/// <summary>
/// 将分类规则解析为检索表达式树
/// </summary>
/// <param name="rule"></param>
/// <returns></returns>
public static QueryNode Analyser(RuleEntityOld rule)
{
QueryNode query = null;
List<QueryNode> notQueries = new List<QueryNode>();
// 构建非规则
if (!string.IsNullOrEmpty(rule.TitleRemoveRuleExpression))
{
notQueries.Add(new QueryNode("Title", new ImmideatelyValue(rule.TitleRemoveRuleExpression)));
}
if (!string.IsNullOrEmpty(rule.ContentRemoveRuleExpression))
{
notQueries.Add(new QueryNode("Content", new ImmideatelyValue(rule.ContentRemoveRuleExpression)));
}
QueryNode notQuery = new QueryNode(QueryLogic.MUST_NOT, notQueries.ToArray());
// 构建匹配规则
QueryLogic logic = rule.MatchMode == MatchModeStyle.TitleAndContent ? QueryLogic.MUST : QueryLogic.SHOULD;
if (!string.IsNullOrEmpty(rule.TitleRuleExpression) && !string.IsNullOrEmpty(rule.ContentRuleExpression))
{
query = new QueryNode(
logic,
new QueryNode[]
{
new QueryNode("Title", new Query.Expression.FieldValue.ImmideatelyValue(rule.TitleRuleExpression)),
new QueryNode("Content", new Query.Expression.FieldValue.ImmideatelyValue(rule.ContentRuleExpression))
});
}
else
{
List<QueryNode> querys = new List<QueryNode>();
if (!string.IsNullOrEmpty(rule.TitleRuleExpression))
{
querys.Add(new QueryNode("Title", new ImmideatelyValue(rule.TitleRuleExpression)));
}
if (!string.IsNullOrEmpty(rule.ContentRuleExpression))
{
querys.Add(new QueryNode("Content", new ImmideatelyValue(rule.ContentRuleExpression)));
}
query = new QueryNode(logic, querys.ToArray());
}
// 处理其他查询条件，如时间，如站点
List<QueryNode> otherQuery = new List<QueryNode>();
if (!string.IsNullOrEmpty(rule.SiteIDS))
{
string[] siteIds = null;
try
{
siteIds = rule.SiteIDS.Split(new char[] { ',' }).ToArray();
}
catch (Exception e)
{
Console.WriteLine("站点ID格式有错");
}
if (siteIds != null)
{
otherQuery.Add(
new QueryNode(
"SiteId",
new Collection(siteIds)
));
}
}
// 重新设置分类规则的时间
ReSetRule(rule);
otherQuery.Add(new QueryNode(
"PublishOn",
new Query.Expression.FieldValue.Range(
DateTimeConverter.TimeSpan4Minute(rule.BeginDate),
DateTimeConverter.TimeSpan4Minute(rule.EndDate),
true)));
return new QueryNode(
new List<QueryNode>(otherQuery)
{
query,
notQuery
}.ToArray());
}
public static void ReSetRule(RuleEntityOld rule)
{
if (rule.BeginDate <= RuleConvention.DefaultTime)
{
rule.BeginDate = RuleConvention.DefaultTime;
}
if (rule.EndDate <= RuleConvention.DefaultTime)
{
rule.EndDate = DateTime.Now;
}
}