Re: CachedRowset with logic:iterate tag
Subject: Re: CachedRowset with logic:iterate tag From: David Chu [EMAIL PROTECTED] === Hi, When first using struts, I first tried to use a CachedRowSet object as well. However, based on other people's recommendations, I just went with a simple Vector of Beans, one representing each row in the ResultSet. It is true this is more overhead, but no one has extended the CachedRowSet to have an iterator which is what is necessary. It is not necessary to use struts tags; you can use scriplets. But it is so nice to just use the struts tags. You can achieve almost all of the same functionality and it looks more like an html page. -david -- David C. Chu America Online Network Tools Intern -- aps olute [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... How to iterate over a CachedRowSet using logic:iterate tags? I have filled the CachedRowset with a select statement and am able to iterate using the crs.getString(1) or the crs.getString(colname) methods, but no am ready to use Struts tags but dont know how. Do I need to convert it a Collection type? but that will eat up more memory as two copies CRS and the Collection with same contents? Is it necessary to use the Struts tags to work with the rest of the Struts features? ?xml version=1.0? %@ page language=java % %@ page contentType=text/html % %@ page import=sun.jdbc.rowset.CachedRowSet,javax.naming.InitialContext% jsp:useBean id=Contacts class=sun.jdbc.rowset.CachedRowSet scope=session % InitialContext ctx = new InitialContext(); javax.sql.DataSource ds = (javax.sql.DataSource)ctx.lookup(java:/DefaultDS); java.sql.Connection con = ds.getConnection(); Contacts.setCommand(SELECT name, owner,species,sex,birth,death from pet); Contacts.execute(con); Contacts.first(); % /jsp:useBean logic:present name=Contacts property=name logic:iterate id=subs name=Contacts type=sun.jdbc.rowset.CachedRowSet bean:write name=subs property=name/ /logic:iterate /logic:present But nothing is ever printed. if i take out the logic:present and logic:iterate and replaced with a while (Contacts.next() Contacts.getString(1) at least i gets some output. __ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: CachedRowset with logic:iterate tag
Subject: Re: CachedRowset with logic:iterate tag From: Vic C. [EMAIL PROTECTED] === I have extendend and made cached row set work with the iterator. See webPIM on sourceforge, basebeans.com or downloads.com David Chu wrote: Hi, When first using struts, I first tried to use a CachedRowSet object as well. However, based on other people's recommendations, I just went with a simple Vector of Beans, one representing each row in the ResultSet. It is true this is more overhead, but no one has extended the CachedRowSet to have an iterator which is what is necessary. It is not necessary to use struts tags; you can use scriplets. But it is so nice to just use the struts tags. You can achieve almost all of the same functionality and it looks more like an html page. -david -- David C. Chu America Online Network Tools Intern -- aps olute [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... How to iterate over a CachedRowSet using logic:iterate tags? I have filled the CachedRowset with a select statement and am able to iterate using the crs.getString(1) or the crs.getString(colname) methods, but no am ready to use Struts tags but dont know how. Do I need to convert it a Collection type? but that will eat up more memory as two copies CRS and the Collection with same contents? Is it necessary to use the Struts tags to work with the rest of the Struts features? ?xml version=1.0? %@ page language=java % %@ page contentType=text/html % %@ page import=sun.jdbc.rowset.CachedRowSet,javax.naming.InitialContext% jsp:useBean id=Contacts class=sun.jdbc.rowset.CachedRowSet scope=session % InitialContext ctx = new InitialContext(); javax.sql.DataSource ds = (javax.sql.DataSource)ctx.lookup(java:/DefaultDS); java.sql.Connection con = ds.getConnection(); Contacts.setCommand(SELECT name, owner,species,sex,birth,death from pet); Contacts.execute(con); Contacts.first(); % /jsp:useBean logic:present name=Contacts property=name logic:iterate id=subs name=Contacts type=sun.jdbc.rowset.CachedRowSet bean:write name=subs property=name/ /logic:iterate /logic:present But nothing is ever printed. if i take out the logic:present and logic:iterate and replaced with a while (Contacts.next() Contacts.getString(1) at least i gets some output. __ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: CachedRowset with logic:iterate tag
You could use the forEach tag from JSTL (http://jakarta.apache.org/taglibs/doc/standard-doc/intro.html). forEach can iterate over ResultSet's (and RowSet's via inheritance) with the assistance from the helper class: javax.servlet.jsp.jstl.sql.ResultSupport . ResultSupport can convert ResultSet's to the JSTL friendly Result class. -Chad Johnson - Original Message - From: aps olute [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, July 17, 2002 6:19 PM Subject: CachedRowset with logic:iterate tag How to iterate over a CachedRowSet using logic:iterate tags? I have filled the CachedRowset with a select statement and am able to iterate using the crs.getString(1) or the crs.getString(colname) methods, but no am ready to use Struts tags but dont know how. Do I need to convert it a Collection type? but that will eat up more memory as two copies CRS and the Collection with same contents? Is it necessary to use the Struts tags to work with the rest of the Struts features? ?xml version=1.0? %@ page language=java % %@ page contentType=text/html % %@ page import=sun.jdbc.rowset.CachedRowSet,javax.naming.InitialContext% jsp:useBean id=Contacts class=sun.jdbc.rowset.CachedRowSet scope=session % InitialContext ctx = new InitialContext(); javax.sql.DataSource ds = (javax.sql.DataSource)ctx.lookup(java:/DefaultDS); java.sql.Connection con = ds.getConnection(); Contacts.setCommand(SELECT name, owner,species,sex,birth,death from pet); Contacts.execute(con); Contacts.first(); % /jsp:useBean logic:present name=Contacts property=name logic:iterate id=subs name=Contacts type=sun.jdbc.rowset.CachedRowSet bean:write name=subs property=name/ /logic:iterate /logic:present But nothing is ever printed. if i take out the logic:present and logic:iterate and replaced with a while (Contacts.next() Contacts.getString(1) at least i gets some output. __ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: CachedRowset with logic:iterate tag
Ok from what I gather from the responses, it is not necessary to use Struts Tags to iterate the contents of the CachedRowSet. However I would still like how to do this. I've looked at webPIM, and were not able to download as there are no jar files or zip files package I saw at sourceforge.net, am not about to pick bits and pieces and spend so much time putting it together, if a better download site is provided i'd apprecite it. Am still not clear if it requires a Collection type to do any of these iterations, not just logic, but in html: tags too and what have you. aps __ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
