Clover viewer

search-solr/src/main/java/edu/unc/lib/boxc/search/solr/filters/HasValuesFilter.java

@@ -0,0 +1,34 @@
+package edu.unc.lib.boxc.search.solr.filters;
+
+import edu.unc.lib.boxc.search.api.SearchFieldKey;
+import edu.unc.lib.boxc.search.api.filters.QueryFilter;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * Filter which restricts results to entries which contain populated values for the given key with
+ * the specified field search value
+ *
+ * @author lfarrell
+ */
+public class HasValuesFilter implements QueryFilter {
+    private final SearchFieldKey fieldKey;
+    private final List<String> fieldValues;
+
+    protected HasValuesFilter(SearchFieldKey fieldKey, List<String> fieldValues) {
+        this.fieldKey = fieldKey;
+        this.fieldValues = fieldValues;
+    }
+
+    @Override
+    public String toFilterString() {
+        return fieldValues.stream().map(v -> getFieldKey().getSolrField() + ":" + v)
+                .collect(Collectors.joining(" OR "));
+    }
+
+    @Override
+    public SearchFieldKey getFieldKey() {
+        return fieldKey;
+    }
+}

search-solr/src/main/java/edu/unc/lib/boxc/search/solr/filters/QueryFilterFactory.java

@@ -49,4 +49,14 @@ public static QueryFilter createFilter(SearchFieldKey fieldKey) {
     public static QueryFilter createIIIFv3ViewableFilter(List<String> fileTypes) {
         return new IIIFv3ViewableFilter(fileTypes);
     }
+
+    /**
+     *
+     * @param fieldKey searchField
+     * @param fieldValues list of values to search for
+     * @return new QueryFilter instance with the provided file type
+     */
+    public static QueryFilter createHasValuesFilter(SearchFieldKey fieldKey, List<String> fieldValues) {
+        return new HasValuesFilter(fieldKey, fieldValues);
+    }
 }

search-solr/src/test/java/edu/unc/lib/boxc/search/solr/filters/QueryFilterFactoryTest.java

@@ -6,6 +6,7 @@
 import org.junit.jupiter.api.Test;
 
 import java.util.HashSet;
+import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.assertInstanceOf;
 
@@ -33,4 +34,10 @@ public void HasPopulatedFieldFilterTest() {
         var filter = QueryFilterFactory.createFilter(SearchFieldKey.STREAMING_TYPE);
         assertInstanceOf(HasPopulatedFieldFilter.class, filter);
     }
+
+    @Test
+    public void HasValuesFilterTest() {
+        var filter = QueryFilterFactory.createHasValuesFilter(SearchFieldKey.FILE_FORMAT_TYPE, List.of("application/pdf"));
+        assertInstanceOf(HasValuesFilter.class, filter);
+    }
 }