value_comparand.h

/*
 Copyright (c) 2013 by ScaleOut Software, Inc.

 Licensed 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.
*/ 

#pragma once

#include <string>
#include <ostream>
#include <vector>
#include <stdint.h>
#include <boost/shared_ptr.hpp>

#include "soss_client/filter.h"
#include "soss_client/query_expression.h"
#include "soss_client/expression_comparand.h"

namespace sosscli {

namespace internal { class ValueHolder; class TypeSignature; class IndexValueWriter; }
class ReferenceComparand;

class ValueComparand : public ExpressionComparand
{

public:

 ValueComparand(std::string const & value);

 ValueComparand(char const * value);

 ValueComparand(wchar_t const * value);

 ValueComparand(std::wstring const & value);

 ValueComparand(uint8_t const * value, size_t length);

 ValueComparand(std::vector<uint8_t> const & value);

 ValueComparand(sosscli::internal::TypeSignature const & value);

 ValueComparand(int32_t value);

 ValueComparand(uint32_t value);

 ValueComparand(int64_t value);

 ValueComparand(uint64_t value);

 ValueComparand(double value);

 ValueComparand(float value);

 ValueComparand(bool value);

 Filter operator ==(ReferenceComparand const & field_ref);

 Filter operator !=(ReferenceComparand const & field_ref);

 Filter operator >(ReferenceComparand const & field_ref);

 Filter operator >=(ReferenceComparand const & field_ref);

 Filter operator <(ReferenceComparand const & field_ref);

 Filter operator <=(ReferenceComparand const & field_ref);

 Filter contains(ReferenceComparand const & ref);

 static ValueComparand null();

 int type_code() const;

 bool is_string_type() const;

 virtual void accept(QueryExpression::Visitor & v) const;

 friend std::ostream & operator << (std::ostream & o, ValueComparand const & p);

 void allocate_value(sosscli::internal::IndexValueWriter & writer) const;

 void allocate_value_as(sosscli::internal::IndexValueWriter & writer, int type_code) const;

 int write_value(sosscli::internal::IndexValueWriter & writer) const;

 int write_value_as(sosscli::internal::IndexValueWriter & writer, int type_code) const;

private:
 ValueComparand(boost::shared_ptr<sosscli::internal::ValueHolder> value_p);

 boost::shared_ptr<sosscli::internal::ValueHolder> value_p_;
};

}