internal void BuildWhereAll(Expression expression)
{
// ToDo: Add support for query more than 1 table
SqlQuery.AppendFormat(numberFormat, "SELECT * FROM " + connectorQuery.Table + " WHERE ", PluralizedEntityName);
Visit(expression);
}
internal void BuildSelect(IReadOnlyList <MemberInfo> members)
{
SqlQuery.Append("SELECT ");
for (var i = 0; i < members.Count; i++)
{
SqlQuery.AppendFormat(numberFormat, connectorQuery.Table + ", ", members[i].GetName());
}
SqlQuery.AppendFormat(numberFormat, "FROM " + connectorQuery.Table, PluralizedEntityName);
SqlQuery.Replace(", FROM", " FROM");
}
internal void BuildWhere(Expression expression, IReadOnlyList <MemberInfo> members)
{
SqlQuery.Append("SELECT ");
for (var i = 0; i < members.Count; i++)
{
SqlQuery.AppendFormat(numberFormat, connectorQuery.Table + ", ", members[i].GetName());
}
SqlQuery.AppendFormat(numberFormat, "FROM " + connectorQuery.Table + " WHERE ", PluralizedEntityName);
// Fix query
SqlQuery.Replace(", FROM", " FROM");
Visit(expression);
}
internal void BuildDelete(T entity, PropertyInfo[] primaryKeys)
{
SqlQuery.AppendFormat(numberFormat, connectorQuery.DeleteQuery, PluralizedEntityName, PluralizedEntityName[0]);
var mainPrimaryKeyName = primaryKeys[0].GetName();
// Append first primary key condition.
SqlQuery.AppendFormat(numberFormat, connectorQuery.Equal, mainPrimaryKeyName);
SqlParameters.Add($"{mainPrimaryKeyName}", primaryKeys[0].GetGetter <T>().GetValue(entity));
for (var i = 1; i < primaryKeys.Length; i++)
{
var primaryKeyName = primaryKeys[i].GetName();
SqlQuery.AppendFormat(numberFormat, connectorQuery.AndEqual, primaryKeyName);
SqlParameters.Add($"{primaryKeyName}", primaryKeys[i].GetGetter <T>().GetValue(entity));
}
}
internal void BuildUpdate(MethodCallExpression[] expression, Expression condition)
{
SqlQuery.AppendFormat(numberFormat, connectorQuery.UpdateQuery, Pluralize <T>());
for (var i = 0; i < expression.Length; i++)
{
var memberName = (expression[i].Arguments[0] as MemberExpression).Member.GetName();
MemberExpression memberExpression = null;
object memberValue = null;
if (expression[i].Arguments[1].NodeType == ExpressionType.MemberAccess)
{
memberExpression = expression[i].Arguments[1] as MemberExpression;
}
else if (expression[i].Arguments[1].NodeType == ExpressionType.Convert)
{
memberExpression = (expression[i].Arguments[1] as UnaryExpression).Operand as MemberExpression;
}
else if (expression[i].Arguments[1].NodeType == ExpressionType.Constant)
{
memberValue = (expression[i].Arguments[1] as ConstantExpression).Value;
}
memberValue = memberValue ?? GetExpressionValue(memberExpression);
SqlQuery.AppendFormat(numberFormat, connectorQuery.Equal + ", ", memberName);
SqlParameters.Add($"@{memberName}", memberValue);
}
if (condition != null)
{
SqlQuery.Append("WHERE ");
Visit(condition);
SqlQuery.Replace(", WHERE", " WHERE");
SqlQuery.Replace(", FROM", " FROM");
}
else
{
SqlQuery.Remove(SqlQuery.Length - 2, 2);
}
}
internal void BuildUpdate(T entity, PropertyInfo[] properties, PropertyInfo[] primaryKeys)
{
SqlQuery.AppendFormat(numberFormat, connectorQuery.UpdateQuery, PluralizedEntityName, PluralizedEntityName[0]);
for (var i = 0; i < properties.Length; i++)
{
// Don't update primary keys.
if (properties[i].HasAttribute <PrimaryKeyAttribute>())
{
continue;
}
var name = properties[i].GetName();
var value = properties[i].GetGetter <T>().GetValue(entity);
SqlQuery.AppendFormat(numberFormat, connectorQuery.Equal + ", ", name);
SqlParameters.Add($"@{name}", value is bool?Convert.ToByte(value) : value);
}
SqlQuery.AppendFormat(numberFormat, connectorQuery.UpdateQueryEnd, PluralizedEntityName, PluralizedEntityName[0]);
var mainPrimaryKeyName = primaryKeys[0].GetName();
// Append first primary key condition.
SqlQuery.AppendFormat(numberFormat, connectorQuery.Equal, mainPrimaryKeyName);
SqlParameters.Add($"@{mainPrimaryKeyName}", primaryKeys[0].GetGetter <T>().GetValue(entity));
for (var i = 1; i < primaryKeys.Length; i++)
{
var primaryKeyName = primaryKeys[i].GetName();
SqlQuery.AppendFormat(numberFormat, connectorQuery.AndEqual, primaryKeyName);
SqlParameters.Add($"{primaryKeyName}", primaryKeys[i].GetGetter <T>().GetValue(entity));
}
SqlQuery.Replace(", WHERE", " WHERE");
SqlQuery.Replace(", FROM", " FROM");
}
internal void BuildDelete(Expression expression)
{
SqlQuery.AppendFormat(numberFormat, connectorQuery.DeleteQuery, PluralizedEntityName);
Visit(expression);
}
internal void BuildWhereCount(Expression expression)
{
SqlQuery.AppendFormat(numberFormat, "SELECT COUNT(*) FROM " + connectorQuery.Table + " WHERE ", PluralizedEntityName);
Visit(expression);
}
internal void BuildSelectCount()
{
SqlQuery.AppendFormat(numberFormat, "SELECT COUNT(*) FROM " + connectorQuery.Table, PluralizedEntityName);
}
