alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Lift Framework example source code file (SquerylRecord.scala)

This example Lift Framework source code file (SquerylRecord.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lift Framework tags/keywords

databaseadapter, db, db, dynovar, full, loggable, recordmetadatafactory, recordmetadatafactory, session, some, some, squerylrecord, squerylrecord

The Lift Framework SquerylRecord.scala source code

/*
 * Copyright 2010 WorldWide Conferencing, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.liftweb
package squerylrecord

import common.{Box, Full, Loggable}
import db.DB
import util.DynoVar

import org.squeryl.{Session, SessionFactory}
import org.squeryl.internals.{DatabaseAdapter, FieldMetaData}

/** Object containing initialization logic for the Squeryl/Record integration */
object SquerylRecord extends Loggable {
  /** Keep track of the current Squeryl Session we've created using DB */
  private object currentSession extends DynoVar[Session]

  /**
   * We have to remember the default Squeryl metadata factory before
   * we override it with our own implementation, so that we can use
   * the original factory for non-record classes.
   */
  private[squerylrecord] var posoMetaDataFactory = FieldMetaData.factory

  /**
   * Initialize the Squeryl/Record integration. This must be called somewhere during your Boot, and before you use any
   * Records with Squeryl. Use this function instead of init if you want to use the squeryl session factory
   * instead of mapper.DB as the transaction manager with squeryl-record.
   */
  def initWithSquerylSession(sessionFactory: => Session) {
    FieldMetaData.factory = new RecordMetaDataFactory
    SessionFactory.concreteFactory = Some(() => sessionFactory)
  }

  /**
   * Initialize the Squeryl/Record integration. This must be called somewhere during your Boot, and before you use any
   * Records with Squeryl. Use this function if you want to use mapper.DB as the transaction manager
   * with squeryl-record.
   */
  def init(mkAdapter: () => DatabaseAdapter) = {
    FieldMetaData.factory = new RecordMetaDataFactory
    SessionFactory.externalTransactionManagementAdapter = Some(() => currentSession.is openOr {
      DB.currentConnection match {
        case Full(superConn) =>
          val sess = Session.create(superConn.connection, mkAdapter())
          sess.setLogger(s => logger.debug(s))
          currentSession.set(sess)
          sess

        case _ => error("no current connection in scope. wrap your transaction with DB.use or use one of the DB loan wrappers")
      }
    })
  }
}

Other Lift Framework examples (source code examples)

Here is a short list of links related to this Lift Framework SquerylRecord.scala source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.