Lift Framework example source code file (MappedDateTime.scala)

This example Lift Framework source code file (MappedDateTime.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

boolean, box, date, date, fatlazy, full, jdbc, mappeddatetime, method, reflection, sql, string, string, t, t, unit, unit, util

The Lift Framework MappedDateTime.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 mapper

import java.sql.{ResultSet, Types}
import java.util.Date
import java.lang.reflect.Method

import net.liftweb._
import util._
import common._
import Helpers._
import http._
import json._
import S._
import js._

import scala.xml.{NodeSeq}

abstract class MappedDateTime[T<:Mapper[T]](val fieldOwner: T) extends MappedField[Date, T] {
  private val data = FatLazy(defaultValue)
  private val orgData = FatLazy(defaultValue)

  /**
   * This method defines the string parsing semantics of this field. Used in setFromAny.
   * By default uses LiftRules.dateTimeConverter's parseDateTime; override for field-specific behavior
   */
  def parse(s: String): Box[Date] = LiftRules.dateTimeConverter().parseDateTime(s)
  /**
   * This method defines the string parsing semantics of this field. Used in toString, _toForm.
   * By default uses LiftRules.dateTimeConverter's formatDateTime; override for field-specific behavior
   */
  def format(d: Date): String = LiftRules.dateTimeConverter().formatDateTime(d)

  protected def real_i_set_!(value: Date): Date = {
    if (value != data.get) {
      data() = value
      this.dirty_?( true)
    }
    data.get
  }

  def dbFieldClass = classOf[Date]

  def asJsonValue: Box[JsonAST.JValue] = Full(is match {
    case null => JsonAST.JNull
    case v => JsonAST.JInt(v.getTime)
  })

  def toLong: Long = is match {
    case null => 0L
    case d: Date => d.getTime / 1000L
  }

  def asJsExp: JsExp = JE.Num(toLong)

  /**
   * Get the JDBC SQL Type for this field
   */
  def targetSQLType = Types.TIMESTAMP

  def defaultValue: Date = null
  // private val defaultValue_i = new Date

  override def writePermission_? = true
  override def readPermission_? = true

  protected def i_is_! = data.get
  protected def i_was_! = orgData.get
  protected[mapper] def doneWithSave() {orgData.setFrom(data)}

  protected def i_obscure_!(in : Date) : Date = {
    new Date(0L)
  }

  /**
   * Create an input field for the item
   */
  override def _toForm: Box[NodeSeq] =
  S.fmapFunc({s: List[String] => this.setFromAny(s)}){funcName =>
  Full(appendFieldId(<input type={formInputType}
                     name={funcName}
                     value={is match {case null => "" case s => format(s)}}/>))
  }

  override def setFromAny(f: Any): Date = f match {
    case JsonAST.JNull => this.set(null)
    case JsonAST.JInt(v) => this.set(new Date(v.longValue))
    case n: Number => this.set(new Date(n.longValue))
    case "" | null => this.set(null)
    case s: String => parse(s).map(d => this.set(d)).openOr(this.is)
    case (s: String) :: _ => parse(s).map(d => this.set(d)).openOr(this.is)
    case d: Date => this.set(d)
    case Some(d: Date) => this.set(d)
    case Full(d: Date) => this.set(d)
    case None | Empty | Failure(_, _, _) => this.set(null)
    case _ => this.is
  }

  def jdbcFriendly(field : String) : Object = is match {
    case null => null
    case d => new java.sql.Timestamp(d.getTime)
  }

  def real_convertToJDBCFriendly(value: Date): Object = if (value == null) null else new java.sql.Timestamp(value.getTime)

  private def st(in: Box[Date]): Unit =
  in match {
    case Full(d) => data.set(d); orgData.set(d)
    case _ => data.set(null); orgData.set(null)
  }

  def buildSetActualValue(accessor: Method, v: AnyRef, columnName: String): (T, AnyRef) => Unit =
  (inst, v) => doField(inst, accessor, {case f: MappedDateTime[T] => f.st(toDate(v))})

  def buildSetLongValue(accessor: Method, columnName: String): (T, Long, Boolean) => Unit =
  (inst, v, isNull) => doField(inst, accessor, {case f: MappedDateTime[T] => f.st(if (isNull) Empty else Full(new Date(v)))})

  def buildSetStringValue(accessor: Method, columnName: String): (T, String) => Unit =
  (inst, v) => doField(inst, accessor, {case f: MappedDateTime[T] => f.st(toDate(v))})

  def buildSetDateValue(accessor: Method, columnName: String): (T, Date) => Unit =
  (inst, v) => doField(inst, accessor, {case f: MappedDateTime[T] => f.st(Full(v))})

  def buildSetBooleanValue(accessor: Method, columnName: String): (T, Boolean, Boolean) => Unit =
  (inst, v, isNull) => doField(inst, accessor, {case f: MappedDateTime[T] => f.st(Empty)})

  /**
   * Given the driver type, return the string required to create the column in the database
   */
  def fieldCreatorString(dbType: DriverType, colName: String): String = colName + " " + dbType.dateTimeColumnType + notNullAppender()

  def inFuture_? = data.get match {
    case null => false
    case d => d.getTime > millis
  }
  def inPast_? = data.get match {
    case null => false
    case d => d.getTime < millis
  }

  override def toString: String = if(is==null) "NULL" else format(is)
}