private static string BuildJoin(IDictionary <string, object> parameters, Join join)
{
var builder = new StringBuilder();
switch (join.JoinOperator)
{
case JoinOperation.FullOuterJoin:
builder.Append("FULL OUTER JOIN ");
break;
case JoinOperation.InnerJoin:
builder.Append("INNER JOIN ");
break;
case JoinOperation.LeftJoin:
builder.Append("LEFT JOIN ");
break;
case JoinOperation.RightJoin:
builder.Append("RIGHT JOIN ");
break;
}
builder.Append(HBDCommon.GetSqlName(join.JoinTable))
.Append(BuildAlias(join))
.Append(" ON (")
.Append(SqlRender.BuildCondition(join.Condition, parameters))
.Append(")");
return(builder.ToString());
}
private string BuildInsert(IDictionary <string, object> parameters, InsertQueryBuilder query)
{
if (query == null)
{
return(null);
}
if (query.Tables.Count == 0)
{
return(null);
}
if (query.Sets.Count == 0)
{
return(null);
}
var builder = new StringBuilder();
var result = BuildInsertSet(parameters, query.Sets);
builder.Append("INSERT INTO ")
.Append(Environment.NewLine)
.Append(BuildTables(parameters, query.Tables))
.Append($"({string.Join(",", result.Select(n => HBDCommon.GetSqlName(n.Key)))})")
.Append(Environment.NewLine)
.Append("VALUES (")
.Append($"{string.Join(",", result.Select(v => v.Value))}")
.Append(")");
return(builder.ToString());
}
private static string BuildField(Field field)
{
if (field is FunctionField)
{
return(BuildFunctionField((FunctionField)field));
}
return(HBDCommon.GetSqlName(field.Name) + BuildAlias(field));
}
private static object BuildUpdateSet(IDictionary <string, object> parameters, KeyValuePair <string, object> set)
{
var builder = new StringBuilder();
var paraName = SqlRender.GetParamertName(parameters, set.Key);
builder.Append(HBDCommon.GetSqlName(set.Key)).Append(" = ").Append(paraName);
parameters.Add(paraName, set.Value);
return(builder.ToString());
}
private static string BuildFunctionField(FunctionField field)
{
var builder = new StringBuilder();
if (field is CustomFunction)
{
var c = (CustomFunction)field;
builder.Append(c.FunctionName.ToUpper())
.Append($"({BuildSqlValueList(c.Parameters)}) ");
return(builder.ToString());
}
if (field is AverageField)
{
builder.Append("AVG");
}
if (field is CountField)
{
builder.Append("COUNT");
}
if (field is LeftField)
{
builder.Append("LEFT");
}
if (field is RightField)
{
builder.Append("RIGHT");
}
if (field is MaxField)
{
builder.Append("MAX");
}
if (field is MinField)
{
builder.Append("MIN");
}
if (field is SumField)
{
builder.Append("SUM");
}
builder.Append("(")
.Append(field.Type == FunctionType.All ? string.Empty : "DISTINCT ")
.Append(HBDCommon.GetSqlName(field.Name))
.Append(") ")
.Append(BuildAlias(field));
return(builder.ToString());
}
private static string BuildAlias(Aliasable alias) => string.IsNullOrWhiteSpace(alias.Alias) ? string.Empty : HBDCommon.GetSqlName(alias.Alias);
private static string BuildOrderBy(IList <OrderByField> orderBy)
=>
string.Join(",",
orderBy.Select(
f =>
HBDCommon.GetSqlName(f.Name) + (f.OrderType == OrderType.Ascending ? string.Empty : " DESC")));