added: function: default

changes the default item in a directory


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@473 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/db.cpp

@@ -502,7 +502,7 @@ Error Db::EditItemInItem(Item & item, bool with_subject)
 	{
 		AssertConnection();
 		std::ostringstream query;
-		query << "update core.item set (user_id, group_id, privileges, type, parent_id";
+		query << "update core.item set (user_id, group_id, privileges, type, default_item, parent_id";
 		
 		if( with_subject )
 			query << ", url";
@@ -512,6 +512,7 @@ Error Db::EditItemInItem(Item & item, bool with_subject)
 		query << '\'' << item.group_id               << "', ";
 		query << '\'' << item.privileges             << "', ";
 		query << '\'' << static_cast<int>(item.type) << "', ";
+		query << '\'' << item.default_item           << "', ";
 		query << '\'' << item.parent_id              << "'  ";
 		
 		if( with_subject )
@@ -617,6 +618,7 @@ Error Db::EditItemGetContentId(Item & item)
 	{
 		AssertConnection();
 		std::ostringstream query;
+		// !! tutaj chyba nie ma potrzeby robic left join z core.content (nie uzywamy nic z tamtej tabeli)
 		query << "select content_id from core.item left join core.content on item.content_id = content.id where item.id='";
 		query << item.id << "';";
 		
@@ -644,11 +646,17 @@ return result;
 // !! moze nazwa poprostu EditItem (nie trzeba tego ById) ? (sprawdzic czy nie koliduje z inna nazwa)
 Error Db::EditItemById(Item & item, bool with_subject)
 {
-	Error result = EditItemGetContentId(item);
+	Error result = Error::ok;
+	
+	// !! dla katalogow nie testowane jeszcze
+	
+	if( item.type == Item::file )
+		result = EditItemGetContentId(item);
 	
 	if( result == Error::ok )
 	{
-		result = EditItemInContent(item);
+		if( item.type == Item::file )
+			result = EditItemInContent(item);
 
 		if( result == Error::ok )
 			result = EditItemInItem(item, with_subject);
@@ -660,6 +668,7 @@ return result;
 
 
 // item.url and item.parent_id must be set
+// doesn't work with directiories
 Error Db::EditItemByUrl(Item & item, bool with_subject)
 {
 	Error result = EditItemGetId(item);
@@ -677,6 +686,43 @@ return result;
 
 
 
+Error Db::EditDefaultItem(long id, long new_default_item)
+{
+	PGresult * r = 0;
+	Error result = Error::ok;
+		
+	try
+	{
+		AssertConnection();
+		std::ostringstream query;
+		query << "update core.item set (default_item) = ('" << new_default_item << "') where id='" << id << "';";
+		
+		r = AssertQuery(query.str());
+		AssertResultStatus(r, PGRES_COMMAND_OK);
+		
+		char * rows_str = PQcmdTuples(r);
+		long rows = 0;
+		
+		if( rows_str )
+			rows = atol(rows_str);
+			
+		if( rows == 0 )
+		{
+			result = Error::db_no_item;
+			log << log1 << "Db: EditDefaultItem: no such item, id: " << id << logend;	
+		}
+	}
+	catch(const Error & e)
+	{
+		result = e;
+	}
+	
+	ClearResult(r);
+
+return result;
+}
+
+
 
 
 PGresult * Db::GetItemsQuery(Item & item_ref)
@@ -806,6 +852,55 @@ return result;
 }
 
 
+long Db::GetItemId(long parent_id, const std::string & url, Item::Type type)
+{
+	PGresult * r = 0;
+	long result  = -1;
+	
+	try
+	{
+		AssertConnection();
+
+		std::ostringstream query;
+		query << "select id from core.item where type='" << static_cast<int>(type) << "' and item.parent_id='";
+		query << parent_id << "' and item.url='" << Escape(url) << "';";
+		
+		r = AssertQuery( query.str() );
+		AssertResultStatus(r, PGRES_TUPLES_OK);
+
+		int rows = PQntuples(r);
+	
+		if( rows == 1 )
+			result = atol( AssertValue(r, 0, 0) );
+	}
+	catch(const Error & e)
+	{
+		result = e;
+	}
+	
+	ClearResult(r);
+	
+	
+return result;
+}
+
+
+
+long Db::GetFileId(long parent_id, const std::string & url)
+{
+	return GetItemId(parent_id, url, Item::file);
+}
+
+
+long Db::GetDirId(long parent_id, const std::string & url)
+{
+	return GetItemId(parent_id, url, Item::dir);
+}
+
+
+
+
+
 bool Db::GetPriv(Item & item, long id)
 {
 bool result = false;