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  • How to rename an existing Grails application

    - by Johan Pelgrim
    Hi there, Does anybody know how to (easily) "rename" an existing grails application? I'm running into this because my PaaS provider does not allow me to delete a subscription... So I want to deploy my application under a different name. Of course, I can do this manually, but I think it might be a useful 'top-level' script (i.e. "grails rename-app newappname") Manual hints: When I do a "grails create-app myappname" I can see the myappname exists in the following files (and filenames)... Of course this is done by the create-app script, which replaces @...@ tokens in the template. I guess once they are replaced, it's not trivial to do a rename. ./.project: <name>myappname</name> ./application.properties:app.name=myappname ./build.xml:<project xmlns:ivy="antlib:org.apache.ivy.ant" name="myappname" default="test"> ./ivy.xml: <info organisation="org.example" module="myappname"/> ./myappname-test.launch:<stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="myappname"/> ./myappname.launch:<listEntry value="/myappname"/> ./myappname.launch:<listEntry value="<?xml version="1.0" encoding="UTF-8"?> <runtimeClasspathEntry containerPath="org.eclipse.jdt.launching.JRE_CONTAINER" javaProject="myappname" path="1" type="4"/> "/> ./myappname.launch:<stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="myappname"/> ./myappname.launch:<stringAttribute key="org.eclipse.jdt.launching.VM_ARGUMENTS" value="-Dbase.dir="${project_loc:myappname}" -Dserver.port=8080 -Dgrails.env=development"/> ./myappname.tmproj: <string>myappname.launch</string> And of course... the top-level directory name is "myappname" Any hints, or information about ongoing initiatives in this area are welcome Greetz, Johan

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  • Grails many to many using a third 'join' class

    - by andy mccullough
    I read that a m:m relationship often means there is a third class that isn't yet required. So I have m:m on User and Project, and I created a third domain class, ProjectMembership The three domains are as follows (minimized for illustration purposes): User class User { String name static hasMany = [projectMemberships : ProjectMembership] } Project Membership class ProjectMembership { static constraints = { } static belongsTo = [user:User, project:Project] } Project: class Project { String name static hasMany = [projectMemberships : ProjectMembership] static constraints = { } } If I have the ID of the user, how can I get a list of Project objects that they are assigned to?

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  • ASP.NET JavaScript Routing for ASP.NET MVC–Constraints

    - by zowens
    If you haven’t had a look at my previous post about ASP.NET routing, go ahead and check it out before you read this post: http://weblogs.asp.net/zowens/archive/2010/12/20/asp-net-mvc-javascript-routing.aspx And the code is here: https://github.com/zowens/ASP.NET-MVC-JavaScript-Routing   Anyways, this post is about routing constraints. A routing constraint is essentially a way for the routing engine to filter out route patterns based on the day from the URL. For example, if I have a route where all the parameters are required, I could use a constraint on the required parameters to say that the parameter is non-empty. Here’s what the constraint would look like: Notice that this is a class that inherits from IRouteConstraint, which is an interface provided by System.Web.Routing. The match method returns true if the value is a match (and can be further processed by the routing rules) or false if it does not match (and the route will be matched further along the route collection). Because routing constraints are so essential to the route matching process, it was important that they be part of my JavaScript routing engine. But the problem is that we need to somehow represent the constraint in JavaScript. I made a design decision early on that you MUST put this constraint into JavaScript to match a route. I didn’t want to have server interaction for the URL generation, like I’ve seen in so many applications. While this is easy to maintain, it causes maintenance issues in my opinion. So the way constraints work in JavaScript is that the constraint as an object type definition is set on the route manager. When a route is created, a new instance of the constraint is created with the specific parameter. In its current form the constraint function MUST return a function that takes the route data and will return true or false. You will see the NotEmpty constraint in a bit. Another piece to the puzzle is that you can have the JavaScript exist as a string in your application that is pulled in when the routing JavaScript code is generated. There is a simple interface, IJavaScriptAddition, that I have added that will be used to output custom JavaScript. Let’s put it all together. Here is the NotEmpty constraint. There’s a few things at work here. The constraint is called “notEmpty” in JavaScript. When you add the constraint to a parameter in your C# code, the route manager generator will look for the JsConstraint attribute to look for the name of the constraint type name and fallback to the class name. For example, if I didn’t apply the “JsConstraint” attribute, the constraint would be called “NotEmpty”. The JavaScript code essentially adds a function to the “constraintTypeDefs” object on the “notEmpty” property (this is how constraints are added to routes). The function returns another function that will be invoked with routing data. Here’s how you would use the NotEmpty constraint in C# and it will work with the JavaScript routing generator. The only catch to using route constraints currently is that the following is not supported: The constraint will work in C# but is not supported by my JavaScript routing engine. (I take pull requests so if you’d like this… go ahead and implement it).   I just wanted to take this post to explain a little bit about the background on constraints. I am looking at expanding the current functionality, but for now this is a good start. Thanks for all the support with the JavaScript router. Keep the feedback coming!

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  • SQL Constraints &ndash; CHECK and NOCHECK

    - by David Turner
    One performance issue i faced at a recent project was with the way that our constraints were being managed, we were using Subsonic as our ORM, and it has a useful tool for generating your ORM code called SubStage – once configured, you can regenerate your DAL code easily based on your database schema, and it can even be integrated into your build as a pre-build event if you want to do this.  SubStage also offers the useful feature of being able to generate DDL scripts for your entire database, and can script your data for you too. The problem came when we decided to use the generate scripts feature to migrate the database onto a test database instance – it turns out that the DDL scripts that it generates include the WITH NOCHECK option, so when we executed them on the test instance, and performed some testing, we found that performance wasn’t as expected. A constraint can be disabled, enabled but not trusted, or enabled and trusted.  When it is disabled, data can be inserted that violates the constraint because it is not being enforced, this is useful for bulk load scenarios where performance is important.  So what does it mean to say that a constraint is trusted or not trusted?  Well this refers to the SQL Server Query Optimizer, and whether it trusts that the constraint is valid.  If it trusts the constraint then it doesn’t check it is valid when executing a query, so the query can be executed much faster. Here is an example base in this article on TechNet, here we create two tables with a Foreign Key constraint between them, and add a single row to each.  We then query the tables: 1 DROP TABLE t2 2 DROP TABLE t1 3 GO 4 5 CREATE TABLE t1(col1 int NOT NULL PRIMARY KEY) 6 CREATE TABLE t2(col1 int NOT NULL) 7 8 ALTER TABLE t2 WITH CHECK ADD CONSTRAINT fk_t2_t1 FOREIGN KEY(col1) 9 REFERENCES t1(col1) 10 11 INSERT INTO t1 VALUES(1) 12 INSERT INTO t2 VALUES(1) 13 GO14 15 SELECT COUNT(*) FROM t2 16 WHERE EXISTS17 (SELECT *18 FROM t1 19 WHERE t1.col1 = t2.col1) This all works fine, and in this scenario the constraint is enabled and trusted.  We can verify this by executing the following SQL to query the ‘is_disabled’ and ‘is_not_trusted’ properties: 1 select name, is_disabled, is_not_trusted from sys.foreign_keys This gives the following result: We can disable the constraint using this SQL: 1 alter table t2 NOCHECK CONSTRAINT fk_t2_t1 And when we query the constraints again, we see that the constraint is disabled and not trusted: So the constraint won’t be enforced and we can insert data into the table t2 that doesn’t match the data in t1, but we don’t want to do this, so we can enable the constraint again using this SQL: 1 alter table t2 CHECK CONSTRAINT fk_t2_t1 But when we query the constraints again, we see that the constraint is enabled, but it is still not trusted: This means that the optimizer will check the constraint each time a query is executed over it, which will impact the performance of the query, and this is definitely not what we want, so we need to make the constraint trusted by the optimizer again.  First we should check that our constraints haven’t been violated, which we can do by running DBCC: 1 DBCC CHECKCONSTRAINTS (t2) Hopefully you see the following message indicating that DBCC completed without finding any violations of your constraint: Having verified that the constraint was not violated while it was disabled, we can simply execute the following SQL:   1 alter table t2 WITH CHECK CHECK CONSTRAINT fk_t2_t1 At first glance this looks like it must be a typo to have the keyword CHECK repeated twice in succession, but it is the correct syntax and when we query the constraints properties, we find that it is now trusted again: To fix our specific problem, we created a script that checked all constraints on our tables, using the following syntax: 1 ALTER TABLE t2 WITH CHECK CHECK CONSTRAINT ALL

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  • Using Constraints on Hierarchical Data in a Self-Referential Table

    - by pbarney
    Suppose you have the following table, intended to represent hierarchical data: +--------+-------------+ | Field | Type | +--------+-------------+ | id | int(10) | | parent | int(10) | | name | varchar(45) | +--------+-------------+ The table is self-referential in that the parent_id refers to id. So you might have the following data: +----+--------+---------------+ | id | parent | name | +----+--------+---------------+ | 1 | 0 | fruit | | 2 | 0 | vegetable | | 3 | 1 | apple | | 4 | 1 | orange | | 5 | 3 | red delicious | | 6 | 3 | granny smith | | 7 | 3 | gala | +----+--------+---------------+ Using MySQL, I am trying to impose a (self-referential) foreign key constraint upon the data to update on cascades and prevent deletion of fruit if they have "children." So I used the following: CREATE TABLE `idtlp_main`.`fruit` ( `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, `parent` INT(10) UNSIGNED, `name` VARCHAR(45) NOT NULL, PRIMARY KEY (`id`), CONSTRAINT `fk_parent` FOREIGN KEY (`parent`) REFERENCES `fruit` (`id`) ON UPDATE CASCADE ON DELETE RESTRICT ) ENGINE = InnoDB; From what I understand, this should fit my requirements. (And parent must default to null to allow insertions, correct?) The problem is, if I change the id of a record, it will not cascade: Cannot delete or update a parent row: a foreign key constraint fails (`iddoc_main`.`fruit`, CONSTRAINT `fk_parent` FOREIGN KEY (`parent`) REFERENCES `fruit` (`id`) ON UPDATE CASCADE) What am I missing? Feel free to correct me if my terminology is screwed up... I'm new to constraints.

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  • Enforcing Constraints Upon Data Documents of Various Formats

    - by Christopher Berman
    This seems like the sort of problem that must have been solved elegantly long ago, but I haven't the foggiest how to google it and find it. Suppose you're maintaining a large legacy system, which has a large collection of data (tens of GB) of various formats, including XML and two different internal configuration formats. Suppose further that there are abstract rules governing the values these files may or may not contain. EXAMPLE: File A defines the raw, mathematical data pertaining to the aerodynamics of a car for consumption of the physics component of the system. File B contains certain values from File A in an easily accessible, XML hierarchy for consumption of a different component of the system. There exists, therefore, an abstract rule (or constraint) such that the values from File B must match the values from File A. This is probably the simplest constraint that can be specified, but in practice, the constraints between files can become very complicated indeed. What is the best method for managing these constraints between files of arbitrary formats, short of migrating it over to an RDBMS (which simply isn't feasible for the foreseeable future)? Has this problem been solved already? To be more specific, I would expect the solution to at least produce notifications of violated constraints; the solution need not resolve the constraints. ============================== Sample file structures File A (JeepWrangler2011.emv): MODEL JeepWrangler2011 { EsotericMathValueX 11.1 EsotericMathValueY 22.2 EsotericMathValueZ 33.3 } File B (JeepWrangler2011.xml): <model name="JeepWrangler2011"> <!--These values must correspond File A's EsotericMathValues--> <modelExtent x="11.1" y="22.2" z="33.3"/> [...] </model>

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  • Maven grails plugin issue

    - by Jack
    I'm trying to create the pom for an existing grails project via: mvn grails:create-pom -Dourcompany.com Now, we have our maven repository available in a local nexus repo: http://ourcompany.com/nexus But when i run the above, i get the below error Downloading: http://ourcompany.com/nexus/content/groups/public/ourcompany/com/hibernate-core/3.3.1.GA/hibernate-core-3.3.1.GA.jar [INFO] Unable to find resource 'ourcompany.com:hibernate-core:jar:3.3.1.GA' in repository central (http://repo1.maven.org/maven2) [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR But it is in there at simply: http://ourcompany.com/nexus/content/groups/public/hibernate-core/3.3.1.GA/hibernate-core-3.3.1.GA.jar Ie, w/o the "ourcompany.com" path. From my perspective, it should just try to pull down hibernate w/o inserting the groupId, but maybe i'm not understanding how i'm supposed to run this command?

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  • Intellij Grails and Git

    - by WaZ
    I want to backup my code using smart Git. As a start I am a bit confused, IntelliJ has created two folders for my GRails project: these reside in 1) C:\Documents and Settings\me\.grails\1.2.1\projects and 2) C:\Documents and Settings\me\IdeaProjects\ The 1) contains a plugins folder which contains directories and files of plugins I am using inside my project. Do I have to include both 1) and 2) directories inside GIT? If yes what can I ignore? If no which of the files do I have to include Thanks, Much appreciated, WB

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  • Grails URL's with Tomcat/Apache ProxyPass

    - by intargc
    Grails tends to write out the URL for everything that uses its tags as /appName/whatever. For instance, if I use the tag: <g:javascript library="jquery"/> the resulting tag is <script src="/appName/jquery/jquery.js"></script> This causes an issue with using ProxyPass with Apache/Tomcat. All of my CSS, JS, Images and links have that /appName prefixed to them. Is there a way to work around this with ProxyPass or possibly a way for Grails to not prefix the appName to the front of all of my URL's?

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  • Spring Webflow in Grails keeping plenty of hibernate sessions open

    - by Pavel P
    Hi, I have an Internet app running on Grails 1.1.2 and it integrates Spring WebFlow mechanism. The problem is that there are some bots ignoring robots.txt and are entering the flow quite often. Because second step of the flow needs some human intelligence, the bot leaves open flow after the first step. This causes a lot of open flows which leades to a lot of abandoned open hibernate sessions. Do you know some common clean-up mechanism for this kind of unattended flows (plus hibernate sessions) in Grails+Spring WebFlow? Thanks, Pavel

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  • Getting the username in Twitter using OAuth 0.1.1 Grails plugin

    - by firnnauriel
    anyone had tried using http://www.grails.org/plugin/oauth? i'm trying it in twitter.com and i'm having an issue on getting the username or accessing this API: http://apiwiki.twitter.com/Twitter-REST-API-Method%3A-account%C2%A0verify_credentials here's the code in my callback URL: def twitterCallback = { def response = oauthService.accessResource('http://api.twitter.com/1/account/verify_credentials.json','twitter', session.oauthToken) log.debug "response: ${response}" } i keep getting this error: 2010-04-22 14:32:56,842 [http-8081-1] WARN httpclient.HttpMethodBase - Cookie rejected: "$Version=0; _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCMQcOCQoAToHaWQiJThiYWY4MGI1YTY1M2U0%250AYTRhNjAzYTA2NTBmNjkzZTYwIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--31d191141bf32e0489967492692f1e77fc9e1845; $Path=/; $Domain=.twitter.com". Illegal domain attribute ".twitter.com". Domain of origin: "twitter.com" 2010-04-22 14:32:56,854 [http-8081-1] INFO auth.AuthChallengeProcessor - basic authentication scheme selected 2010-04-22 14:32:56,856 [http-8081-1] INFO httpclient.HttpMethodDirector - No credentials available for BASIC 'Twitter API'@twitter.com:80 2010-04-22 14:32:56,865 [http-8081-1] ERROR errors.GrailsExceptionResolver - null it seems that it uses BASIC authentication instead of OAuth. any ideas? or is there an issue in the OAuth Grails plugin? thanks.

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  • How to find the physical path of a GSP file in a deployed grails application

    - by Deepak Mittal
    I need to find out the physical path of a grails GSP file. My requirement is that I want to create a new layout file at run-time and use that in the application. I have been able to achieve this without problem when the application runs on jetty (grails run-app), however, when I deploy the app on Jboss, the path at which the file needs to be created changes. So, ideally I would like to find out at runtime using some magical utility the path of a particular GSP (lets say main.gsp layout file) and I need to create my new layout in the same directory in which main.gsp reside. Any pointers? -Deepak

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  • Grails MySql processList

    - by Masiar Ighani
    Hello, i have a grails application with a webflow. I store my inner flow objects of interest in the converstaion scope. After entering and leaving the flow a few times, i see that the single user connected to the DB (MySql) generates a lot of threads on the MySql Server which are not released. The processlist in mysql show me the threads in sleeping mode and a netstat on the client shows me established connections to the mysql server. I assume the connections are held active and not released. But why is that? What do grails exactly do when entering and leaving a flow? Why are so many connections opened and not closed? Any help would be appreciated. regards, masiar

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  • No Hibernate Session bound to thread grails

    - by naresh
    Actually we've lot of quartz jobs in our application. For some time all of the jobs work fine. After some time all jobs are throwing the following exception. org.quartz.JobExecutionException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here [See nested exception: java.lang.IllegalStateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here] at grails.plugins.quartz.QuartzDisplayJob.execute(QuartzDisplayJob.groovy:37) at org.quartz.core.JobRunShell.run(JobRunShell.java:202) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) Caused by: java.lang.IllegalStateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here at grails.plugins.quartz.QuartzDisplayJob.execute(QuartzDisplayJob.groovy:29) ... 2 more

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  • Displaying desired properties from search results with grails compass

    - by ombud
    Hi, I've been stumped with the problem of displaying a selected set of properties returned as a result via a Compass query in grails. I have 300 columns in my domain class and what I'd like to do is to return ONLY THOSE values I specify (around 10 - 15 properties/fields/columns). All the 300 columns have been indexed, btw. I know I can do this using Lucene by cycling through returned hits and selectively calling a=getField(column_name), et c. My qiuestion is, how do I do the same thing using thee Compass Grails plugin ? Any help will gratefully be appreciated. Thanks in anticipation, Ombud

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  • Grails/Compass question - How can I change the compqass Connection to point to a different directory

    - by ombud
    Hi, I use the Searchable plugin with Grails I have the need to change the directory to which Compass points to, depending upon a UI choice by the user. Normally, this value is set in the compassConnection variable of the searchable map in grails-app/conf/Searchable.groovy, like so, and gets called at app startup time: searchable { compassConnection = new File( "/path/to/index/file/directory" ).absolutePath ... } To do what I need to do, I think that I need to get a handle into the compass config variable and then call config.setConnection("/new/path/to/index/dir") I don't know how I can get a reference to the config compass variable Am I right in assuming that I need to call setConnection(String) only, or is(are) there any other step(s) I need to take? Really appreciate any help that I can get, Shailen

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  • Producer/consumer in Grails?

    - by Mulone
    Hi all, I'm trying to implement a Consumer/Producer app in Grails, after several unsuccessful attempts at implementing concurrent threads. Basically I want to store all the events coming from a clients (through separate AJAX calls) in a single queue and then process such a queue in a linear way as soon as new events are added. This looks like a Producer/Consumer problem: http://en.wikipedia.org/wiki/Producer-consumer_problem How can I implement this in Grails (maybe with a timer or even better by generating an event 'process queue')? Basically I'd like to a have a singleton service waiting for new events in the queue and processing them linearly (even if the queue is loaded by several concurrent processes). Any hints? Cheers!

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  • How much of Grails GORM to test?

    - by Lloyd Meinholz
    Is there a "best practice" or defacto standard with how much of the GORM functionality one should test in the unit/functional tests? My take is that one should probably do most of the domain testing as functional tests so that you get the full grails environment. But what do you test? Inserts, updates, deletes? Do you test constraints even though they were probably more thoroughly tested by the grails release? Or do you just assume that GORM does what it is supposed to do and move to other parts of the application?

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  • Grails Testing hickups

    - by egervari
    I have two testing questions. Both are probably easily answered. The first is that I wrote this unit test in Grails: void testCount() { mockDomain(UserAccount) new UserAccount(firstName: "Ken").save() new UserAccount(firstName: "Bob").save() new UserAccount(firstName: "Dave").save() assertEquals(3, UserAccount.count()) } For some reason, I get 0 returned back. Did I forget to do something? The second question is for those who use IDEA. What should I be running - IDEA's junit tests, or grails targets? I have two options. Also, why does IDEA say that my tests pass and it provides a green light even though the test above actually fails? This will really drive me nuts if I have to check the test reports in html every time I run my tests..... Help?

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  • Track pageviews in Google Analytics on partial url of Grails application

    - by Pieter van Gent
    For my Grails application I want to set up Google Analytics to track only "partial" url's. I 'll explain: a typical Grails url consists of the following parts: domain + application-name + controller + action + id e.g. www.mydomain.com/myapp/controller/action/12345 As far as I understand for Google Analytics the page to be tracked is identified by the entire url. For my purpose I'm not interested in the id part of the url: I want to know which actions have been performed, but I need not know for which id the action was executed. And of course I would like a generic solution, because I have multiple controllers and multiple actions... Maybe some kind of filter stating "I want to track pages 3 levels deep (/myapp/controller/action)" would do? Or a filter stating "exclude everything from url after the last /"? Any help would be much appreciated. Kind regards, Pieter

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  • Grails LDAP authentication failed

    - by Leo
    Hi, guys I am developing a web app by using Grails and using Grails LDAP as my Authentication mechanism. However, i always get following error: {Error 500: Cannot pass null or empty values to constructor Servlet: default URI: /ldap-app/j_spring_security_check Exception Message: Cannot pass null or empty values to constructor Caused by: Cannot pass null or empty values to constructor Class: GrailsAuthenticationProcessingFilter } My SecurityConfig.groovy file is : security { // see DefaultSecurityConfig.groovy for all settable/overridable properties active = true loginUserDomainClass = "User" authorityDomainClass = "Role" requestMapClass = "Requestmap" useLdap = true ldapRetrieveDatabaseRoles = false ldapRetrieveGroupRoles = false ldapServer = 'ldap://worf-mi.dapc.kao.au:389' ldapManagerDn = 'CN=sa-ldap-its,OU=Unix Servers for Kerberos,OU=Information Technology Services,OU=Special Accounts,DC=nexus,DC=dpac,DC=cn' ldapManagerPassword = 'Asdf1234' ldapSearchBase = 'OU=People,DC=nexus,DC=dpac,DC=cn' ldapSearchFilter = '(&(cn={0})(objectClass=user))' }

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  • security roles in grails portlets

    - by srinath
    Hi, How to include security roles in grails portlets for liferay ? After deploying war in tomcat i added manually these lines for roles liferay-portlet.xml : <role-mapper> <role-name>administrator</role-name> <role-link>Administrator</role-link> </role-mapper> portlet.xml : <security-role-ref> <role-name>administrator</role-name> </security-role-ref> But How to add these roles settings in grails app before creating war ?? Please suggest me . thanks in advance sri..

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  • Grails Illegel Exception

    - by Srinath
    Hi, Can any one tell me when this error occurs . I suspect this is coming when added any new js in Grails . I'm unable to dig this : 16 Apr, 2010 4:58:25 PM org.apache.catalina.loader.WebappClassLoader loadClass INFO: Illegal access: this web application instance has been stopped already. Could not load org.codehaus.groovy.grails.plugins.codecs.HTMLCodecBeanInfo. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact. java.lang.IllegalStateException thanks in advance, srinath

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