一个封装了realm核心的工具类，直接上手使用
这不是一篇介绍realm基础知识的文章，而是一个封装了realm核心的工具类的介绍使用，里面提供了快捷的增，删，改，查，分页，条件等综合功能
realm基础知识地址（不是我写的，只是感觉写的不错）
http://www.hangge.com/blog/cache/detail_891.html
源码和demo地址
https://github.com/szksky/ZKRealmManager
使用方式：
print("\(ZKRealmManager.shared())")
//MARK: clear
// // 删除指定列表数据
// ZKRealmManager.shared().realmDeleteTypeList(object: Person.self)
//删除当前数据库所有数据
ZKRealmManager.shared().realmDeleteAll()
//MARK: config
// 切换数据库 ZKRealmManager.shared().configRealm(realmId: "100")提供了切换数据库的功能
// 用于退出登录等场景一个用户对应一个数据库，防止数据混乱
// print("default data path \(String(describing: ZKRealmManager.shared().realm.configuration.fileURL?.absoluteString))")
// ZKRealmManager.shared().configRealm(realmId: "100")
// print("default data path \(String(describing: ZKRealmManager.shared().realm.configuration.fileURL?.absoluteString))")
let persons:Results = ZKRealmManager.shared()
.realmGet().objects(Person.self)
//MARK: add 添加测试数据
if persons.count == 0 {
var perA = Array<Person>()
for i in 1...100 {
let p1 = Person()
p1.id = i
p1.name = "zhangsan" + "\(i)"
p1.desc = "desc" + "\(i)"
let dog = Dog()
dog.id = i
dog.name = "dog" + "\(i)"
p1.dog = dog
perA.append(p1)
//添加单个
ZKRealmManager.shared().realmAdd(object: p1)
}
//添加多个
// ZKRealmManager.shared().realmAdds(objects: perA)
}
//上面添加成功这里就是100
print("person list count \(persons.count)")
//MARK: delete
//删除一个
ZKRealmManager.shared().realmDelete(object: persons.first!)
print("person list count \(persons.count)")
//删除多个
let personsQ1:Array<Person> = ZKRealmManager.shared().realmQueryWithParameters(object: Person.self, predicate: NSPredicate(format: "id < 11")) as! Array<Person>
if personsQ1.count > 0 {
ZKRealmManager.shared().realmDeletes(objects: personsQ1)
print("person list count \(persons.count)")
}
//条件删除
ZKRealmManager.shared().realmDeletesWithPredicate(object: Person.self, predicate: NSPredicate(format: "id > 90"))
print("person list count \(persons.count)")
//删除该类型所有
// ZKRealmManager.shared().realmDeleteTypeList(object: Person.self)
// print("person list count \(persons.count)")
//MARK: update 更新数据
// print("person count \(persons.count)")
let personFirst = persons.first
//这样修改必须有主键
//修改单个 1
let personTmp = Person()
personTmp.id = (personFirst?.id)!
personTmp.name = "zhangsanChange1"
// personTmp.desc = "desc80"
ZKRealmManager.shared().realmUpdte(object: personTmp)
print("person name is \(String(describing: persons.first!.name)) \(String(describing: persons.first!.desc))")
print("person count \(persons.count)")
//修改单个2
// //不可以这样修改，修改realm内容需要开启事务，直接修改会崩溃
// personFirst!.name = "zhangsanChange"
//开启事务修改，修改结果直接同步到本地硬盘
// try! ZKRealmManager.shared().realmGet().write {
// personFirst!.name = "zhangsanChange"
// }
print("person name is \(String(describing: persons.first!.name))")
ZKRealmManager.shared().realmUpdateWithTranstion { (isExcute) in
personFirst!.name = "zhangsanChange"
}
print("person name is \(String(describing: persons.first!.name))")
//修改多个
var personsA2:Array<Object> = Array()
for index in 0...10 {
let personTmp = Person()
personTmp.id = 70 + index
personTmp.name = "zhangsanChange" + "\(index)"
personsA2.append(personTmp)
}
ZKRealmManager.shared().realmUpdtes(objects: personsA2)
for p in persons {
print("------->\(p.name) id \(p.id)")
}
print("\(String(describing: persons.last?.name)) \(String(describing: persons.last?.id)) \(String(describing: persons.last?.desc))")
//MARK: quary 查询
//查询指定类型类型的数据
let qA1:Array<Person> = ZKRealmManager.shared().realmQueryWith(object: Person.self) as! Array<Person>
for p in qA1 {
print("------->\(p.name) id \(p.id)")
}
print("\(qA1.count)")
//条件查询指定类型数据
let qA2:Array<Person> = ZKRealmManager.shared().realmQueryWithParameters(object: Person.self, predicate: NSPredicate(format: "id > 70")) as! Array<Person>
for p in qA2 {
print("------->\(p.name) id \(p.id)")
}
print("\(qA2.count)")
//分页查询指定类型数据
let qA3:Array<Person> = ZKRealmManager.shared().realmQueryWithParametersPage(object: Person.self, fromIndex: 7, pageSize: 5) as! Array<Person>
for p in qA3 {
print("------->\(p.name) id \(p.id)")
}
print("\(qA3.count)")
//条件查排序询指定类型数据
let qA4:Array<Person> = ZKRealmManager.shared().realmQueryWithParametersAndSorted(object: Person.self, predicate: NSPredicate(format: "id > 60"), sortedKey: "id", isAssending: false) as! Array<Person>
for p in qA4 {
print("------->\(p.name)")
}
print("\(qA4.count)")
//条件分页查排序询指定类型数据
let qA5:Array<Person> = ZKRealmManager.shared().realmQueryWithParametersAndSortedAndPaged(object: Person.self, predicate: NSPredicate(format: "id > 40"), sortedKey: "id", isAssending: true, fromIndex: 2, pageSize: 10) as! Array<Person>
for p in qA5 {
print("------->\(p.name) id \(p.id)")
}
print("\(qA4.count)")
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