/// <summary>
/// Builds the command text to update a database record for the specified <see cref="IObjectInfo"/>.
/// </summary>
/// <param name="objectInfo">The object information.</param>
/// <returns>
/// The created command text.
/// </returns>
protected virtual string BuildUpdateCommandText(IObjectInfo objectInfo)
{
if (objectInfo == null)
{
throw new ArgumentNullException("objectInfo");
}
var builder = new UpdateSqlBuilder(this.SqlCharacters)
.Table(objectInfo);
for (int i = 0; i < objectInfo.TableInfo.Columns.Count; i++)
{
var columnInfo = objectInfo.TableInfo.Columns[i];
if (columnInfo.AllowUpdate)
{
builder.SetColumnValue(columnInfo.ColumnName, null);
}
}
var updateSqlQuery = builder
.Where(objectInfo.TableInfo.IdentifierColumn.ColumnName).IsEqualTo(0)
.ToSqlQuery();
return(updateSqlQuery.CommandText);
}
/// <summary>
/// Creates an SqlQuery to perform an update based upon the values in the object delta.
/// </summary>
/// <param name="objectDelta">The object delta to create the query for.</param>
/// <returns>
/// The created <see cref="SqlQuery" />.
/// </returns>
public SqlQuery BuildUpdateSqlQuery(ObjectDelta objectDelta)
{
if (objectDelta == null)
{
throw new ArgumentNullException("objectDelta");
}
if (log.IsDebug)
{
log.Debug(LogMessages.SqlDialect_CreatingSqlQuery, "UPDATE");
}
var objectInfo = ObjectInfo.For(objectDelta.ForType);
var builder = new UpdateSqlBuilder(this.SqlCharacters)
.Table(objectInfo);
foreach (var change in objectDelta.Changes)
{
builder.SetColumnValue(change.Key, change.Value);
}
var sqlQuery = builder
.Where(objectInfo.TableInfo.IdentifierColumn.ColumnName).IsEqualTo(objectDelta.Identifier)
.ToSqlQuery();
return(sqlQuery);
}