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Lift Framework example source code file (CRUDify.scala)

This example Lift Framework source code file (CRUDify.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

box, crudify, fieldpointerbridge, fieldpointerbridge, fieldpointertype, fieldpointertype, keyedentity, squerylbridge, squerylfieldbridge, string, string, t, thecrudtype, thecrudtype

The Lift Framework CRUDify.scala source code

/*
 * Copyright 2006-2011 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 net.liftweb.record.{Record, MetaRecord}
import net.liftweb.proto.Crudify
import org.squeryl._
import net.liftweb.squerylrecord.RecordTypeMode._
import net.liftweb.record.Field
import net.liftweb.common.{Box, Empty, Full}
import scala.xml.NodeSeq

trait CRUDify[K, T <: Record[T] with KeyedEntity[K]] extends Crudify {
  self: MetaRecord[T] =>

  type TheCrudType = T

  type FieldPointerType = Field[_, TheCrudType]

  def table: Table[TheCrudType]

  def idFromString(in: String): K

  override def calcPrefix = table.name :: Nil

  override def fieldsForDisplay: List[FieldPointerType] = metaFields.filter(_.shouldDisplay_?)

  override def computeFieldFromPointer(instance: TheCrudType, pointer: FieldPointerType): Box[FieldPointerType] = instance.fieldByName(pointer.name)

  override def findForParam(in: String): Box[TheCrudType] = {
    table.lookup(idFromString(in))
  }

  override def findForList(start: Long, count: Int) = from(table)(t => select(t)).page(start.toInt, count).toList

  override def create = createRecord

  override def buildBridge(in: TheCrudType) = new SquerylBridge(in)

  protected class SquerylBridge(in: TheCrudType) extends CrudBridge {

    def delete_! = table.delete(in.id)

    def save = {
      if (in.isPersisted) {
        table.update(in)
      }
      else {
        table.insert(in)
      }
      true
    }

    def validate = in.validate

    def primaryKeyFieldAsString = in.id.toString
  }

  def buildFieldBridge(from: FieldPointerType): FieldPointerBridge = new SquerylFieldBridge(from)

  protected class SquerylFieldBridge(in: FieldPointerType) extends FieldPointerBridge {
    def displayHtml: NodeSeq = in.displayHtml
  }

}

Other Lift Framework examples (source code examples)

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