From c7b619402f290fdf77312af5f426eb6bd0d5e5f7 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 19 May 2013 23:09:39 +0200
Subject: o Implementing my own model of collection+json. My browser want to be
 more relaxed than what normally makes sense. o Implementing the server side
 of the queries.

---
 src/main/scala/io/trygvis/cj/Json4sHelpers.scala | 47 ++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 src/main/scala/io/trygvis/cj/Json4sHelpers.scala

(limited to 'src/main/scala/io/trygvis/cj/Json4sHelpers.scala')

diff --git a/src/main/scala/io/trygvis/cj/Json4sHelpers.scala b/src/main/scala/io/trygvis/cj/Json4sHelpers.scala
new file mode 100644
index 0000000..0241e59
--- /dev/null
+++ b/src/main/scala/io/trygvis/cj/Json4sHelpers.scala
@@ -0,0 +1,47 @@
+package io.trygvis.cj
+
+import org.json4s._
+
+object Json4sHelpers {
+  def getAsObjectList(obj: JObject, name: String): List[JObject] = {
+    (obj \ name) match {
+      case JArray(values) => values.collect{case o@JObject(_) => o}
+      case o@JObject(_) => List(o)
+      case _ => Nil
+    }
+  }
+
+  def getAsValueList(obj: JObject, name: String): List[JValue] = {
+    (obj \ name) match {
+      case JNothing => Nil
+      case JArray(values) => values
+      case j => List(j)
+    }
+  }
+
+  def getAsObject(obj: JObject, name: String): Option[JObject] = {
+    (obj \ name) match {
+      case o@JObject(_) => Some(o)
+      case _ => None
+    }
+  }
+
+  def getAsString(obj: JObject, name: String): Option[String] = {
+    (obj \ name) match {
+      case JString(s) => Some(s)
+      case _ => None
+    }
+  }
+
+  def replace(obj: JObject, name: String, value: JValue): JObject = {
+    val map = obj.obj.toMap - name
+    JObject(map.updated(name, value).toList)
+  }
+
+  def filtered(obj: JObject): JObject = {
+    JObject(obj.obj.filter {
+      case JField(_, JNothing) => false
+      case _ => true
+    })
+  }
+}
-- 
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