javascript - ExtJs Grid into a BufferedGrid -

-

the problem of making grid buffered grid not resolved.as have applied of techniques being used,the problem in grid still exists.how can apply bufferedrenderer or bufferedgrid property in applied extjs grid loads 20000 records?

the way can tell try buffered store, try set on store buffered: true;

that allows store prefetch , cache in page cache, pages of records, , satisfy loading requirements page cache.

to use buffered stores, initiate process loading first page. number of rows rendered determined automatically, , range of pages needed keep cache primed scrolling requested , cached. example:

mystore.loadpage(1); // load page 1

a bufferedrenderer instantiated monitor scrolling in grid, , refresh view's rows page cache needed. pull new data page cache when scrolling of view draws upon data near either end of prefetched data.

the margins trigger view refreshing prefetched data ext.grid.plugin.bufferedrenderer.numfromedge, ext.grid.plugin.bufferedrenderer.leadingbufferzone , ext.grid.plugin.bufferedrenderer.trailingbufferzone.

the margins trigger loading more data page cache are, leadingbufferzone , trailingbufferzone.

by default, 5 pages of data (in addition pages on visible region) cached in page cache, old pages being evicted cache view moves down through dataset. controlled purgepagecount setting.

setting value 0 means no pages ever scrolled out of page cache, , whole dataset may become present in page cache. desirable long datasets not reach astronomical proportions.

i had same problem on extjs 5 , solved buffered store, in version of ext there isn't specific class in mine version, maybe can property

here can read buffered store on extjs 5: http://docs.sencha.com/extjs/5.1/5.1.2-apidocs/#!/api/ext.data.bufferedstore


Comments

Post a Comment

Popular posts from this blog

c# - How Configure Devart dotConnect for SQLite Code First? -

-
can configure following sample code ? when run following code, error : no entity framework provider found ado.net provider invariant name 'devart.data.sqlite' setting in machine.config <system.data> <dbproviderfactories> <add name="dotconnect sqlite" invariant="devart.data.sqlite" description="devart dotconnect sqlite" type="devart.data.sqlite.sqliteproviderfactory, devart.data.sqlite, version=4.6.287.0, culture=neutral, publickeytoken=09af7300eec23701" /> </dbproviderfactories> </system.data> after add below block code in app.config <?xml version="1.0"?> <configuration>   <configsections> <!-- more information on entity framework configuration, visit http://go.microsoft.com/fwlink/?linkid=237468 --> <section name="entityframework" type="system.data.entity.internal.configfile.entityframeworksection, entit...
Read more

java - Copying object fields -

-
what best way of copying classes when need have 2 independent variables? have simple class: public class myclass { boolean = false; string b= "not empty"; } do need make method : assign(myclass data ) { a= data.a; b= data.b; } is there automatic method copy (duplicate) objects in java? do need make method : pretty close. instead of making method, should make constructor. such constructors called copy constructor , , create them this: myclass(myclass data) { = data.a; b = data.b; } and create copy of instance, use constructor this: myclass obj1 = new myclass(); myclass obj2 = new myclass(obj1); copy constructor can tedious : using copy constructor create deep-copy can tedious, when class has mutable fields. in case, assignment create copy of reference, , not object itself. have create copy of fields (if want deep copy). can go recursive. a better way create deep copy serialize , deserialize object. why not use clone()? ...
Read more

c++ - Clear the memory after returning a vector in a function -

-
i have function processes , stores lot of data in , returns results vector of class. amount of data stored in function tremendous , want clear storage memory of function after finished job. necessary (does function automatically clear memory) or should clear memory function? update: vector<customers> process(char* const *filename, vector<int> id) { vector<customers> list_of_customers; (perform actions) return list_of_customers; } variables defined locally within function automatically released @ end of function scope. destructors objects called, should free memory allocated objects (if objects coded correctly). example of such object std::vector . anything you've allocated new must have corresponding delete release storage. try avoid doing own allocation , use raii instead, i.e. containers or smart pointers.
Read more