Add single date fixes.

Add additional stuff
Add trim for qualifier and certainty values.

src/main/kotlin/ch/memobase/transform/DateNormalizationTransform.kt

@@ -21,7 +21,6 @@ import ch.memobase.rdf.RDF
 import ch.memobase.rdf.RICO
 import ch.memobase.rdf.RicoResource
 import org.apache.logging.log4j.LogManager
-import kotlin.math.sin
 
 class DateNormalizationTransform(
     private val singleDateMatchers: List<Regex>,
@@ -48,10 +47,24 @@ class DateNormalizationTransform(
                         val match = it.matchEntire(value)
                         if (match != null) {
                             // The presence of these fields is validated when compiling the regex.
-                            val day = match.groups["day"]!!.value
-                            val month = match.groups["month"]!!.value
-                            val year = match.groups["year"]!!.value
-                            getSingleDate(day, month, year)
+                            val day = match.groups["day"]?.value.let { day ->
+                                if (day != null && day.length == 1)
+                                    "0$day"
+                                else day
+                            }
+                            val month = match.groups["month"]?.value.let { month ->
+                                if (month != null)
+                                    Date.validateMonthValue(issues, month)
+                                else
+                                    null
+                            }
+                            val year = match.groups["year"]?.value
+                            if (day != null && month != null && year != null) {
+                                getSingleDate(day, month, year)
+                            } else {
+                                issues.add("Failed to parse matched single date: $value.")
+                                null
+                            }
                         } else {
                             null
                         }
@@ -134,7 +147,16 @@ class DateNormalizationTransform(
                                 } catch (ex: IllegalArgumentException) {
                                     null
                                 }
-                                getDateRange(fromDay, untilDay, fromMonth, untilMonth, fromYear, untilYear, singleMonth, singleYear)
+                                getDateRange(
+                                    fromDay,
+                                    untilDay,
+                                    fromMonth,
+                                    untilMonth,
+                                    fromYear,
+                                    untilYear,
+                                    singleMonth,
+                                    singleYear
+                                )
                             } else {
                                 null
                             }
@@ -170,7 +192,7 @@ class DateNormalizationTransform(
             val matchedGroup = matchResult.groups[group]?.value
             if (matchedGroup != null) {
                 value = value.replace(matchResult.value, "")
-                matchedGroup
+                matchedGroup.trim()
             } else {
                 null
             }
@@ -196,11 +218,11 @@ class DateNormalizationTransform(
             singleYear != null ->
                 when {
                     singleMonth != null ->
-                    when {
-                        dayFrom != null && dayUntil != null -> "$singleYear-$singleMonth-$dayFrom/$dayUntil"
-                        // the case where only a single day is set is covered by the single date normalizer.
-                        else -> "$singleYear-$singleMonth"
-                    }
+                        when {
+                            dayFrom != null && dayUntil != null -> "$singleYear-$singleMonth-$dayFrom/$dayUntil"
+                            // the case where only a single day is set is covered by the single date normalizer.
+                            else -> "$singleYear-$singleMonth"
+                        }
                     monthFrom != null && monthUntil != null ->
                         when {
                             dayFrom != null && dayUntil != null -> "$singleYear-$monthFrom-$dayFrom/$monthUntil-$dayUntil"

src/test/resources/tmp/turtle-output-language-normalization.ttl

@@ -22,27 +22,27 @@
 @prefix foaf:  <http://xmlns.com/foaf/0.1/> .
 @prefix dc:    <http://purl.org/dc/elements/1.1/> .
 
-_:b0    a                 rico:Language ;
-        schema:sameAs     "http://www.wikidata.org/entity/Q188" ;
-        rico:name         "tedesco"@it , "allemand"@fr , "Deutsch"@de ;
-        rico:resultsFrom  _:b1 ;
-        rico:type         "caption" .
-
-_:b2    a          rico:Language ;
-        rico:name  "Deutsch" ;
-        rico:type  "caption" .
-
-_:b1    a                   rico:Activity ;
-        rico:affects        _:b2 ;
-        rico:beginningDate  "2022-02-17T13:37:45Z"^^xsd:dateTime ;
-        rico:endDate        "2022-02-17T13:37:45Z"^^xsd:dateTime ;
+_:b0    a                   rico:Activity ;
+        rico:affects        _:b1 ;
+        rico:beginningDate  "2022-02-21T15:39:10Z"^^xsd:dateTime ;
+        rico:endDate        "2022-02-21T15:39:10Z"^^xsd:dateTime ;
         rico:performedBy    [ a              rico:Mechanism ;
                               rico:name      "LanguagesNormalizer" ;
-                              rico:performs  _:b1
+                              rico:performs  _:b0
                             ] ;
-        rico:resultsIn      _:b0 ;
+        rico:resultsIn      _:b2 ;
         rico:type           "enrichment" .
 
 [ a                 rico:Record ;
-  rico:hasLanguage  _:b0 , _:b2
+  rico:hasLanguage  _:b2 , _:b1
 ] .
+
+_:b1    a          rico:Language ;
+        rico:name  "Deutsch" ;
+        rico:type  "caption" .
+
+_:b2    a                 rico:Language ;
+        schema:sameAs     "http://www.wikidata.org/entity/Q188" ;
+        rico:name         "tedesco"@it , "allemand"@fr , "Deutsch"@de ;
+        rico:resultsFrom  _:b0 ;
+        rico:type         "caption" .