Function remDocumentAll

graphdb.js:980–1041

(self, index, callback, count)

}

function remDocumentAll(self, index, callback, count) {

	var offset = offsetDocument(self, index);
	var buf = U.createBufferSize(17);

	// type (1b)              = from: 0
	// index (1b)             = from: 1
	// state (1b)             = from: 2
	// pageindex (4b)         = from: 3
	// relationindex (4b)     = from: 7  (it's for relations between two documents in TYPE_RELATION page)
	// parentindex (4b)       = from: 11
	// size/count (2b)        = from: 15
	// data                   = from: 17

	if (!count)
		count = 0;

	Fs.read(self.fd, buf, 0, buf.length, offset, function() {

		var relid = buf.readUInt32LE(7);

		if (buf[2] === STATE_REMOVED) {
			if (relid)
				remDocumentAll(self, relid, callback, count);
			else
				callback(null, count);
			return;
		}

		buf.writeUInt8(STATE_REMOVED, 2);
		buf.writeUInt16LE(0, 15);

		if (buf[0] === TYPE_CLASS)
			self.$classes[buf[1]].findfreeslots = true;

		var pageindex = buf.readUInt32LE(3);

		Fs.write(self.fd, buf, 0, buf.length, offset, function() {

			// Updates "documents" in the current page
			updPageMeta(self, pageindex, function(err, buf) {

				// type (1b)              = from: 0
				// index (1b)             = from: 1
				// documents (2b)         = from: 2
				// freeslots (1b)         = from: 4
				// parentindex (4b)       = from: 5

				var documents = buf.readUInt16LE(2);
				buf.writeUInt16LE(documents > 0 ? documents - 1 : documents, 2);
				count++;

				setImmediate(function() {
					if (relid)
						remDocumentAll(self, relid, callback, count);
					else
						callback(null, count);
				});