From b17c3bf6df4e58bbee59ce7063dcc58ff79edd55 Mon Sep 17 00:00:00 2001
From: Calle Wilund <calle@cloudius-systems.com>
Date: Tue, 7 Jul 2015 16:07:56 +0200
Subject: [PATCH] TokenFct Java->C++

---
 cql3/functions/TokenFct.java | 65 ------------------------------------
 cql3/functions/token_fct.hh  | 60 +++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 65 deletions(-)
 delete mode 100644 cql3/functions/TokenFct.java
 create mode 100644 cql3/functions/token_fct.hh

diff --git a/cql3/functions/TokenFct.java b/cql3/functions/TokenFct.java
deleted file mode 100644
index 9d50a972f6..0000000000
--- a/cql3/functions/TokenFct.java
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.cassandra.cql3.functions;
-
-import java.nio.ByteBuffer;
-import java.util.List;
-
-import org.apache.cassandra.config.CFMetaData;
-import org.apache.cassandra.config.ColumnDefinition;
-import org.apache.cassandra.db.composites.CBuilder;
-import org.apache.cassandra.db.marshal.AbstractType;
-import org.apache.cassandra.dht.IPartitioner;
-import org.apache.cassandra.exceptions.InvalidRequestException;
-import org.apache.cassandra.service.StorageService;
-
-public class TokenFct extends NativeScalarFunction
-{
-    // The actual token function depends on the partitioner used
-    private static final IPartitioner partitioner = StorageService.getPartitioner();
-
-    private final CFMetaData cfm;
-
-    public TokenFct(CFMetaData cfm)
-    {
-        super("token", partitioner.getTokenValidator(), getKeyTypes(cfm));
-        this.cfm = cfm;
-    }
-
-    private static AbstractType[] getKeyTypes(CFMetaData cfm)
-    {
-        AbstractType[] types = new AbstractType[cfm.partitionKeyColumns().size()];
-        int i = 0;
-        for (ColumnDefinition def : cfm.partitionKeyColumns())
-            types[i++] = def.type;
-        return types;
-    }
-
-    public ByteBuffer execute(int protocolVersion, List<ByteBuffer> parameters) throws InvalidRequestException
-    {
-        CBuilder builder = cfm.getKeyValidatorAsCType().builder();
-        for (int i = 0; i < parameters.size(); i++)
-        {
-            ByteBuffer bb = parameters.get(i);
-            if (bb == null)
-                return null;
-            builder.add(bb);
-        }
-        return partitioner.getTokenFactory().toByteArray(partitioner.getToken(builder.build().toByteBuffer()));
-    }
-}
diff --git a/cql3/functions/token_fct.hh b/cql3/functions/token_fct.hh
new file mode 100644
index 0000000000..3039d68552
--- /dev/null
+++ b/cql3/functions/token_fct.hh
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Modified by Cloudius Systems
+ *
+ * Copyright 2015 Cloudius Systems
+ */
+
+#pragma once
+
+#include "types.hh"
+#include "native_scalar_function.hh"
+#include "dht/i_partitioner.hh"
+#include "utils/UUID.hh"
+
+namespace cql3 {
+namespace functions {
+
+class token_fct: public native_scalar_function {
+private:
+    schema_ptr _schema;
+
+public:
+    token_fct(schema_ptr s)
+            : native_scalar_function("token",
+                    // TODO: /*dht::global_partitioner().get_token_validator()*/
+                    bytes_type,
+                    s->partition_key_type()->types())
+                    , _schema(s) {
+    }
+
+    bytes_opt execute(serialization_format sf, const std::vector<bytes_opt>& parameters) override {
+        auto buf = _schema->partition_key_type()->serialize_optionals(parameters);
+        auto view = partition_key_view::from_bytes(std::move(buf));
+        auto tok = dht::global_partitioner().get_token(*_schema, view);
+        return { tok._data }
+                // TODO:
+                //{ dht::global_partitioner().get_token_validator()->decompose(tok) }
+                ;
+    }
+};
+
+}
+}