/// <summary>
/// create express like: ((a=1) or (a=2) or (b=3))
/// </summary>
public static IContentQuery <TextContent> WhereOrs(this IContentQuery <TextContent> textContents, Dictionary <string, object> args)
{
var textContent = textContents.FirstOrDefault();
Repository repository = textContent == null ? Repository.Current : new Repository(textContent.Repository);
var folder = new TextFolder(repository, textContent.FolderName);
folder = folder.AsActual();
var query = folder.CreateQuery();
foreach (var arg in args)
{
query = query.Or(new WhereContainsExpression(null, arg.Key, arg.Value));
}
return(textContents.Where((IWhereExpression)query.Expression));
}
public static IContentQuery <TextContent> WhereCategory(this IContentQuery <TextContent> textContents, string categoryFolderName, string[] categoryUUIDs)
{
var textContent = textContents.FirstOrDefault();
Repository repository = null;
if (textContent != null)
{
repository = new Repository(textContent.Repository);
}
else
{
repository = Repository.Current;
}
var categoryFolder = new TextFolder(repository, categoryFolderName);
var categoryQuery = categoryFolder.CreateQuery().WhereIn(SystemFieldNames.UUID, categoryUUIDs);
return(textContents.WhereCategory(categoryQuery));
}
private static object GetData(DataRuleSetting dataRuleSetting, IContentQuery <TextContent> contentQuery)
{
if (dataRuleSetting.CachingDuration > 0)
{
var policy = new CacheItemPolicy()
{
SlidingExpiration = TimeSpan.FromSeconds(dataRuleSetting.CachingDuration)
};
switch (dataRuleSetting.TakeOperation)
{
case TakeOperation.First:
var lazyFirst = contentQuery.LazyFirstOrDefault();
return(GetCacheData(dataRuleSetting.TakeOperation, contentQuery, policy, () => lazyFirst.Value));
case TakeOperation.Count:
var lazyCount = contentQuery.LazyCount();
return(GetCacheData(dataRuleSetting.TakeOperation, contentQuery, policy, () => lazyCount.Value));
case TakeOperation.List:
default:
return(GetCacheData(dataRuleSetting.TakeOperation, contentQuery, policy, () => contentQuery.ToArray()));
}
}
else
{
switch (dataRuleSetting.TakeOperation)
{
case TakeOperation.First:
return(contentQuery.FirstOrDefault());
case TakeOperation.Count:
return(contentQuery.Count());
case TakeOperation.List:
default:
return(contentQuery.ToArray());
}
}
}
private static object GetData(DataRuleSetting dataRuleSetting, IContentQuery<TextContent> contentQuery)
{
if (dataRuleSetting.CachingDuration > 0)
{
var policy = new CacheItemPolicy() { SlidingExpiration = TimeSpan.FromSeconds(dataRuleSetting.CachingDuration) };
switch (dataRuleSetting.TakeOperation)
{
case TakeOperation.First:
var lazyFirst = contentQuery.LazyFirstOrDefault();
return GetCacheData(dataRuleSetting.TakeOperation, contentQuery, policy, () => lazyFirst.Value);
case TakeOperation.Count:
var lazyCount = contentQuery.LazyCount();
return GetCacheData(dataRuleSetting.TakeOperation, contentQuery, policy, () => lazyCount.Value);
case TakeOperation.List:
default:
return GetCacheData(dataRuleSetting.TakeOperation, contentQuery, policy, () => contentQuery.ToArray());
}
}
else
{
switch (dataRuleSetting.TakeOperation)
{
case TakeOperation.First:
return contentQuery.FirstOrDefault();
case TakeOperation.Count:
return contentQuery.Count();
case TakeOperation.List:
default:
return contentQuery.ToArray();
}
}
}
public static Lazy <T> LazyFirstOrDefault <T>(this IContentQuery <T> contentQuery)
where T : ContentBase
{
contentQuery = contentQuery.Create(new CallExpression(contentQuery.Expression, CallType.FirstOrDefault));
return(new Lazy <T>(() => contentQuery.FirstOrDefault()));
}
