79 lines
3.7 KiB
C++
79 lines
3.7 KiB
C++
////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2015 Realm Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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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#ifndef REALM_QUERY_BUILDER_HPP
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#define REALM_QUERY_BUILDER_HPP
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#include <string>
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#include "parser.hpp"
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#include "object_accessor.hpp"
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namespace realm {
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class Query;
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class Schema;
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namespace query_builder {
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class Arguments;
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void apply_predicate(Query &query, parser::Predicate &predicate, Arguments &arguments, Schema &schema, std::string objectType);
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class Arguments
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{
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public:
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virtual bool bool_for_argument(size_t argument_index) = 0;
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virtual long long long_for_argument(size_t argument_index) = 0;
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virtual float float_for_argument(size_t argument_index) = 0;
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virtual double double_for_argument(size_t argument_index) = 0;
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virtual std::string string_for_argument(size_t argument_index) = 0;
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virtual DateTime datetime_for_argument(size_t argument_index) = 0;
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virtual size_t object_index_for_argument(size_t argument_index) = 0;
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virtual bool is_argument_null(size_t argument_index) = 0;
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};
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template<typename ValueType, typename ContextType>
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class ArgumentConverter : public Arguments
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{
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public:
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ArgumentConverter(ContextType context, std::vector<ValueType> arguments) : m_arguments(arguments), m_ctx(context) {};
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using Accessor = realm::NativeAccessor<ValueType, ContextType>;
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virtual bool bool_for_argument(size_t argument_index) { return Accessor::to_bool(m_ctx, argument_at(argument_index)); }
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virtual long long long_for_argument(size_t argument_index) { return Accessor::to_long(m_ctx, argument_at(argument_index)); }
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virtual float float_for_argument(size_t argument_index) { return Accessor::to_float(m_ctx, argument_at(argument_index)); }
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virtual double double_for_argument(size_t argument_index) { return Accessor::to_double(m_ctx, argument_at(argument_index)); }
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virtual std::string string_for_argument(size_t argument_index) { return Accessor::to_string(m_ctx, argument_at(argument_index)); }
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virtual DateTime datetime_for_argument(size_t argument_index) { return Accessor::to_datetime(m_ctx, argument_at(argument_index)); }
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virtual size_t object_index_for_argument(size_t argument_index) { return Accessor::to_existing_object_index(m_ctx, argument_at(argument_index)); }
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virtual bool is_argument_null(size_t argument_index) { return Accessor::is_null(m_ctx, argument_at(argument_index)); }
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private:
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std::vector<ValueType> m_arguments;
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ContextType m_ctx;
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ValueType &argument_at(size_t index) {
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if (index >= m_arguments.size()) {
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throw std::out_of_range((std::string)"Argument index " + std::to_string(index) + " out of range 0.." + std::to_string(m_arguments.size()-1));
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}
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return m_arguments[index];
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}
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};
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}
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}
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#endif // REALM_QUERY_BUILDER_HPP
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