Databases
StackOverflow2013
Postsdbo
POType mismatch using Jedis in Scala
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POType mismatch using Jedis in Scala
    primarykey
    data
    text
    <p>The following code produces four type mismatch errors. Why? In the first and second cases I'm doing a simple comparison with Strings. In the third case I'm assigning <code>false</code> to a var of type <code>Boolean</code>. In the final case I'm merely printing a stack trace!</p> <p>I am befuddled.</p> <p>The code:</p> <pre><code>//return TRUE if logged in def isLoggedIn(auth: String): Boolean = { val jedis = pool.getResource() var userid = jedis.get("auth:" + auth) var retVal = false try { if(userid != null) { //error here val userAuth = jedis.get("uid:" + userid + ":auth") if(userAuth == auth) { // error here retVal = true // error here } } } catch { case e =&gt; e.printStackTrace() //error here } finally { pool.returnResource(jedis) return retVal } } </code></pre> <p>The error:</p> <pre><code>[error] type mismatch; [error] found : Unit [error] required: Boolean [error] retVal = true // error here [error] ^ [error] type mismatch; [error] found : Unit [error] required: Boolean [error] if(userAuth == auth) { // error here [error] ^ [error] type mismatch; [error] found : Unit [error] required: Boolean [error] if(userid != null) { //error here [error] ^ [error] type mismatch; [error] found : Unit [error] required: Boolean [error] case e =&gt; e.printStackTrace() //error here [error] ^ [error] four errors found </code></pre> <p>I'm using Jedis 2.0.0 (https://github.com/xetorthio/jedis) to interface with a Redis DB. the Jedis.get() method returns <code>String</code>. I'm using sbt 0.10.1 and scala 2.9.0-1.</p> <p>What's going on?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRaphael
    1. USRaphael
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COWe'd need more context to be able to help you figure out what's going on. For example, what's the surrounding method or expression supposed to return? What line/column is the compiler complaining about?
      singulars
      1. POType mismatch using Jedis in Scala
      1. USAlex Cruise
    2. COSorry. I added more code and details on the error. Thanks.
      singulars
      1. POType mismatch using Jedis in Scala
      1. USRaphael
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload