ARRAY: {
-            Value[] list = ((ValueArray) v).getList();
-            buff.put((byte) type).putVarInt(list.length);
+        case Value.ARRAY:
+        case Value.ROW: {
+            Value[] list = ((ValueCollectionBase) v).getList();
+            buff.put((byte) (type == Value.ARRAY ? Value.ARRAY : ROW)).putVarInt(list.length);
             for (Value x : list) {
                 writeValue(buff, x);
             }
@@ -610,13 +614,14 @@ public class ValueDataType implements DataType {
                         "lob type: " + smallLen);
             }
         }
-        case Value.ARRAY: {
+        case Value.ARRAY:
+        case ROW: {
             int len = readVarInt(buff);
             Value[] list = new Value[len];
             for (int i = 0; i < len; i++) {
                 list[i] = (Value) readValue(buff);
             }
-            return ValueArray.get(list);
+            return type == Value.ARRAY ? ValueArray.get(list) : ValueRow.get(list);
         }
         case Value.RESULT_SET: {
             SimpleResult rs = new SimpleResult();

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

@@ -32,6 +32,7 @@ import org.h2.value.ValueArray;
 import org.h2.value.ValueBoolean;
 import org.h2.value.ValueByte;
 import org.h2.value.ValueBytes;
+import org.h2.value.ValueCollectionBase;
 import org.h2.value.ValueDate;
 import org.h2.value.ValueDecimal;
 import org.h2.value.ValueDouble;
@@ -45,6 +46,7 @@ import org.h2.value.ValueLobDb;
 import org.h2.value.ValueLong;
 import org.h2.value.ValueNull;
 import org.h2.value.ValueResultSet;
+import org.h2.value.ValueRow;
 import org.h2.value.ValueShort;
 import org.h2.value.ValueString;
 import org.h2.value.ValueStringFixed;
@@ -90,6 +92,7 @@ public class Data {
     private static final int LOCAL_DATE = 133;
     private static final int LOCAL_TIMESTAMP = 134;
     private static final byte CUSTOM_DATA_TYPE = (byte)135;
+    private static final int ROW = 27;
 
     private static final long MILLIS_PER_MINUTE = 1000 * 60;
 
@@ -617,9 +620,10 @@ public class Data {
             }
             break;
         }
-        case Value.ARRAY: {
-            writeByte((byte) type);
-            Value[] list = ((ValueArray) v).getList();
+        case Value.ARRAY:
+        case Value.ROW: {
+            writeByte((byte) (type == Value.ARRAY ? Value.ARRAY : ROW));
+            Value[] list = ((ValueCollectionBase) v).getList();
             writeVarInt(list.length);
             for (Value x : list) {
                 writeValue(x);
@@ -848,13 +852,14 @@ public class Data {
                         objectId, precision, compression);
             }
         }
-        case Value.ARRAY: {
+        case Value.ARRAY:
+        case ROW: {
             int len = readVarInt();
             Value[] list = new Value[len];
             for (int i = 0; i < len; i++) {
                 list[i] = readValue();
             }
-            return ValueArray.get(list);
+            return type == Value.ARRAY ? ValueArray.get(list) : ValueRow.get(list);
         }
         case Value.RESULT_SET: {
             SimpleResult rs = new SimpleResult();
@@ -1082,8 +1087,9 @@ public class Data {
             }
             return len;
         }
-        case Value.ARRAY: {
-            Value[] list = ((ValueArray) v).getList();
+        case Value.ARRAY:
+        case Value.ROW: {
+            Value[] list = ((ValueCollectionBase) v).getList();
             int len = 1 + getVarIntLen(list.length);
             for (Value x : list) {
                 len += getValueLen(x, handler);

h2/src/test/org/h2/test/scripts/datatypes/row.sql

@@ -71,3 +71,11 @@ SELECT (1, ARRAY[1]) IN (SELECT 1, ARRAY[2]);
 
 SELECT (1, ARRAY[NULL]) IN (SELECT 1, ARRAY[NULL]);
 >> null
+
+-- The next tests should be at the of this file
+
+SET MAX_MEMORY_ROWS = 2;
+> ok
+
+SELECT (X, X) FROM SYSTEM_RANGE(1, 100000) ORDER BY -X FETCH FIRST ROW ONLY;
+>> ROW (100000, 100000)