Add indirect acquisitions.

Author: io7m

org.thepalaceproject.opds2.core/src/main/kotlin/org/thepalaceproject/opds2/core/O2Availability.kt

@@ -7,5 +7,10 @@ data class O2Availability(
     value = "state",
     required = true
   )
-  val state : String
+  val state : String,
+
+  @JsonProperty(
+    value = "indirectAcquisition"
+  )
+  val indirectAcquisitionTree : O2IndirectAcquisitionTree? = null
 ) : O2Element()

org.thepalaceproject.opds2.core/src/main/kotlin/org/thepalaceproject/opds2/core/O2IndirectAcquisitionTree.kt

@@ -0,0 +1,16 @@
+package org.thepalaceproject.opds2.core
+
+import com.fasterxml.jackson.annotation.JsonProperty
+
+data class O2IndirectAcquisitionTree(
+  @JsonProperty(
+    value = "type",
+    required = true
+  )
+  val type : String,
+
+  @JsonProperty(
+    value = "child"
+  )
+  val children: List<O2IndirectAcquisitionTree> = listOf()
+) : O2Element()

org.thepalaceproject.opds2.core/src/main/kotlin/org/thepalaceproject/opds2/core/O2Module.kt

@@ -20,6 +20,7 @@ object O2Module {
       .allowClass(O2Availability::class.java)
       .allowClass(O2Catalog::class.java)
       .allowClass(O2Feed::class.java)
+      .allowClass(O2IndirectAcquisitionTree::class.java)
       .allowClass(O2Link::class.java)
       .allowClass(O2LinkDeserializer.O2LinkRaw::class.java)
       .allowClass(O2LinkProperties::class.java)
@@ -35,6 +36,7 @@ object O2Module {
       .allowClass(URI::class.java)
       .allowClassName("java.util.List<java.lang.String>")
       .allowClassName("java.util.List<org.thepalaceproject.opds2.core.O2Catalog>")
+      .allowClassName("java.util.List<org.thepalaceproject.opds2.core.O2IndirectAcquisitionTree>")
       .allowClassName("java.util.List<org.thepalaceproject.opds2.core.O2Link>")
       .allowClassName("java.util.List<org.thepalaceproject.opds2.core.O2NavigationLink>")
       .allowClassName("java.util.List<org.thepalaceproject.opds2.core.O2Publication>")