Are there any samples to use DataGrid for lazy loading the data If we have 1000 records, I will set the dataset size to 1000. But in memory, it has only records for that page
When the user clicks on the next or previous links on the pager, we will load the next page items from the database Can this be easily supported by DataGrid? -----Original Message----- From: Eddie O'Neil [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 11, 2006 10:45 PM To: Beehive Users Subject: Re: composite components using tag files On 4/11/06, Srinivas Surapaneni <[EMAIL PROTECTED]> wrote: > We can customize the Sort by using <netui:anchor formSubmit="true"> for the > sort links and if we embed the whole dataGrid in a form. Are you talking > abot the same thing? [eko] Interesting idea -- that might work, but I've never tried it. Let me know. :) > > But the pager links are generated from PagerModel. we have to re implement > the PagerModel that generates the links that use javascript to submit the > form. Does beehive framework support any utility methods to build url's that > simulate the <netui:anchor formSubmit="true"> ? [eko] I'd suggest just writing your own pager UI using JSP 2.0 EL and the Pager Model. Then, you're in complete control of what it looks like and how it functions and can write JavaScript to add parameters to the <netui:form> for POSTing. In this case, three's at least a test of this (no sample yet, sorry) here: http://svn.apache.org/repos/asf/beehive/trunk/netui/test/webapps/drt/web/WEB -INF/tags/org/apache/beehive/netui/test/databinding/tagfiles/jumpToPage.tag This is a pager inside of a JSP 2.0 .tag file that supports jump-to-page functionality that uses an HTML <form> and renders a drop-down box for moving between pages in a data set. Maybe that helps... > > > > > -----Original Message----- > From: Eddie O'Neil [mailto:[EMAIL PROTECTED] > Sent: Tuesday, April 11, 2006 10:26 PM > To: Beehive Users > Subject: Re: composite components using tag files > > This sounds like a classic problem in the web -- user edits data in > a text box and clicks on another link that isn't wired up to POST the > form. :) > > If you're using the auto-generated sort links in the data grid's > <netui-data:headerCell> tags, you should be able to write JavaScript > in the header cell's "onClick" JavaScript event handler that gathers > the data from the form, converts the GET to a POST, and submits it to > the server. But, I've not tried this. :) > > JSF would likely support this case because it converts everything > into POSTs, as I recall. The NetUI data grid does things differently > so that pages can be bookmarked because the state is captured in URLs. > > > I will try the datagrid again with the <netui:form> tags and see how the > > url's are generated for paging and sorting > > Maybe I mistyped -- this won't work by default as a <netui:form> > wrapping a data grid only allows HTML <input> elements to POST from > cells in the grid. But, if you write JavaScript to wire parameters to > the form from the sort / filter / page URLs, you should also be able > to attach that state to the form and POST. I'm interested in that -- > let me know how it works out. > > Thanks! > > Eddie > > > On 4/11/06, Srinivas Surapaneni <[EMAIL PROTECTED]> wrote: > > For the paging and sorting URL's , if you look at the view source from the > > browser, they are using GET and not POST > > > > That is fine if it is read only data > > > > But if we have a editable grid, when the user changes some data in the > text > > box and click on the paging or sorting, the user would like to see the > > changes > > > > This is only possible if we post the form and display it again > > > > Thank You > > Srinivas Surapaneni > > > > -----Original Message----- > > From: Eddie O'Neil [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, April 11, 2006 10:11 PM > > To: Beehive Users > > Subject: Re: composite components using tag files > > > > Comments in line... > > > > On 4/11/06, Srinivas Surapaneni <[EMAIL PROTECTED]> wrote: > > > If I am using a editable grid, I want to use < netui:textbox > > > dataSource="container.item.xxxxxx - where xxxxx I want to use from the > > list > > > of columns that got passed into the tag as attribute > > > > [eko] Apologies -- I think I misunderstood before. When you say "the > > list of columns", you mean the data in the data set being rendered in > > the data grid. :) Yes, this should be possible -- just wrap the data > > grid itself or a specific row in a <netui:form> tag. I looked, and we > > don't seem to have a sample of this, which is unfortunate. I've added > > a JIRA issue: > > > > http://issues.apache.org/jira/browse/BEEHIVE-1098 > > > > to track adding one. > > > > > > > > One more question on the datagrid > > > > > > All the datagrid urls are plain url's , not form posts > > > When we want to use the dataGrid for editable grids, we need to post it. > > > Basically, for all the sorting and paging we have to post the form. Is > > there > > > any plan to provide this feature? > > > > [eko] Not sure I understand this -- could you describe your use case > > in a little more detail? Today, the data grid does paging and sorting > > as HTTP GETs so that the links are bookmarkable and don't require form > > POSTs. Currently, I don't have any plans to change this behavior. > > For editable data grids, you should be able to POST a form for a > > specific row or for the entire data grid, but that's separate from the > > links for sorting, filtering, and paging, which is state that can be > > stored on the server and "re-attached" when an edit is finished. > > > > Again, I'll try to put together an example of this, but it's going to > > take me a couple of weeks to complete because of some other > > committments in the interim. > > > > > > > > > > > Thank You > > > > > > > > > -----Original Message----- > > > From: Eddie O'Neil [mailto:[EMAIL PROTECTED] > > > Sent: Tuesday, April 11, 2006 9:36 PM > > > To: Beehive Users > > > Subject: Re: composite components using tag files > > > > > > Comments in line... > > > > > > > > > On 4/11/06, Srinivas Surapaneni <[EMAIL PROTECTED]> wrote: > > > > I am trying to build composite components from netui tags > > > > > > > > > > [eko] It should be possible to build composite components from the > > > NetUI tags. The only limitation that I'm aware of is that some NetUI > > > JSP tags can't be split across a JSP and a .tag file because they use > > > the method "findAncestorWithClass" which requires some JSP tags to be > > > in a single JSP tag hierarchy. > > > > > > > > > > > > > > > Ex: There is no dual list component, calendar component in beehive > > > > > > [eko] True -- feel free to contribute one! :) > > > > > > > > > > > I am trying to use the new JSP tag file mechanism to create a tag file > > > which > > > > contains all the components required for the dual list > > > > > > > > > > > > > > > > But I need to pass the select options for List 1 , List 2 and 2 > > > datasources > > > > to the tag as attributes > > > > > > > > > > > > > > [eko] The NetUI "dataSource" attribute is a little special as it's > > > used to round-trip data into a page, to the browser, and back to the > > > server on a POST. Usually, you'd only reference the "actionForm" > > > implicit object from a "dataSource". For repeating tags like the data > > > grid, you might reference many other things. The "netui-samples" web > > > application provides some good examples of this, and documentation on > > > the nuances of the "dataSource" attribute are described here: > > > > > > http://beehive.apache.org/docs/1.0.1/netui/databinding.html > > > > > > To pass the options to a select box, you'd use the "optionsDataSource" > > > tag for the choices and use "dataSource" as the place data is stored > > > when a JSP POSTs. The netui-samples/ webapp in the distribution has > > > examples of this. > > > > > > > > > > > > > > > > > > > But the datasource does not take runtime expressions. Is there any way > > to > > > > use runtime expressions for netui components like textBox, select, > > > checkbox > > > > etc > > > > > > > > > > [eko] On the dataSource attribute, this is (unfortunately) not > > > possible because of limitations in the JSP 2.0 Expression Language, > > > though the rest of the attributes should be runtime expressionable. > > > > > > > > > > > > > > > Other thing we are tryinh to create is reusable datagrid > > > > > > > > > > > > > > > > We want to create a list of column names in the pageflow scope and in > > the > > > > reusable datagrid > > > > > > > > > > > > > > > > we want to use container.item.xxxxxxxx - where xxxxx comes from the > > > column > > > > list. > > > > > > > > > > > > > > > > Is there any easy way to do this? > > > > > > > > > > > > > > [eko] I don't know why this shouldn't work, but you'll need to use the > > > appropriate JSTL tag to render all of the <netui-data:headerCell>s > > > from inside of the <netui-data:header> tag. But, I've not tried it -- > > > if you run into trouble with it, let me know. > > > > > > > > > > > -- > > > > No virus found in this outgoing message. > > > > Checked by AVG Free Edition. > > > > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: > 4/8/2006 > > > > > > > > > > > > > > > > > > -- > > > No virus found in this incoming message. > > > Checked by AVG Free Edition. > > > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 > > > > > > > > > -- > > > No virus found in this outgoing message. > > > Checked by AVG Free Edition. > > > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 > > > > > > > > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 > > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Free Edition. > > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 > > > -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.0/305 - Release Date: 4/8/2006
