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mysql 表达式函数测试完成

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28810
2018-12-21 17:03:51 +08:00
parent 572aa1d8ee
commit 2a07c8bae6
14 changed files with 1454 additions and 410 deletions
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33
FreeSql/Internal/CommonExpression.cs
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@ -155,26 +155,31 @@ namespace FreeSql.Internal {
}
internal string ExpressionLambdaToSql(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, bool isQuoteName) {
switch( exp.NodeType) {
switch (exp.NodeType) {
case ExpressionType.Quote: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, tbtype, isQuoteName);
case ExpressionType.Lambda: return ExpressionLambdaToSql((exp as LambdaExpression)?.Body, _tables, _selectColumnMap, tbtype, isQuoteName);
case ExpressionType.Convert: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, tbtype, isQuoteName);
case ExpressionType.Negate:
case ExpressionType.NegateChecked: return "-" + ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, tbtype, isQuoteName);
case ExpressionType.Constant: return _common.FormatSql("{0}", (exp as ConstantExpression)?.Value);
case ExpressionType.Call:
var exp3 = exp as MethodCallExpression;
if (exp3.Object.Type.FullName == "System.String") return ExpressionLambdaToSqlCallString(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
if (exp3.Object.Type.FullName == "System.Math") return ExpressionLambdaToSqlCallMath(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
if (exp3.Object.Type.FullName == "System.DateTime" || exp3.Object.Type.GenericTypeArguments.FirstOrDefault()?.FullName == "System.DateTime") return ExpressionLambdaToSqlCallDateTime(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
if (exp3.Object.Type.FullName == "System.TimeSpan" || exp3.Object.Type.GenericTypeArguments.FirstOrDefault()?.FullName == "System.TimeSpan") return ExpressionLambdaToSqlCallTimeSpan(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
switch (exp3.Object?.Type.FullName ?? exp3.Method.DeclaringType.FullName) {
case "System.String": return ExpressionLambdaToSqlCallString(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
case "System.Math": return ExpressionLambdaToSqlCallMath(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
case "System.DateTime": return ExpressionLambdaToSqlCallDateTime(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
case "System.TimeSpan": return ExpressionLambdaToSqlCallTimeSpan(exp3, _tables, _selectColumnMap, tbtype, isQuoteName);
}
throw new Exception($"MySqlExpression 未现实函数表达式 {exp3} 解析");
case ExpressionType.MemberAccess:
var exp4 = exp as MemberExpression;
if (exp4.Expression != null && exp4.Expression.Type.FullName.StartsWith("System.Nullable`1[")) return ExpressionLambdaToSql(exp4.Expression, _tables, _selectColumnMap, tbtype, isQuoteName);
var extRet = "";
if (exp4.Expression == null && exp4.Type.FullName == "System.DateTime" && exp4.Member.Name == "Now") return ExpressionLambdaToSqlMemberAccessDateTime(exp4, _tables, _selectColumnMap, tbtype, isQuoteName);
if (exp4.Expression.Type.FullName == "System.String") extRet = ExpressionLambdaToSqlMemberAccessString(exp4, _tables, _selectColumnMap, tbtype, isQuoteName);
else if (exp4.Expression.Type.FullName == "System.Math") extRet = ExpressionLambdaToSqlMemberAccessMath(exp4, _tables, _selectColumnMap, tbtype, isQuoteName);
else if (exp4.Expression.Type.FullName == "System.DateTime" || exp4.Type.GenericTypeArguments.FirstOrDefault()?.FullName == "System.DateTime") extRet = ExpressionLambdaToSqlMemberAccessDateTime(exp4, _tables, _selectColumnMap, tbtype, isQuoteName);
else if (exp4.Expression.Type.FullName == "System.TimeSpan" || exp4.Type.GenericTypeArguments.FirstOrDefault()?.FullName == "System.TimeSpan") extRet = ExpressionLambdaToSqlMemberAccessTimeSpan(exp4, _tables, _selectColumnMap, tbtype, isQuoteName);
switch (exp4.Expression?.Type.FullName ?? exp4.Type.FullName) {
case "System.String": extRet = ExpressionLambdaToSqlMemberAccessString(exp4, _tables, _selectColumnMap, tbtype, isQuoteName); break;
case "System.DateTime": extRet = ExpressionLambdaToSqlMemberAccessDateTime(exp4, _tables, _selectColumnMap, tbtype, isQuoteName); break;
case "System.TimeSpan": extRet = ExpressionLambdaToSqlMemberAccessTimeSpan(exp4, _tables, _selectColumnMap, tbtype, isQuoteName); break;
}
if (string.IsNullOrEmpty(extRet) == false) return extRet;
var expStack = new Stack<Expression>();
@ -272,9 +277,14 @@ namespace FreeSql.Internal {
if (isQuoteName) name2 = _common.QuoteSqlName(name2);
return $"{alias2}.{name2}";
}
if (dicExpressionOperator.TryGetValue(exp.NodeType, out var tryoper) == false) return "";
var expBinary = exp as BinaryExpression;
if (expBinary == null) return "";
if (expBinary.NodeType == ExpressionType.Coalesce) {
return _common.IsNull(
ExpressionLambdaToSql(expBinary.Left, _tables, _selectColumnMap, tbtype, isQuoteName),
ExpressionLambdaToSql(expBinary.Right, _tables, _selectColumnMap, tbtype, isQuoteName));
}
if (dicExpressionOperator.TryGetValue(expBinary.NodeType, out var tryoper) == false) return "";
var left = ExpressionLambdaToSql(expBinary.Left, _tables, _selectColumnMap, tbtype, isQuoteName);
var right = ExpressionLambdaToSql(expBinary.Right, _tables, _selectColumnMap, tbtype, isQuoteName);
if (left == "NULL") {
@ -288,7 +298,6 @@ namespace FreeSql.Internal {
}
internal abstract string ExpressionLambdaToSqlMemberAccessString(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, bool isQuoteName);
internal abstract string ExpressionLambdaToSqlMemberAccessMath(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, bool isQuoteName);
internal abstract string ExpressionLambdaToSqlMemberAccessDateTime(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, bool isQuoteName);
internal abstract string ExpressionLambdaToSqlMemberAccessTimeSpan(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, bool isQuoteName);
internal abstract string ExpressionLambdaToSqlCallString(MethodCallExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, bool isQuoteName);