Wiki source code of IRC Archive for channel #xwiki
Last modified by Vincent Massol on 2012/10/18 18:38
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| author | version | line-number | content |
|---|---|---|---|
| 1 | npm left at 01:31 ("Leaving." | ||
| 2 | CalebJamesDeLisl joined #xwiki at 03:19 | ||
| 3 | SvenDowideit left at 03:50 (Read error: 60 (Operation timed out) | ||
| 4 | sunny_slls joined #xwiki at 04:36 | ||
| 5 | CalebJamesDeLisl - (04:57): Hi sunny_slls, sorry I wasn't available earlier, had to catch some sleep. | ||
| 6 | sunny_slls - (05:08): hi CalebJamesDeLisl | ||
| 7 | sunny_slls - (05:08): CalebJamesDeLisl, sorry for responding late | ||
| 8 | CalebJamesDeLisl - (05:08): How is the scripting going? | ||
| 9 | sunny_slls - (05:08): CalebJamesDeLisl, come on don't embarrass me ..don't say sorry | ||
| 10 | sunny_slls - (05:08): CalebJamesDeLisl, working on it | ||
| 11 | sunny_slls - (05:09): i am on the verge of finishing it | ||
| 12 | CalebJamesDeLisl - (05:09): "don't embarrass me" haha, I was in bed until about 1/2 hour ago. | ||
| 13 | sunny_slls - (05:09): CalebJamesDeLisl, what time is it now there? | ||
| 14 | CalebJamesDeLisl - (05:10): 11PM, I have a weird sleep schedule. | ||
| 15 | sunny_slls - (05:10): CalebJamesDeLisl, so soon you must be going to sleep soon | ||
| 16 | CalebJamesDeLisl - (05:11): Not until tomorrow some time. | ||
| 17 | sunny_slls - (05:11): haha | ||
| 18 | sunny_slls - (05:11): CalebJamesDeLisl, ok give me sometime so that i finish the script | ||
| 19 | sunny_slls - (05:11): its very bad to extend it | ||
| 20 | CalebJamesDeLisl - (05:12): Have you done much with querying the database? $xwiki.searchDocuments( ? | ||
| 21 | sunny_slls - (05:12): nope | ||
| 22 | CalebJamesDeLisl - (05:12): Once you get the hang of velocity itself, you can have a lot of fun running searches and creating output. | ||
| 23 | sunny_slls - (05:13): ok | ||
| 24 | sunny_slls - (05:13): so hang on for half an hour till i finish it | ||
| 25 | CalebJamesDeLisl - (05:13): If you need any help, you can post your script on pastebin and I can look at it. | ||
| 26 | sunny_slls - (05:13): and then we will have scripting fun together | ||
| 27 | sunny_slls - (05:13): :) | ||
| 28 | sunny_slls - (05:13): thanks | ||
| 29 | sunny_slls - (05:14): CalebJamesDeLisl, that was very kind and supporting of you | ||
| 30 | sunny_slls - (05:14): :) | ||
| 31 | sunny_slls - (05:14): CalebJamesDeLisl, by the way you are studying in which semester? | ||
| 32 | CalebJamesDeLisl - (05:14): No problem. | ||
| 33 | CalebJamesDeLisl - (05:15): No college for me, I'm studying the XWiki core. | ||
| 34 | sunny_slls - (05:15): ok, so seaching for job which all people do after completing college stuffs? | ||
| 35 | CalebJamesDeLisl - (05:16): Something like that. | ||
| 36 | sunny_slls - (05:16): so do you get paid for working for xwiki core | ||
| 37 | sunny_slls - (05:16): ? | ||
| 38 | CalebJamesDeLisl - (05:17): There has been some talk about it, we will see. | ||
| 39 | sunny_slls - (05:17): ok | ||
| 40 | sunny_slls - (05:17): CalebJamesDeLisl, i too like to work with corejava :) | ||
| 41 | sunny_slls - (05:18): CalebJamesDeLisl, ok i will catch you later ..lets get back to velocity stuff | ||
| 42 | CalebJamesDeLisl - (05:18): Enjoy. | ||
| 43 | sunny_slls - (05:36): CalebJamesDeLisl, http://pastebin.com/m6cb9a89b | ||
| 44 | sunny_slls - (05:37): Key: $key -> Value: $allProducts.get($key) please explain this statement | ||
| 45 | sunny_slls - (05:38): ? | ||
| 46 | CalebJamesDeLisl - (05:39): Should I give you the equivalent java code? | ||
| 47 | CalebJamesDeLisl - (05:40): if $allProducts is a Map and $key is a key in that map, then it will output "Key: (the key) -> Value: (the corresponding value) | ||
| 48 | CalebJamesDeLisl - (05:40): " | ||
| 49 | CalebJamesDeLisl - (05:42): You understand that "#foreach( $key in $allProducts.keySet() )" will give you a loop and set $key to each key in the Map $allProducts right? | ||
| 50 | sunny_slls - (05:43): if i say that allproducts.get($key) method retrieves the key to all the products and the value is stored in the "Value" and $key points out to the value in "Value" | ||
| 51 | sunny_slls - (05:43): is that right ? | ||
| 52 | CalebJamesDeLisl - (05:43): Yes. | ||
| 53 | sunny_slls - (05:43): ok | ||
| 54 | CalebJamesDeLisl - (05:43): Are you familiar with the Map interface? | ||
| 55 | sunny_slls - (05:44): in java right? | ||
| 56 | CalebJamesDeLisl - (05:44): Yes. | ||
| 57 | sunny_slls - (05:45): yes i am familiar with it but never used it | ||
| 58 | sunny_slls - (05:45): little familiar with hashMap | ||
| 59 | CalebJamesDeLisl - (05:45): It will help to understand that all Velocity code is compiled into Java code. You are programming Java with different commands. | ||
| 60 | sunny_slls - (05:46): ok | ||
| 61 | CalebJamesDeLisl - (05:46): Yes, HashMap is a type of Map. | ||
| 62 | sunny_slls - (05:47): there are packages in java which contains these in-build methods, does velocity also have such kind of packages which are imported? | ||
| 63 | CalebJamesDeLisl - (05:48): In velocity you can't call "import java.lang.SomePackage" and that makes it more secure. | ||
| 64 | sunny_slls - (05:48): ok i will come on this later | ||
| 65 | CalebJamesDeLisl - (05:49): Have you tried running the code you showed me? | ||
| 66 | sunny_slls - (05:50): nope | ||
| 67 | sunny_slls - (05:50): wait | ||
| 68 | SvenDowideit joined #xwiki at 05:53 | ||
| 69 | sunny_slls - (07:05): CalebJamesDeLisl, http://pastebin.com/m7fb68dab | ||
| 70 | sunny_slls - (07:05): #set($dynamicsource = "$source$select") | ||
| 71 | CalebJamesDeLisl - (07:06): In java that would be String dynamicsource = source + select; | ||
| 72 | sunny_slls - (07:07): but the variable which contains the value is $source1 not $source | ||
| 73 | sunny_slls - (07:07): and why the value on is not showing since it should be concatenated with "abc" | ||
| 74 | sunny_slls - (07:08): i mean value of the $select which is 1 here | ||
| 75 | CalebJamesDeLisl - (07:08): Looks like you found a mistake in the Velocity documentation :) | ||
| 76 | sunny_slls - (07:08): no its not a mistake | ||
| 77 | sunny_slls - (07:09): when i run the code it is running correctly withour any error or exception | ||
| 78 | sunny_slls - (07:09): *without | ||
| 79 | CalebJamesDeLisl - (07:09): if $source is not defined (and it isn't in the example) Velocity defaults to: "String dynamicsource = "$source" + select; | ||
| 80 | CalebJamesDeLisl - (07:09): " | ||
| 81 | sunny_slls - (07:10): source is defined | ||
| 82 | CalebJamesDeLisl - (07:10): Oh I though only $source1 was defined. | ||
| 83 | sunny_slls - (07:10): oh sorry | ||
| 84 | sunny_slls - (07:10): my mistake | ||
| 85 | sunny_slls - (07:11): but then how come its taking the value of $source1 in $source? | ||
| 86 | CalebJamesDeLisl - (07:11): It shouldn't be. | ||
| 87 | sunny_slls - (07:12): err | ||
| 88 | CalebJamesDeLisl - (07:12): or. | ||
| 89 | sunny_slls - (07:13): according to my logic the value of the $source1= "abc" and $select = 1 , so the output of the concatenated value should be $source$select = abc1 | ||
| 90 | sunny_slls - (07:13): but its not coming like that | ||
| 91 | CalebJamesDeLisl - (07:14): Let me guess, it comes out to "abc" | ||
| 92 | sunny_slls - (07:15): yes | ||
| 93 | CalebJamesDeLisl - (07:16): Welcome to the land of metaprogramming :) | ||
| 94 | sunny_slls - (07:16): without quotes | ||
| 95 | sunny_slls - (07:16): gosh~! | ||
| 96 | CalebJamesDeLisl - (07:16): Here's what happens | ||
| 97 | sunny_slls - (07:16): haha | ||
| 98 | CalebJamesDeLisl - (07:17): $source$select converts to java: String sourceselect = "$source" + select; | ||
| 99 | sunny_slls - (07:18): ok | ||
| 100 | CalebJamesDeLisl - (07:18): that means that sourceselect = "$source1" | ||
| 101 | CalebJamesDeLisl - (07:18): then it parses it again and says Ah hah: $sourceselect = $source1 | ||
| 102 | CalebJamesDeLisl - (07:18): thus $sourceselect = abc | ||
| 103 | CalebJamesDeLisl - (07:19): which is the value of $source1 | ||
| 104 | CalebJamesDeLisl - (07:19): You have written a program which writes a program, congratulations. | ||
| 105 | sunny_slls - (07:22): well its not so clear to me | ||
| 106 | CalebJamesDeLisl - (07:22): $source$select converts to java: String sourceselect = "$source" + select; | ||
| 107 | sunny_slls - (07:22): ok | ||
| 108 | sunny_slls - (07:23): but how sourceselect = "$source1" ? | ||
| 109 | CalebJamesDeLisl - (07:23): which is interpreted as: String sourceselect = "$source" + "1"; | ||
| 110 | CalebJamesDeLisl - (07:23): because $select = 1 | ||
| 111 | CalebJamesDeLisl - (07:24): when java executes that line, it becomes: String sourceselect = "$source1"; | ||
| 112 | sunny_slls - (07:24): got it | ||
| 113 | sunny_slls - (07:25): ya now its clear | ||
| 114 | sunny_slls - (07:25): thanks | ||
| 115 | CalebJamesDeLisl - (07:25): Funny when you actually see what's happening isn't it? | ||
| 116 | sunny_slls - (07:25): ya its a bit weird | ||
| 117 | CalebJamesDeLisl - (07:25): Now lets see if we can overflow the stack :) | ||
| 118 | sunny_slls - (07:26): ok | ||
| 119 | CalebJamesDeLisl - (07:26): With a recursive call which never solves. | ||
| 120 | CalebJamesDeLisl - (07:26): Not a security issue but it's fun. | ||
| 121 | sunny_slls - (07:27): ok | ||
| 122 | sunny_slls - (07:39): when i am declaring a macro then it is giving an error | ||
| 123 | sunny_slls - (07:39): #macro( d ) | ||
| 124 | sunny_slls - (07:41): CalebJamesDeLisl, ? | ||
| 125 | CalebJamesDeLisl - (07:42): What kind of error is it? | ||
| 126 | sunny_slls - (07:42): http://pastebin.com/m4830d201 | ||
| 127 | CalebJamesDeLisl - (07:43): Macros have to end with #end | ||
| 128 | CalebJamesDeLisl - (07:43): here are some examples of macros | ||
| 129 | CalebJamesDeLisl - (07:44): http://svn.xwiki.org/svnroot/xwiki/platform/web/trunk/standard/src/main/webapp/templates/macros.vm | ||
| 130 | CalebJamesDeLisl - (07:44): BTW: These macros are all available for you to use while coding. | ||
| 131 | sunny_slls - (07:44): ya | ||
| 132 | sunny_slls - (07:44): got it | ||
| 133 | CalebJamesDeLisl - (08:03): Hey sunny... | ||
| 134 | sunny_slls is now known as sunny_slls|away ([email protected] | ||
| 135 | sunny_slls|away is now known as sunny_slls ([email protected] | ||
| 136 | sunny_slls left at 09:34 ("Leaving" | ||
| 137 | A-Kaser joined #xwiki at 11:33 | ||
| 138 | bougie joined #xwiki at 13:58 | ||
| 139 | bougie left #xwiki at 13:58 | ||
| 140 | sunny_slls joined #xwiki at 14:46 | ||
| 141 | sunny_slls - (14:47): hello everybody | ||
| 142 | CalebJamesDeLisl - (14:57): Hi sunny | ||
| 143 | sunny_slls - (15:26): CalebJamesDeLisl, http://pastebin.com/mc74c2a0 | ||
| 144 | sunny_slls - (15:26): please explain me this | ||
| 145 | CalebJamesDeLisl - (15:26): ? | ||
| 146 | sunny_slls - (15:27): CalebJamesDeLisl, http://pastebin.com/mc74c2a0 | ||
| 147 | CalebJamesDeLisl - (15:27): It should output ${my:invalid:non:reference} I think | ||
| 148 | sunny_slls - (15:27): its giving an error | ||
| 149 | sunny_slls - (15:28): http://pastebin.com/m44263ddd | ||
| 150 | sunny_slls - (15:28): here is the error | ||
| 151 | CalebJamesDeLisl - (15:30): You could try #set($d = '${') then you would be able to say ${d}my:invalid... | ||
| 152 | sunny_slls - (15:31): i can't get the concept of what is it trying to do | ||
| 153 | sunny_slls - (15:31): please explain | ||
| 154 | CalebJamesDeLisl - (15:31): What they are teaching is how to say things on your web page which Velocity wants to parse as syntax. | ||
| 155 | sunny_slls - (15:31): ok | ||
| 156 | sunny_slls - (15:32): one question | ||
| 157 | sunny_slls - (15:32): $s = ${s} is the same thing? | ||
| 158 | CalebJamesDeLisl - (15:32): yes $s is the same as ${s} | ||
| 159 | CalebJamesDeLisl - (15:33): but $sammy is not the same as ${s}ammy | ||
| 160 | sunny_slls - (15:33): yes | ||
| 161 | CalebJamesDeLisl - (15:33): You use the {} to stop it from trying interpret a bigger block of text as a variable | ||
| 162 | sunny_slls - (15:34): so here when it is writing ${D}{my:invalid:non:reference} it should give {my:invalid:non:reference}{my:invalid:non:reference} | ||
| 163 | sunny_slls - (15:35): since $D = "$" | ||
| 164 | CalebJamesDeLisl - (15:37): No ${D} resolves to '$' so you get ${my:invalid:non:ref} | ||
| 165 | sunny_slls - (15:38): oh its in single quotes | ||
| 166 | sunny_slls - (15:38): for double quotes my answer is right | ||
| 167 | CalebJamesDeLisl - (15:39): I don't see how ${D} ever resolves to {my:invalid:non:reference} | ||
| 168 | CalebJamesDeLisl - (15:40): The main difference between ' and " is that things inside of ' are not allowed to be parsed. | ||
| 169 | sunny_slls - (15:40): yes | ||
| 170 | sunny_slls - (15:40): that is what i am saying | ||
| 171 | sunny_slls - (15:41): for "" the $D get parsed to {my:invalid:non:reference} | ||
| 172 | sunny_slls - (15:41): but for ' it is not parsed and gives $ | ||
| 173 | sunny_slls - (15:41): thanks | ||
| 174 | sunny_slls - (15:42): can you give me some link of website that are made from velocity? | ||
| 175 | CalebJamesDeLisl - (15:43): I don't know, you'd have to for references on the Velocity website. | ||
| 176 | CalebJamesDeLisl - (15:43): BTW: I found the problem with your code. | ||
| 177 | CalebJamesDeLisl - (15:43): First line is an example. | ||
| 178 | CalebJamesDeLisl - (15:44): Remove it and it works fine :) | ||
| 179 | sunny_slls - (15:44): ok | ||
| 180 | sunny_slls - (15:45): yes it worls | ||
| 181 | sunny_slls - (15:45): *works | ||
| 182 | sunny_slls - (16:01): CalebJamesDeLisl, please tell me about the \\ character | ||
| 183 | sunny_slls - (16:02): getting little confused | ||
| 184 | CalebJamesDeLisl - (16:02): Where are you using it? | ||
| 185 | sunny_slls - (16:03): #set( $foo = "bar" ) | ||
| 186 | sunny_slls - (16:03): $\!foo | ||
| 187 | sunny_slls - (16:03): $\!{foo} | ||
| 188 | sunny_slls - (16:03): $\\!foo | ||
| 189 | sunny_slls - (16:03): $\\\!foo | ||
| 190 | CalebJamesDeLisl - (16:04): if you say $x and $x = 'blah' then you will output 'blah' | ||
| 191 | CalebJamesDeLisl - (16:04): so you can say \$x and the output will be '$x' | ||
| 192 | sunny_slls - (16:04): ok | ||
| 193 | sunny_slls - (16:05): \\$!foo will be ? | ||
| 194 | CalebJamesDeLisl - (16:05): one backslash "escapes" the character in front of it making it not parsed. | ||
| 195 | sunny_slls - (16:05): ok | ||
| 196 | CalebJamesDeLisl - (16:06): But backslashes can also escape themselves so \\ will output '\' | ||
| 197 | sunny_slls - (16:06): ok | ||
| 198 | sunny_slls - (16:06): got it | ||
| 199 | CalebJamesDeLisl - (16:07): so if $x = 'blah' then \$x will output '$x' but \\$x will output '\blah' | ||
| 200 | sunny_slls - (16:07): what is the difference in between $\\x and \\$x | ||
| 201 | sunny_slls - (16:07): means $//x means? | ||
| 202 | CalebJamesDeLisl - (16:08): I think $\\x will output '$\x' because \ can't be used in a variable name so it assumes you literally mean to put the $ there. | ||
| 203 | sunny_slls - (16:09): got it | ||
| 204 | sunny_slls - (16:11): CalebJamesDeLisl, well now i am done with velocity ... | ||
| 205 | CalebJamesDeLisl - (16:11): Well now you get to use velocity to call functions in the core. | ||
| 206 | sunny_slls - (16:12): ok | ||
| 207 | sunny_slls - (16:12): so what i should do now? | ||
| 208 | CalebJamesDeLisl - (16:13): This page is a good read: http://platform.xwiki.org/xwiki/bin/view/DevGuide/Scripting | ||
| 209 | CalebJamesDeLisl - (16:13): You have a lot of things available to you such as the core XWiki object which is bound to the variable $xwiki | ||
| 210 | CalebJamesDeLisl - (16:14): The current document is $doc | ||
| 211 | CalebJamesDeLisl - (16:14): you can get the name of the current document with $doc.getName() | ||
| 212 | sunny_slls - (16:14): ok | ||
| 213 | CalebJamesDeLisl - (16:15): If you are used to Java then the hard part is over, the rest is all calling Java methods. | ||
| 214 | sunny_slls - (16:15): yes i am used to java | ||
| 215 | sunny_slls - (16:16): except the collection framework part is incomplete | ||
| 216 | sunny_slls - (16:18): there are specifications for each language . do i have to know them all | ||
| 217 | CalebJamesDeLisl - (16:18): You follow tutorials very carefully. | ||
| 218 | sunny_slls - (16:18): since i don't have any idea about groovy | ||
| 219 | CalebJamesDeLisl - (16:18): I usually just scan over the headlines and then come back later if I have a problem. | ||
| 220 | sunny_slls - (16:18): ok | ||
| 221 | CalebJamesDeLisl - (16:19): Javadoc is very cool for looking stuff up. | ||
| 222 | sunny_slls - (16:19): well but i can see a lot of use of groovy | ||
| 223 | CalebJamesDeLisl - (16:19): Groovy is easy, it's just java but you don't need to define a class or main method, it runs like a script. | ||
| 224 | sunny_slls - (16:19): ok | ||
| 225 | CalebJamesDeLisl - (16:20): Groovy also has some serious security problems. | ||
| 226 | sunny_slls - (16:20): ok | ||
| 227 | CalebJamesDeLisl - (16:20): XWiki only allows groovy to be written by users who have programming rights. | ||
| 228 | sunny_slls - (16:21): ok | ||
| 229 | sunny_slls - (16:21): CalebJamesDeLisl, let me read this doc...then i would come to you later | ||
| 230 | CalebJamesDeLisl - (16:21): ok. | ||
| 231 | sunny_slls - (16:22): btw i have to go for dinner | ||
| 232 | sunny_slls - (16:22): its already 9:00pm | ||
| 233 | sunny_slls - (16:22): see ya later | ||
| 234 | sunny_slls is now known as sunny_slls|away ([email protected] | ||
| 235 | sunny_slls|away is now known as sunny_slls ([email protected] | ||
| 236 | sunny_slls left at 19:24 ("Leaving" | ||
| 237 | A-Kaser left at 19:25 (""Soyons réalistes, exigeons l'impossible." Ché Guevara" | ||
| 238 | CalebJamesDeLisl left at 19:32 ("Off to bed." | ||
| 239 | lucaa joined #xwiki at 22:02 | ||
| 240 | SvenDowiu joined #xwiki at 22:36 | ||
| 241 | SvenDowideit left at 22:50 (Read error: 110 (Connection timed out) | ||
| 242 | SvenDowiu is now known as SvenDowideit ([email protected] | ||
| 243 | lucaa left #xwiki at 23:08 |
