First commit

framework/server/collection/collection.queryCount.js

@@ -0,0 +1,82 @@
+/*
+
+	Copyright (c) 2020, 2023, The Unified Company.
+
+	This code is part of Unify.
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the ESA Software Community License - Strong Copyleft LICENSE,
+	as published by the ESA.
+	See the ESA Software Community License - Strong Copyleft LICENSE, for more details.
+
+	https://unifyjs.org 
+
+*/
+
+import querySQL					from '../../unify/querySQL.js';
+
+import joinSQL	 				from '../../unify/joinSQL.js';
+
+import tools	 				from '../../unify/tools.js';
+
+
+export default class queryCount{
+
+	createJoin() {
+
+		var join = new joinSQL();
+
+		join.table 			= this.tableName;
+
+		join.name 			= "children";
+		
+		join.left.table		= join.name;
+
+		join.right.column	= this.getRight() + "_id";
+
+		join.find( "signed", "true" );
+		//join.find( this.tableName + ".joined", "true" ); // please fix
+
+		return join;
+
+	}
+
+	createQuery() {
+
+		var object				= this.getObject();
+		
+
+		var leftTable 			= this.parentName;
+		
+		var rightTable			= object.propertyName;
+
+		var id					= this.collection.getID();
+
+		var joinTableName 		=  leftTable + "_" + rightTable;
+
+
+		var query 				= new querySQL();
+	
+		query.table 			= joinTableName;
+
+		query.find( this.getLeft() + "_id", id );
+
+
+		return query;
+
+	}
+
+	query() {
+
+		var query	= this.createQuery();
+
+		var join	= this.createJoin();
+		
+		query.addJoin( join );
+
+		// bug : todo : count not length
+		return global.database.query( query ).length;
+
+	}
+
+}