public bool ExistsTable(string name, bool ignoreCase)
{
if (string.IsNullOrEmpty(name))
{
return(false);
}
var tbname = _commonUtils.SplitTableName(name);
if (tbname?.Length == 1)
{
var userId = (_orm.Ado.MasterPool as DamengConnectionPool)?.UserId;
if (string.IsNullOrEmpty(userId))
{
using (var conn = _orm.Ado.MasterPool.Get())
{
userId = DamengConnectionPool.GetUserId(conn.Value.ConnectionString);
}
}
tbname = new[] { userId, tbname[0] };
}
if (ignoreCase)
{
tbname = tbname.Select(a => a.ToLower()).ToArray();
}
var sql = $" select 1 from all_tab_comments where {(ignoreCase ? "lower(owner)" : "owner")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(table_name)" : "table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}";
return(string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1");
}
public DamengConnectionPool(string name, string connectionString, Action availableHandler, Action unavailableHandler) : base(null)
{
this.UserId = DamengConnectionPool.GetUserId(connectionString);
this.availableHandler = availableHandler;
this.unavailableHandler = unavailableHandler;
var policy = new DamengConnectionPoolPolicy
{
_pool = this,
Name = name
};
this.Policy = policy;
policy.ConnectionString = connectionString;
}
public DamengAdo(CommonUtils util, string masterConnectionString, string[] slaveConnectionStrings, Func <DbConnection> connectionFactory) : base(DataType.Dameng, masterConnectionString, slaveConnectionStrings)
{
base._util = util;
if (connectionFactory != null)
{
MasterPool = new FreeSql.Internal.CommonProvider.DbConnectionPool(DataType.Dameng, connectionFactory);
return;
}
if (!string.IsNullOrEmpty(masterConnectionString))
{
MasterPool = new DamengConnectionPool("主库", masterConnectionString, null, null);
}
if (slaveConnectionStrings != null)
{
foreach (var slaveConnectionString in slaveConnectionStrings)
{
var slavePool = new DamengConnectionPool($"从库{SlavePools.Count + 1}", slaveConnectionString, () => Interlocked.Decrement(ref slaveUnavailables), () => Interlocked.Increment(ref slaveUnavailables));
SlavePools.Add(slavePool);
}
}
}
protected override string GetComparisonDDLStatements(params TypeAndName[] objects)
{
var userId = (_orm.Ado.MasterPool as DamengConnectionPool)?.UserId;
if (string.IsNullOrEmpty(userId))
{
using (var conn = _orm.Ado.MasterPool.Get())
{
userId = DamengConnectionPool.GetUserId(conn.Value.ConnectionString);
}
}
var seqcols = new List <NaviteTuple <ColumnInfo, string[], bool> >(); //序列：列，表，自增
var seqnameDel = new List <string>(); //要删除的序列+触发器
var sb = new StringBuilder();
var sbDeclare = new StringBuilder();
foreach (var obj in objects)
{
if (sb.Length > 0)
{
sb.Append("\r\n");
}
var tb = _commonUtils.GetTableByEntity(obj.entityType);
if (tb == null)
{
throw new Exception($"类型 {obj.entityType.FullName} 不可迁移");
}
if (tb.Columns.Any() == false)
{
throw new Exception($"类型 {obj.entityType.FullName} 不可迁移，可迁移属性0个");
}
var tbname = _commonUtils.SplitTableName(tb.DbName);
if (tbname?.Length == 1)
{
tbname = new[] { userId, tbname[0] }
}
;
var tboldname = _commonUtils.SplitTableName(tb.DbOldName); //旧表名
if (tboldname?.Length == 1)
{
tboldname = new[] { userId, tboldname[0] }
}
;
var primaryKeyName = (obj.entityType.GetCustomAttributes(typeof(OraclePrimaryKeyNameAttribute), false)?.FirstOrDefault() as OraclePrimaryKeyNameAttribute)?.Name;
if (string.IsNullOrEmpty(obj.tableName) == false)
{
var tbtmpname = _commonUtils.SplitTableName(obj.tableName);
if (tbtmpname?.Length == 1)
{
tbtmpname = new[] { userId, tbtmpname[0] }
}
;
if (tbname[0] != tbtmpname[0] || tbname[1] != tbtmpname[1])
{
tbname = tbtmpname;
tboldname = null;
primaryKeyName = null;
}
}
//codefirst 不支持表名中带 .
if (string.Compare(tbname[0], userId) != 0 && _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from sys.dba_users where username={0}", tbname[0])) == null) //创建数据库
{
throw new NotImplementedException($"达梦 CodeFirst 不支持代码创建 tablespace 与 schemas {tbname[0]}");
}
var sbalter = new StringBuilder();
var istmpatler = false; //创建临时表，导入数据，删除旧表，修改
if (_orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from all_tab_comments where owner={0} and table_name={1}", tbname)) == null)
{ //表不存在
if (tboldname != null)
{
if (_orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from all_tab_comments where owner={0} and table_name={1}", tboldname)) == null)
{
//模式或表不存在
tboldname = null;
}
}
if (tboldname == null)
{
//创建表
var createTableName = _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}");
sb.Append("execute immediate 'CREATE TABLE ").Append(createTableName).Append(" ( ");
foreach (var tbcol in tb.ColumnsByPosition)
{
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType).Append(",");
if (tbcol.Attribute.IsIdentity == true)
{
seqcols.Add(NaviteTuple.Create(tbcol, tbname, true));
}
}
if (tb.Primarys.Any())
{
var pkname = primaryKeyName ?? $"{tbname[0]}_{tbname[1]}_pk1";
sb.Append(" \r\n CONSTRAINT ").Append(_commonUtils.QuoteSqlName(pkname)).Append(" PRIMARY KEY (");
foreach (var tbcol in tb.Primarys)
{
sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
}
sb.Remove(sb.Length - 2, 2).Append("),");
}
sb.Remove(sb.Length - 1, 1);
sb.Append("\r\n) LOGGING ';\r\n");
//创建表的索引
foreach (var uk in tb.Indexes)
{
sb.Append("execute immediate 'CREATE ");
if (uk.IsUnique)
{
sb.Append("UNIQUE ");
}
sb.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(createTableName).Append("(");
foreach (var tbcol in uk.Columns)
{
sb.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
if (tbcol.IsDesc)
{
sb.Append(" DESC");
}
sb.Append(", ");
}
sb.Remove(sb.Length - 2, 2).Append(")';\r\n");
}
//备注
foreach (var tbcol in tb.ColumnsByPosition)
{
if (string.IsNullOrEmpty(tbcol.Comment) == false)
{
sb.Append("execute immediate 'COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment).Replace("'", "''")).Append("';\r\n");
}
}
if (string.IsNullOrEmpty(tb.Comment) == false)
{
sb.Append("execute immediate 'COMMENT ON TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tb.Comment).Replace("'", "''")).Append("';\r\n");
}
continue;
}
//如果新表，旧表在一个模式下，直接修改表名
if (string.Compare(tbname[0], tboldname[0], true) == 0)
{
sbalter.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}")).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}")).Append("';\r\n");
}
else
{
//如果新表，旧表不在一起，创建新表，导入数据，删除旧表
istmpatler = true;
}
}
else
{
tboldname = null; //如果新表已经存在，不走改表名逻辑
}
//对比字段，只可以修改类型、增加字段、有限的修改字段名；保证安全不删除字段
var sql = _commonUtils.FormatSql($@"
select
a.column_name,
a.data_type,
a.data_length,
a.data_precision,
a.data_scale,
a.char_used,
case when a.nullable = 'N' then 0 else 1 end,
nvl((select 1 from user_sequences where upper(sequence_name)=upper('{Utils.GetCsName((tboldname ?? tbname).Last())}_seq_'||a.column_name) and rownum < 2), 0),
nvl((select 1 from user_triggers where upper(trigger_name)=upper('{Utils.GetCsName((tboldname ?? tbname).Last())}_seq_'||a.column_name||'TI') and rownum < 2), 0),
b.comments
from all_tab_columns 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={{0}} and a.table_name={{1}}", tboldname ?? tbname);
var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
var tbstruct = ds.ToDictionary(a => string.Concat(a[0]), a =>
{
var sqlType = GetDamengSqlTypeFullName(a);
return(new
{
column = string.Concat(a[0]),
sqlType,
is_nullable = string.Concat(a[6]) == "1",
is_identity = string.Concat(a[7]) == "1" && string.Concat(a[8]) == "1",
comment = string.Concat(a[9])
});
}, StringComparer.CurrentCultureIgnoreCase);
if (istmpatler == false)
{
foreach (var tbcol in tb.ColumnsByPosition)
{
var dbtypeNoneNotNull = Regex.Replace(tbcol.Attribute.DbType, @"NOT\s+NULL", "NULL");
if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
{
var isCommentChanged = tbstructcol.comment != (tbcol.Comment ?? "");
if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false)
{
istmpatler = true;
if (istmpatler && tbcol.Attribute.DbType.StartsWith("varchar", StringComparison.CurrentCultureIgnoreCase) && tbstructcol.sqlType.StartsWith("varchar2", StringComparison.CurrentCultureIgnoreCase) &&
Regex.Match(tbcol.Attribute.DbType, @"\(\d+").Groups[0].Value == Regex.Match(tbstructcol.sqlType, @"\(\d+").Groups[0].Value)
{
istmpatler = false;
}
if (istmpatler && Regex.IsMatch(tbcol.Attribute.DbType, @"\(\d+") == false && Regex.IsMatch(tbstructcol.sqlType, @"\(\d+") &&
string.Compare(tbcol.Attribute.DbType, Regex.Replace(tbstructcol.sqlType, @"\([^\)]+\)", ""), StringComparison.CurrentCultureIgnoreCase) == 0)
{
istmpatler = false;
}
if (istmpatler)
{
break;
}
}
//sbalter.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" MODIFY (").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(dbtypeNoneNotNull).Append(")';\r\n");
if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
{
if (tbcol.Attribute.IsNullable == false)
{
sbalter.Append("execute immediate 'UPDATE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" SET ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" = ").Append(tbcol.DbDefaultValue.Replace("'", "''")).Append(" WHERE ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" IS NULL';\r\n");
}
sbalter.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" MODIFY ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.IsNullable == true ? "" : "NOT").Append(" NULL';\r\n");
}
if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0)
{
if (tbstructcol.is_identity)
{
seqnameDel.Add(Utils.GetCsName($"{tbname[1]}_seq_{tbstructcol.column}"));
}
//修改列名
sbalter.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" RENAME COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" TO ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append("';\r\n");
if (tbcol.Attribute.IsIdentity)
{
seqcols.Add(NaviteTuple.Create(tbcol, tbname, tbcol.Attribute.IsIdentity == true));
}
}
else if (tbcol.Attribute.IsIdentity != tbstructcol.is_identity)
{
seqcols.Add(NaviteTuple.Create(tbcol, tbname, tbcol.Attribute.IsIdentity == true));
}
if (isCommentChanged)
{
sbalter.Append("execute immediate 'COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? "").Replace("'", "''")).Append("';\r\n");
}
continue;
}
//添加列
sbalter.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD (").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(dbtypeNoneNotNull).Append(")';\r\n");
if (tbcol.Attribute.IsNullable == false)
{
sbalter.Append("execute immediate 'UPDATE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" SET ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" = ").Append(tbcol.DbDefaultValue.Replace("'", "''")).Append("';\r\n");
sbalter.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" MODIFY ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" NOT NULL';\r\n");
}
if (tbcol.Attribute.IsIdentity == true)
{
seqcols.Add(NaviteTuple.Create(tbcol, tbname, tbcol.Attribute.IsIdentity == true));
}
if (string.IsNullOrEmpty(tbcol.Comment) == false)
{
sbalter.Append("execute immediate 'COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? "").Replace("'", "''")).Append("';\r\n");
}
}
}
if (istmpatler == false)
{
var dsuksql = _commonUtils.FormatSql(@"
select
c.column_name,
a.index_name,
case when c.descend = 'DESC' then 1 else 0 end,
case when a.uniqueness = 'UNIQUE' then 1 else 0 end
from all_indexes a,
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.owner in ({0}) and a.table_name in ({1})
and not exists(select 1 from all_constraints where index_name = a.index_name and constraint_type = 'P')", tboldname ?? tbname);
var dsuk = _orm.Ado.ExecuteArray(CommandType.Text, dsuksql).Select(a => new[] { string.Concat(a[0]).Trim('"'), string.Concat(a[1]), string.Concat(a[2]), string.Concat(a[3]) }).ToArray();
foreach (var uk in tb.Indexes)
{
if (string.IsNullOrEmpty(uk.Name) || uk.Columns.Any() == false)
{
continue;
}
var dsukfind1 = dsuk.Where(a => string.Compare(a[1], uk.Name, true) == 0).ToArray();
if (dsukfind1.Any() == false || dsukfind1.Length != uk.Columns.Length || dsukfind1.Where(a => uk.Columns.Where(b => (a[3] == "1") == uk.IsUnique && string.Compare(b.Column.Attribute.Name, a[0], true) == 0 && (a[2] == "1") == b.IsDesc).Any()).Count() != uk.Columns.Length)
{
if (dsukfind1.Any())
{
sbalter.Append("execute immediate 'DROP INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append("';\r\n");
}
sbalter.Append("execute immediate 'CREATE ");
if (uk.IsUnique)
{
sbalter.Append("UNIQUE ");
}
sbalter.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append("(");
foreach (var tbcol in uk.Columns)
{
sbalter.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
if (tbcol.IsDesc)
{
sbalter.Append(" DESC");
}
sbalter.Append(", ");
}
sbalter.Remove(sbalter.Length - 2, 2).Append(")';\r\n");
}
}
}
if (istmpatler == false)
{
var dbcomment = string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(@" select comments from all_tab_comments where owner = {0} and table_name = {1} and table_type = 'TABLE'", tbname[0], tbname[1])));
if (dbcomment != (tb.Comment ?? ""))
{
sb.Append("execute immediate 'COMMENT ON TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tb.Comment).Replace("'", "''")).Append("';\r\n");
}
sb.Append(sbalter);
continue;
}
var oldpk = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(@" select constraint_name from user_constraints where owner={0} and table_name={1} and constraint_type='P'", tbname))?.ToString();
//if (string.IsNullOrEmpty(oldpk) == false)
// sb.Append("execute immediate 'ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP CONSTRAINT ").Append(_commonUtils.QuoteSqlName(oldpk)).Append("';\r\n");
//执行失败(语句1) 试图删除聚集主键
//创建临时表，数据导进临时表，然后删除原表，将临时表改名为原表名
var tablename = tboldname == null?_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}") : _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}");
var tmptablename = _commonUtils.QuoteSqlName($"{tbname[0]}.FTmp_{tbname[1]}");
//创建临时表
sb.Append("execute immediate 'CREATE TABLE ").Append(tmptablename).Append(" ( ");
foreach (var tbcol in tb.ColumnsByPosition)
{
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType).Append(",");
if (tbcol.Attribute.IsIdentity == true)
{
seqcols.Add(NaviteTuple.Create(tbcol, tbname, true));
}
}
if (tb.Primarys.Any())
{
var pkname = primaryKeyName ?? $"{tbname[0]}_{tbname[1]}_pk1";
if (string.IsNullOrEmpty(oldpk) == false && oldpk == pkname)
{
pkname = $"{pkname}1";
}
sb.Append(" \r\n CONSTRAINT ").Append(_commonUtils.QuoteSqlName(pkname)).Append(" PRIMARY KEY (");
foreach (var tbcol in tb.Primarys)
{
sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
}
sb.Remove(sb.Length - 2, 2).Append("),");
}
sb.Remove(sb.Length - 1, 1);
sb.Append("\r\n) LOGGING ';\r\n");
//备注
foreach (var tbcol in tb.ColumnsByPosition)
{
if (string.IsNullOrEmpty(tbcol.Comment) == false)
{
sb.Append("execute immediate 'COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.FTmp_{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment).Replace("'", "''")).Append("';\r\n");
}
}
if (string.IsNullOrEmpty(tb.Comment) == false)
{
sb.Append("execute immediate 'COMMENT ON TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.FTmp_{tbname[1]}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tb.Comment).Replace("'", "''")).Append("';\r\n");
}
sb.Append("execute immediate 'INSERT INTO ").Append(tmptablename).Append(" (");
foreach (var tbcol in tb.ColumnsByPosition)
{
sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
}
sb.Remove(sb.Length - 2, 2).Append(")\r\nSELECT ");
foreach (var tbcol in tb.ColumnsByPosition)
{
var insertvalue = "NULL";
if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
{
insertvalue = _commonUtils.QuoteSqlName(tbstructcol.column);
if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false)
{
var dbtypeNoneNotNull = Regex.Replace(tbcol.Attribute.DbType, @"(NOT\s+)?NULL", "");
insertvalue = $"cast({insertvalue} as {dbtypeNoneNotNull})";
}
if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
{
insertvalue = $"nvl({insertvalue},{tbcol.DbDefaultValue})";
}
}
else if (tbcol.Attribute.IsNullable == false)
{
insertvalue = tbcol.DbDefaultValue;
}
sb.Append(insertvalue.Replace("'", "''")).Append(", ");
}
sb.Remove(sb.Length - 2, 2).Append(" FROM ").Append(tablename).Append("';\r\n");
sb.Append("execute immediate 'DROP TABLE ").Append(tablename).Append("';\r\n");
sb.Append("execute immediate 'ALTER TABLE ").Append(tmptablename).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}")).Append("';\r\n");
//创建表的索引
foreach (var uk in tb.Indexes)
{
sb.Append("execute immediate 'CREATE ");
if (uk.IsUnique)
{
sb.Append("UNIQUE ");
}
sb.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(tablename).Append("(");
foreach (var tbcol in uk.Columns)
{
sb.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
if (tbcol.IsDesc)
{
sb.Append(" DESC");
}
sb.Append(", ");
}
sb.Remove(sb.Length - 2, 2).Append(")';\r\n");
}
}
Dictionary <string, bool> dicDeclare = new Dictionary <string, bool>();
Action <string> dropSequence = seqname =>
{
if (dicDeclare.ContainsKey(seqname) == false)
{
sbDeclare.Append("\r\nIS").Append(seqname).Append(" NUMBER; \r\n");
dicDeclare.Add(seqname, true);
}
sb.Append("IS").Append(seqname).Append(" := 0; \r\n")
.Append(" select count(1) into IS").Append(seqname).Append(_commonUtils.FormatSql(" from user_sequences where sequence_name={0}; \r\n", seqname))
.Append("if IS").Append(seqname).Append(" > 0 then \r\n")
.Append(" execute immediate 'DROP SEQUENCE ").Append(_commonUtils.QuoteSqlName(seqname)).Append("';\r\n")
.Append("end if; \r\n");
};
Action <string> dropTrigger = tiggerName =>
{
if (dicDeclare.ContainsKey(tiggerName) == false)
{
sbDeclare.Append("\r\nIS").Append(tiggerName).Append(" NUMBER; \r\n");
dicDeclare.Add(tiggerName, true);
}
sb.Append("IS").Append(tiggerName).Append(" := 0; \r\n")
.Append(" select count(1) into IS").Append(tiggerName).Append(_commonUtils.FormatSql(" from user_triggers where trigger_name={0}; \r\n", tiggerName))
.Append("if IS").Append(tiggerName).Append(" > 0 then \r\n")
.Append(" execute immediate 'DROP TRIGGER ").Append(_commonUtils.QuoteSqlName(tiggerName)).Append("';\r\n")
.Append("end if; \r\n");
};
foreach (var seqname in seqnameDel)
{
dropSequence(seqname);
dropTrigger(seqname + "TI");
}
foreach (var seqcol in seqcols)
{
var tbname = seqcol.Item2;
var seqname = Utils.GetCsName($"{tbname[1]}_seq_{seqcol.Item1.Attribute.Name}").ToUpper();
var tiggerName = seqname + "TI";
var tbname2 = _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}");
var colname2 = _commonUtils.QuoteSqlName(seqcol.Item1.Attribute.Name);
dropSequence(seqname);
if (seqcol.Item3)
{
var startWith = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from all_tab_columns where owner={0} and table_name={1} and column_name={2}", tbname[0], tbname[1], seqcol.Item1.Attribute.Name)) == null ? 1 :
_orm.Ado.ExecuteScalar(CommandType.Text, $" select nvl(max({colname2})+1,1) from {tbname2}");
sb.Append("execute immediate 'CREATE SEQUENCE ").Append(_commonUtils.QuoteSqlName(seqname)).Append(" start with ").Append(startWith).Append("';\r\n");
sb.Append("execute immediate 'CREATE OR REPLACE TRIGGER ").Append(_commonUtils.QuoteSqlName(tiggerName))
.Append(" \r\nbefore insert on ").Append(tbname2)
.Append(" \r\nfor each row \r\nbegin\r\nselect ").Append(_commonUtils.QuoteSqlName(seqname))
.Append(".nextval into :new.").Append(colname2).Append(" from dual;\r\nend;';\r\n");
}
else
{
dropTrigger(tiggerName);
}
}
if (sbDeclare.Length > 0)
{
sbDeclare.Insert(0, "declare ");
}
return(sb.Length == 0 ? null : sb.Insert(0, "BEGIN \r\n").Insert(0, sbDeclare.ToString()).Append("END;").ToString());
}