public EntityQuery <DocumentManager.Web.Model.taxpayer> Search(EntityQuery <DocumentManager.Web.Model.taxpayer> aQuerable
, TaxPayerSearchEntity aTaxPayerSearchEntity)
{
EntityQuery <DocumentManager.Web.Model.taxpayer> lQuerable = aQuerable;
Expression filter = Expression.Constant(true);
Expression totalExpr = Expression.Constant(true);
ParameterExpression lParam = Expression.Parameter(typeof(DocumentManager.Web.Model.taxpayer), "TaxPayer");
{
// Expression leftk = Expression.Property(lParam, typeof(DocumentManager.Web.Model.taxpayer).GetProperty("taxpayer_group_id"));
//Nullable<int> lValue = 0;
//Expression rightk = Expression.Constant(0);
//totalExpr = Expression.Equal(leftk, rightk);
}
Expression left = Expression.Property(lParam, typeof(DocumentManager.Web.Model.taxpayer).GetProperty(TaxPayerFieldFieldString.GetString(aTaxPayerSearchEntity.TPTaxPayerField)));
Expression right = Expression.Constant(null);
switch (aTaxPayerSearchEntity.TPValueType)
{
case ValueType.VALUEBOOLEAN:
right = Expression.Constant(aTaxPayerSearchEntity.ValueBoolean);
break;
case ValueType.VALUEINT:
right = Expression.Constant(aTaxPayerSearchEntity.ValueInt);
break;
case ValueType.VALUESTR:
right = Expression.Constant(aTaxPayerSearchEntity.ValueStr);
break;
}
switch (aTaxPayerSearchEntity.TPSearchOperator)
{
case SearchOperator.CONTAINS:
filter = Expression.Call(Expression.Property(lParam, typeof(DocumentManager.Web.Model.taxpayer).GetProperty(TaxPayerFieldFieldString.GetString(aTaxPayerSearchEntity.TPTaxPayerField)))
, typeof(string).GetMethod("Contains", new Type[] { typeof(string) })
, Expression.Constant(aTaxPayerSearchEntity.ValueStr));
//totalExpr = Expression.And(filter, totalExpr);
break;
case SearchOperator.NOTCONTAINS:
filter = Expression.Call(Expression.Property(lParam, typeof(DocumentManager.Web.Model.taxpayer).GetProperty(TaxPayerFieldFieldString.GetString(aTaxPayerSearchEntity.TPTaxPayerField)))
, typeof(string).GetMethod("Contains", new Type[] { typeof(string) })
, Expression.Constant(aTaxPayerSearchEntity.ValueStr));
filter = Expression.Not(filter);
break;
case SearchOperator.EQUAL:
filter = Expression.Equal(left, right);
break;
case SearchOperator.NOEQUAL:
filter = Expression.NotEqual(left, right);
break;
case SearchOperator.GREATER:
filter = Expression.GreaterThan(left, right);
break;
case SearchOperator.LESS:
filter = Expression.LessThan(left, right);
break;
case SearchOperator.GREATEREQUAL:
filter = Expression.GreaterThanOrEqual(left, right);
break;
case SearchOperator.LESSEQUAL:
filter = Expression.LessThanOrEqual(left, right);
break;
}
switch (aTaxPayerSearchEntity.TPSearchCondition)
{
case SearchCondition.AND:
totalExpr = Expression.AndAlso(filter, totalExpr);
break;
case SearchCondition.OR:
totalExpr = Expression.OrElse(filter, totalExpr);
break;
}
//Expression pred = Expression.Lambda(totalExpr, lParam);
//Expression whereExpression = Expression.Call(typeof(Queryable), "Where", new Type[] { typeof(DocumentManager.Web.Model.taxpayer) }, Expression.Constant(lQuerable), pred);
//OrderBy部分排序
//MethodCallExpression orderByCallExpression = Expression.Call(typeof(Queryable), queryCondition.IsDesc ? "OrderByDescending" : "OrderBy", new Type[] { typeof(TestUser), orderEntries[queryCondition.OrderField].OrderType }, whereExpression, Expression.Lambda(Expression.Property(param, orderEntries[queryCondition.OrderField].OrderStr), param));
//EntityQuery<DocumentManager.Web.Model.taxpayer>()
//return lQuerable.Query.AsQueryable().Provider.CreateQuery<DocumentManager.Web.Model.taxpayer>(whereExpression);
//return lQuerable.Query.AsQueryable().Provider.CreateQuery<DocumentManager.Web.Model.taxpayer>(whereExpression);
return(lQuerable.Where((Expression <Func <DocumentManager.Web.Model.taxpayer, bool> >)Expression.Lambda(totalExpr, lParam)));
}
private Expression CreateExpression(Expression aExpression, TaxPayerSearchEntity aTaxPayerSearchEntity)
{
//ParameterExpression lParam = Expression.Parameter(typeof(DocumentManager.Web.Model.taxpayer), "TaxPayer");
Expression filter = Expression.Constant(true);
Expression left = Expression.Property(Param, typeof(DocumentManager.Web.Model.taxpayer).GetProperty(TaxPayerFieldFieldString.GetString(aTaxPayerSearchEntity.TPTaxPayerField)));
Expression right = Expression.Constant(null);
switch (aTaxPayerSearchEntity.TPValueType)
{
case ValueType.VALUEBOOLEAN:
//right = Expression.Constant(aTaxPayerSearchEntity.ValueBoolean);
right = Expression.Constant(aTaxPayerSearchEntity.ValueBoolean, typeof(bool?));
break;
case ValueType.VALUEINT:
//right = Expression.Constant(aTaxPayerSearchEntity.ValueInt);
right = Expression.Constant(aTaxPayerSearchEntity.ValueInt, typeof(int?));
break;
case ValueType.VALUESTR:
right = Expression.Constant(aTaxPayerSearchEntity.ValueStr);
break;
}
switch (aTaxPayerSearchEntity.TPSearchOperator)
{
case SearchOperator.CONTAINS:
filter = Expression.Call(Expression.Property(Param, typeof(DocumentManager.Web.Model.taxpayer).GetProperty(TaxPayerFieldFieldString.GetString(aTaxPayerSearchEntity.TPTaxPayerField)))
, typeof(string).GetMethod("Contains", new Type[] { typeof(string) })
, Expression.Constant(aTaxPayerSearchEntity.ValueStr));
//totalExpr = Expression.And(filter, totalExpr);
break;
case SearchOperator.NOTCONTAINS:
filter = Expression.Call(Expression.Property(Param, typeof(DocumentManager.Web.Model.taxpayer).GetProperty(TaxPayerFieldFieldString.GetString(aTaxPayerSearchEntity.TPTaxPayerField)))
, typeof(string).GetMethod("Contains", new Type[] { typeof(string) })
, Expression.Constant(aTaxPayerSearchEntity.ValueStr));
filter = Expression.Not(filter);
break;
case SearchOperator.EQUAL:
filter = Expression.Equal(left, right);
break;
case SearchOperator.NOEQUAL:
filter = Expression.NotEqual(left, right);
break;
case SearchOperator.GREATER:
filter = Expression.GreaterThan(left, right);
break;
case SearchOperator.LESS:
filter = Expression.LessThan(left, right);
break;
case SearchOperator.GREATEREQUAL:
filter = Expression.GreaterThanOrEqual(left, right);
break;
case SearchOperator.LESSEQUAL:
filter = Expression.LessThanOrEqual(left, right);
break;
}
switch (aTaxPayerSearchEntity.TPSearchCondition)
{
case SearchCondition.AND:
filter = Expression.AndAlso(filter, aExpression);
break;
case SearchCondition.OR:
filter = Expression.OrElse(filter, aExpression);
break;
}
return(filter);
}
