database: pagedao: Add-support for subpages

database/pagedao.h

@@ -23,6 +23,8 @@ class PageDao
 	virtual void setCategories(std::string pagename, const std::vector<std::string> &catnames) = 0;
 	virtual std::vector<SearchResult> search(std::string query, QueryOption option) = 0;
 
+	virtual std::vector<std::string> getChildren(std::string pagename) = 0;
+
 	virtual ~PageDao()
 	{
 	}

database/pagedaosqlite.cpp

@@ -57,8 +57,10 @@ std::optional<Page> PageDaoSqlite::findByTitle(std::string title)
 	Page result;
 	try
 	{
-		auto ps = *db << "SELECT id, name, title, lastrevision, visible FROM page WHERE title = ?";
+		auto ps = *db << "SELECT id, name, title, lastrevision, visible, (SELECT name FROM page WHERE id = parent) "
-		ps << title >> std::tie(result.pageid, result.name, result.title, result.current_revision, result.listed);
+						 "FROM page WHERE title = ?";
+		ps << title >> std::tie(result.pageid, result.name, result.title, result.current_revision, result.listed,
+								result.parentpage);
 	}
 	catch(const sqlite::errors::no_rows &e)
 	{
@@ -78,9 +80,10 @@ std::optional<Page> PageDaoSqlite::find(unsigned int id)
 	result.pageid = id;
 	try
 	{
-		auto ps = *db << "SELECT name, title, lastrevision, visible FROM page WHERE id = ?";
+		auto ps = *db << "SELECT name, title, lastrevision, visible, (SELECT name FROM page WHERE id = parent) FROM "
+						 "page WHERE id = ?";
 
-		ps << id >> std::tie(result.name, result.title, result.current_revision, result.listed);
+		ps << id >> std::tie(result.name, result.title, result.current_revision, result.listed, result.parentpage);
 	}
 	catch(const sqlite::errors::no_rows &e)
 	{
@@ -118,10 +121,12 @@ void PageDaoSqlite::save(const Page &page)
 {
 	try
 	{
-		*db << "INSERT OR REPLACE INTO page (id, name, title, lastrevision, visible) VALUES((SELECT id FROM page WHERE "
+		*db << "INSERT OR REPLACE INTO page (id, name, title, lastrevision, visible, parent) VALUES((SELECT id FROM "
+			   "page WHERE "
 			   "name = "
-			   "? OR id = ?), ?, ?, ?, ?)"
+			   "? OR id = ?), ?, ?, ?, ?, (SELECT id FROM page WHERE name = ?))"
-			<< page.name << page.pageid << page.name << page.title << page.current_revision << page.listed;
+			<< page.name << page.pageid << page.name << page.title << page.current_revision << page.listed
+			<< page.parentpage;
 	}
 	catch(sqlite::sqlite_exception &e)
 	{
@@ -140,9 +145,11 @@ std::vector<Page> PageDaoSqlite::getPageList(QueryOption option)
 									  .setVisibleColumnName("visible")
 									  .setPrependWhere(true)
 									  .build();
-		std::string query = "SELECT id, name, title, lastrevision, visible FROM page " + queryOption;
+		std::string query =
-		*db << query >>
+			"SELECT id, name, title, lastrevision, visible,  (SELECT name FROM page WHERE id = parent) FROM page " +
-			[&](unsigned int pageid, std::string name, std::string title, unsigned int current_revision, bool visible)
+			queryOption;
+		*db << query >> [&](unsigned int pageid, std::string name, std::string title, unsigned int current_revision,
+							bool visible, std::string parent)
 		{
 			Page tmp;
 			tmp.pageid = pageid;
@@ -150,6 +157,7 @@ std::vector<Page> PageDaoSqlite::getPageList(QueryOption option)
 			tmp.title = title;
 			tmp.current_revision = current_revision;
 			tmp.listed = visible;
+			tmp.parentpage = parent;
 			result.push_back(tmp);
 		};
 	}
@@ -262,3 +270,11 @@ int PageDaoSqlite::fetchPageId(std::string pagename)
 	auto binder = *db << "SELECT id FROM page WHERE name = ?" << pagename;
 	return execInt(binder);
 }
+
+std::vector<std::string> PageDaoSqlite::getChildren(std::string pagename)
+{
+	std::vector<std::string> result;
+	auto query = *db << "SELECT name FROM page WHERE parent = (SELECT id FROM page WHERE name = ?)" << pagename;
+	query >> [&](std::string page) { result.push_back(page); };
+	return result;
+}

database/pagedaosqlite.h

@@ -28,6 +28,8 @@ class PageDaoSqlite : public PageDao, protected SqliteDao
 	int fetchPageId(std::string pagename);
 	std::vector<SearchResult> search(std::string query, QueryOption option) override;
 	void setCategories(std::string pagename, const std::vector<std::string> &catnames) override;
+	std::vector<std::string> getChildren(std::string pagename) override;
+
 };
 
 #endif // PAGEDAOSQLITE_H

page.h

@@ -8,6 +8,7 @@ class Page
 	Page();
 	std::string name;
 	std::string title;
+	std::string parentpage;
 	bool listed;
 	unsigned int current_revision;
 	unsigned int pageid;