Whenever I have the use case of inheritance\u00a0in my Grails application I prefer to have the single table for all the classes, to avoid joins and multiple save statement. But one thing I dont like about this is its class discriminator which have the full class name in it. I dont find it much readable when looking into the sql.<\/p>\n
<\/p>\n
Grails provide cool mapping to customise the discriminator<\/a> in Grails inheritance. To explain this I am taking the example \u00a0of \u00a0my last blog <\/a>.\u00a0So to change the value of discriminator I just need to add the discriminator mapping in every sub class and give them some unique identification value<\/p>\n [java] Now the class discriminator will store “TextBlog” rather than full class name e.g; com.intelligrape.example.TextBlog.<\/p>\n After doing this I change the discriminator column name because its not actually storing the class, so I add following mapping to my base class to change column name.<\/p>\n [java] After doing this the column name will change from “class” to “type”.<\/p>\n <\/p>\n Hope it helps<\/p>\n Uday Pratap Singh<\/a> Whenever I have the use case of inheritance\u00a0in my Grails application I prefer to have the single table for all the classes, to avoid joins and multiple save statement. But one thing I dont like about this is its class discriminator which have the full class name in it. I dont find it much readable […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":7,"footnotes":""},"categories":[7],"tags":[932,4840,930,931],"class_list":["post-7050","post","type-post","status-publish","format-standard","hentry","category-grails","tag-change-discriminator","tag-grails","tag-grails-discriminator","tag-inheritance-in-grails"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t
\nstatic mapping = {
\n discriminator "TextBlog"
\n }
\n[\/java]<\/p>\n
\nstatic mapping = {
\n discriminator column: "type"
\n }
\n[\/java]<\/p>\n
\nuday@intelligrape.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"