public virtual object Execute()
{
SQLCeVisitor <T> visitor = new SQLCeVisitor <T>();
visitor.Visite(ContentQuery.Expression);
switch (visitor.CallType)
{
case Kooboo.CMS.Content.Query.Expressions.CallType.Count:
return(Count(visitor));
case Kooboo.CMS.Content.Query.Expressions.CallType.First:
return(First(visitor));
case Kooboo.CMS.Content.Query.Expressions.CallType.LastOrDefault:
return(LastOrDefault(visitor));
case Kooboo.CMS.Content.Query.Expressions.CallType.FirstOrDefault:
return(FirstOrDefault(visitor));
case Kooboo.CMS.Content.Query.Expressions.CallType.Last:
return(Last(visitor));
case Kooboo.CMS.Content.Query.Expressions.CallType.Unspecified:
default:
return(List(visitor));
}
}
private SQLCeVisitor <T> VisitInner(IExpression expression)
{
SQLCeVisitor <T> visitor = new SQLCeVisitor <T>(this.Parameters);
visitor.Visite(expression);
//combine the order expressions.
this.OrderClauses.AddRange(visitor.OrderClauses);
this.CategoryQueries = this.CategoryQueries.Concat(visitor.CategoryQueries);
return(visitor);
}
public override string BuildQuerySQL(SQLCeVisitor <Models.TextContent> visitor, out IEnumerable <Parameter> parameters)
{
var innerVisitor = new SQLCeVisitor <Models.TextContent>(visitor.Parameters);
innerVisitor.Visite(childrenQuery.ParentQuery.Expression);
var innerExecutor = (new TextContentTranslator()).Translate(childrenQuery.ParentQuery);
var innerQuerySQL = innerExecutor.BuildQuerySQL(innerVisitor, out parameters);
string selectClause = "*";
if (visitor.SelectFields != null && visitor.SelectFields.Length > 0)
{
selectClause = string.Join(",", visitor.SelectFields);
}
string whereClause = visitor.WhereClause;
if (childrenQuery.EmbeddedFolder != null)
{
var paraName = visitor.AppendParameter(childrenQuery.EmbeddedFolder.FullName);
whereClause = whereClause + " AND FolderName=" + paraName;
}
//var paraName = visitor.AppendParameter(parentQuery.ChildrenQuery.FullName);
//whereClause = whereClause + "AND FolderName=" + paraName;
string sql = string.Format(@"
SELECT {0} FROM [{1}] children
WHERE EXISTS(
SELECT UUID
FROM ({2})parent
WHERE parent.UUID = children.ParentUUID
) AND {3}", selectClause
, childrenQuery.ChildSchema.GetTableName()
, innerQuerySQL
, whereClause);
return(sql);
}
public override string BuildQuerySQL(SQLCeVisitor <TextContent> visitor, out IEnumerable <Parameter> parameters)
{
var innerVisitor = new SQLCeVisitor <Models.TextContent>(visitor.Parameters);
innerVisitor.Visite(categoriesQuery.InnerQuery.Expression);
var innerExecutor = (new TextContentTranslator()).Translate(categoriesQuery.InnerQuery);
var innerQuerySQL = innerExecutor.BuildQuerySQL(innerVisitor, out parameters);
string selectClause = "*";
if (visitor.SelectFields != null && visitor.SelectFields.Length > 0)
{
selectClause = string.Join(",", visitor.SelectFields);
}
string whereClause = visitor.WhereClause;
var paraName = visitor.AppendParameter(categoriesQuery.CategoryFolder.FullName);
whereClause = whereClause + " AND FolderName=" + paraName;
string sql = string.Format(@"
SELECT {0} FROM [{1}] category
WHERE EXISTS(
SELECT ContentCategory.CategoryUUID
FROM [{2}] ContentCategory,
({3})content
WHERE content.UUID = ContentCategory.UUID AND ContentCategory.CategoryUUID = category.UUID
) AND {4}", selectClause
, categoriesQuery.CategoryFolder.GetSchema().GetTableName()
, categoriesQuery.Repository.GetCategoryTableName()
, innerQuerySQL
, whereClause);
return(sql);
}
private IEnumerable <string> GetCategoryClause(Repository repository, IEnumerable <IContentQuery <TextContent> > categoryQueries, List <Parameter> parameters)
{
TextContentTranslator translator = new TextContentTranslator();
List <string> categoryQueryList = new List <string>();
foreach (var categoryQuery in categoryQueries)
{
var executor = translator.Translate(categoryQuery);
var categoryVisitor = new SQLCeVisitor <TextContent>(parameters);
categoryVisitor.Visite(categoryQuery.Expression);
IEnumerable <Parameter> outParameters;
var categoryQuerySQL = executor.BuildQuerySQL(categoryVisitor, out outParameters);
categoryQueryList.Add(string.Format(@"EXISTS(
SELECT ContentCategory.CategoryUUID
FROM [{0}] ContentCategory,
({1})category
WHERE content.UUID = ContentCategory.UUID AND ContentCategory.CategoryUUID = category.UUID
)", repository.GetCategoryTableName()
, categoryQuerySQL));
}
return(categoryQueryList);
}
