internal void AddWhereClause <T>(IList <Expression <Func <T, bool> > > whereClauses, StringBuilder sql, AutoNamingDynamicParameters parameters, ref FetchNode rootNode)
{
var whereClauseWriter = new WhereClauseWriter(this.Dialect, this.Configuration);
var result = whereClauseWriter.GenerateSql(whereClauses, rootNode, parameters);
if (result.Sql.Length > 0)
{
sql.Append(result.Sql);
}
rootNode = result.FetchTree;
}
private void AppendPredicates <T>(IEnumerable <Expression <Func <T, bool> > > predicates, StringBuilder sql, DynamicParameters parameters)
{
var predicateArray = predicates as Expression <Func <T, bool> >[] ?? predicates.ToArray();
if (!predicateArray.Any())
{
return;
}
var whereClauseWriter = new WhereClauseWriter(this.Dialect, this.Configuration);
var whereResult = whereClauseWriter.GenerateSql(predicateArray, null);
if (whereResult.FetchTree != null && whereResult.FetchTree.Children.Any())
{
throw new NotImplementedException("Dashing does not currently support where clause across tables in a delete");
}
sql.Append(whereResult.Sql);
parameters.AddDynamicParams(whereResult.Parameters);
}
public SqlWriterResult GenerateBulkSql <T>(Action <T> updateAction, IEnumerable <Expression <Func <T, bool> > > predicates) where T : class, new()
{
var sql = new StringBuilder();
var parameters = new DynamicParameters();
var map = this.Configuration.GetMap <T>();
// run the update
var entity = new T();
updateAction(entity);
// find the set properties
var setLogger = (ISetLogger)entity;
var setProps = setLogger.GetSetProperties();
if (!setProps.Any())
{
return(new SqlWriterResult(string.Empty, parameters));
}
sql.Append("update ");
this.Dialect.AppendQuotedTableName(sql, map);
sql.Append(" set ");
foreach (var updatedProp in setProps)
{
var column = map.Columns[updatedProp];
this.Dialect.AppendQuotedName(sql, column.DbName);
var paramName = "@" + updatedProp;
var propertyValue = map.GetColumnValue(entity, column);
if (propertyValue == null)
{
parameters.Add(paramName, null);
}
else
{
parameters.Add(paramName, this.GetValueOrPrimaryKey(column, propertyValue));
}
sql.Append(" = ");
sql.Append(paramName);
sql.Append(", ");
}
sql.Remove(sql.Length - 2, 2);
if (predicates != null && predicates.Any())
{
var whereClauseWriter = new WhereClauseWriter(this.Dialect, this.Configuration);
var whereResult = whereClauseWriter.GenerateSql(predicates, null);
if (whereResult.FetchTree != null && whereResult.FetchTree.Children.Any())
{
throw new NotImplementedException("Dashing does not currently support where clause across tables in an update");
}
parameters.AddDynamicParams(whereResult.Parameters);
sql.Append(whereResult.Sql);
}
return(new SqlWriterResult(sql.ToString(), parameters));
}