public static StringBuilder AppendWhereClause(this StringBuilder sb, IDataDescriptor descriptor, ISqlDialect d,
List <string> keys)
{
if (keys != null)
{
if (!d.BeforeWhere(descriptor, sb, keys))
{
return(sb);
}
for (var i = 0; i < keys.Count; i++)
{
sb.Append(i == 0 ? " WHERE " : " AND ");
var key = keys[i];
sb.AppendName(d, key).Append(" = ").AppendParameter(d, key);
}
if (keys.Count > 0)
{
d.AfterWhere(descriptor, sb, keys);
}
}
return(sb);
}
public static string Update(this ISqlDialect d, IDataDescriptor descriptor, string table, string schema,
List <string> columns, List <string> keys, List <string> setParameters, List <string> whereParameters,
string setSuffix = SetSuffix)
{
Debug.Assert(columns != null);
Debug.Assert(columns.Count == setParameters?.Count && columns.Count >= whereParameters?.Count);
return(Pooling.StringBuilderPool.Scoped(sb =>
{
if (!d.BeforeUpdate(descriptor, sb))
{
return;
}
sb.Append("UPDATE ");
sb.AppendTable(d, table, schema).Append(" SET ");
if (!d.BeforeUpdateColumns(descriptor, sb, columns))
{
return;
}
for (var i = 0; i < columns.Count; i++)
{
var column = columns[i];
sb.AppendName(d, column).Append(" = ");
sb.AppendParameter(d, setParameters[i] + setSuffix);
if (i < columns.Count - 1)
{
sb.Append(", ");
}
}
if (whereParameters.Count > 0)
{
if (!d.BeforeWhere(descriptor, sb, keys, whereParameters))
{
return;
}
sb.AppendWhereClause(d, keys, whereParameters);
d.AfterWhere(descriptor, sb, keys);
}
}));
}
public static string Update(this ISqlDialect d, IDataDescriptor descriptor, string table, string schema,
List <PropertyToColumn> columns, List <string> keys, string setSuffix = SetSuffix)
{
return(StringBuilderPool.Scoped(sb =>
{
if (!d.BeforeUpdate(descriptor, sb))
{
return;
}
sb.Append("UPDATE ");
sb.AppendTable(d, table, schema).Append(" SET ");
if (!d.BeforeUpdateColumns(descriptor, sb, columns.Select(x => x.ColumnName).ToList()))
{
return;
}
for (var i = 0; i < columns.Count; i++)
{
var column = columns[i];
sb.AppendName(d, column.ColumnName).Append(" = ")
.AppendParameter(d, column.ColumnName)
.Append(setSuffix);
if (i < columns.Count - 1)
{
sb.Append(", ");
}
}
if (!d.BeforeWhere(descriptor, sb, keys))
{
return;
}
sb.AppendWhereClause(d, keys);
d.AfterWhere(descriptor, sb, keys);
}));
}
public static string Delete(this ISqlDialect d, IDataDescriptor descriptor, string table, string schema,
List <string> keys, List <string> parameters)
{
return(Pooling.StringBuilderPool.Scoped(sb =>
{
if (!d.BeforeDelete(descriptor, sb))
{
return;
}
sb.Append("DELETE FROM ");
sb.AppendTable(d, table, schema);
if (!d.BeforeWhere(descriptor, sb, keys, parameters))
{
return;
}
sb.AppendWhereClause(descriptor, d, keys, parameters);
}));
}
