/// <summary>
/// 解析表达式
/// </summary>
/// <param name="re">当前解析对象</param>
/// <param name="exp">要解析的表达式</param>
public void ResolveExpression(ResolveExpress re, Expression exp)
{
//初始化表达式
Init(re, exp);
//设置PageSize
foreach (var par in Paras)
{
SqlSugarTool.SetParSize(par);
}
}
public void ResolveExpression(ResolveExpress re, Expression exp)
{
ResolveExpress.MemberType type = ResolveExpress.MemberType.None;
var expStr = exp.ToString();
var isNotBool = !expStr.Contains("True") && !expStr.Contains("False");
var isContainsNot = expStr.Contains("Not");
if (isContainsNot && expStr.IsMatch(@" => Not\(.+?\)") && !expStr.Contains("Contains"))
{
this.SqlWhere = string.Format(" AND {0}=0 or {0} is null ", Regex.Match(expStr, @" => Not\(.+\.(.+?)\)").Groups[1].Value);
}
else if (isNotBool)
{
this.SqlWhere = string.Format(" AND {0} ", re.CreateSqlElements(exp, ref type));
}
else
{
var isTrue = Regex.IsMatch(expStr, @"\=\> True$");
var isFalse = Regex.IsMatch(expStr, @"\=\> False$");
if (isFalse)
{
this.SqlWhere = string.Format(" AND 1<>1 ");
}
else if (isTrue)
{
}
else
{
this.SqlWhere = string.Format(" AND {0} ", re.CreateSqlElements(exp, ref type));
}
}
foreach (var par in Paras)
{
SqlSugarTool.SetParSize(par);
}
}
/// <summary>
/// 更新
/// 注意：rowObj为T类型将更新该实体的非主键所有列，如果rowObj类型为匿名类将更新指定列
/// 使用说明:sqlSugar.Update《T》(rowObj,whereObj);
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="rowObj">new T(){name="张三",sex="男"}或者new {name="张三",sex="男"}</param>
/// <param name="expression">it.id=100</param>
/// <returns></returns>
public bool Update <T>(object rowObj, Expression <Func <T, bool> > expression) where T : class
{
if (rowObj == null)
{
throw new ArgumentNullException("SqlSugarClient.Update.rowObj");
}
if (expression == null)
{
throw new ArgumentNullException("SqlSugarClient.Update.expression");
}
Type type = typeof(T);
string typeName = type.Name;
typeName = GetTableNameByClassType(typeName);
var rows = SqlSugarTool.GetParameters(rowObj);
//sql语句缓存
string cacheSqlKey = "db.update." + typeName + rows.Length;
var cacheSqlManager = CacheManager <StringBuilder> .GetInstance();
string pkName = SqlSugarTool.GetPrimaryKeyByTableName(this, typeName);
var identityNames = SqlSugarTool.GetIdentitiesKeyByTableName(this, typeName);
ResolveExpress re = new ResolveExpress();
re.ResolveExpression(re, expression);
StringBuilder sbSql = new StringBuilder();
if (cacheSqlManager.ContainsKey(cacheSqlKey))
{
sbSql = cacheSqlManager[cacheSqlKey];
}
else
{
sbSql = new StringBuilder(string.Format(" UPDATE [{0}] SET ", typeName));
foreach (var r in rows)
{
var name = r.ParameterName.TrimStart('@');
var isPk = pkName != null && pkName.ToLower() == name.ToLower();
var isIdentity = identityNames.Any(it => it.Value.ToLower() == name.ToLower());
var isDisableUpdateColumns = DisableUpdateColumns != null && DisableUpdateColumns.Any(it => it.ToLower() == name.ToLower());
if (isPk || isIdentity || isDisableUpdateColumns)
{
if (rowObj.GetType() == type)
{
continue;
}
}
sbSql.Append(string.Format(" [{0}] =@{0} ,", name));
}
sbSql.Remove(sbSql.Length - 1, 1);
sbSql.Append(" WHERE 1=1 ");
sbSql.Append(re.SqlWhere);;
cacheSqlManager.Add(cacheSqlKey, sbSql, cacheSqlManager.Day);
}
List <SqlParameter> parsList = new List <SqlParameter>();
parsList.AddRange(re.Paras);
var pars = rows;
if (pars != null)
{
foreach (var par in pars)
{
if (par.SqlDbType == SqlDbType.Udt)
{
par.UdtTypeName = "HIERARCHYID";
}
SqlSugarTool.SetParSize(par);
parsList.Add(par);
}
}
try
{
var updateRowCount = ExecuteCommand(sbSql.ToString(), parsList.ToArray());
return(updateRowCount > 0);
}
catch (Exception ex)
{
var cacheManager = CacheManager <string> .GetInstance();
cacheManager.RemoveAll(it => it.Contains("KeyBy"));
throw new Exception("sql:" + sbSql.ToString() + "\n" + ex.Message);
}
}
/// <summary>
/// 插入
/// 使用说明:sqlSugar.Insert(entity);
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="entity">插入对象</param>
/// <param name="isIdentity">该属性已经作废可以不填，主键是否为自增长,true可以不填,false必填</param>
/// <returns></returns>
public object Insert <T>(T entity, bool isIdentity = true) where T : class
{
Type type = entity.GetType();
string typeName = type.Name;
typeName = GetTableNameByClassType(typeName);
StringBuilder sbInsertSql = new StringBuilder();
List <SqlParameter> pars = new List <SqlParameter>();
var identities = SqlSugarTool.GetIdentitiesKeyByTableName(this, typeName);
isIdentity = identities != null && identities.Count > 0;
//sql语句缓存
string cacheSqlKey = "db.Insert." + typeName;
var cacheSqlManager = CacheManager <StringBuilder> .GetInstance();
//属性缓存
string cachePropertiesKey = "db." + typeName + ".GetProperties";
var cachePropertiesManager = CacheManager <PropertyInfo[]> .GetInstance();
PropertyInfo[] props = null;
if (cachePropertiesManager.ContainsKey(cachePropertiesKey))
{
props = cachePropertiesManager[cachePropertiesKey];
}
else
{
props = type.GetProperties();
cachePropertiesManager.Add(cachePropertiesKey, props, cachePropertiesManager.Day);
}
var isContainCacheSqlKey = cacheSqlManager.ContainsKey(cacheSqlKey);
if (isContainCacheSqlKey)
{
sbInsertSql = cacheSqlManager[cacheSqlKey];
}
else
{
//2.获得实体的属性集合
//实例化一个StringBuilder做字符串的拼接
sbInsertSql.Append("insert into [" + typeName + "] (");
//3.遍历实体的属性集合
foreach (PropertyInfo prop in props)
{
//EntityState,@EntityKey
if (!isIdentity || identities.Any(it => it.Value.ToLower() != prop.Name.ToLower()))
{
//4.将属性的名字加入到字符串中
sbInsertSql.Append("[" + prop.Name + "],");
}
}
//**去掉最后一个逗号
sbInsertSql.Remove(sbInsertSql.Length - 1, 1);
sbInsertSql.Append(" ) values(");
}
//5.再次遍历，形成参数列表"(@xx,@xx@xx)"的形式
foreach (PropertyInfo prop in props)
{
//EntityState,@EntityKey
if (!isIdentity || identities.Any(it => it.Value.ToLower() != prop.Name.ToLower()))
{
if (!cacheSqlManager.ContainsKey(cacheSqlKey))
{
sbInsertSql.Append("@" + prop.Name + ",");
}
object val = prop.GetValue(entity, null);
if (val == null)
{
val = DBNull.Value;
}
if (_serialNumber.IsValuable())
{
Func <PubModel.SerialNumber, bool> serEexp = it => it.TableName.ToLower() == typeName.ToLower() && it.FieldName.ToLower() == prop.Name.ToLower();
var isAnyNum = _serialNumber.Any(serEexp);
if (isAnyNum && (val == DBNull.Value || val.IsNullOrEmpty()))
{
val = _serialNumber.First(serEexp).GetNumFunc();
}
}
if (prop.PropertyType.IsEnum)
{
val = (int)(val);
}
var par = new SqlParameter("@" + prop.Name, val);
SqlSugarTool.SetParSize(par);
if (par.SqlDbType == SqlDbType.Udt)
{
par.UdtTypeName = "HIERARCHYID";
}
pars.Add(par);
}
}
if (!isContainCacheSqlKey)
{
//**去掉最后一个逗号
sbInsertSql.Remove(sbInsertSql.Length - 1, 1);
if (isIdentity == false)
{
sbInsertSql.Append(");select 'true';");
}
else
{
sbInsertSql.Append(");select SCOPE_IDENTITY();");
}
cacheSqlManager.Add(cacheSqlKey, sbInsertSql, cacheSqlManager.Day);
}
var sql = sbInsertSql.ToString();
try
{
var lastInsertRowId = GetScalar(sql, pars.ToArray());
return(lastInsertRowId);
}
catch (Exception ex)
{
var cacheManager = CacheManager <string> .GetInstance();
cacheManager.RemoveAll(it => it.Contains("KeyBy"));
throw new Exception("sql:" + sql + "\n" + ex.Message);
}
}