public Column(string name, ColumnType type)
{
if (type == null)
throw new ArgumentNullException("type");
Name = name;
ColumnType = type;
}
public Column(string name, ColumnType type, ColumnProperty property = ColumnProperty.None, object defaultValue = null)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("name");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
Name = name;
ColumnType = type;
ColumnProperty = property;
DefaultValue = defaultValue;
}
protected override string GetSqlChangeColumnType(SchemaQualifiedObjectName table, string column, ColumnType columnType)
{
string columnTypeSql = typeMap.Get(columnType);
return FormatSql("ALTER TABLE {0:NAME} MODIFY {1:NAME} {2}", table, column, columnTypeSql);
}
public string Get(ColumnType columnType)
{
return Get(columnType.DataType, columnType.Length, columnType.Scale);
}
private ColumnType GetColumnType()
{
var columnType = new ColumnType(ColumnType);
columnType.Length = ColumnLength ?? Defaults.ColumnSize;
if (ColumnScale != null)
{
columnType.Scale = ColumnScale;
}
return columnType;
}
protected override string GetSqlChangeColumnType(SchemaQualifiedObjectName table, string column, ColumnType columnType)
{
string sqlColumnType = typeMap.Get(columnType);
return FormatSql("ALTER TABLE {0:NAME} ALTER COLUMN {1:NAME} TYPE {2}", table.Name, column, sqlColumnType);
}
protected virtual string GetSqlChangeColumnType(SchemaQualifiedObjectName table, string column, ColumnType columnType)
{
string columnTypeSql = typeMap.Get(columnType);
return FormatSql("ALTER TABLE {0:NAME} ALTER COLUMN {1:NAME} {2}", table, column, columnTypeSql);
}
public virtual void ChangeColumn(SchemaQualifiedObjectName table, string column, ColumnType columnType, bool notNull)
{
string sqlChangeColumn = GetSqlChangeColumnType(table, column, columnType);
string sqlChangeNotNullConstraint = GetSqlChangeNotNullConstraint(
table, column, notNull, ref sqlChangeColumn);
if (!string.IsNullOrWhiteSpace(sqlChangeColumn))
{
ExecuteNonQuery(sqlChangeColumn);
}
if (!string.IsNullOrWhiteSpace(sqlChangeNotNullConstraint))
{
ExecuteNonQuery(sqlChangeNotNullConstraint);
}
}
public Column(string name, ColumnType type, ColumnProperty property, object defaultValue)
: this(name, type)
{
ColumnProperty = property;
DefaultValue = defaultValue;
}
public Column(string name, ColumnType type, object defaultValue)
: this(name, type)
{
DefaultValue = defaultValue;
}
public Column(string name, ColumnType type, ColumnProperty property)
: this(name, type)
{
ColumnProperty = property;
}
public void SetColumnType(ColumnType type)
{
if (type == null)
throw new ArgumentNullException("type");
ColumnType = type;
}
protected Column()
{
ColumnType = new ColumnType(default(DbType));
}
/// <summary>
/// Get the name of the database type associated with the given
/// </summary>
/// <param name="type">The DbType</param>
/// <returns>The database type name used by ddl.</returns>
public virtual string GetTypeName(ColumnType type)
{
return typeNames.Get(type);
}
