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using Helper.Core.Library.QueryHelper;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Linq.Expressions;

using System.Text;

using System.Threading.Tasks;

namespace Helper.Core.Library.Translator

{

internal class QueryTranslator : BaseTranslator

{

protected override Expression VisitNew(NewExpression expression)

{

var expressionArguments = expression.Arguments;

int expressionMemberCount = expression.Members.Count;

dynamic expressionArgument = null;

string fieldName = null;

string memberName = null;

TranslatorMapperItem mapperItem = null;

for (int index = 0; index < expressionMemberCount; index++)

{

expressionArgument = expressionArguments[index];

mapperItem = this.typeDict[expressionArgument.Expression.Name];

memberName = expressionArgument.Member.Name;

fieldName = TQueryReflectionHelper.GetFieldName(mapperItem.TableType, memberName);

if (mapperItem.TableName != null && !string.IsNullOrEmpty(memberName) && !string.IsNullOrEmpty(fieldName))

{

this.stringBuilder.Append(string.Format(TQueryHelperTemplateEnum.TABLE_FIELD, mapperItem.TableName, fieldName));

if (memberName != expression.Members[index].Name)

{

this.stringBuilder.Append(" as ");

this.stringBuilder.Append(expression.Members[index].Name);

}

if (index < expressionMemberCount - 1)

{

this.stringBuilder.Append(",");

}

}

}

return expression;

}

}

}