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- 增加 IDbFirst.GetTableByName 方法获取单表信息，包括列详情、主键、唯一键、索引、备注；

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This commit is contained in:
28810
2020-08-11 23:23:54 +08:00
parent da6effcf52
commit 0d832a5a23
33 changed files with 994 additions and 601 deletions
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110
Providers/FreeSql.Provider.Oracle/OracleDbFirst.cs
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@ -185,21 +185,36 @@ namespace FreeSql.Oracle
return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
}
public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
{
var loc1 = new List<DbTableInfo>();
var loc2 = new Dictionary<string, DbTableInfo>();
var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
var database = database2?.ToArray();
if (database == null || database.Any() == false)
string[] tbname = null;
if (string.IsNullOrEmpty(tablename) == false)
{
tbname = _commonUtils.SplitTableName(tablename);
if (tbname?.Length == 1)
{
var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
if (string.IsNullOrEmpty(userUsers)) return loc1;
tbname = new[] { userUsers, tbname[0] };
}
if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
database = new[] { tbname[0] };
}
else if (database == null || database.Any() == false)
{
var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
if (string.IsNullOrEmpty(userUsers)) return loc1;
database = new[] { userUsers };
}
var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
var sql = string.Format(@"
var sql = $@"
select
a.owner || '.' || a.table_name,
a.owner,
@ -208,7 +223,7 @@ b.comments,
'TABLE'
from all_tables a
left join all_tab_comments b on b.owner = a.owner and b.table_name = a.table_name and b.table_type = 'TABLE'
where a.owner in ({0})", databaseIn);
where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
@ -288,7 +303,7 @@ BEGIN
RETURN TEXT_C1;
END;");
sql = string.Format(@"
sql = $@"
select
a.owner || '.' || a.table_name,
a.column_name,
@ -303,8 +318,8 @@ to_char(b.comments),
nvl(FREESQL_LONG_TO_CHAR_DEFAULT(a.table_name, a.column_name),'')
from all_tab_cols a
left join all_col_comments b on b.owner = a.owner and b.table_name = a.table_name and b.column_name = a.column_name
where a.owner in ({1}) and {0}
", loc8, databaseIn);
where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
";
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
@ -360,7 +375,7 @@ where a.owner in ({1}) and {0}
}
OracleCodeFirst.CreateOracleFunction(_orm);
sql = string.Format(@"
sql = $@"
select
a.table_owner || '.' || a.table_name,
nvl(freesql_long_2_varchar(a.index_name, c.table_name, c.column_position), c.column_name),
@ -375,8 +390,8 @@ all_ind_columns c
where a.index_name = c.index_name
and a.table_owner = c.table_owner
and a.table_name = c.table_name
and a.table_owner in ({1}) and {0}
", loc8, databaseIn);
and {(ignoreCase ? "lower(a.table_owner)" : "a.table_owner")} in ({databaseIn}) and {loc8}
";
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
@ -428,7 +443,9 @@ and a.table_owner in ({1}) and {0}
}
}
sql = string.Format(@"
if (tbname == null)
{
sql = $@"
select
a.owner || '.' || a.table_name,
c.column_name,
@ -462,43 +479,44 @@ and a.owner = c.owner 　　
and a.table_name = c.table_name 　　
and b.owner = d.owner 　　
and b.table_name = d.table_name
and a.owner in ({1}) and {0}
", loc8, databaseIn);
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
and {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
";
ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
if (ds == null) return loc1;
var fkColumns = new Dictionary<string, Dictionary<string, DbForeignInfo>>();
foreach (var row in ds)
{
string table_id = string.Concat(row[0]);
string column = string.Concat(row[1]);
string fk_id = string.Concat(row[2]);
string ref_table_id = string.Concat(row[3]);
bool is_foreign_key = string.Concat(row[4]) == "1";
string referenced_column = string.Concat(row[5]);
if (database.Length == 1)
var fkColumns = new Dictionary<string, Dictionary<string, DbForeignInfo>>();
foreach (var row in ds)
{
table_id = table_id.Substring(table_id.IndexOf('.') + 1);
ref_table_id = ref_table_id.Substring(ref_table_id.IndexOf('.') + 1);
}
if (loc3.ContainsKey(table_id) == false || loc3[table_id].ContainsKey(column) == false) continue;
var loc9 = loc3[table_id][column];
if (loc2.ContainsKey(ref_table_id) == false) continue;
var loc10 = loc2[ref_table_id];
var loc11 = loc3[ref_table_id][referenced_column];
string table_id = string.Concat(row[0]);
string column = string.Concat(row[1]);
string fk_id = string.Concat(row[2]);
string ref_table_id = string.Concat(row[3]);
bool is_foreign_key = string.Concat(row[4]) == "1";
string referenced_column = string.Concat(row[5]);
if (database.Length == 1)
{
table_id = table_id.Substring(table_id.IndexOf('.') + 1);
ref_table_id = ref_table_id.Substring(ref_table_id.IndexOf('.') + 1);
}
if (loc3.ContainsKey(table_id) == false || loc3[table_id].ContainsKey(column) == false) continue;
var loc9 = loc3[table_id][column];
if (loc2.ContainsKey(ref_table_id) == false) continue;
var loc10 = loc2[ref_table_id];
var loc11 = loc3[ref_table_id][referenced_column];
Dictionary<string, DbForeignInfo> loc12 = null;
DbForeignInfo loc13 = null;
if (!fkColumns.TryGetValue(table_id, out loc12))
fkColumns.Add(table_id, loc12 = new Dictionary<string, DbForeignInfo>());
if (!loc12.TryGetValue(fk_id, out loc13))
loc12.Add(fk_id, loc13 = new DbForeignInfo { Table = loc2[table_id], ReferencedTable = loc10 });
loc13.Columns.Add(loc9);
loc13.ReferencedColumns.Add(loc11);
Dictionary<string, DbForeignInfo> loc12 = null;
DbForeignInfo loc13 = null;
if (!fkColumns.TryGetValue(table_id, out loc12))
fkColumns.Add(table_id, loc12 = new Dictionary<string, DbForeignInfo>());
if (!loc12.TryGetValue(fk_id, out loc13))
loc12.Add(fk_id, loc13 = new DbForeignInfo { Table = loc2[table_id], ReferencedTable = loc10 });
loc13.Columns.Add(loc9);
loc13.ReferencedColumns.Add(loc11);
}
foreach (var table_id in fkColumns.Keys)
foreach (var fk in fkColumns[table_id])
loc2[table_id].ForeignsDict.Add(fk.Key, fk.Value);
}
foreach (var table_id in fkColumns.Keys)
foreach (var fk in fkColumns[table_id])
loc2[table_id].ForeignsDict.Add(fk.Key, fk.Value);
foreach (var table_id in loc3.Keys)
{