public override SqlStatementKind BuildSql(StringBuilder b, SqlQueryContext context)
{
SqlStatementKind kind = Target.BuildSql(b, context);
SqlStatementKind resultKind;
switch (kind)
{
case SqlStatementKind.Select:
b.Append(" WHERE ");
resultKind = SqlStatementKind.SelectWhere;
break;
case SqlStatementKind.SelectGroupBy:
b.Append(" HAVING ");
resultKind = SqlStatementKind.SelectGroupByHaving;
break;
default:
WrapSqlIntoNestedStatement(b, context);
b.Append(" WHERE ");
resultKind = SqlStatementKind.SelectWhere;
break;
}
for (int i = 0; i < Conditions.Count; i++)
{
if (i > 0)
{
b.Append(" AND ");
}
BuildSqlForCondition(b, context, Conditions[i]);
}
b.AppendLine();
return(resultKind);
}
public override SqlStatementKind BuildSql(StringBuilder b, SqlQueryContext context)
{
SqlStatementKind kind = Target.BuildSql(b, context);
if (kind == SqlStatementKind.SelectLimit)
{
WrapSqlIntoNestedStatement(b, context);
}
b.Append(" LIMIT " + Length);
b.AppendLine(" OFFSET " + Start);
return(SqlStatementKind.SelectLimit);
}
public override SqlStatementKind BuildSql(StringBuilder b, SqlQueryContext context)
{
SqlStatementKind kind = Target.BuildSql(b, context);
if (kind == SqlStatementKind.SelectOrderBy)
{
WrapSqlIntoNestedStatement(b, context);
}
b.Append(" ORDER BY ");
for (int i = 0; i < arguments.Count; i++)
{
StringWriter w = new StringWriter();
ExpressionSqlWriter writer = new ExpressionSqlWriter(w, context, arguments[i].Argument.Parameters[0]);
writer.Write(arguments[i].Argument.Body);
if (i == 0)
{
b.Append(w.ToString());
}
else
{
b.Append(", " + w.ToString());
}
if (arguments[i].Descending)
{
b.Append(" DESC");
}
else
{
b.Append(" ASC");
}
}
return(SqlStatementKind.SelectOrderBy);
}
public IRelationalCommand Build <TEntity>(SqlStatementKind statementKind, IEntityModel model, TEntity entity, IEntityMapping entityMapping)
{
switch (statementKind)
{
case SqlStatementKind.CreateTable:
ISqlStatementBuilder <CreateTableStatement> statementBuilder = new CreateTableStatementBuilder(model, entityMapping);
ISqlStatement statement = statementBuilder.BuildStatement();
return(new RelationalCommand(statement.GetText(), null));
case SqlStatementKind.Insert:
ISqlStatementBuilder <InsertStatement> insertStatementBuilder = new InsertStatementBuilder(entity, entityMapping);
InsertStatement insertStatement = insertStatementBuilder.BuildStatement();
return(new RelationalCommand(insertStatement.GetText(), insertStatement.Parameters));
case SqlStatementKind.Update:
ISqlStatementBuilder <UpdateStatement> updateStatementBuilder = new UpdateStatementBuilder(entity, entityMapping);
UpdateStatement updateStatement = updateStatementBuilder.BuildStatement();
return(new RelationalCommand(updateStatement.GetText(), updateStatement.Parameters));
case SqlStatementKind.Delete:
ISqlStatementBuilder <DeleteStatement> deleteStatementBuilder = new DeleteStatementBuilder(entity, entityMapping);
DeleteStatement deleteStatement = deleteStatementBuilder.BuildStatement();
return(new RelationalCommand(deleteStatement.GetText(), deleteStatement.Parameters));
default:
throw new NotImplementedException();
}
}
public int ExecuteNonQuery <TEntity>(SqlStatementKind statementKind, IEntityModel model, TEntity entity, IEntityMapping entityMapping) where TEntity : class
{
var command = _commandBuilder.Build(statementKind, model, entity, entityMapping);
return(Connection.ExecuteNonQuery(command.Sql, command.Parameters.ToDictionary()));
}
