Function remRelation

graphdb.js:496–543

(self, relation, indexA, indexB, callback)

}

function remRelation(self, relation, indexA, indexB, callback) {

	var tasks = [];
	var relA = null;
	var relB = null;

	tasks.push(function(next) {
		self.read(indexA, function(err, doc, relid) {
			if (doc) {
				relA = relid;
				next();
			} else {
				tasks = null;
				next = null;
				callback(new Error('GraphDB: Node (A) "{0}" not exists.'.format(indexA)));
			}
		});
	});

	tasks.push(function(next) {
		self.read(indexB, function(err, doc, relid) {
			if (doc) {
				relB = relid;
				next();
			} else {
				tasks = null;
				next = null;
				callback(new Error('GraphDB: Node (B) "{0}" not exists.'.format(indexB)));
			}
		});
	});

	tasks.async(function() {

		if (F.isKilled)
			return;

		IMPORTATOPERATIONS++;
		remRelationLink(self, relA, indexB, function(err, countA) {
			remRelationLink(self, relB, indexA, function(err, countB) {
				remRelationLink(self, relation.documentindex, indexA, function(err, countC) {
					IMPORTATOPERATIONS--;
					callback(null, (countA + countB + countC) > 1);
				});
			});
		});
	});
}

function remRelationLink(self, index, documentindex, callback, nochild, counter) {