db.objectStoreNames.contains('objectStore')) { db.createObjectStore('objectStore', { keyPath: 'id...', 'objectStoreCopy', 'notObjectStore'], 'readonly'); let os = transcation.objectStore('objectStore')...'); let ms = transcation.objectStore('mixStore'); objectStore()方法说明： 传入需要操作的表的名称。...let transcation = db .transaction(['objectStore'], 'readwrite'); let os = transcation.objectStore('objectStore...= db .transaction(['objectStore'], 'readwrite'); let os = transcation.objectStore('objectStore'); /
(ObjectStore.java:3202) 18/03/26 18:18:29 [main]: DEBUG metastore.ObjectStore: Open transaction: count...= 2, isActive = true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java...true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java:3515) 18/03/...(ObjectStore.java:3894) 18/03/26 18:18:29 [main]: DEBUG metastore.ObjectStore: Open transaction: count...true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java:3515) 18/03/
(ObjectStore.java:3202) 18/03/26 16:19:51 [main]: DEBUG metastore.ObjectStore: Open transaction: count...= 2, isActive = true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java...true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java:3515) 18/03/...26 16:19:51 [main]: DEBUG metastore.ObjectStore: Rollback transaction, isActive: true at: org.apache.hadoop.hive.metastore.ObjectStore.addRole...at org.apache.hadoop.hive.metastore.ObjectStore.addRole(ObjectStore.java:3205) at sun.reflect.NativeMethodAccessorImpl.invoke0
indexedDB 的特性 对象仓库 有了数据库后我们自然希望创建一个表用来存储数据，但 indexedDB 中没有表的概念，而是 objectStore，一个数据库中可以包含多个 objectStore...，objectStore 是一个灵活的数据结构，可以存放多种类型数据。...也就是说一个 objectStore 相当于一张表，里面存储的每条数据和一个键相关联。...） // objectStore就相当于数据库中的一张表。...}; 数据库的 objectStore 游标查询 var trans = db.transaction(personStore, 'readwrite'); var store = trans.objectStore
at org.apache.hadoop.hive.metastore.ObjectStore.addRole(ObjectStore.java:3051) at sun.reflect.NativeMethodAccessorImpl.invoke0...(ObjectStore.java:3048) 18/06/23 07:31:08 [main]: DEBUG metastore.ObjectStore: Open transaction: count...= 2, isActive = true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java...true at: org.apache.hadoop.hive.metastore.ObjectStore.getMRole(ObjectStore.java:3333) 18/06/...at org.apache.hadoop.hive.metastore.ObjectStore.addRole(ObjectStore.java:3051) at sun.reflect.NativeMethodAccessorImpl.invoke0
= transaction.objectStore(storeName); objectStore.add(dataObject); transaction.oncomplete = handleSuccess...= transaction.objectStore(storeName); const index = objectStore.index(indexName); const request = index.get...= transaction.objectStore(storeName); const request = objectStore.put(updatedDataObject, primaryKey)...= transaction.objectStore(storeName); const request = objectStore.delete(primaryKey); request.oncomplete...= transaction.objectStore(storeName); const request = objectStore.delete(recordKey); request.onsuccess
数据库打开报错') } //数据库升级事件 request.onupgradeneeded = function (event) { db = event.target.result let objectStore...db.objectStoreNames.contains('person')) { objectStore = db.createObjectStore('person', { keyPath:...'id' }) objectStore.createIndex('name', 'name', { unique: false }) objectStore.createIndex('...}) } } const addData = () => { let request = db .transaction(['person'], 'readwrite') .objectStore...= transaction.objectStore('person') let request = objectStore.get(1) request.onerror = function
objectStore.transaction.oncomplete = function(event) { // Store values in the newly created objectStore...}; var objectStore = transaction.objectStore("customers"); customerData.forEach(function(customer) {...下面是一个更新的例子： var objectStore = db.transaction(["customers"], "readwrite").objectStore("customers"); var...使用游标cursor indexedDB支持游标操作，我们可以使用cursor来遍历objectStore的数据： var objectStore = db.transaction("customers...").objectStore("customers"); objectStore.openCursor().onsuccess = function(event) { var cursor = event.target.result
= transaction.objectStore('table1'); var index = objectStore.index('name'); objectStore.add...= transaction.objectStore('table1'); var request = objectStore.get(1); request.onsuccess =...= transaction.objectStore('table1'); var request = objectStore.openCursor(); request.onsuccess...= transaction.objectStore('table1'); var index = objectStore.index('name'); // 第一种，get方法...删除数据 当我们需要删除已经无用的数据时，我们可以通过以下方法： var objectStore = transaction.objectStore("customers"); var request
('id', 'id', { unique: true }); objectStore.createIndex('name', 'name');...= this.db.transaction([this.storeName], 'readwrite').objectStore(this.storeName); let request =...= transaction.objectStore(this.storeName); // 添加到数据对象中 var objectStoreRequest = objectStore.add...let objectStoreRequest = objectStore.delete(id); // 删除成功后 objectStoreRequest.onsuccess =...= transaction.objectStore(this.storeName); // 获取存储的对应键的存储对象 let objectStoreRequest = objectStore.get
('person', { keyPath: 'id' }); objectStore.createIndex('name', 'name', { unique: false }); objectStore.createIndex...新建事务以后，通过IDBTransaction.objectStore(name)方法，拿到 IDBObjectStore 对象，再通过表格对象的add()方法，向表格写入一条记录。...function read() { var transaction = db.transaction(['person']); var objectStore = transaction.objectStore...function readAll() { var objectStore = db.transaction('person').objectStore('person'); objectStore.openCursor...objectStore.createIndex('name', 'name', { unique: false }); 现在，就可以从name找到对应的数据记录了。
INFO HiveMetaStore: 0: Opening raw store with implemenation class:org.apache.hadoop.hive.metastore.ObjectStore...15/12/24 20:46:03 INFO ObjectStore: ObjectStore, initialize called 15/12/24 20:46:03 INFO Persistence...INFO Persistence: Property datanucleus.cache.level2 unknown - will be ignored 15/12/24 20:46:17 INFO ObjectStore...: Initialized ObjectStore 15/12/24 20:46:31 WARN ObjectStore: Version information not found in metastore...15/12/24 20:46:37 INFO ObjectStore: ObjectStore, initialize called 15/12/24 20:46:37 INFO Persistence
对象仓库：对象仓库 ObjectStore 在 IndexedDB 中对应的是 MYSQL 中的表 Table。...('id', 'id', { unique: true }); objectStore.createIndex('name', 'name'); objectStore.createIndex...= transaction.objectStore('person'); // 添加到数据对象中, 传入javascript对象 objectStore.add(newItem); 新建操作是在新建了一个...= transaction.objectStore('person'); // 获取存储的对应键的存储对象, 传入主键 id，值为 1 let objectStoreRequest = objectStore.get...= transaction.objectStore('person'); // 获取存储的对应键的存储对象, 传入主键 id，值为 1 let objectStoreRequest = objectStore.delete
所以，对存储空间（objectStore）的操作都要基于事务来进行。...1.1第一个参数是一个数组， 一个我们希望事务能够操作的objectStore所组成的数组，如果你希望这个事务能够操作所有的objectStore,那么传入空数组[]即可 1.2 第二个参数是一个字符串...方法 这个方法接受一个参数： 指定的objectStore的名称， 方法返回的是获取到的objectStore 例如我们下面的一行代码： var objectStore = transaction.objectStore...("people"); 写操作 写操作的关键在于objectStore.add(XXX);方法，其中XXX是我们初始化objectStore时候写入的“主键” 也就是 var objectStore =...我们已经成功添加了三条数据进去了 删操作 删操作的关键在于objectStore.delete(XXX);方法，其中XXX是我们初始化objectStore时候写入的“主键” 也就是 var objectStore
request.onupgradeneeded = (event) => { const db = event.target.result; // 如果存在则删除当前 objectStore。...db.objectStoreNames.contains('person')) { objectStore = db.createObjectStore('person', { keyPath...: 'id' }); }else{ objectStore = db.createObjectStore('person', { keyPath: 'id' }); } objectStore.createIndex...('name', 'name', { unique: false }); objectStore.createIndex('age', 'age', { unique: false });...= transaction.objectStore('person'); var request = objectStore.get(1); request.onerror = function
()方法中指定对象存储空间，就得到了可以对该对象存储空间进行操作的对象objectStore....从数据库中删除数据 删除数据使用delete方法，同上类似: varrequest= db.transaction(['movies'],'readwrite') .objectStore('movies...我们向数据库中插入一条数据，使title重复: db.transaction('movies','readwrite').objectStore('movies') .add({alt:'https:/...在indexedDB2规范中，在对象存储空间对象上纳入了一个getAll()方法，可以获取所有对象: objectStore.getAll().onsuccess=function(event){ };...对象完成，var objectStore = transaction.objectStore(storeName) 对数据库数据操作有: add()、get()、delete()、put等方法 查找数据可以使用索引
= transaction.objectStore("log" /*表名，和上面一致*/); // 插入数据 const addRequest = objectStore.add({ project...= transaction.objectStore("log" /*表名，和上面一致*/); // 根据唯一 key 读取数据 const readReq = objectStore.get...= transaction.objectStore("log" /*表名，和上面一致*/); var index = objectStore.index("project"); // 指定索引...= db.createObjectStore('logs', { autoIncrement: true, }); // 创建 索引 objectStore.createIndex...( 'project_idx', 'project', { unique: false } ); objectStore.createIndex( 'log_time_idx
= trans2.objectStore("foo") var objectStore1 = trans1.objectStore("foo") objectStore2.put("2", "key"...); objectStore1.put("1", "key"); cursor: 主要是用来遍历 DB 里面的数据内容。...= transaction.objectStore('rushAlbumList'); objectStore.openCursor().onsuccess = function(event)...= transaction.objectStore("customers"); # 遍历存储数据 for (var i in customerData) { var request = objectStore.add...}; } 事务在创建的时候不仅仅可以制定执行的模式，还可以指定本次事务能够影响的 ObjectStore 范围，具体细节就是在第一个 transaction 参数里面传入的是一个数据，然后通过 objectStore
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