private static DMSDbProvider GetProvider(DMSDbType dbType)
{
Type type = typeof(DMS.MssqlObject);
if (dbType != DMSDbType.MsSql)
{
switch (dbType)
{
case DMSDbType.Access:
type = typeof(DMS.AccessObject);
break;
case DMSDbType.Mysql:
type = typeof(DMS.MysqlObject);
break;
case DMSDbType.Oracle:
type = typeof(DMS.OracleObject);
break;
case DMSDbType.SQLite:
type = typeof(DMS.SQLiteObject);
break;
default:
break;
}
}
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(type);
var provider = DMSExpression.GetDbProvider(attribute.DMSDbType, attribute.ConfigName);
return(provider);
}
/// <summary>
///
/// </summary>
/// <param name="attribute"></param>
/// <returns></returns>
public static string[] GetPrimaryKey(this TableMappingAttribute attribute)
{
if (attribute == null || string.IsNullOrEmpty(attribute.PrimaryKey))
{
return(new string[] { });
}
return(attribute.PrimaryKey.Split(new char[] { ',' }));
}
/// <summary>
/// 获取类的DMSDbType名称
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static DMSDbType GetDMSDbType(this Type type)
{
TableMappingAttribute attribute = ReflectionUtils.GetAttribute <TableMappingAttribute>(type);
if (attribute == null)
{
return(DMSDbType.MsSql);
}
return(attribute.DMSDbType);
}
/// <summary>
/// 获取类的MAPPING名称
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static string GetEntityName(this Type type)
{
TableMappingAttribute attribute = ReflectionUtils.GetAttribute <TableMappingAttribute>(type);
if (attribute == null)
{
return(type.Name);
}
return(attribute.Name);
}
internal static TableMappingAttribute GetTableMappingAttribute(Type type)
{
TableMappingAttribute attribute = ReflectionUtils.GetAttribute <TableMappingAttribute>(type, true, new TableMappingAttribute()
{
ConfigName = ConstExpression.TableConfigDefaultValue,
Name = type.Name,
DMSDbType = DMSDbType.MsSql,
TokenFlag = true,
});
return(attribute);
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="TResult"></typeparam>
/// <param name="dms"></param>
/// <param name="strSql"></param>
/// <param name="dbParams"></param>
/// <returns></returns>
public static IEnumerable <TResult> Query <T, TResult>(this DMS <T> dms, string strSql, dynamic dbParams)
where T : class
where TResult : class
{
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(typeof(T));
var provider = DMSExpression.GetDbProvider(attribute.DMSDbType, attribute.ConfigName);
using (var conn = provider.GetOpenConnection())
{
return(DMSFrame.Access.DMSDbAccess.Query <TResult>(conn, typeof(TResult).FullName, strSql, dbParams, 0, null, true, 30));
}
}
/// <summary>
/// 获取实体的MAPPING名称
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static string GetEntityTableMappingConfigName(this Type type)
{
TableMappingAttribute attribute = ReflectionUtils.GetAttribute <TableMappingAttribute>(type);
if (attribute == null || string.IsNullOrEmpty(attribute.ConfigName))
{
return(ConstExpression.TableConfigDefaultValue);
}
if (string.IsNullOrEmpty(attribute.ConfigName))
{
return(ConstExpression.TableConfigDefaultValue);
}
return(attribute.ConfigName);
}
/// <summary>
/// 获取实体的MAPPING名称
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public static string GetEntityTableMappingName(this IEntity entity)
{
if (entity == null)
{
return(null);
}
TableMappingAttribute attribute = ReflectionUtils.GetAttribute <TableMappingAttribute>(entity.GetType());
if (attribute == null)
{
return(entity.GetType().Name);
}
return(attribute.Name);
}
/// <summary>
///
/// </summary>
/// <param name="elementType"></param>
private void changeInternalDbProvider(Type elementType)
{
if (elementType == null)
{
return;
}
if (InternalDbProvider != null)
{
return;
}
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(elementType);
string configName = attribute == null ? ConstExpression.TableConfigConfigName : attribute.ConfigName;
this.InternalDbProvider = DMSExpression.GetDbProvider(attribute == null ? DMSDbType.MsSql : attribute.DMSDbType, configName);
}
/// <summary>
///
/// </summary>
/// <param name="type"></param>
/// <param name="bDataBase"></param>
/// <param name="bWithLock"></param>
/// <param name="bNeedParams"></param>
/// <param name="bNeedQueryProvider"></param>
protected DMS(Type type, string bDataBase, bool bWithLock, bool bNeedParams, bool bNeedQueryProvider)
{
DMSFrameException.ThrowIfNull(type);
this.DataType = type;
this.CurrentType = type;
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(type);
this.TableExpressioin = DMSExpression.GetTableExpression(attribute.DMSDbType);
this.ColumnsExpressioin = DMSExpression.GetColumnsExpression(attribute.DMSDbType);
this.WhereExpressioin = DMSExpression.GetWhereExpression(attribute.DMSDbType);
this.OrderByExpressioin = DMSExpression.GetOrderByExpression(attribute.DMSDbType);
this.GroupByExpression = DMSExpression.GetGroupByExpression(attribute.DMSDbType);
this.HavingExpression = DMSExpression.GetHavingExpression(attribute.DMSDbType);
this.SplitExpression = DMSExpression.GetSplitExpression(attribute);
this.Provider = DMSExpression.GetDbProvider(attribute.DMSDbType, attribute.ConfigName);
this.dynamicParameters = new DynamicParameters();
DMSFrameException.ThrowIfNull(this.TableExpressioin, this.ColumnsExpressioin, this.WhereExpressioin, this.OrderByExpressioin, this.GroupByExpression, this.HavingExpression);
if (!string.IsNullOrEmpty(bDataBase))
{
this.TableExpressioin.bDataBase = bDataBase;
DMSDataBase myDb = new DMSDataBase(bDataBase);
this.TableExpressioin.Append <DMSDataBase, DMSDataBase>(q => myDb);
}
this.TableExpressioin.WithLock = bWithLock;
this.ExcuteType = DMSExcuteType.SELECT;
this.TableExpressioin.NeedParams = bNeedParams;
this.ColumnsExpressioin.NeedParams = bNeedParams;
this.WhereExpressioin.NeedParams = bNeedParams;
this.OrderByExpressioin.NeedParams = bNeedParams;
this.GroupByExpression.NeedParams = bNeedParams;
this.HavingExpression.NeedParams = bNeedParams;
this.TableExpressioin.SplitExpression = this.SplitExpression;
this.ColumnsExpressioin.SplitExpression = this.SplitExpression;
this.WhereExpressioin.SplitExpression = this.SplitExpression;
this.OrderByExpressioin.SplitExpression = this.SplitExpression;
this.GroupByExpression.SplitExpression = this.SplitExpression;
this.HavingExpression.SplitExpression = this.SplitExpression;
}
internal static DMSSplitExpressionVistor GetSplitExpression(TableMappingAttribute attribute)
{
DMSSplitExpressionVistor result;
switch (attribute.DMSDbType)
{
case DMSDbType.MsSql:
default:
result = new DMSSplitMssqlExpressionVistor();
break;
case DMSDbType.Mysql:
result = new DMSFrame.Visitor.Mysql.DMSSplitMysqlExpressionVistor();
break;
}
if (result != null)
{
result.TableMapping = attribute;
}
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static string[] GetPrimaryKey(this Type type)
{
TableMappingAttribute attribute = ReflectionUtils.GetAttribute <TableMappingAttribute>(type);
return(GetPrimaryKey(attribute));
}
/// <summary>
///
/// </summary>
/// <param name="modify"></param>
/// <param name="genericType"></param>
/// <param name="expr"></param>
protected virtual void AppendColumnExpression(bool modify, Type genericType, Expression expr)
{
if (expr == null)
{
return;
}
NewArrayExpression newArrayExpression2 = null;
if (this.ExcuteType == DMSExcuteType.SELECT)
{
if (expr.Type.IsPrimitive())
{
if (expr is MemberExpression)
{
//q.Column
newArrayExpression2 = InitializerExpression(newArrayExpression2, expr as MemberExpression);
}
else if (expr is MethodCallExpression)
{
//q.Column.Desc()
MethodCallExpression methodCallExpression = expr as MethodCallExpression;
if (expr != null)
{
Expression convertExpr = Expression.MakeUnary(ExpressionType.Convert, expr, typeof(object));
newArrayExpression2 = Expression.NewArrayInit(typeof(object), convertExpr);
}
}
else if (expr is ConstantExpression)
{
//q=>*
var convertExpr = Expression.MakeUnary(ExpressionType.Convert, expr, typeof(object));
if (newArrayExpression2 == null)
{
newArrayExpression2 = Expression.NewArrayInit(typeof(object), convertExpr);
}
else
{
NewArrayExpression newArrayExpression3 = Expression.NewArrayInit(typeof(object), convertExpr);
IEnumerable <Expression> initializers = newArrayExpression2.Expressions.Concat(newArrayExpression3.Expressions);
newArrayExpression2 = Expression.NewArrayInit(typeof(object), initializers);
}
}
}
else if (expr is ParameterExpression)
{
// q => q;
if (newArrayExpressionCache.ContainsKey(expr.Type.AssemblyQualifiedName))
{
newArrayExpression2 = newArrayExpressionCache[expr.Type.AssemblyQualifiedName];
}
else
{
NewArrayExpression newArrayExpression3 = null;
ParameterExpression paramExpr = expr as ParameterExpression;
PropertyInfo[] propertyInfos = expr.Type.GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (PropertyInfo item in propertyInfos)
{
MemberExpression memberExpr = Expression.Property(paramExpr, item);
newArrayExpression3 = InitializerExpression(newArrayExpression3, memberExpr);
}
lock (newArrayExpressionCache)
{
if (!newArrayExpressionCache.ContainsKey(expr.Type.AssemblyQualifiedName))
{
newArrayExpressionCache.Add(expr.Type.AssemblyQualifiedName, newArrayExpression3);
}
}
newArrayExpression2 = newArrayExpression3;
}
}
else if (expr is NewExpression)
{
//q=> new {}
Expression convertExpr = Expression.MakeUnary(ExpressionType.Convert, expr, typeof(object));
newArrayExpression2 = Expression.NewArrayInit(typeof(object), convertExpr);
}
else if (expr is MethodCallExpression)
{
// q => q.Columns(q.Column0,q.Column1)
// q => q.NewGuid()
MethodCallExpression methodCallExpression = expr as MethodCallExpression;
if (DMSExpression.ColumnsFuncString.Contains(methodCallExpression.Method.Name))
{
newArrayExpression2 = Expression.NewArrayInit(typeof(object), methodCallExpression);
}
else if (DMSExpression.ArrayInitFuncString.Contains(methodCallExpression.Method.Name))
{
if (expr != null)
{
newArrayExpression2 = methodCallExpression.Arguments[1] as NewArrayExpression;
}
}
else
{
Log.Debug(ReflectionUtils.GetMethodBaseInfo(System.Reflection.MethodBase.GetCurrentMethod()), "no supported " + methodCallExpression.Method.Name, null);
throw new NotSupportedException("no supported " + methodCallExpression.Method.Name);
}
}
else if (expr is LambdaExpression)
{
}
else if (expr is NewArrayExpression)
{
newArrayExpression2 = (NewArrayExpression)expr;
}
}
else if (this.ExcuteType == DMSExcuteType.UPDATE ||
this.ExcuteType == DMSExcuteType.INSERT ||
this.ExcuteType == DMSExcuteType.INSERTIDENTITY ||
this.ExcuteType == DMSExcuteType.INSERT_SELECT ||
this.ExcuteType == DMSExcuteType.UPDATE_WHERE)
{
if (expr is ConstantExpression)
{
ConstantExpression consExpr = expr as ConstantExpression;
Type elementType = consExpr.Value != null?consExpr.Value.GetType() : consExpr.Type;
if (elementType == typeof(IDictionary <string, object>) || elementType == typeof(Dictionary <string, object>))
{
TableMappingAttribute attribute = GetTableMappingAttribute(genericType);
string[] primaryKeys = attribute.GetPrimaryKey();
foreach (KeyValuePair <string, object> item in (IDictionary <string, object>)consExpr.Value)
{
if (item.Value == null)
{
Log.Debug(ReflectionUtils.GetMethodBaseInfo(System.Reflection.MethodBase.GetCurrentMethod()), string.Format("{0}不能为空值", item.Key), null);
throw new DMSFrameException(string.Format("{0}不能为空值", item.Key));
}
PropertyInfo propertyInfo = genericType.GetProperty(item.Key, BindingFlags.Instance | BindingFlags.Public);
this.AppendColumnExpression(genericType, primaryKeys, item.Key, item.Value, propertyInfo, ref newArrayExpression2);
}
}
else if (elementType.IsClass)
{
TableMappingAttribute attribute = GetTableMappingAttribute(elementType);
string[] primaryKeys = attribute.GetPrimaryKey();
foreach (System.Reflection.PropertyInfo item in elementType.GetProperties(BindingFlags.Instance | BindingFlags.Public))
{
object itemValue = item.GetValue(consExpr.Value, null);
if (itemValue != null)
{
this.AppendColumnExpression(elementType, primaryKeys, item.Name, itemValue, item, ref newArrayExpression2);
}
}
}
}
else if (expr is MemberInitExpression)
{
MemberInitExpression expr0 = (MemberInitExpression)expr;
Expression convertExpr = Expression.MakeUnary(ExpressionType.Convert, expr0, expr.Type);
newArrayExpression2 = Expression.NewArrayInit(expr.Type, convertExpr);
}
}
if (newArrayExpression2 != null)
{
if (this.Expression != null)
{
//合并之前
NewArrayExpression newArrayExpression = this.Expression as NewArrayExpression;
IEnumerable <Expression> initializers = newArrayExpression.Expressions.Concat(newArrayExpression2.Expressions);
newArrayExpression2 = Expression.NewArrayInit(typeof(object), initializers);
}
if (modify)
{
this.Expression = this.Modify(newArrayExpression2);
}
else
{
this.Expression = newArrayExpression2;
}
}
}
