6.よく使うReader
19928 ワード
Reader ArrayReader
proxy , Record Ext.data. Store 。
ArrayReader , Record。
, mapping record 。
ArrayReader , 。
:
- var data = [
- ['id1','name1','descn1'],
- ['id2','name2','descn2']
- ];
ArrayReader :
- var reader = new Ext.data.ArrayReader({
- id:1
- },[
- {name:'name',mapping:1},
- {name:'descn',mapping:2},
- {name:'id',mapping:0},
- ]);
Reader JsonReader
JavaScript ,JSON ,key:value XML ,
, EXT 。
Json- Reader JSON :
- var data = {
- id:0,
- totalProperty:2,
- successProperty:true,
- root:[
- {id:'id1',name:'name1',descn:'descn1'},
- {id:'id2',name:'name2',descn:'descn2'}
- ]
- };
,JSON , totalProperty 。
successProperty , , 。
JsonReader , successProperty false。
JsonReader, JSON , :
- var reader = new Ext.data.JsonReader({
- successProperty: "successproperty",
- totalProperty: "totalProperty",
- root: "root",
- id: "id"
- }, [
- {name:'id',mapping:'id'},
- {name:'name',mapping:'name'},
- {name:'descn',mapping:'descn'}
- ]);
, name mapping , mapping ,
name JSON 。
JSON , mapping 。 ,mapping , :
- var data = {
- id:0,
- totalProperty:2,
- successProperty:true,
- root:[
- {id:'id1',name:'name1',descn:'descn1',person:{
- id:1,name:'man',sex:'male'
- }},
- {id:'id2',name:'name2',descn:'descn2',person:{
- id:2,name:'woman',sex:'female'
- }}
- ]
- };
- var reader = new Ext.data.JsonReader({
- successProperty: "successproperty",
- totalProperty: "totalProperty",
- root: "root",
- id: "id"
- }, [
- 'id','name','descn',
- {name:'person_name',mapping:'person.name'},
- {name:'person_sex',mapping:'person.sex'}
- ]);
, JSON , person id、 name sex 。
JsonReader mapping , record, 。
Reader XmlReader
XML ,XmlReader XML :
- <?xml version="1.0" encoding="utf-8"?>
- <dataset>
- <id>1</id>
- <totalRecords>2</totalRecords>
- <success>true</success>
- <record>
- <id>1</id>
- <name>name1</name>
- <descn>descn1</descn>
- </record>
- <record>
- <id>2</id>
- <name>name2</name>
- <descn>descn2</descn>
- </record>
- </dataset>
dataset XML 。 XmlReader , XML ,
:
- var reader = new Ext.data.XmlReader({
- totalRecords: 'totalRecords',
- success: 'success'
- record: 'record',
- id: "id"
- }, ['id','name','descn']);
XmlReader JsonReader , totalRecords record ,
totalRecords ’totalRecords’ ,record XML record
。
success id JsonReader , id。
XML reader , ,
[{name:’id’},{name:’name’},{name:’descn’}]
[‘id’,’name’,’descn’]。
XmlReader JavaScript XML , 。
localXHR.js XML , , :
- var data = "<?xml version='1.0' encoding='utf-8'?>" +
- "<dataset>" +
- "<id>1</id>" +
- "<totalRecords>2</totalRecords>" +
- "<success>true</success>" +
- "<record>" +
- "<id>1</id>" +
- "<name>name1</name>" +
- "<descn>descn1</descn>" +
- "</record>" +
- "<record>" +
- "<id>2</id>" +
- "<name>name2</name>" +
- "<descn>descn2</descn>" +
- "</record>" +
- "</dataset>";
-
- var xdoc;
-
- if(typeof(DOMParser) == 'undefined'){
- xdoc = new ActiveXObject("Microsoft.XMLDOM");
- xdoc.async="false";
- xdoc.loadXML(data);
- }else{
- var domParser = new DOMParser();
- xdoc = domParser.parseFromString(data, 'application/xml');
- domParser = null;
- }
-
- var proxy = new Ext.data.MemoryProxy(xdoc);
-
- var reader = new Ext.data.XmlReader({
- totalRecords: 'totalRecords',
- success: 'success',
- record: 'record',
- id: "id"
- }, ['id','name','descn']);
-
- var ds = new Ext.data.Store({
- proxy: proxy,
- reader: reader
- });