groovy and grails

A simple way to queryUse of 1.findAllWhereIn Grails, the difference between find and FindAll is that the find defaults out the first record of the query, and FindAll is the one that queries all the records.DefUsefindallwhere() { Defcity=cityinfo. Findallwhere (code:ID: 1) iteratorcityinfo> it=city.iterator (); def buf= new stringbuffer (); while (It.hasnext ()) { cityinfo C=it.next (); Buf.append (C.getid () +} render buf.tostring (); If

Silver bullet developed by Java Enterprises: grails + EJB InfoqPublished an articleJason RandolphWrittenArticleThe question is:"Grails + EJB Domain Models step-by-step". This article createsEjb3OfDomain Model(Employees and their computers), useGrailsAdded the add, delete, and modify functions for the object class above. The entire process andGrailsVery close, veryCool. GrailsObject link ing(

Grails Project The default port number is 8080, how to modify it, search on the internet a lot is about using command line parameters, more trouble, each time you start to enter. Finally, we can use the following method to modify it, assuming the new port number is 9000: 1. Runtime changes Each time you start a grails application, you can use the-dserver.port parameter to modify the default port number, a

Configure grails under unbuntu? -- Linux general technology-Linux technology and application information. For details, refer to the following section. Export JAVA_HOME =/usr/jdk1.6.0 _ 12 Export CLASSPATH =.: $ JAVA_HOME/lib: $ JAVA_HOME/jre/lib: $ CLASSPATH Export GRAILS_HOME =/usr/dev/grails-1.0.4 Export PATH = $ JAVA_HOME/bin: $ JAVA_HOME/jre/bin: $ GRAILS_HOME/bin: $ PATH Enter

1. In Groovy, def can be used to define non-type variables (which is similar to var in JavaScript in defining variables), and return a non-type method without def in Java. 2. The equals method in Java corresponds to = in Groovy, And the = (to determine whether to reference the same object) in Java corresponds to the is method in Groovy. 3. Define the array in Jav

Functiona L Language enthusiasts.Scala is a fully object oriented language, more so than Java, with one of the most advanced type systems available on non- The languages, and certainly the most advanced type system on the JVM. It also combines many concepts and features of functional languages, without compromising the object orientation, but its Compromise on functional language characteristics put off some enthusiasts of the latter.Groovy has good acceptance and a popular the web framework in

their answer is true rather than a marketing gimmick, to show that it may be good enough to explain (the popular language)Well, this tells us about how the industry looks at the JVM's main language: Java,groovy,scala,clojure,jython and JRuby *. What happens when we look at the percentage of all the languages involved in the job?Well, well ... It is clear that in the industry despite the din of other languages, Java is still a large presence, with alm

mechanism that Groovy adds. But it turns out that groovy's lexical scope is too restrictive for building Grails (the Groovy Web framework). As a result of the limitations in the dissatisfaction category, one of Grails's creators, Graeme Rocher, added another extension mechanism to Groovy: Expandometaclass. Expandomet

JVM-based two languages in the Java environment: Scala,groovyThe two languages can be mixed in a Java project;Scala: Static language, multi-paradigm language, combines object-oriented, process-oriented, and can interoperate with Java and NET, integrating a wide range of language features, including similar net-like closures, lambda expressions, it is more language features, language complexity is also high ~ ~Groovy: Dynamic language, both as an objec

Label: grails createcriteria group by hql I. totalcount Recently, when using group by in createcriteria in grails development project, we found that the totalcount in pagedresultlist has a problem. After reading a lot of unofficial official materials, I finally came up with a temporary and convenient solution: Int totalcount = domain.exe cutequery ('select count (*) fromDomainWhere ID in (select Min (ID