cql3: convert UseStatement to C++

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

cql3/cql3.cc

@@ -14,6 +14,7 @@
 #include "functions/native_aggregate_function.hh"
 #include "functions/native_scalar_function.hh"
 
+#include "statements/use_statement.hh"
 #include "statements/parsed_statement.hh"
 #include "cql_statement.hh"
 

cql3/statements/UseStatement.java

@@ -1,67 +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.statements;
-
-import org.apache.cassandra.cql3.CQLStatement;
-import org.apache.cassandra.cql3.QueryOptions;
-import org.apache.cassandra.exceptions.InvalidRequestException;
-import org.apache.cassandra.exceptions.UnauthorizedException;
-import org.apache.cassandra.transport.messages.ResultMessage;
-import org.apache.cassandra.service.ClientState;
-import org.apache.cassandra.service.QueryState;
-
-public class UseStatement extends ParsedStatement implements CQLStatement
-{
-    private final String keyspace;
-
-    public UseStatement(String keyspace)
-    {
-        this.keyspace = keyspace;
-    }
-
-    public int getBoundTerms()
-    {
-        return 0;
-    }
-
-    public Prepared prepare() throws InvalidRequestException
-    {
-        return new Prepared(this);
-    }
-
-    public void checkAccess(ClientState state) throws UnauthorizedException
-    {
-        state.validateLogin();
-    }
-
-    public void validate(ClientState state) throws InvalidRequestException
-    {
-    }
-
-    public ResultMessage execute(QueryState state, QueryOptions options) throws InvalidRequestException
-    {
-        state.getClientState().setKeyspace(keyspace);
-        return new ResultMessage.SetKeyspace(keyspace);
-    }
-
-    public ResultMessage executeInternal(QueryState state, QueryOptions options)
-    {
-        // Internal queries are exclusively on the system keyspace and 'use' is thus useless
-        throw new UnsupportedOperationException();
-    }
-}

cql3/statements/use_statement.hh

@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+
+/*
+ * Copyright 2014 Cloudius Systems
+ *
+ * Modified by Cloudius Systems
+ */
+
+#ifndef CQL3_STATEMENTS_USE_STATEMENT_HH
+#define CQL3_STATEMENTS_USE_STATEMENT_HH
+
+#include "cql3/statements/parsed_statement.hh"
+#include "cql3/cql_statement.hh"
+
+namespace cql3 {
+
+namespace statements {
+
+class use_statement : public parsed_statement, public virtual cql_statement {
+private:
+    const sstring _keyspace;
+
+public:
+    use_statement(sstring keyspace)
+        : _keyspace(keyspace)
+    { }
+
+    virtual int get_bound_terms() override {
+        return 0;
+    }
+
+    virtual prepared prepare() override {
+        return parsed_statement::prepared(*this);
+    }
+
+    virtual void check_access(const service::client_state& state) override {
+        state.validate_login();
+    }
+
+    virtual void validate(const service::client_state& state) override {
+    }
+
+    virtual transport::messages::result_message execute(service::query_state& state, const query_options& options) {
+        throw std::runtime_error("not implemented");
+#if 0
+        state.getClientState().setKeyspace(keyspace);
+        return new ResultMessage.SetKeyspace(keyspace);
+#endif
+    }
+
+    virtual transport::messages::result_message execute_internal(service::query_state& state, const query_options& options) override {
+        // Internal queries are exclusively on the system keyspace and 'use' is thus useless
+        throw std::runtime_error("unsupported operation");
+    }
+};
+
+}
+
+}
+
+#endif

service/client_state.hh

@@ -4,7 +4,11 @@
 namespace service {
 
 class client_state {
+public:
     // FIXME: stub
+
+    void validate_login() const {
+    }
 };
 
 }