0f2a1dffb6
It's compared with size_t and is set from size_t. To avoid ugly casts
we can store it as unsigned int. It's always positive anyway. Origin
uses signed int ("int") because there is no unsigned int in Java.
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright 2014 Cloudius Systems
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*
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* Modified by Cloudius Systems
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*/
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#ifndef CQL3_CQL_STATEMENT_HH
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#define CQL3_CQL_STATEMENT_HH
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#include "transport/messages/result_message.hh"
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#include "service/client_state.hh"
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#include "service/query_state.hh"
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#include "service/storage_proxy.hh"
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#include "cql3/query_options.hh"
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#include "database.hh"
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namespace cql3 {
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class cql_statement {
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public:
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virtual ~cql_statement()
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{ }
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virtual uint32_t get_bound_terms() = 0;
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/**
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* Perform any access verification necessary for the statement.
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*
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* @param state the current client state
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*/
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virtual void check_access(const service::client_state& state) = 0;
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/**
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* Perform additional validation required by the statment.
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* To be overriden by subclasses if needed.
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*
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* @param state the current client state
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*/
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virtual void validate(const service::client_state& state) = 0;
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/**
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* Execute the statement and return the resulting result or null if there is no result.
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*
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* @param state the current query state
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* @param options options for this query (consistency, variables, pageSize, ...)
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*/
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virtual future<::shared_ptr<transport::messages::result_message>>
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execute(service::storage_proxy& proxy, service::query_state& state, const query_options& options) = 0;
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/**
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* Variant of execute used for internal query against the system tables, and thus only query the local node = 0.
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*
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* @param state the current query state
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*/
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virtual future<::shared_ptr<transport::messages::result_message>>
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execute_internal(database& db, service::query_state& state, const query_options& options) = 0;
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virtual bool uses_function(const sstring& ks_name, const sstring& function_name) const = 0;
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};
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}
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#endif
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