Exemplo n.º 1
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        private DbCommand GetDbCommand(Type entityType, params SortInfo[] orderBy)
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(entityType);
            List <PropertyInfo> fieldPropertyList = new List <PropertyInfo>();
            string tableName = entityInfo.MappingTableAttribute.TableName;
            string sqlSelect = string.Format("SELECT {0}", GetSelectStatement(entityInfo));

            DbCommand dbCommand = GetDbCommandByEntity(fieldPropertyList, null);

            sqlSelect             = sqlSelect + this.ToOrderByClause(entityType, orderBy);
            dbCommand.CommandText = sqlSelect;
            return(dbCommand);
        }
Exemplo n.º 2
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        public static string GetEntityInfoMessage(object entity)
        {
            TypeSchema    entityInfo  = ORMSchemaCache.GetTypeSchema(entity.GetType());
            StringBuilder infoBuilder = new StringBuilder();

            infoBuilder.AppendLine("Entity Type: " + entity.GetType().FullName);
            foreach (SchemaItem mfi in entityInfo.GetKeyFieldInfos())
            {
                PropertyInfo property = mfi.ProInfo;
                infoBuilder.AppendLine("[" + property.Name + "]: " + property.GetValue(entity, null));
            }
            return(infoBuilder.ToString());
        }
Exemplo n.º 3
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        public static void EntityIsMappingDatabase(Type type, string message)
        {
            TypeSchema entityInfo = ORMSchemaCache.GetTypeSchema(type);

            if (entityInfo.MappingTableAttribute == null)
            {
                throw new ORMException(message);
            }
            if (entityInfo.GetKeyFieldInfos() == null || entityInfo.GetKeyFieldInfos().Count == 0)
            {
                throw new ORMException(message);
            }
        }
Exemplo n.º 4
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        /// <summary>
        /// 得到新增数据库中某一对象的DbCommand,modifyCommandCreator的属性Entity不能为空
        /// </summary>
        /// <exception cref="RException(DatabaseErrorCode.CommandTextIsEmpty - 0x00010102)">
        /// 属性Entity为null时,引发此异常
        /// </exception>
        /// <returns>新增数据库中某一对象的DbCommand,DbCommand的参数为所传入的Entity的属性</returns>
        public override DbCommand GetDbCommand()
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(Entity.GetType());
            List <PropertyInfo> fieldPropertyList = null;
            string sqlInsert = string.Format("INSERT INTO {0} {1}"
                                             , GetQuotedName(entityInfo.MappingTableAttribute.TableName)
                                             , GetInsertStatement(entityInfo, out fieldPropertyList));

            DbCommand dbCommand = GetDbCommandByEntity(fieldPropertyList, this.Entity);

            dbCommand.CommandText = sqlInsert;
            return(dbCommand);
        }
Exemplo n.º 5
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        private DbCommand GetDbCommand(object entity, string[] filedProterties, params SortInfo[] orderBy)
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(entity.GetType());
            List <PropertyInfo> fieldPropertyList = null;
            string tableName = entityInfo.MappingTableAttribute.TableName;
            string sqlSelect = string.Format("SELECT {0}",
                                             GetSelectStatement(entityInfo, out fieldPropertyList, filedProterties));

            DbCommand dbCommand = GetDbCommandByEntity(fieldPropertyList, entity);

            sqlSelect             = sqlSelect + this.ToOrderByClause(entity.GetType(), orderBy);
            dbCommand.CommandText = sqlSelect;
            return(dbCommand);
        }
Exemplo n.º 6
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        /// <summary>
        /// 得到修改数据库中某一对象的DbCommand,modifyCommandCreator的属性Entity不能为空
        /// </summary>
        /// <exception cref="RException(DatabaseErrorCode.CommandTextIsEmpty - 0x00010102)">
        /// 属性Entity为null时,引发此异常
        /// </exception>
        /// <returns>修改数据库中某一对象的DbCommand,DbCommand的参数为所传入的Entity的属性</returns>
        public override DbCommand GetDbCommand()
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(Entity.GetType());
            List <PropertyInfo> fieldPropertyList = null;

            string sqlUpdate = string.Format("UPDATE {0} SET {1}"
                                             , GetQuotedName(entityInfo.MappingTableAttribute.TableName)
                                             , GetUpdateStatement(entityInfo, out fieldPropertyList));

            DbCommand dbCommand = GetDbCommandByEntity(fieldPropertyList, Entity);

            dbCommand.CommandText = sqlUpdate;
            return(dbCommand);
        }
Exemplo n.º 7
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        /// <summary>
        /// 构建无where条件查询的sql语句
        /// </summary>
        /// <returns>sql语句</returns>
        private string GetSelectStatement(TypeSchema entityInfo)
        {
            string fields = "";

            foreach (SchemaItem mfi in entityInfo.GetAllFieldInfos())
            {
                if (fields != "")
                {
                    fields += ",";
                }
                fields += GetQuotedName(mfi.MappingFieldAttribute.FieldName);
            }

            return(string.Format("{0} FROM {1}", fields, this.GetQuotedName(entityInfo.MappingTableAttribute.TableName)));
        }
Exemplo n.º 8
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        private DbCommand GetDbCommand(Criteria cri)
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(EntityType);
            List <PropertyInfo> fieldPropertyList = new List <PropertyInfo>();
            DbCommand           dbCommand         = GetDbCommandByEntity(fieldPropertyList, null);

            List <DbParameter> parameters;
            string             sqlDelete = string.Format("DELETE FROM {0} WHERE 1=1 {1}"
                                                         , GetQuotedName(entityInfo.MappingTableAttribute.TableName)
                                                         , cri.GenerateExpression(EntityType, out parameters, DbAccess));

            dbCommand.Parameters.AddRange(parameters.ToArray());
            dbCommand.CommandText = sqlDelete;
            return(dbCommand);
        }
Exemplo n.º 9
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        private DbCommand GetDbCommand(Criteria criteria, params SortInfo[] orderBy)
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(this.ObjectType);
            List <PropertyInfo> fieldPropertyList = new List <PropertyInfo>();
            string sqlSelect = string.Format("SELECT {0}", GetSelectStatement(entityInfo));

            DbCommand          dbCommand = GetDbCommandByEntity(fieldPropertyList, null);
            List <DbParameter> parameters;

            sqlSelect = sqlSelect + " WHERE 1=1 " + criteria.GenerateExpression(this.ObjectType, out parameters, DbAccess);
            sqlSelect = sqlSelect + this.ToOrderByClause(this.ObjectType, orderBy);

            dbCommand.Parameters.AddRange(parameters.ToArray());
            dbCommand.CommandText = sqlSelect;
            return(dbCommand);
        }
Exemplo n.º 10
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        private string GetDeleteStatement(TypeSchema entityInfo, out List <PropertyInfo> fieldPropertyList)
        {
            string query = "";

            fieldPropertyList = new List <PropertyInfo>();
            foreach (SchemaItem mfi in entityInfo.GetKeyFieldInfos())
            {
                if (query != "")
                {
                    query += " AND ";
                }
                query += GetQuotedName(mfi.MappingFieldAttribute.FieldName) + "=@" + mfi.ProInfo.Name;
                fieldPropertyList.Add(mfi.ProInfo);
            }
            return(string.Format("WHERE {0}", query));
        }
Exemplo n.º 11
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        internal static TypeSchema GetTypeSchema(Type objectType)
        {
            TypeSchema entityInfo = null;

            if (!_entityInfos.TryGetValue(objectType, out entityInfo))
            {
                lock (o)
                {
                    if (!_entityInfos.TryGetValue(objectType, out entityInfo))
                    {
                        entityInfo = new TypeSchema(objectType);
                        _entityInfos.Add(objectType, entityInfo);
                    }
                }
            }

            return(entityInfo);
        }
Exemplo n.º 12
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        protected DbCommand GetDbCommandByKeyValue(TypeSchema entityInfo, object keyValue)
        {
            DbCommand dbCommand = DbAccess.CreateDbCommand();

            foreach (SchemaItem mfi in entityInfo.GetKeyFieldInfos())
            {
                Type type = mfi.ProInfo.PropertyType;
                type = Nullable.GetUnderlyingType(type) ?? type;
                DbType      dbType    = ORMHelper.GetDbTypeByName(type.Name);
                DbParameter parameter = DbAccess.CreateDbParameter();
                parameter.ParameterName = "@" + mfi.ProInfo.Name;
                parameter.DbType        = dbType;

                //parameter.Value = Convert.ChangeType(keyValue, fieldProperty.PropertyType);
                parameter.Value = Convert.ChangeType(keyValue, type);
                dbCommand.Parameters.Add(parameter);
            }
            return(dbCommand);
        }
Exemplo n.º 13
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        /// <summary>
        /// 构建select count()语句
        /// </summary>
        /// <returns></returns>
        private DbCommand GetCountDbCommand(object entity, string[] filterPerproties)
        {
            TypeSchema          entityInfo        = ORMSchemaCache.GetTypeSchema(entity.GetType());
            List <PropertyInfo> fieldPropertyList = null;
            string sqlSelect = "";

            if (filterPerproties == null)
            {
                sqlSelect         = string.Format("SELECT COUNT(*) FROM {0}", this.GetQuotedName(entityInfo.MappingTableAttribute.TableName));
                fieldPropertyList = new List <PropertyInfo>();//初始化fieldPropertyList,仅仅为了给GetDbCommandByEntity提供无元素的List
            }
            else
            {
                sqlSelect = string.Format("SELECT {0}", GetCountSelectStatement(entityInfo, out fieldPropertyList, filterPerproties));
            }
            DbCommand dbCommand = GetDbCommandByEntity(fieldPropertyList, entity);

            dbCommand.CommandText = sqlSelect;
            return(dbCommand);
        }
Exemplo n.º 14
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        internal virtual void Init(Type objectType, IDbAccess dbAccess)
        {
            TypeSchema entityInfo = ORMSchemaCache.GetTypeSchema(objectType);
            SchemaItem fieldInfo  = entityInfo.GetFieldInfoByPropertyName(this._propertyName);

            if (fieldInfo == null)
            {
                throw new ArgumentException(string.Format("{0} - Property \"{1}\" not define a mapping field.", this.GetType(), _propertyName));
            }
            Type type = fieldInfo.ProInfo.PropertyType;

            type = Nullable.GetUnderlyingType(type) ?? type;
            if (type.IsEnum)
            {
                this._dbType = DbType.Int32;
            }
            else
            {
                this._dbType = ORMHelper.GetDbTypeByName(type.Name);
            }
            this._fieldName = fieldInfo.MappingFieldAttribute.FieldName;
            this._dbAccess  = dbAccess;
        }
Exemplo n.º 15
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        private string ToOrderByClause(Type entityType, params SortInfo[] orderBy)
        {
            TypeSchema entityInfo = ORMSchemaCache.GetTypeSchema(entityType);
            string     orderByStr = "";

            if (null != orderBy && orderBy.Length > 0)
            {
                foreach (SortInfo tempSortInfo in orderBy)
                {
                    SchemaItem fieldInfo = entityInfo.GetFieldInfoByPropertyName(tempSortInfo.PropertyName);
                    if (fieldInfo == null)
                    {
                        throw new ArgumentException("Sort property not define a mapping field. - \"" + tempSortInfo.PropertyName + "\"");
                    }
                    string tempName = GetQuotedName(fieldInfo.MappingFieldAttribute.FieldName);
                    if (tempSortInfo.Direction == SortDirection.Desc)
                    {
                        orderByStr += "," + tempName + " Desc";
                    }
                    else
                    {
                        orderByStr += "," + tempName;
                    }
                }

                if (orderByStr.Length > 0)
                {
                    orderByStr = orderByStr.Substring(1); //remove the first char ','.
                }
                return(string.Format(" ORDER BY {0}", orderByStr));
            }
            else
            {
                return(orderByStr);
            }
        }
Exemplo n.º 16
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        internal static List <SchemaItem> GetSchemaItems(Type objectType)
        {
            TypeSchema entityInfo = GetTypeSchema(objectType);

            return(entityInfo.GetAllFieldInfos());
        }