fixes #281

gradle.properties

@@ -1,2 +1,2 @@
-version = 2.0.2
+version = 2.0.3
 group = com.cabolabs

opt.bat

@@ -1 +1 @@
-java -cp "./lib/*;%GROOVY_HOME%/embeddable/groovy-all-2.4.7.jar;build/libs/opt-2.0.2.jar" com.cabolabs.openehr.opt.Main %1 %2 %3 %4 %5 %6 %7
+java -cp "./lib/*;%GROOVY_HOME%/embeddable/groovy-all-2.4.7.jar;build/libs/opt-2.0.3.jar" com.cabolabs.openehr.opt.Main %1 %2 %3 %4 %5 %6 %7

opt.sh

@@ -1 +1 @@
-java -cp "./lib/*:$GROOVY_HOME/lib/*:build/libs/opt-2.0.2.jar" com.cabolabs.openehr.opt.Main $1 $2 $3 $4 $5 $6 $7
+java -cp "./lib/*:$GROOVY_HOME/lib/*:build/libs/opt-2.0.3.jar" com.cabolabs.openehr.opt.Main $1 $2 $3 $4 $5 $6 $7

src/main/groovy/com/cabolabs/openehr/opt/instance_generator/RmInstanceGenerator.groovy

@@ -2265,8 +2265,8 @@ class RmInstanceGenerator {
 
       add_LOCATABLE_elements(o, ev, parent_arch_id)
 
-      ev.time = generate_DV_DATE_TIME(null, null)
       // IM attribute not present in the OPT
+      ev.time = generate_DV_DATE_TIME(null, null)
 
       def process_attrs = [
          'data',
@@ -2306,21 +2306,24 @@ class RmInstanceGenerator {
 
       def process_attrs = [
          'data',
-         'state'
+         'state' // NOTE: this is optional!
       ]
 
       def oa, mattrs
       process_attrs.each { attr_name ->
 
          oa = o.attributes.find { it.rmAttributeName == attr_name }
 
-         // in event there are no lists, so the results will be lists of 1 item
+         // in event there are no lists, so the result will be a list of 1 item
          mattrs = processAttributeChildren(oa, parent_arch_id)
 
-         ev."${oa.rmAttributeName}" = mattrs[0]
+         if (mattrs)
+         {
+            ev."${oa.rmAttributeName}" = mattrs[0]
+         }
       }
 
-      // TODO: if there is no attribute contraint, the duration generation wont work so we should check that here
+      // required attribute
       oa = o.attributes.find { it.rmAttributeName == 'width' }
       if (oa)
       {
@@ -2335,6 +2338,7 @@ class RmInstanceGenerator {
          )
       }
 
+      // required attribute
       oa = o.attributes.find { it.rmAttributeName == 'math_function' }
       if (oa)
       {
@@ -2355,6 +2359,8 @@ class RmInstanceGenerator {
          )
       }
 
+      // TODO: if a constraint for sample_count is included, generate a value for it.
+
       return ev
    }