internal static string BuildInsertSql(EntityMeta meta, List <string> list)
{
if (list == null || list.Count == 0)
{
return(string.Empty);
}
StringBuilder sqlbuilder = new StringBuilder();
sqlbuilder.AppendFormat("INSERT INTO [{0}] (", meta.TableName);
for (int i = 0, j = 0; i < meta.Columns.Count; i++)
{
if (meta.Columns[i].Identity || !list.Contains(meta.Columns[i].ColumnName))
{
continue;
}
if (j > 0)
{
sqlbuilder.Append(",");
}
sqlbuilder.Append("[" + meta.Columns[i].ColumnName + "]");
j++;
}
sqlbuilder.Append(") VALUES (");
for (int i = 0, j = 0; i < meta.Columns.Count; i++)
{
if (meta.Columns[i].Identity || !list.Contains(meta.Columns[i].ColumnName))
{
continue;
}
if (j > 0)
{
sqlbuilder.Append(",");
}
sqlbuilder.Append("@" + meta.Columns[i].ColumnName + "");
j++;
}
sqlbuilder.Append(");");
if (meta.Columns.Exists(x => x.Identity))
{
sqlbuilder.Append(" SELECT CAST(SCOPE_IDENTITY() as bigint) as Id;"); //sqlbuilder.Append("SELECT SCOPE_IDENTITY();");
}
else
{
sqlbuilder.Append(" SELECT CAST(0 as bigint) as Id;");
}
return(sqlbuilder.ToString());
}
internal static string BuildUpdateSql(EntityMeta meta, List <string> list)
{
if (list == null || list.Count == 0)
{
return(string.Empty);
}
var keys = meta.Columns.FindAll(_ => _.PrimaryKey);
StringBuilder sqlbuilder = new StringBuilder();
sqlbuilder.AppendFormat("UPDATE [{0}] SET ", meta.TableName);
for (int i = 0, j = 0; i < meta.Columns.Count; i++)
{
if (!meta.Columns[i].PrimaryKey && list.Contains(meta.Columns[i].ColumnName))
{
if (j > 0)
{
sqlbuilder.Append(",");
}
j++;
sqlbuilder.Append("[" + meta.Columns[i].ColumnName + "]=@" + meta.Columns[i].ColumnName + "");
}
}
sqlbuilder.Append(" WHERE ");
for (int i = 0; i < keys.Count; i++)
{
if (i > 0)
{
sqlbuilder.Append(" AND ");
}
sqlbuilder.Append("[" + keys[i].ColumnName + "]=@" + keys[i].ColumnName);
}
return(sqlbuilder.ToString());
}
public static string EntityMetaToUpdateSQL(EntityMeta meta)
{
if (meta.Columns == null || meta.Columns.Count == 0)
{
return(string.Empty);
}
var keys = meta.Columns.FindAll(_ => _.PrimaryKey);
StringBuilder sqlbuilder = new StringBuilder();
sqlbuilder.AppendFormat("UPDATE [{0}] SET ", meta.TableName);
for (int i = 0, j = 0; i < meta.Columns.Count; i++)
{
if (!meta.Columns[i].PrimaryKey)
{
if (j > 0)
{
sqlbuilder.Append(",");
}
j++;
sqlbuilder.Append("[" + meta.Columns[i].ColumnName + "]=@" + meta.Columns[i].ColumnName + "");
}
}
sqlbuilder.Append(" WHERE ");
for (int i = 0; i < keys.Count; i++)
{
if (i > 0)
{
sqlbuilder.Append(" AND ");
}
sqlbuilder.Append("[" + keys[i].ColumnName + "]=@" + keys[i].ColumnName);
}
return(sqlbuilder.ToString());
}
public static EntityMeta GetDefineInfoFromType(Type type)
{
EntityMeta tdefine = null;
lock (lockobject)
{
if (_cache.ContainsKey(type))
{
tdefine = _cache[type];
}
}
if (tdefine != null)
{
return(tdefine);
}
else
{
tdefine = new EntityMeta();
}
TableNameAttribute tableAttribute = (TableNameAttribute)Attribute.GetCustomAttribute(type, typeof(TableNameAttribute));
if (tableAttribute != null)
{
tdefine.TableName = tableAttribute.TableName;
}
else
{
tdefine.TableName = type.FullName.Split('.').Last();
}
PropertyInfo[] pinfos = type.GetProperties();
foreach (PropertyInfo p in pinfos)
{
Attribute[] attrs = Attribute.GetCustomAttributes(p);
EntityColumnMeta ecmeta = new EntityColumnMeta();
ecmeta.ColumnName = p.Name;
foreach (Attribute cusattr in attrs)
{
if (cusattr is IgnoreAttribute)
{
ecmeta = null;
break;
}
if (cusattr is PrimaryKeyAttribute)
{
ecmeta.PrimaryKey = true;
}
if (cusattr is MapFieldAttribute)
{
ecmeta.ColumnName = ((MapFieldAttribute)cusattr).MapFieldName;
}
if (cusattr is IdentityAttribute)
{
ecmeta.Identity = true;
}
if (cusattr is NullableAttribute)
{
ecmeta.Nullable = true;
}
}
if (ecmeta != null)
{
tdefine.Columns.Add(ecmeta);
}
}
lock (lockobject)
{
if (!_cache.ContainsKey(type))
{
_cache.Add(type, tdefine);
}
}
return(tdefine);
}
