private void AddConstraint(PropertyCompareOperator op, IManagedProperty property, Type propertyOwner = null)
{
if (_pending == null)
{
throw new InvalidOperationException("查询构造出错：你必须先调用方法 Constrain。");
}
//如果没有指定属性对应的实体类型，则使用当前仓库对应的实体来作为属性的拥有者。
var leftPropertyOwner = _pendingOwner;
if (leftPropertyOwner == null)
{
leftPropertyOwner = _pending.OwnerType;
if (_repo.EntityType.IsSubclassOf(leftPropertyOwner))
{
leftPropertyOwner = _repo.EntityType;
}
}
var constraint = new TwoPropertiesConstraint
{
Context = this,
LeftProperty = _pending,
LeftPropertyOwner = leftPropertyOwner,
Operator = op,
RightProperty = property,
RightPropertyOwner = propertyOwner
};
this.AddConstraint(constraint);
_pending = null;
_pendingOwner = null;
}
private void AddConstraint(PropertyCompareOperator op, object val)
{
if (_pending == null)
{
throw new InvalidOperationException("查询构造出错：你必须先调用方法 Constrain。");
}
//如果没有指定属性对应的实体类型，则使用当前仓库对应的实体来作为属性的拥有者。
var propertyOwner = _pendingOwner;
if (propertyOwner == null)
{
propertyOwner = _pending.OwnerType;
if (_repo.EntityType.IsSubclassOf(propertyOwner))
{
propertyOwner = _repo.EntityType;
}
}
var constraint = new PropertyConstraint
{
Context = this,
Property = _pending,
ConcreteType = propertyOwner,
Operator = op,
Value = val
};
this.AddConstraint(constraint);
_pending = null;
_pendingOwner = null;
}
private static PropertyOperator ConvertOperator(PropertyCompareOperator pco)
{
var op = PropertyOperator.Equal;
switch (pco)
{
case PropertyCompareOperator.Equal:
op = PropertyOperator.Equal;
break;
case PropertyCompareOperator.NotEqual:
op = PropertyOperator.NotEqual;
break;
case PropertyCompareOperator.Greater:
op = PropertyOperator.Greater;
break;
case PropertyCompareOperator.GreaterEqual:
op = PropertyOperator.GreaterEqual;
break;
case PropertyCompareOperator.Less:
op = PropertyOperator.Less;
break;
case PropertyCompareOperator.LessEqual:
op = PropertyOperator.LessEqual;
break;
case PropertyCompareOperator.Like:
op = PropertyOperator.Like;
break;
case PropertyCompareOperator.Contains:
op = PropertyOperator.Contains;
break;
case PropertyCompareOperator.StartWith:
op = PropertyOperator.StartsWith;
break;
case PropertyCompareOperator.EndWith:
op = PropertyOperator.EndsWith;
break;
case PropertyCompareOperator.In:
op = PropertyOperator.In;
break;
case PropertyCompareOperator.NotIn:
op = PropertyOperator.NotIn;
break;
default:
break;
}
return(op);
}
internal PropertyComparisonExpression(IManagedProperty property, Type concreteType, PropertyCompareOperator op, object value)
: base(property, concreteType)
{
this.Operator = op;
this.Value = value;
switch (op)
{
case PropertyCompareOperator.Equal:
case PropertyCompareOperator.NotEqual:
break;
default:
if (value == null)
{
throw new InvalidOperationException("null 值只能进行相等、不相等两种对比。");
}
break;
}
}
private static PropertyOperator ConvertOperator(PropertyCompareOperator pco)
{
var op = PropertyOperator.Equal;
switch (pco)
{
case PropertyCompareOperator.Equal:
op = PropertyOperator.Equal;
break;
case PropertyCompareOperator.NotEqual:
op = PropertyOperator.NotEqual;
break;
case PropertyCompareOperator.Greater:
op = PropertyOperator.Greater;
break;
case PropertyCompareOperator.GreaterEqual:
op = PropertyOperator.GreaterEqual;
break;
case PropertyCompareOperator.Less:
op = PropertyOperator.Less;
break;
case PropertyCompareOperator.LessEqual:
op = PropertyOperator.LessEqual;
break;
case PropertyCompareOperator.Like:
op = PropertyOperator.Like;
break;
case PropertyCompareOperator.Contains:
op = PropertyOperator.Contains;
break;
case PropertyCompareOperator.StartWith:
op = PropertyOperator.StartsWith;
break;
case PropertyCompareOperator.EndWith:
op = PropertyOperator.EndsWith;
break;
case PropertyCompareOperator.In:
op = PropertyOperator.In;
break;
case PropertyCompareOperator.NotIn:
op = PropertyOperator.NotIn;
break;
default:
break;
}
return op;
}
private void AddConstraint(PropertyCompareOperator op, IManagedProperty property, Type propertyOwner = null)
{
if (_pending == null)
{
throw new InvalidOperationException("查询构造出错：你必须先调用方法 Constrain。");
}
//如果没有指定属性对应的实体类型，则使用当前仓库对应的实体来作为属性的拥有者。
var leftPropertyOwner = _pendingOwner;
if (leftPropertyOwner == null)
{
leftPropertyOwner = _pending.OwnerType;
if (_repo.EntityType.IsSubclassOf(leftPropertyOwner))
{
leftPropertyOwner = _repo.EntityType;
}
}
var constraint = new TwoPropertiesConstraint
{
Context = this,
LeftProperty = _pending,
LeftPropertyOwner = leftPropertyOwner,
Operator = op,
RightProperty = property,
RightPropertyOwner = propertyOwner
};
this.AddConstraint(constraint);
_pending = null;
_pendingOwner = null;
}
private void AddConstraint(PropertyCompareOperator op, object val)
{
if (_pending == null)
{
throw new InvalidOperationException("查询构造出错：你必须先调用方法 Constrain。");
}
//如果没有指定属性对应的实体类型，则使用当前仓库对应的实体来作为属性的拥有者。
var propertyOwner = _pendingOwner;
if (propertyOwner == null)
{
propertyOwner = _pending.OwnerType;
if (_repo.EntityType.IsSubclassOf(propertyOwner))
{
propertyOwner = _repo.EntityType;
}
}
var constraint = new PropertyConstraint
{
Context = this,
Property = _pending,
ConcreteType = propertyOwner,
Operator = op,
Value = val
};
this.AddConstraint(constraint);
_pending = null;
_pendingOwner = null;
}
internal PropertyComparisonExpression(IManagedProperty property, Type concreteType, PropertyCompareOperator op, object value)
: base(property, concreteType)
{
this.Operator = op;
this.Value = value;
switch (op)
{
case PropertyCompareOperator.Equal:
case PropertyCompareOperator.NotEqual:
break;
default:
if (value == null)
{
throw new InvalidOperationException("null 值只能进行相等、不相等两种对比。");
}
break;
}
}
