From 5b906d915eaa800a332fc44382d78d8f750b4ad6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reto=20Gm=C3=BCr?= <reto@factsmission.com>
Date: Sat, 14 Dec 2019 16:21:36 +0100
Subject: [PATCH] using 3 index lengths #4

---
 example/index.html |  2 +-
 src/taxomplete.js  | 41 +++++++++++++++++++++++++++++++++++------
 2 files changed, 36 insertions(+), 7 deletions(-)

diff --git a/example/index.html b/example/index.html
index 10d4672..00417df 100644
--- a/example/index.html
+++ b/example/index.html
@@ -10,7 +10,7 @@
         <label for="species-input">Species</label> <input type="text" id="species-input"/>
         <script>
             let input = document.getElementById("species-input");
-            let taxomplete = new Taxomplete(input, "https://plazi.factsmission.org/sparql");
+            let taxomplete = new Taxomplete(input);
             taxomplete.action = function(value) {
                 alert(value);
             }
diff --git a/src/taxomplete.js b/src/taxomplete.js
index d21cf09..445c626 100644
--- a/src/taxomplete.js
+++ b/src/taxomplete.js
@@ -97,6 +97,7 @@ export default class Taxomplete {
          * @returns A promise for an array of matching genera
          */
         function getGenusSuggestions(prefix) {
+            console.log(self);
             let query = "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n" +
                     "PREFIX dwc: <http://rs.tdwg.org/dwc/terms/>\n" +
                     "PREFIX dwcfp: <http://filteredpush.org/ontologies/oa/dwcFP#>\n" +
@@ -104,8 +105,7 @@ export default class Taxomplete {
                     "SELECT DISTINCT ?genus WHERE {\n" +
                     "?sub dwc:genus ?genus .\n" +
                     "?sub rdf:type dwcfp:TaxonName.\n" +
-                    "?sub tp:genusPrefix \"" + prefix.toLowerCase().substr(0,2) + "\".\n" +
-                    "FILTER REGEX(?genus, \"^" + prefix + "\",\"i\")\n" +
+                    self.genusFilter(prefix) +
                     "} ORDER BY UCASE(?genus) LIMIT 10";
             return self._sparqlEndpoint.getSparqlResultSet(query).then(json => {
                 return json.results.bindings.map(binding => binding.genus.value);
@@ -121,8 +121,7 @@ export default class Taxomplete {
                     "?sub dwc:genus \"" + genus + "\" .\n" +
                     "?sub dwc:species ?species .\n" +
                     "?sub rdf:type dwcfp:TaxonName.\n" +
-                    (prefix.length > 1 ? "?sub tp:speciesPrefix \"" + prefix.toLowerCase().substr(0,2) + "\".\n" : "") +
-                    "FILTER REGEX(?species, \"^" + prefix + "\",\"i\")\n" +
+                    self.speciesFilter(prefix) +
                     "} ORDER BY UCASE(?species) LIMIT 10";
             return self._sparqlEndpoint.getSparqlResultSet(query).then(json => {
                 return json.results.bindings.map(binding => binding.species.value);
@@ -138,8 +137,7 @@ export default class Taxomplete {
                     "?sub dwc:genus ?genus .\n" +
                     "?sub dwc:species ?species .\n" +
                     "?sub rdf:type dwcfp:TaxonName.\n" +
-                    (prefix.length > 1 ? "?sub tp:speciesPrefix \"" + prefix.toLowerCase().substr(0,2) + "\".\n" : "") +
-                    "FILTER REGEX(?species, \"^" + prefix + "\",\"i\")\n" +
+                    self.speciesFilter(prefix) +
                     "} ORDER BY UCASE(?species) LIMIT 10";
             return self._sparqlEndpoint.getSparqlResultSet(query).then(json => {
                 return json.results.bindings.map(binding => binding.genus.value + " " + binding.species.value);
@@ -147,6 +145,37 @@ export default class Taxomplete {
         }
     }
 
+    speciesFilter(prefix) {
+        return this.filterPattern("species", prefix);
+    }
+
+    genusFilter(prefix) {
+        return this.filterPattern("genus", prefix);
+    }
+
+    basicFilterPattern(propPart, prefix) {
+        return "FILTER REGEX(?"+propPart+", \"^" + prefix + "\",\"i\")\n";
+    }
+
+    filterPattern(propPart, prefix) {
+        let result = "";
+        if (prefix.length > 3) {
+            result += "?sub tp:"+propPart+"Prefix4 \"" + prefix.toLowerCase().substr(0,4) + "\".\n";
+            result += this.basicFilterPattern(propPart, prefix);
+        } else {
+            if (prefix.length > 2) {
+                result += "?sub tp:"+propPart+"Prefix3 \"" + prefix.toLowerCase().substr(0,3) + "\".\n";
+            } else {
+                if (prefix.length > 1) {
+                    result += "?sub tp:"+propPart+"Prefix2 \"" + prefix.toLowerCase().substr(0,2) + "\".\n";
+                } else {
+                    result += this.basicFilterPattern(propPart, prefix);
+                }    
+            }
+        }
+        return result;
+    }
+
     lookup() {
         this.action(this._input.value.toString());
     }