protected override void Generate([NotNull] MigrationOperation operation, [CanBeNull] IModel model, [NotNull] MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var createDatabaseOperation = operation as MySqlCreateDatabaseOperation;
if (createDatabaseOperation != null)
{
Generate(createDatabaseOperation, model, builder);
builder.EndCommand();
return;
}
var dropDatabaseOperation = operation as MySqlDropDatabaseOperation;
if (dropDatabaseOperation is MySqlDropDatabaseOperation)
{
Generate(dropDatabaseOperation, model, builder);
builder.EndCommand();
return;
}
base.Generate(operation, model, builder);
}
protected override void Generate(RenameIndexOperation operation, IModel model, MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
if (model == null)
{
throw new NotSupportedException(string.Format(NotSupported, operation.GetType().Name));
}
var index = FindEntityType(model, null, operation.Table).GetIndexes().Single(i => _annotations.For(i).Name == operation.NewName);
var dropIndexOperation = new DropIndexOperation
{
Name = operation.Name,
IsDestructiveChange = true,
Table = operation.Table
};
builder.EndCommand();
Generate(dropIndexOperation, model, builder);
var createIndexOperation = new CreateIndexOperation
{
Columns = index.Properties.Select(p => p.Name).ToArray(),
IsUnique = index.IsUnique,
Name = operation.NewName,
Table = operation.Table
};
builder.EndCommand();
Generate(createIndexOperation, model, builder);
}
protected override void Generate(AlterColumnOperation operation, IModel model, MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder
.EndCommand()
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table))
.Append(" ALTER COLUMN ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name))
.Append(" DROP DEFAULT")
.AppendLine();
builder
.EndCommand()
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table))
.Append(" ALTER COLUMN ");
ColumnDefinition(
null,
operation.Table,
operation.Name,
operation.ClrType,
operation.ColumnType,
operation.IsUnicode,
operation.MaxLength,
operation.IsRowVersion,
operation.IsNullable,
/*defaultValue:*/ null,
/*defaultValueSql:*/ null,
operation.ComputedColumnSql,
/*identity:*/ false,
operation,
model,
builder);
builder.AppendLine();
if ((operation.DefaultValue != null) || (operation.DefaultValueSql != null))
{
builder
.EndCommand()
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table))
.Append(" ALTER COLUMN ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name))
.Append(" SET ");
DefaultValue(operation.DefaultValue, operation.DefaultValueSql, builder);
}
}
protected override void Generate(
RenameTableOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var name = operation.Name;
if (operation.NewName != null)
{
var qualifiedName = new StringBuilder();
if (operation.Schema != null)
{
qualifiedName
.Append(operation.Schema)
.Append(".");
}
qualifiedName.Append(operation.Name);
Rename(qualifiedName.ToString(), operation.NewName, builder);
name = operation.NewName;
}
if (operation.NewSchema != null)
{
Transfer(operation.NewSchema, operation.Schema, name, builder);
}
builder.EndCommand();
}
protected override void Generate(
RenameIndexOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
if (string.IsNullOrEmpty(operation.Table))
{
throw new InvalidOperationException(OracleStrings.IndexTableRequired);
}
var qualifiedName = new StringBuilder();
if (operation.Schema != null)
{
qualifiedName
.Append(operation.Schema)
.Append(".");
}
qualifiedName
.Append(operation.Table)
.Append(".")
.Append(operation.Name);
Rename(qualifiedName.ToString(), operation.NewName, "INDEX", builder);
builder.EndCommand();
}
public override IReadOnlyList <MigrationCommand> Generate(IReadOnlyList <MigrationOperation> operations, IModel model = null)
{
Check.NotNull(operations, nameof(operations));
var builder = new MigrationCommandListBuilder(_commandBuilderFactory);
foreach (var operation in operations)
{
Generate(operation, model, builder);
builder
.EndCommand();
}
var list = builder.GetCommandList();
//HACK to force logging of migration SQL
foreach (var migrationCommand in list)
{
if (!string.IsNullOrEmpty(migrationCommand.CommandText))
{
//TODO ErikEJ Investigate how to fix this?
//_logger.Logger.LogCommandExecuted(new SqlCeCommand(migrationCommand.CommandText), Stopwatch.GetTimestamp(), Stopwatch.GetTimestamp());
}
}
return(list);
}
protected override void Generate(
RenameColumnOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var qualifiedName = new StringBuilder();
if (operation.Schema != null)
{
qualifiedName
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Schema))
.Append(".");
}
qualifiedName.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table));
builder
.Append("ALTER TABLE ")
.Append(qualifiedName)
.Append(" RENAME COLUMN ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name))
.Append(" TO ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.NewName));
builder.EndCommand();
}
protected override void Generate(
InsertDataOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var sqlBuilder = new StringBuilder();
foreach (var modificationCommand in operation.GenerateModificationCommands(model))
{
SqlGenerator.AppendInsertOperation(
sqlBuilder,
modificationCommand,
0);
}
builder
.AppendLine("BEGIN")
.Append(sqlBuilder)
.Append("END")
.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
builder.EndCommand();
}
protected virtual void EndStatement(
[NotNull] MigrationCommandListBuilder builder,
bool suppressTransaction = false)
{
Check.NotNull(builder, nameof(builder));
builder.EndCommand(suppressTransaction);
}
protected override void Generate(
InsertDataOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder.Append("IF EXISTS (SELECT * FROM [sys].[identity_columns] WHERE [object_id] = OBJECT_ID(N'");
if (operation.Schema != null)
{
builder
.Append(Dependencies.SqlGenerationHelper.EscapeLiteral(operation.Schema))
.Append(".");
}
builder
.Append(Dependencies.SqlGenerationHelper.EscapeLiteral(operation.Table))
.AppendLine("'))");
using (builder.Indent())
{
builder
.Append("SET IDENTITY_INSERT ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table, operation.Schema))
.Append(" ON")
.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
}
base.Generate(operation, model, builder, terminate: false);
builder
.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator)
.Append("IF EXISTS (SELECT * FROM [sys].[identity_columns] WHERE [object_id] = OBJECT_ID(N'");
if (operation.Schema != null)
{
builder
.Append(Dependencies.SqlGenerationHelper.EscapeLiteral(operation.Schema))
.Append(".");
}
builder
.Append(Dependencies.SqlGenerationHelper.EscapeLiteral(operation.Table))
.AppendLine("'))");
using (builder.Indent())
{
builder
.Append("SET IDENTITY_INSERT ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table, operation.Schema))
.Append(" OFF")
.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
}
builder.EndCommand();
}
protected override void Generate(DropIndexOperation operation, IModel model, MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder
.EndCommand()
.Append("DROP INDEX ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table))
.Append(".")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name));
}
protected override void Generate(RenameTableOperation operation, IModel model, MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
if (operation.NewName != null)
{
builder
.EndCommand()
.Append("sp_rename N'")
.Append(operation.Name)
.Append("', N'")
.Append(operation.NewName)
.Append("'");
}
}
public override IReadOnlyList <MigrationCommand> Generate(IReadOnlyList <MigrationOperation> operations, IModel model = null)
{
Check.NotNull(operations, nameof(operations));
var builder = new MigrationCommandListBuilder(_commandBuilderFactory);
foreach (var operation in operations)
{
Generate(operation, model, builder);
builder
.EndCommand();
}
var list = builder.GetCommandList();
return(list);
}
protected override void Generate(
RenameIndexOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
if (operation.NewName != null)
{
builder
.Append("ALTER INDEX ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name))
.Append(" RENAME TO ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.NewName));
}
builder.EndCommand();
}
/// <summary>
/// Builds commands for the given <see cref="InsertDataOperation" /> by making calls on the given
/// <see cref="MigrationCommandListBuilder" />, and then terminates the final command.
/// </summary>
/// <param name="operation"> The operation. </param>
/// <param name="model"> The target model which may be <c>null</c> if the operations exist without a model. </param>
/// <param name="builder"> The command builder to use to build the commands. </param>
/// <param name="terminate"> Indicates whether or not to terminate the command after generating SQL for the operation. </param>
protected override void Generate(
InsertDataOperation operation,
IModel model,
MigrationCommandListBuilder builder,
bool terminate = true)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var sqlBuilder = new StringBuilder();
builder.Append(sqlBuilder.ToString());
if (terminate)
{
builder.EndCommand();
}
}
protected virtual void Generate(
[NotNull] SqlServerDropDatabaseOperation operation,
[CanBeNull] IModel model,
[NotNull] MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder
.EndCommand()
.Append("IF SERVERPROPERTY('EngineEdition') <> 5 EXEC(N'ALTER DATABASE ")
.Append(SqlGenerationHelper.DelimitIdentifier(operation.Name))
.Append(" SET SINGLE_USER WITH ROLLBACK IMMEDIATE')")
.AppendLine(SqlGenerationHelper.StatementTerminator)
.EndCommand(suppressTransaction: true)
.Append("DROP DATABASE ")
.Append(SqlGenerationHelper.DelimitIdentifier(operation.Name));
EndStatement(builder, suppressTransaction: true);
}
protected virtual void Generate(
[NotNull] SqlServerCreateDatabaseOperation operation,
[CanBeNull] IModel model,
[NotNull] MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder
.EndCommand()
.Append("CREATE DATABASE ")
.Append(SqlGenerationHelper.DelimitIdentifier(operation.Name))
.AppendLine(SqlGenerationHelper.StatementTerminator)
.EndCommand(suppressTransaction: true)
.Append("IF SERVERPROPERTY('EngineEdition') <> 5 EXEC(N'ALTER DATABASE ")
.Append(SqlGenerationHelper.DelimitIdentifier(operation.Name))
.Append(" SET READ_COMMITTED_SNAPSHOT ON')");
EndStatement(builder, suppressTransaction: true);
}
/// <summary>
/// Builds commands for the given <see cref="AlterColumnOperation" />
/// by making calls on the given <see cref="MigrationCommandListBuilder" />.
/// </summary>
/// <param name="operation"> The operation. </param>
/// <param name="model"> The target model which may be <c>null</c> if the operations exist without a model. </param>
/// <param name="builder"> The command builder to use to build the commands. </param>
protected override void Generate(
AlterColumnOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table, operation.Schema))
.Append(" MODIFY COLUMN ");
ColumnDefinition(
operation.Schema,
operation.Table,
operation.Name,
operation,
model,
builder);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
builder.EndCommand();
}
protected override void Generate(
RenameColumnOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var qualifiedName = new StringBuilder();
if (operation.Schema != null)
{
qualifiedName
.Append(operation.Schema)
.Append(".");
}
qualifiedName
.Append(operation.Table)
.Append(".")
.Append(operation.Name);
Rename(qualifiedName.ToString(), operation.NewName, "COLUMN", builder);
builder.EndCommand();
}
protected override void Generate(
AlterColumnOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
var property = FindProperty(model, operation.Schema, operation.Table, operation.Name);
if (operation.ComputedColumnSql != null)
{
var dropColumnOperation = new DropColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name
};
var addColumnOperation = new AddColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name,
ClrType = operation.ClrType,
ColumnType = operation.ColumnType,
IsUnicode = operation.IsUnicode,
MaxLength = operation.MaxLength,
IsRowVersion = operation.IsRowVersion,
IsNullable = operation.IsNullable,
DefaultValue = operation.DefaultValue,
DefaultValueSql = operation.DefaultValueSql,
ComputedColumnSql = operation.ComputedColumnSql,
IsFixedLength = operation.IsFixedLength
};
addColumnOperation.AddAnnotations(operation.GetAnnotations());
Generate(dropColumnOperation, model, builder);
Generate(addColumnOperation, model, builder);
return;
}
var valueGenerationStrategy = operation[
OracleAnnotationNames.ValueGenerationStrategy] as OracleValueGenerationStrategy?;
var identity = valueGenerationStrategy == OracleValueGenerationStrategy.IdentityColumn;
if (IsOldColumnSupported(model))
{
var oldValueGenerationStrategy = operation.OldColumn[
OracleAnnotationNames.ValueGenerationStrategy] as OracleValueGenerationStrategy?;
var oldIdentity = oldValueGenerationStrategy == OracleValueGenerationStrategy.IdentityColumn;
if (oldIdentity &&
!identity)
{
DropIdentity(operation, builder);
}
if (operation.OldColumn.DefaultValue != null ||
operation.OldColumn.DefaultValueSql != null &&
(operation.DefaultValue == null ||
operation.DefaultValueSql == null))
{
DropDefaultConstraint(operation.Schema, operation.Table, operation.Name, builder);
}
}
else
{
if (!identity)
{
DropIdentity(operation, builder);
}
if (operation.DefaultValue == null &&
operation.DefaultValueSql == null)
{
DropDefaultConstraint(operation.Schema, operation.Table, operation.Name, builder);
}
}
builder
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table, operation.Schema))
.Append(" MODIFY ");
ColumnDefinition(
operation.Schema,
operation.Table,
operation.Name,
operation.ClrType,
operation.ColumnType,
operation.IsUnicode,
operation.MaxLength,
operation.IsFixedLength,
operation.IsRowVersion,
operation.IsNullable,
operation.DefaultValue,
operation.DefaultValueSql,
operation.ComputedColumnSql,
identity,
operation,
model,
builder);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
builder.EndCommand();
}
/// <summary>
/// Builds commands for the given <see cref="AlterColumnOperation" />
/// by making calls on the given <see cref="MigrationCommandListBuilder" />.
/// </summary>
/// <param name="operation"> The operation. </param>
/// <param name="model"> The target model which may be <c>null</c> if the operations exist without a model. </param>
/// <param name="builder"> The command builder to use to build the commands. </param>
protected override void Generate(
AlterColumnOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
IEnumerable <IIndex> indexesToRebuild = null;
var property = FindProperty(model, operation.Schema, operation.Table, operation.Name);
if (operation.ComputedColumnSql != null)
{
var dropColumnOperation = new DropColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name
};
if (property != null)
{
dropColumnOperation.AddAnnotations(_migrationsAnnotations.ForRemove(property));
}
var addColumnOperation = new AddColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name,
ClrType = operation.ClrType,
ColumnType = operation.ColumnType,
IsUnicode = operation.IsUnicode,
MaxLength = operation.MaxLength,
IsRowVersion = operation.IsRowVersion,
IsNullable = operation.IsNullable,
DefaultValue = operation.DefaultValue,
DefaultValueSql = operation.DefaultValueSql,
ComputedColumnSql = operation.ComputedColumnSql,
IsFixedLength = operation.IsFixedLength
};
addColumnOperation.AddAnnotations(operation.GetAnnotations());
// TODO: Use a column rebuild instead
indexesToRebuild = GetIndexesToRebuild(property, operation)
.ToList();
DropIndexes(indexesToRebuild, builder);
Generate(dropColumnOperation, model, builder, terminate: false);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
Generate(addColumnOperation, model, builder, terminate: false);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
CreateIndexes(indexesToRebuild, builder);
builder.EndCommand();
return;
}
var narrowed = false;
if (IsOldColumnSupported(model))
{
if (IsIdentity(operation) != IsIdentity(operation.OldColumn))
{
throw new InvalidOperationException(JetStrings.AlterIdentityColumn);
}
var type = operation.ColumnType
?? GetColumnType(
operation.Schema,
operation.Table,
operation.Name,
operation,
model);
var oldType = operation.OldColumn.ColumnType
?? GetColumnType(
operation.Schema,
operation.Table,
operation.Name,
operation.OldColumn,
model);
narrowed = type != oldType || !operation.IsNullable && operation.OldColumn.IsNullable;
}
if (narrowed)
{
indexesToRebuild = GetIndexesToRebuild(property, operation)
.ToList();
DropIndexes(indexesToRebuild, builder);
}
DropDefaultConstraint(operation.Table, operation.Name, builder);
builder
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table))
.Append(" ALTER COLUMN ");
// NB: DefaultValue, DefaultValueSql, and identity are handled elsewhere. Don't copy them here.
var definitionOperation = new AlterColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name,
ClrType = operation.ClrType,
ColumnType = operation.ColumnType,
IsUnicode = operation.IsUnicode,
IsFixedLength = operation.IsFixedLength,
MaxLength = operation.MaxLength,
IsRowVersion = operation.IsRowVersion,
IsNullable = operation.IsNullable,
ComputedColumnSql = operation.ComputedColumnSql,
OldColumn = operation.OldColumn
};
definitionOperation.AddAnnotations(
operation.GetAnnotations()
.Where(
a => a.Name != JetAnnotationNames.ValueGenerationStrategy &&
a.Name != JetAnnotationNames.Identity));
ColumnDefinition(
operation.Schema,
operation.Table,
operation.Name,
definitionOperation,
model,
builder);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
if (operation.DefaultValue != null ||
operation.DefaultValueSql != null)
{
builder
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table))
.Append(" ADD");
DefaultValue(operation.DefaultValue, operation.DefaultValueSql, operation.ColumnType, builder);
builder
.Append(" FOR ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name))
.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
}
// TODO: Implement comment/description support. (ADOX/DAO)
/*
* if (operation.OldColumn.Comment != operation.Comment)
* {
* var dropDescription = operation.OldColumn.Comment != null;
* if (dropDescription)
* {
* DropDescription(
* builder,
* operation.Schema,
* operation.Table,
* operation.Name);
* }
*
* if (operation.Comment != null)
* {
* AddDescription(
* builder, operation.Comment,
* operation.Schema,
* operation.Table,
* operation.Name,
* omitSchemaVariable: dropDescription);
* }
* }
*/
if (narrowed)
{
CreateIndexes(indexesToRebuild, builder);
}
builder.EndCommand();
}
protected override void Generate(
AlterColumnOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
IEnumerable <IIndex> indexesToRebuild = null;
var property = FindProperty(model, operation.Schema, operation.Table, operation.Name);
if (operation.ComputedColumnSql != null)
{
var dropColumnOperation = new DropColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name
};
if (property != null)
{
dropColumnOperation.AddAnnotations(_migrationsAnnotations.ForRemove(property));
}
var addColumnOperation = new AddColumnOperation
{
Schema = operation.Schema,
Table = operation.Table,
Name = operation.Name,
ClrType = operation.ClrType,
ColumnType = operation.ColumnType,
IsUnicode = operation.IsUnicode,
MaxLength = operation.MaxLength,
IsRowVersion = operation.IsRowVersion,
IsNullable = operation.IsNullable,
DefaultValue = operation.DefaultValue,
DefaultValueSql = operation.DefaultValueSql,
ComputedColumnSql = operation.ComputedColumnSql
};
addColumnOperation.AddAnnotations(operation.GetAnnotations());
// TODO: Use a column rebuild instead
indexesToRebuild = GetIndexesToRebuild(property, operation).ToList();
DropIndexes(indexesToRebuild, builder);
Generate(dropColumnOperation, model, builder, terminate: false);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
Generate(addColumnOperation, model, builder, terminate: false);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
CreateIndexes(indexesToRebuild, builder);
builder.EndCommand();
return;
}
var narrowed = false;
if (IsOldColumnSupported(model))
{
var valueGenerationStrategy = operation[
OracleAnnotationNames.ValueGenerationStrategy] as OracleValueGenerationStrategy?;
var identity = valueGenerationStrategy == OracleValueGenerationStrategy.IdentityColumn;
var oldValueGenerationStrategy = operation.OldColumn[
OracleAnnotationNames.ValueGenerationStrategy] as OracleValueGenerationStrategy?;
var oldIdentity = oldValueGenerationStrategy == OracleValueGenerationStrategy.IdentityColumn;
if (identity != oldIdentity)
{
throw new InvalidOperationException(OracleStrings.AlterIdentityColumn);
}
var type = operation.ColumnType
?? GetColumnType(
operation.Schema,
operation.Table,
operation.Name,
operation.ClrType,
operation.IsUnicode,
operation.MaxLength,
operation.IsRowVersion,
model);
var oldType = operation.OldColumn.ColumnType
?? GetColumnType(
operation.Schema,
operation.Table,
operation.Name,
operation.OldColumn.ClrType,
operation.OldColumn.IsUnicode,
operation.OldColumn.MaxLength,
operation.OldColumn.IsRowVersion,
model);
narrowed = type != oldType || !operation.IsNullable && operation.OldColumn.IsNullable;
}
if (narrowed)
{
indexesToRebuild = GetIndexesToRebuild(property, operation).ToList();
DropIndexes(indexesToRebuild, builder);
}
DropDefaultConstraint(operation.Schema, operation.Table, operation.Name, builder);
builder
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table, operation.Schema))
.Append(" ALTER COLUMN ");
ColumnDefinition(
operation.Schema,
operation.Table,
operation.Name,
operation.ClrType,
operation.ColumnType,
operation.IsUnicode,
operation.MaxLength,
operation.IsRowVersion,
operation.IsNullable,
/*defaultValue:*/ null,
/*defaultValueSql:*/ null,
operation.ComputedColumnSql,
/*identity:*/ false,
operation,
model,
builder);
builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
if (operation.DefaultValue != null ||
operation.DefaultValueSql != null)
{
builder
.Append("ALTER TABLE ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Table, operation.Schema))
.Append(" ADD");
DefaultValue(operation.DefaultValue, operation.DefaultValueSql, builder);
builder
.Append(" FOR ")
.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name))
.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
}
if (narrowed)
{
CreateIndexes(indexesToRebuild, builder);
}
builder.EndCommand();
}
protected override void Generate(
AlterDatabaseOperation operation,
IModel model,
MigrationCommandListBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder.AppendLine("IF SERVERPROPERTY('IsXTPSupported') = 1 AND SERVERPROPERTY('EngineEdition') <> 5");
using (builder.Indent())
{
builder
.AppendLine("BEGIN")
.AppendLine("IF NOT EXISTS (");
using (builder.Indent())
{
builder
.Append("SELECT 1 FROM [sys].[filegroups] [FG] ")
.Append("JOIN [sys].[database_files] [F] ON [FG].[data_space_id] = [F].[data_space_id] ")
.AppendLine("WHERE [FG].[type] = N'FX' AND [F].[type] = 2)");
}
using (builder.Indent())
{
builder
.AppendLine("BEGIN")
.AppendLine("DECLARE @db_name NVARCHAR(MAX) = DB_NAME();")
.AppendLine("DECLARE @fg_name NVARCHAR(MAX);")
.AppendLine("SELECT TOP(1) @fg_name = [name] FROM [sys].[filegroups] WHERE [type] = N'FX';")
.AppendLine()
.AppendLine("IF @fg_name IS NULL");
using (builder.Indent())
{
builder
.AppendLine("BEGIN")
.AppendLine("SET @fg_name = @db_name + N'_MODFG';")
.AppendLine("EXEC(N'ALTER DATABASE CURRENT ADD FILEGROUP [' + @fg_name + '] CONTAINS MEMORY_OPTIMIZED_DATA;');")
.AppendLine("END");
}
builder
.AppendLine()
.AppendLine("DECLARE @path NVARCHAR(MAX);")
.Append("SELECT TOP(1) @path = [physical_name] FROM [sys].[database_files] ")
.AppendLine("WHERE charindex('\\', [physical_name]) > 0 ORDER BY [file_id];")
.AppendLine("IF (@path IS NULL)")
.IncrementIndent().AppendLine("SET @path = '\\' + @db_name;").DecrementIndent()
.AppendLine()
.AppendLine("DECLARE @filename NVARCHAR(MAX) = right(@path, charindex('\\', reverse(@path)) - 1);")
.AppendLine("SET @filename = REPLACE(left(@filename, len(@filename) - charindex('.', reverse(@filename))), '''', '''''') + N'_MOD';")
.AppendLine("DECLARE @new_path NVARCHAR(MAX) = REPLACE(CAST(SERVERPROPERTY('InstanceDefaultDataPath') AS NVARCHAR(MAX)), '''', '''''') + @filename;")
.AppendLine()
.AppendLine("EXEC(N'");
using (builder.Indent())
{
builder
.AppendLine("ALTER DATABASE CURRENT")
.AppendLine("ADD FILE (NAME=''' + @filename + ''', filename=''' + @new_path + ''')")
.AppendLine("TO FILEGROUP [' + @fg_name + '];')");
}
builder.AppendLine("END");
}
builder.AppendLine("END");
}
builder.AppendLine()
.AppendLine("IF SERVERPROPERTY('IsXTPSupported') = 1")
.AppendLine("EXEC(N'");
using (builder.Indent())
{
builder
.AppendLine("ALTER DATABASE CURRENT")
.AppendLine("SET MEMORY_OPTIMIZED_ELEVATE_TO_SNAPSHOT ON;')");
}
builder.EndCommand(suppressTransaction: true);
}