data/ObjectStore

dojo/data/ObjectStore

dojo/Evented

Summary

A Dojo Data implementation that wraps Dojo object stores for backwards compatibility.

Usage

var foo = new ObjectStore(options);

dojo/data/ObjectStore

Parameter Type Description
options undefined

The configuration information to pass into the data store.

  • options.objectStore:

The object store to use as the source provider for this data store

See the dojo/data/ObjectStore reference documentation for more information.

Properties

labelProperty

Defined by: dojo/data/ObjectStore

objectStore

Defined by: dojo/data/ObjectStore

Methods

changing(object,_deleting)

Defined by dojo/data/ObjectStore

adds an object to the list of dirty objects. This object contains a reference to the object itself as well as a cloned and trimmed version of old object for use with revert.

Parameter Type Description
object Object

Indicates that the given object is changing and should be marked as dirty for the next save

_deleting Boolean

close(request)

Defined by dojo/data/ObjectStore

See dojo/data/api/Read.close()

Parameter Type Description
request undefined

Returns: undefined

containsValue(item,attribute,value)

Defined by dojo/data/ObjectStore

Checks to see if 'item' has 'value' at 'attribute'

Parameter Type Description
item Object

The item to check

attribute String

The attribute to check

value Anything

The value to look for

Returns: boolean

deleteItem(item)

Defined by dojo/data/ObjectStore

deletes item and any references to that item from the store.

Parameter Type Description
item undefined

item to delete

emit(type,event)

Defined by dojo/Evented

Parameter Type Description
type undefined
event undefined

Returns: undefined

fetch(args)

Defined by dojo/data/ObjectStore

See dojo/data/api/Read.fetch()

Parameter Type Description
args undefined

Returns: undefined

fetchItemByIdentity(args)

Defined by dojo/data/ObjectStore

fetch an item by its identity, by looking in our index of what we have loaded

Parameter Type Description
args undefined

Returns: undefined

getAttributes(item)

Defined by dojo/data/ObjectStore

Gets the available attributes of an item's 'property' and returns it as an array.

Parameter Type Description
item Object

Returns: Array

getFeatures()

Defined by dojo/data/ObjectStore

return the store feature set

Returns: object

getIdentity(item)

Defined by dojo/data/ObjectStore

returns the identity of the given item See dojo/data/api/Read.getIdentity()

Parameter Type Description
item undefined

Returns: undefined

getIdentityAttributes(item)

Defined by dojo/data/ObjectStore

returns the attributes which are used to make up the identity of an item. Basically returns this.objectStore.idProperty See dojo/data/api/Read.getIdentityAttributes()

Parameter Type Description
item undefined

Returns: Array

getLabel(item)

Defined by dojo/data/ObjectStore

See dojo/data/api/Read.getLabel()

Parameter Type Description
item dojo/data/api/Item

Returns: undefined

getLabelAttributes(item)

Defined by dojo/data/ObjectStore

See dojo/data/api/Read.getLabelAttributes()

Parameter Type Description
item dojo/data/api/Item

Returns: Array

getValue(item,property,defaultValue)

Defined by dojo/data/ObjectStore

Gets the value of an item's 'property'

Parameter Type Description
item Object

The item to get the value from

property String

property to look up value for

defaultValue value
Optional

the default value

Returns: value

the default value

getValues(item,property)

Defined by dojo/data/ObjectStore

Gets the value of an item's 'property' and returns it. If this value is an array it is just returned, if not, the value is added to an array and that is returned.

Parameter Type Description
item Object
property String

property to look up value for

Returns: Array

hasAttribute(item,attribute)

Defined by dojo/data/ObjectStore

Checks to see if item has attribute

Parameter Type Description
item Object

The item to check

attribute String

The attribute to check

Returns: boolean

isDirty(item)

Defined by dojo/data/ObjectStore

returns true if the item is marked as dirty or true if there are any dirty items

Parameter Type Description
item Object

The item to check

Returns: boolean | undefined

isItem(item)

Defined by dojo/data/ObjectStore

Checks to see if the argument is an item

Parameter Type Description
item Object

The item to check

Returns: boolean

isItemLoaded(item)

Defined by dojo/data/ObjectStore

Checks to see if the item is loaded.

Parameter Type Description
item Object

The item to check

Returns: undefined

loadItem(args)

Defined by dojo/data/ObjectStore

Loads an item and calls the callback handler. Note, that this will call the callback handler even if the item is loaded. Consequently, you can use loadItem to ensure that an item is loaded is situations when the item may or may not be loaded yet. If you access a value directly through property access, you can use this to load a lazy value as well (doesn't need to be an item).

Parameter Type Description
args Object

See dojo/data/api/Read.fetch()

Returns: undefined

Examples

Example 1

store.loadItem({
    item: item, // this item may or may not be loaded
    onItem: function(item){
        // do something with the item
    }
});

newItem(data,parentInfo)

Defined by dojo/data/ObjectStore

adds a new item to the store at the specified point. Takes two parameters, data, and options.

Parameter Type Description
data Object

See dojo/data/api/Write.newItem()

parentInfo undefined

Returns: Object

See dojo/data/api/Write.newItem()

on(type,listener)

Defined by dojo/Evented

Parameter Type Description
type undefined
listener undefined

Returns: undefined

revert()

Defined by dojo/data/ObjectStore

returns any modified data to its original state prior to a save();

save(kwArgs)

Defined by dojo/data/ObjectStore

Saves the dirty data using object store provider. See dojo/data/api/Write for API.

Parameter Type Description
kwArgs undefined
  • kwArgs.global: This will cause the save to commit the dirty data for all ObjectStores as a single transaction.

  • kwArgs.revertOnError: This will cause the changes to be reverted if there is an error on the save. By default a revert is executed unless a value of false is provide for this parameter.

  • kwArgs.onError: Called when an error occurs in the commit

  • kwArgs.onComplete: Called when an the save/commit is completed

setValue(item,attribute,value)

Defined by dojo/data/ObjectStore

sets 'attribute' on 'item' to 'value' See dojo/data/api/Write.setValue()

Parameter Type Description
item undefined
attribute undefined
value undefined

setValues(item,attribute,values)

Defined by dojo/data/ObjectStore

sets 'attribute' on 'item' to 'value' value must be an array. See dojo/data/api/Write.setValues()

Parameter Type Description
item undefined
attribute undefined
values undefined

unsetAttribute(item,attribute)

Defined by dojo/data/ObjectStore

unsets 'attribute' on 'item' See dojo/data/api/Write.unsetAttribute()

Parameter Type Description
item undefined
attribute undefined

Events

onDelete()

Defined by: dojo/data/ObjectStore

See dojo/data/api/Notification.onDelete()

Examples

Example 1

store.loadItem({
    item: item, // this item may or may not be loaded
    onItem: function(item){
        // do something with the item
    }
});

onFetch(results)

Defined by: dojo/data/ObjectStore

Called when a fetch occurs

Parameter Type Description
results undefined

Examples

Example 1

store.loadItem({
    item: item, // this item may or may not be loaded
    onItem: function(item){
        // do something with the item
    }
});

onNew()

Defined by: dojo/data/ObjectStore

See dojo/data/api/Notification.onNew()

Examples

Example 1

store.loadItem({
    item: item, // this item may or may not be loaded
    onItem: function(item){
        // do something with the item
    }
});

onSet()

Defined by: dojo/data/ObjectStore

See dojo/data/api/Notification.onSet()

Examples

Example 1

store.loadItem({
    item: item, // this item may or may not be loaded
    onItem: function(item){
        // do something with the item
    }
});

© 2005–2015 The Dojo Foundation
Licensed under the AFL 2.1 and BSD 3-Clause licenses.
http://dojotoolkit.org/api/1.10/dojo/data/ObjectStore.html

停课不停学活动
在线笔记
App下载
App下载

扫描二维码

下载编程狮App

公众号
微信公众号

编程狮公众号

意见反馈
返回顶部