/// <summary>
///
/// </summary>
/// <param name="foreignKey"></param>
/// <param name="foreignKeyMetadata"></param>
/// <returns></returns>
private ColumnInfo GetReferenceColumn(ForeignKeyInfo foreignKey, ForeignKeyMetadata foreignKeyMetadata)
{
var referenceColumn = foreignKeyMetadata.ReferencedColumn;
if (string.IsNullOrEmpty(referenceColumn))
{
return(foreignKey?.ReferenceTable?.PrimaryKey?.PrimaryColumn);
}
return(foreignKey.ReferenceTable.GetColumn(referenceColumn));
}
/// <summary>
///
/// </summary>
/// <param name="table"></param>
/// <param name="foreignKeyMetadata"></param>
/// <returns></returns>
private ForeignKeyInfo GetForeignKey(MetadataTableInfo table, ForeignKeyMetadata foreignKeyMetadata)
{
var foreignKey = new ForeignKeyInfo();
foreignKey.Name = foreignKeyMetadata.Name;
foreignKey.Column = table.GetColumn(foreignKeyMetadata.Column.Name);
foreignKey.Table = table;
foreignKey.ReferenceTable = GetReferenceTable(foreignKeyMetadata);
foreignKey.ReferenceColumn = GetReferenceColumn(foreignKey, foreignKeyMetadata);
MigrateManager.CorrectName(foreignKey);
return(foreignKey);
}
/// <summary>
///
/// </summary>
/// <param name="foreignKeyMetadata"></param>
/// <returns></returns>
private TableInfo GetReferenceTable(ForeignKeyMetadata foreignKeyMetadata)
{
var referencedTable = foreignKeyMetadata.ReferencedTable;
var tableInfo = _metadataTableInfos.FirstOrDefault(f => f.TableMetadata.TableType == referencedTable);
if (tableInfo != null)
{
return(tableInfo);
}
var tableMetadata = MetadataManager.GetTableMetadata(referencedTable);
return(GetTableInfo(tableMetadata));
}
/// <summary>
///
/// </summary>
/// <param name="columnMetadata"></param>
/// <returns></returns>
protected virtual ForeignKeyMetadata GetForeignKey(ColumnMetadata columnMetadata)
{
var attr = columnMetadata.Property.GetCustomAttribute <ForeignKeyAttribute>();
if (attr == null)
{
return(null);
}
var foreignKey = new ForeignKeyMetadata();
foreignKey.Column = columnMetadata;
foreignKey.Name = attr.Name;
foreignKey.Table = columnMetadata.Table;
foreignKey.ReferencedTable = attr.ReferencedTable ?? columnMetadata.Property.PropertyType;
foreignKey.ReferencedColumn = attr.ReferenceColumn ?? GetTableMetadata(foreignKey.ReferencedTable)?.PrimaryKey?.PrimaryColumn?.Name;
return(foreignKey);
}
