The definitive guide to grails second edition - phần 2 pdf

... relates to associations. The easiest case to understand is many -to- one and one -to- one associations. For example, consider the artist property of the Album class, which is a many -to- one association, ... relative URI to redirect to url An absolute URL to redirect to 38CHAPTER 2 ■ GETTING STARTED WITH GRAILS Figure 2- 1 2. Adding the driver’s JAR file to the application’s lib directoryWith the driver ... configured to use an HSQLDB database that per-sists to a file. Listing 2- 2 2 shows the production-database configuration.Listing 2- 2 2. The Production Data-Source Configuration production { dataSource...

The definitive guide to grails second edition - phần 8 pdf

... Grails to handle other types beyond the preconfigured ones, you need to add a new entry into the grails. mime.types map where the key is the file extension of the format typically used and the ... command:$ grails install-plugin feedsCreating RSS and Atom FeedsWhat the Feeds plugin does is add functionality to the render method to facilitate the render-ing of RSS and Atom feeds. Under the ... use other beans as factories. For example, to create another bean from the calendarBean in Listing 1 6-9 , you can simply pass the name of the bean as an argu-ment to the bean-defining method:USCalendar(calendarBean)...

The definitive guide to grails second edition - phần 1 pptx

... . 20 6 The Definitive Guide to Grails Second Edition ■■■Graeme Rocher and Jeff BrownCHAPTER 1 ■ THE ESSENCE OF GRAILS 3Figure 1-1 . The Grails stack Grails, the PlatformWhen approaching Grails, ... (see Listing 1-1 1). Listing 1-1 1. Running an Application with run-app 20 0 8-0 6-1 9 23 :15:46. 523 :/gTunes:INFO: Initializing Spring FrameworkServlet &apos ;grails& apos; 20 0 8-0 6-1 9 23 :15:47.963::INFO: ... directory (see Figure 2- 2 ).Figure 2- 2 . Locating the SongController in the directory To enable dynamic scaffolding, within the SongController create a scaffold property with the name of the target class...

The definitive guide to grails second edition - phần 3 potx

... based on the supplied attributes, which include the following:• controller: The controller name to link to • action: The action name to link to • id: The identifier to append to the end of the URI• ... user. To do so, you can use the create-domain-class command: grails create-domain-class com.g2one.gtunes.UserThis will create a new domain class at the location grails- app/domain/com/g2one/gtunes/User.groovy. ... reference to the params object via the ${ } expres-sion syntax, which then allows passing parameters from the current page to the linked page. Next you’ll see how to create links to other resources.■Note...

The definitive guide to grails second edition - phần 4 docx

... amazon-a3s-*-java-library.jar file into your project lib directory.4. Copy the required dependencies commons-codec- 1-3 .jar and commons-httpclient-3.0.1.jar from the third-party/jakarta-commons directory to your project’s ... INTERNATIONALIZATIONFigure 7-1 . The grails- app/i18n/ directory The messages.properties file in the grails- app/i18n/ directory contains default valida-tion messages in English. These messages are used ... makes sense to create a cus-tom tag that encapsulates that logic. Enter the AlbumArtTagLib. To create the AlbumArtTagLib, run the following command:$ grails create-tag-lib com.g2one.gtunes.AlbumArtThis...

The definitive guide to grails second edition - phần 5 ppsx

... how the name of the view to transition to is the return value of the closure passed to the to method. In other words, the following three examples are equivalent, with each tran-sitioning to the ... "enterShipping" } The example in Listing 9-5 2 sets the currentState to requireHardCopy. The next trick is to use the signalEvent(String) method to transition from one state to the next. Notice how the code ... counts the total number of instances in the database. To demonstrate these, let’s look at some examples of their usage, as shown in Listing 1 0 -2 .Listing 1 0 -2 . Using the list() Method// get all the...

The definitive guide to grails second edition - phần 6 pptx

... the first-level cache. Although the first-level cache stores actual persistent instances for the scope of the Session, the second- level cache exists for the whole time that the SessionFac-tory ... Listing 1 3 -2 4 shows how to use dependency injection to get hold of a refer-ence to the CacheService in the CacheTagLib. The cacheOrReturn method is then used to cache the body of the tag using the ... printed to the console. You can see some typical output from the list-plugins command in Listing 1 3 -2 , shortened for brevity.Listing 1 3 -2 . Output from the list-plugins CommandPlug-in list out-of-date,...

The definitive guide to grails second edition - phần 7 docx

... jsecurity-0 .2. 1 installedPlug-in provides the following new scripts: grails create-auth-controller grails create-db-realm grails create-ldap-realm grails quick-startAs you can see from the output ... plugin, you need to install the simple-cache plu-gin that the album-art plugin is dependent on into the gTunes application:$ grails install-plugin /simple-cache /grails- simple-cache-0.1.zipWith ... if the actionName is the buy action, then there is some logic in there to take the user back to the Album they were trying to buy. You could, of course, redirect to the original URI using the...

The definitive guide to grails second edition - phần 9 doc

... many -to- many association. A many -to- many association is mapped using a join table in a similar way to a unidirectional one -to- many associ-ation. Figure 1 7-3 shows an example of how a many -to- many ... Conversely, the column argument is used to specify the name of the column to store the identifier of the many side.Crucially, the mapping in Listing 1 7-5 works only for a unidirectional one -to- many ... can change the way a many -to- many association maps onto the underlying database using the same joinTable argument used to configure a unidirectional one -to- many association. Listing 1 7-7 shows...

The definitive guide to grails second edition - phần 10 potx

... mapping, changing, 521 – 524 associationsdata binding and, 81– 82 GORM, overview of, 25 2 25 3one -to- many, 24 , 54–56, 521 , 522 – 523 one -to- one, 53–54many -to- many, 523 – 524 many -to- one, 81, 521 performance ... validation, 21 8 22 2dynamic transitions, 23 5 23 6prices for albums, providing, 20 9purchase, 20 8querying about CD purchase, 21 6 21 8recommendations, generating, 22 2 22 7recommendations, showing, 22 7 23 1validating ... tuningassociations, 27 8 28 1batch fetching, 28 1 28 2caching, 28 2 28 4inheritance strategies, 28 5overview of, 27 8querying fromcriteria queries, 25 7 26 1dynamic finders, 25 5 25 6HQL and SQL, 26 1 26 2overview...

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