public List<Script> GetColumnAlterScripts(Table oldTable, Table newTable, TableColumn oldColumn, TableColumn newColumn, List<TableDefaultValueConstraint> defaultValueConstraints)
{
List<Script> scripts = new List<Script>();
DatabaseType databaseType = this.dbInterpreter.DatabaseType;
bool isDefaultValueEquals = ValueHelper.IsStringEquals(ValueHelper.GetTrimedDefaultValue(oldColumn.DefaultValue), newColumn.DefaultValue);
if (!SchemaInfoHelper.IsTableColumnEquals(databaseType, oldColumn, newColumn)
|| !isDefaultValueEquals)
{
if (!isDefaultValueEquals)
{
if (databaseType == DatabaseType.SqlServer)
{
SqlServerScriptGenerator sqlServerScriptGenerator = scriptGenerator as SqlServerScriptGenerator;
TableDefaultValueConstraint defaultValueConstraint = defaultValueConstraints?.FirstOrDefault(item => item.Owner == oldTable.Owner && item.TableName == oldTable.Name && item.ColumnName == oldColumn.Name);
if (defaultValueConstraint != null)
{
scripts.Add(sqlServerScriptGenerator.DropDefaultValueConstraint(defaultValueConstraint));
}
scripts.Add(sqlServerScriptGenerator.AddDefaultValueConstraint(newColumn));
}
}
Script alterColumnScript = scriptGenerator.AlterTableColumn(newTable, newColumn);
if (databaseType == DatabaseType.Oracle)
{
if (!oldColumn.IsNullable && !newColumn.IsNullable)
{
alterColumnScript.Content = Regex.Replace(alterColumnScript.Content, "NOT NULL", "", RegexOptions.IgnoreCase);
}
else if (oldColumn.IsNullable && newColumn.IsNullable)
{
alterColumnScript.Content = Regex.Replace(alterColumnScript.Content, "NULL", "", RegexOptions.IgnoreCase);
}
}
scripts.Add(alterColumnScript);
}
else if (!ValueHelper.IsStringEquals(newColumn.Comment, oldColumn.Comment))
{
scripts.Add(scriptGenerator.SetTableColumnComment(newTable, newColumn, string.IsNullOrEmpty(oldColumn.Comment)));
}
return scripts;
}
public async Task <ContentSaveResult> GenerateChangeScripts(SchemaDesignerInfo schemaDesignerInfo, bool isNew)
{
string validateMsg;
Table table = null;
try
{
bool isValid = this.ValidateModel(schemaDesignerInfo, out validateMsg);
if (!isValid)
{
return(this.GetFaultSaveResult(validateMsg));
}
TableDesignerGenerateScriptsData scriptsData = new TableDesignerGenerateScriptsData();
SchemaInfo schemaInfo = this.GetSchemaInfo(schemaDesignerInfo);
table = schemaInfo.Tables.First();
scriptsData.Table = table;
DbScriptGenerator scriptGenerator = DbScriptGeneratorHelper.GetDbScriptGenerator(this.dbInterpreter);
List <Script> scripts = new List <Script>();
if (isNew)
{
ScriptBuilder scriptBuilder = scriptGenerator.GenerateSchemaScripts(schemaInfo);
scripts = scriptBuilder.Scripts;
}
else
{
#region Alter Table
scripts = new List <Script>();
TableDesignerInfo tableDesignerInfo = schemaDesignerInfo.TableDesignerInfo;
SchemaInfoFilter filter = new SchemaInfoFilter()
{
Strict = true
};
filter.TableNames = new string[] { tableDesignerInfo.OldName };
filter.DatabaseObjectType = DatabaseObjectType.Table
| DatabaseObjectType.TableColumn
| DatabaseObjectType.TablePrimaryKey
| DatabaseObjectType.TableForeignKey
| DatabaseObjectType.TableIndex
| DatabaseObjectType.TableConstraint;
if (this.dbInterpreter.DatabaseType == DatabaseType.Oracle)
{
this.dbInterpreter.Option.IncludePrimaryKeyWhenGetTableIndex = true;
}
SchemaInfo oldSchemaInfo = await this.dbInterpreter.GetSchemaInfoAsync(filter);
Table oldTable = oldSchemaInfo.Tables.FirstOrDefault();
if (oldTable == null)
{
return(this.GetFaultSaveResult($"Table \"{tableDesignerInfo.OldName}\" is not existed"));
}
if (tableDesignerInfo.OldName != tableDesignerInfo.Name)
{
scripts.Add(scriptGenerator.RenameTable(new Table()
{
Owner = tableDesignerInfo.Owner, Name = tableDesignerInfo.OldName
}, tableDesignerInfo.Name));
}
if (!this.IsStringEquals(tableDesignerInfo.Comment, oldTable.Comment))
{
oldTable.Comment = tableDesignerInfo.Comment;
scripts.Add(scriptGenerator.SetTableComment(oldTable, string.IsNullOrEmpty(oldTable.Comment)));
}
#region Columns
List <TableColumnDesingerInfo> columnDesingerInfos = schemaDesignerInfo.TableColumnDesingerInfos;
List <TableColumn> oldColumns = oldSchemaInfo.TableColumns;
List <TableDefaultValueConstraint> defaultValueConstraints = null;
if (this.dbInterpreter.DatabaseType == DatabaseType.SqlServer)
{
defaultValueConstraints = await(this.dbInterpreter as SqlServerInterpreter).GetTableDefautValueConstraintsAsync(filter);
}
foreach (TableColumnDesingerInfo columnDesignerInfo in columnDesingerInfos)
{
TableColumn oldColumn = oldColumns.FirstOrDefault(item => item.Name.ToLower() == columnDesignerInfo.Name.ToLower());
TableColumn newColumn = schemaInfo.TableColumns.FirstOrDefault(item => item.Name == columnDesignerInfo.Name);
if (oldColumn == null)
{
scripts.Add(scriptGenerator.AddTableColumn(table, newColumn));
}
else
{
if (!this.IsValueEqualsIgnoreCase(columnDesignerInfo.OldName, columnDesignerInfo.Name))
{
scripts.Add(scriptGenerator.RenameTableColumn(table, oldColumn, newColumn.Name));
}
bool isDefaultValueEquals = this.IsStringEquals(ValueHelper.GetTrimedDefaultValue(oldColumn.DefaultValue), newColumn.DefaultValue);
if (!SchemaInfoHelper.IsTableColumnEquals(this.dbInterpreter.DatabaseType, oldColumn, newColumn) ||
!isDefaultValueEquals)
{
if (!isDefaultValueEquals)
{
if (this.dbInterpreter.DatabaseType == DatabaseType.SqlServer)
{
SqlServerScriptGenerator sqlServerScriptGenerator = scriptGenerator as SqlServerScriptGenerator;
TableDefaultValueConstraint defaultValueConstraint = defaultValueConstraints?.FirstOrDefault(item => item.Owner == oldTable.Owner && item.TableName == oldTable.Name && item.ColumnName == oldColumn.Name);
if (defaultValueConstraint != null)
{
scripts.Add(sqlServerScriptGenerator.DropDefaultValueConstraint(defaultValueConstraint));
}
scripts.Add(sqlServerScriptGenerator.AddDefaultValueConstraint(newColumn));
}
}
Script alterColumnScript = scriptGenerator.AlterTableColumn(table, newColumn);
if (this.dbInterpreter.DatabaseType == DatabaseType.Oracle)
{
if (!oldColumn.IsNullable && !newColumn.IsNullable)
{
alterColumnScript.Content = Regex.Replace(alterColumnScript.Content, "NOT NULL", "", RegexOptions.IgnoreCase);
}
else if (oldColumn.IsNullable && newColumn.IsNullable)
{
alterColumnScript.Content = Regex.Replace(alterColumnScript.Content, "NULL", "", RegexOptions.IgnoreCase);
}
}
scripts.Add(alterColumnScript);
}
else if (!this.IsStringEquals(columnDesignerInfo.Comment, oldColumn.Comment))
{
scripts.Add(scriptGenerator.SetTableColumnComment(table, newColumn, string.IsNullOrEmpty(oldColumn.Comment)));
}
}
}
foreach (TableColumn oldColumn in oldColumns)
{
if (!columnDesingerInfos.Any(item => item.Name == oldColumn.Name))
{
scripts.Add(scriptGenerator.DropTableColumn(oldColumn));
}
}
#endregion
#region Primary Key
TablePrimaryKey oldPrimaryKey = oldSchemaInfo.TablePrimaryKeys.FirstOrDefault();
TablePrimaryKey newPrimaryKey = schemaInfo.TablePrimaryKeys.FirstOrDefault();
bool primaryKeyChanged = !SchemaInfoHelper.IsPrimaryKeyEquals(oldPrimaryKey, newPrimaryKey, schemaDesignerInfo.IgnoreTableIndex, true);
Action alterPrimaryKey = () =>
{
if (oldPrimaryKey != null)
{
scripts.Add(scriptGenerator.DropPrimaryKey(oldPrimaryKey));
}
scripts.Add(scriptGenerator.AddPrimaryKey(newPrimaryKey));
if (!string.IsNullOrEmpty(newPrimaryKey.Comment))
{
this.SetTableChildComment(scripts, scriptGenerator, newPrimaryKey, true);
}
};
if (primaryKeyChanged)
{
alterPrimaryKey();
}
else if (!ValueHelper.IsStringEquals(oldPrimaryKey?.Comment, newPrimaryKey?.Comment))
{
if (this.dbInterpreter.DatabaseType == DatabaseType.SqlServer)
{
this.SetTableChildComment(scripts, scriptGenerator, newPrimaryKey, string.IsNullOrEmpty(oldPrimaryKey?.Comment));
}
else
{
alterPrimaryKey();
}
}
#endregion
#region Index
if (!schemaDesignerInfo.IgnoreTableIndex)
{
IEnumerable <TableIndex> oldIndexes = oldSchemaInfo.TableIndexes.Where(item => !item.IsPrimary);
IEnumerable <TableIndexDesignerInfo> indexDesignerInfos = schemaDesignerInfo.TableIndexDesingerInfos.Where(item => !item.IsPrimary);
foreach (TableIndexDesignerInfo indexDesignerInfo in indexDesignerInfos)
{
TableIndex newIndex = schemaInfo.TableIndexes.FirstOrDefault(item => item.Name == indexDesignerInfo.Name);
TableIndex oldIndex = oldIndexes.FirstOrDefault(item => item.Name == indexDesignerInfo.OldName);
if (this.IsValueEqualsIgnoreCase(indexDesignerInfo.OldName, indexDesignerInfo.Name) &&
this.IsValueEqualsIgnoreCase(indexDesignerInfo.OldType, indexDesignerInfo.Type)
)
{
if (oldIndex != null && this.IsStringEquals(oldIndex.Comment, newIndex.Comment) && SchemaInfoHelper.IsIndexColumnsEquals(oldIndex.Columns, newIndex.Columns))
{
continue;
}
}
if (oldIndex != null)
{
scripts.Add(scriptGenerator.DropIndex(oldIndex));
}
scripts.Add(scriptGenerator.AddIndex(newIndex));
if (!string.IsNullOrEmpty(newIndex.Comment))
{
this.SetTableChildComment(scripts, scriptGenerator, newIndex, true);
}
}
foreach (TableIndex oldIndex in oldIndexes)
{
if (!indexDesignerInfos.Any(item => item.Name == oldIndex.Name))
{
scripts.Add(scriptGenerator.DropIndex(oldIndex));
}
}
}
#endregion
#region Foreign Key
if (!schemaDesignerInfo.IgnoreTableForeignKey)
{
List <TableForeignKey> oldForeignKeys = oldSchemaInfo.TableForeignKeys;
IEnumerable <TableForeignKeyDesignerInfo> foreignKeyDesignerInfos = schemaDesignerInfo.TableForeignKeyDesignerInfos;
foreach (TableForeignKeyDesignerInfo foreignKeyDesignerInfo in foreignKeyDesignerInfos)
{
TableForeignKey newForeignKey = schemaInfo.TableForeignKeys.FirstOrDefault(item => item.Name == foreignKeyDesignerInfo.Name);
TableForeignKey oldForeignKey = oldForeignKeys.FirstOrDefault(item => item.Name == foreignKeyDesignerInfo.OldName);
if (this.IsValueEqualsIgnoreCase(foreignKeyDesignerInfo.OldName, foreignKeyDesignerInfo.Name) &&
foreignKeyDesignerInfo.UpdateCascade == oldForeignKey.UpdateCascade &&
foreignKeyDesignerInfo.DeleteCascade == oldForeignKey.DeleteCascade)
{
if (oldForeignKey != null && this.IsStringEquals(oldForeignKey.Comment, newForeignKey.Comment) &&
SchemaInfoHelper.IsForeignKeyColumnsEquals(oldForeignKey.Columns, newForeignKey.Columns))
{
continue;
}
}
if (oldForeignKey != null)
{
scripts.Add(scriptGenerator.DropForeignKey(oldForeignKey));
}
scripts.Add(scriptGenerator.AddForeignKey(newForeignKey));
if (!string.IsNullOrEmpty(newForeignKey.Comment))
{
this.SetTableChildComment(scripts, scriptGenerator, newForeignKey, true);
}
}
foreach (TableForeignKey oldForeignKey in oldForeignKeys)
{
if (!foreignKeyDesignerInfos.Any(item => item.Name == oldForeignKey.Name))
{
scripts.Add(scriptGenerator.DropForeignKey(oldForeignKey));
}
}
}
#endregion
#region Constraint
if (!schemaDesignerInfo.IgnoreTableConstraint)
{
List <TableConstraint> oldConstraints = oldSchemaInfo.TableConstraints;
IEnumerable <TableConstraintDesignerInfo> constraintDesignerInfos = schemaDesignerInfo.TableConstraintDesignerInfos;
foreach (TableConstraintDesignerInfo constraintDesignerInfo in constraintDesignerInfos)
{
TableConstraint newConstraint = schemaInfo.TableConstraints.FirstOrDefault(item => item.Name == constraintDesignerInfo.Name);
TableConstraint oldConstraint = oldConstraints.FirstOrDefault(item => item.Name == constraintDesignerInfo.OldName);
if (this.IsValueEqualsIgnoreCase(constraintDesignerInfo.OldName, constraintDesignerInfo.Name))
{
if (oldConstraint != null && this.IsStringEquals(oldConstraint.Comment, newConstraint.Comment))
{
continue;
}
}
if (oldConstraint != null)
{
scripts.Add(scriptGenerator.DropCheckConstraint(oldConstraint));
}
scripts.Add(scriptGenerator.AddCheckConstraint(newConstraint));
if (!string.IsNullOrEmpty(newConstraint.Comment))
{
this.SetTableChildComment(scripts, scriptGenerator, newConstraint, true);
}
}
foreach (TableConstraint oldConstraint in oldConstraints)
{
if (!constraintDesignerInfos.Any(item => item.Name == oldConstraint.Name))
{
scripts.Add(scriptGenerator.DropCheckConstraint(oldConstraint));
}
}
}
#endregion
#endregion
}
scriptsData.Scripts.AddRange(scripts);
return(new ContentSaveResult()
{
IsOK = true, ResultData = scriptsData
});
}
catch (Exception ex)
{
return(this.GetFaultSaveResult(ExceptionHelper.GetExceptionDetails(ex)));
}
}
public Script DropDefaultValueConstraint(TableDefaultValueConstraint defaultValueConstraint)
{
return(new DropDbObjectScript <TableDefaultValueConstraint>(this.GetDropConstraintSql(defaultValueConstraint)));
}
