是否有简单、简明的方式来检查某一表的两行是否包含所有栏目中的相同数据?
我对此进行了试验,但似乎最明显的解决办法是:
// get an Sql instance
def db = [url: jdbc:hsqldb:mem:testDB , user: sa , password: ,
driver: org.hsqldb.jdbcDriver ]
def sql = Sql.newInstance(db.url, db.user, db.password, db.driver)
// Get 2 rows
GroovyRowResults row1 = sql.firstRow("select * from user where id = 4")
GroovyRowResults row2 = sql.firstRow("select * from user where email = me@example.org ")
// compare them
boolean identical = row1.equals(row2)
具体来说,并不是格罗莫夫,但我是这样做的:
db.firstRow("SELECT COUNT(DISTINCT CONCAT(city,state,zip)) FROM Candidates WHERE id IN (1,2)")[0] == 0
(Specifically, org.codehaus.groovy.util.AbstractConcurrentMap) While doing some profiling of our application thats mixed Java/Groovy, I m seeing a lot of references to the AbstractConcurrentMap class,...
I m new to Grails/Groovy and am trying to find a node in a an xml file; I ve figured out how to iterate over all of them, but I want to exit the loop when the target node is found. I ve read that ...
The IntelliJ Groovy/Grails support in IntelliJ IDEA 8.1 is great. However, I ve recently upgraded to the new and recently open-sourced IntelliJ IDEA Community Edition 9.0 BETA. Since updating to the ...
I typically use groovy to construct simple bean but the Spring IDE plugin to eclipse fails to build when I try to set a property that is generated by groovy without an explicit setter. For example, ...
I d like to port a little piece of code from Ruby to Groovy, and I m stuck at this: def given(array,closure) { closure.delegate = array closure() } given([1,2,3,4]) { findAll { it > 4} ...
This is about a very basic program I m writing in Groovy. I have defined a map inside a method: def addItem() { print("Enter the item name: ") def itemName = reader.readLine() print(...
OK, no cheating now. No, really, take a minute or two and try this out. What does "positions" do? Edit: simplified according to cgrand s suggestion. (defn redux [[current next] flag] [(if flag ...
For further background, see http://grails.markmail.org/message/62w2xpbgneapmhpd I m trying to mock out the Shiro SecurityUtils.getSubject() method in my BootStrap.groovy. I decided on this approach ...