RE: addition of lists
Hey Sergiu! A big pleasure to meet you here! Thanks for your answer. Please, see below... From: Sergiu Dumitriu [sergiu.dumit...@gmail.com] Sent: 24 May 2013 19:54 To: user@velocity.apache.org Subject: Re: addition of lists On 05/24/2013 01:50 PM, ricardo.julio.rodriguez.fernan...@sergas.es wrote: Hi! Probably I'll use the wrong semantic, but I'll try to explain the very simple result I want to get with Velocity: given two lists of results, let's me call them $list1 and $list2, I want to get a new list, let's call it $listTotal, including all item in $list1 and $list2. Please, how could I do that? What is the correct expression I must it in Velocity's World for his operation? Thank you so much for your help! Ricardo Hey Ricardo, If those are indeed lists, they should support all the methods that Java's List class provides [1], including addAll [2], so this should work: #set ($listTotal = []) #set ($discard = $listTotal.addAll($list1)) #set ($discard = $listTotal.addAll($list2)) It worked! They are indeed lists :-) But I've not a clear idea yet about what is list, what an array, what a collection, what any sort of collection... Please, could you provide me a good reference to keep trying to understand what I feel like a must to leverage the power of Velocity and, of course, the nice team XWiki/Velocity? These two lists come from a for you well known lines of code. Something like this... #set ($xwqlquery = where doc.translation = 0 and doc.creationDate '2013-01-01' and doc.parent like '%$doc.title%' and doc.fullName NOT IN ($nicestr0) order by doc.object(XWiki.XWikiUsers).last_name) #set ($results = $services.query.xwql($xwqlquery).execute()) Please, is it possible to check $results if is it a list? For instance, I guessed it is a list because I can apply size() to it. Is this a right guess? Thank you so much for your help! [1] http://docs.oracle.com/javase/1.5.0/docs/api/java/util/List.html [2] http://docs.oracle.com/javase/1.5.0/docs/api/java/util/List.html#addAll%28java.util.Collection%29 Thanks! -- Sergiu Dumitriu http://purl.org/net/sergiu Nota: A información contida nesta mensaxe e os seus posibles documentos adxuntos é privada e confidencial e está dirixida únicamente ó seu destinatario/a. Se vostede non é o/a destinatario/a orixinal desta mensaxe, por favor elimínea. A distribución ou copia desta mensaxe non está autorizada. Nota: La información contenida en este mensaje y sus posibles documentos adjuntos es privada y confidencial y está dirigida únicamente a su destinatario/a. Si usted no es el/la destinatario/a original de este mensaje, por favor elimínelo. La distribución o copia de este mensaje no está autorizada. See more languages: http://www.sergas.es/aviso_confidencialidad.htm
Re: addition of lists
On 05/24/2013 02:37 PM, ricardo.julio.rodriguez.fernan...@sergas.es wrote: Hey Sergiu! A big pleasure to meet you here! Thanks for your answer. Please, see below... From: Sergiu Dumitriu [sergiu.dumit...@gmail.com] Sent: 24 May 2013 19:54 To: user@velocity.apache.org Subject: Re: addition of lists On 05/24/2013 01:50 PM, ricardo.julio.rodriguez.fernan...@sergas.es wrote: Hi! Probably I'll use the wrong semantic, but I'll try to explain the very simple result I want to get with Velocity: given two lists of results, let's me call them $list1 and $list2, I want to get a new list, let's call it $listTotal, including all item in $list1 and $list2. Please, how could I do that? What is the correct expression I must it in Velocity's World for his operation? Thank you so much for your help! Ricardo Hey Ricardo, If those are indeed lists, they should support all the methods that Java's List class provides [1], including addAll [2], so this should work: #set ($listTotal = []) #set ($discard = $listTotal.addAll($list1)) #set ($discard = $listTotal.addAll($list2)) It worked! They are indeed lists :-) But I've not a clear idea yet about what is list, what an array, what a collection, what any sort of collection... Please, could you provide me a good reference to keep trying to understand what I feel like a must to leverage the power of Velocity and, of course, the nice team XWiki/Velocity? These two lists come from a for you well known lines of code. Something like this... #set ($xwqlquery = where doc.translation = 0 and doc.creationDate '2013-01-01' and doc.parent like '%$doc.title%' and doc.fullName NOT IN ($nicestr0) order by doc.object(XWiki.XWikiUsers).last_name) #set ($results = $services.query.xwql($xwqlquery).execute()) Please, is it possible to check $results if is it a list? For instance, I guessed it is a list because I can apply size() to it. Is this a right guess? You can always check the actual class of a variable with: $var.class This will print the classname, which will correspond to a real Java class (most likely an ArrayList). You can then look up that class in your favorite Java IDE and look at its hierarchy: which interfaces does it implement (List, Set or Map), what methods does it have, etc. One exception is that arrays (like String[]) are treated as lists by Velocity, so they will also support all the List methods, even though in Java they don't. Thank you so much for your help! [1] http://docs.oracle.com/javase/1.5.0/docs/api/java/util/List.html [2] http://docs.oracle.com/javase/1.5.0/docs/api/java/util/List.html#addAll%28java.util.Collection%29 Thanks! -- Sergiu Dumitriu http://purl.org/net/sergiu - To unsubscribe, e-mail: user-unsubscr...@velocity.apache.org For additional commands, e-mail: user-h...@velocity.apache.org
