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- 优化 HzyTuple 子查询解析；

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This commit is contained in:
2881099
2020-12-25 16:03:33 +08:00
parent 89fa0dc9f6
commit 119b8f0ec0
3 changed files with 53 additions and 9 deletions
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27
FreeSql/Internal/CommonExpression.cs
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@ -1053,8 +1053,17 @@ namespace FreeSql.Internal
fsqltable1SetAlias = true;
var argExpLambda = argExp as LambdaExpression;
var fsqlTypeGenericArgs = fsqlType.GetGenericArguments();
for (var gai = 0; gai < fsqlTypeGenericArgs.Length && gai < argExpLambda.Parameters.Count; gai++)
fsqltables[gai].Alias = argExpLambda.Parameters[gai].Name;
if (argExpLambda.Parameters.Count == 1 && argExpLambda.Parameters[0].Type.FullName.StartsWith("FreeSql.Internal.Model.HzyTuple`"))
{
for (var gai = 0; gai < fsqlTypeGenericArgs.Length; gai++)
fsqltables[gai].Alias = "ht" + (gai + 1);
}
else
{
for (var gai = 0; gai < fsqlTypeGenericArgs.Length && gai < argExpLambda.Parameters.Count; gai++)
fsqltables[gai].Alias = argExpLambda.Parameters[gai].Name;
}
}
}
args[a] = argExp ?? Expression.Lambda(arg3Exp).Compile().DynamicInvoke();
@ -1249,7 +1258,10 @@ namespace FreeSql.Internal
tscClone1.subSelect001 = fsql as Select0Provider; //#405 Oracle within group(order by ..)
tscClone1.isDisableDiyParse = false;
tscClone1._tables = fsqltables;
var sqlSum = fsqlType.GetMethod("ToSql", new Type[] { typeof(string) })?.Invoke(fsql, new object[] { $"{exp3.Method.Name.ToLower()}({ExpressionLambdaToSql(exp3.Arguments.FirstOrDefault(), tscClone1)})" })?.ToString();
var exp3Args0 = (exp3.Arguments.FirstOrDefault() as UnaryExpression)?.Operand as LambdaExpression;
if (exp3Args0.Parameters.Count == 1 && exp3Args0.Parameters[0].Type.FullName.StartsWith("FreeSql.Internal.Model.HzyTuple`"))
exp3Args0 = new ReplaceHzyTupleToMultiParam().Modify(exp3Args0, fsqltables);
var sqlSum = fsqlType.GetMethod("ToSql", new Type[] { typeof(string) })?.Invoke(fsql, new object[] { $"{exp3.Method.Name.ToLower()}({ExpressionLambdaToSql(exp3Args0, tscClone1)})" })?.ToString();
if (string.IsNullOrEmpty(sqlSum) == false)
return $"({sqlSum.Replace(" \r\n", " \r\n ")})";
break;
@ -1260,7 +1272,10 @@ namespace FreeSql.Internal
tscClone2.subSelect001 = fsql as Select0Provider; //#405 Oracle within group(order by ..)
tscClone2.isDisableDiyParse = false;
tscClone2._tables = fsqltables;
var sqlFirst = fsqlType.GetMethod("ToSql", new Type[] { typeof(string) })?.Invoke(fsql, new object[] { ExpressionLambdaToSql(exp3.Arguments.FirstOrDefault(), tscClone2) })?.ToString();
var exp3Args02 = (exp3.Arguments.FirstOrDefault() as UnaryExpression)?.Operand as LambdaExpression;
if (exp3Args02.Parameters.Count == 1 && exp3Args02.Parameters[0].Type.FullName.StartsWith("FreeSql.Internal.Model.HzyTuple`"))
exp3Args02 = new ReplaceHzyTupleToMultiParam().Modify(exp3Args02, fsqltables);
var sqlFirst = fsqlType.GetMethod("ToSql", new Type[] { typeof(string) })?.Invoke(fsql, new object[] { ExpressionLambdaToSql(exp3Args02, tscClone2) })?.ToString();
if (string.IsNullOrEmpty(sqlFirst) == false)
return $"({sqlFirst.Replace(" \r\n", " \r\n ")})";
break;
@ -1794,8 +1809,8 @@ namespace FreeSql.Internal
private ParameterExpression[] parameters;
public LambdaExpression Modify(LambdaExpression lambda, List<SelectTableInfo> tables)
{
this.tables = tables;
parameters = tables.Select(a => a.Parameter ?? Expression.Parameter(a.Table.Type, a.Alias)).ToArray();
this.tables = tables.Where(a => a.Type != SelectTableInfoType.Parent).ToList();
parameters = this.tables.Select(a => a.Parameter ?? Expression.Parameter(a.Table.Type, a.Alias)).ToArray();
var exp = Visit(lambda.Body);
return Expression.Lambda(exp, parameters);
}