/
InternalNotificationLogger.scala
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/
InternalNotificationLogger.scala
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/**
* Copyright (c) 2002-2015 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.cypher.internal.compiler.v2_3
import org.neo4j.cypher.internal.compiler.v2_3.notification.InternalNotification
/**
* A NotificationLogger records notifications.
*/
sealed trait InternalNotificationLogger {
def log(notification: InternalNotification )
def notifications: Seq[InternalNotification ]
def += (notification: InternalNotification) = log(notification)
}
/**
* A null implementation that discards all notifications.
*/
case object devNullLogger extends InternalNotificationLogger {
override def log(notification: InternalNotification ) {}
override def notifications: Seq[InternalNotification ] = Seq.empty
}
/**
* NotificationLogger that records all notifications for later retrieval.
*/
class RecordingNotificationLogger extends InternalNotificationLogger {
private val builder = Seq.newBuilder[InternalNotification]
def log(notification: InternalNotification ) = builder += notification
def notifications = builder.result()
}