99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
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#ifndef HGL_DB_FIELD_INCLUDE
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#define HGL_DB_FIELD_INCLUDE
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#include<hgl/db/FieldType.h>
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namespace hgl
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{
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namespace db
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{
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/**
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* 字段基类
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*/
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class Field
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{
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FieldType *field_type;
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public:
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const FieldType *GetFieldType()const{return field_type;} ///<获取字段类型
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public:
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Field(FieldType *ft):field_type(ft){}
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virtual ~Field()
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{
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if(field_type)
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delete field_type;
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}
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};//class Field
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/**
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* 单个数据字段模板基类
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*/
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template<typename T> class FieldSingleValue:public Field
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{
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public:
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using Field::Field;
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virtual ~FieldSingleValue()=default;
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};//template<typename T> class FieldSingleValue:public Field
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class FieldArrayBase:public Field
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{
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protected:
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FieldArrayType *array_type;
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public:
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FieldArrayBase(FieldArrayType *fa):Field(fa),array_type(fa){}
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virtual ~FieldArrayBase()=default;
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const FieldBaseType GetMemberType ()const{return array_type?array_type->GetMemberType():FieldBaseType::ERROR_TYPE;}
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const uint64 GetLength ()const{return array_type?array_type->GetLength():-1;}
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};//class FieldVarArray:public Field
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template<typename T> class FieldArray:public FieldArrayBase
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{
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public:
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using FieldArrayBase::FieldArrayBase;
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virtual ~FieldArray()=default;
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};//template<typename T> class FieldArray:public FieldArrayBase
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#define FIELD_TYPE_DEFINE(type_name,type) using Field##type_name=FieldSingleValue<type>; \
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using Field##type_name##Array=FieldArray<type>;
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FIELD_TYPE_DEFINE(Bool, bool)
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FIELD_TYPE_DEFINE(Int8, int8)
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FIELD_TYPE_DEFINE(Int16, int16)
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FIELD_TYPE_DEFINE(Int32, int32)
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FIELD_TYPE_DEFINE(Int64, int64)
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FIELD_TYPE_DEFINE(Uint8, uint8)
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FIELD_TYPE_DEFINE(Uint16, uint16)
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FIELD_TYPE_DEFINE(Uint32, uint32)
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FIELD_TYPE_DEFINE(Uint64, uint64)
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FIELD_TYPE_DEFINE(Float, float)
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FIELD_TYPE_DEFINE(Double, double)
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FIELD_TYPE_DEFINE(Char, char)
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FIELD_TYPE_DEFINE(UTF16, u16char)
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#undef FIELD_TYPE_DEFINE
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class FieldStruct:public Field
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{
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FieldStructType *struct_type;
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public:
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FieldStruct(FieldStructType *fs):Field(fs),struct_type(fs){}
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virtual ~FieldStruct()=default;
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};//class FieldStruct:public Field
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}//namespace db
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}//namespace hgl
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#endif//HGL_DB_FIELD_INCLUDE
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