adding tatup filter for date issued >= 2017

src/main/java/org/gesis/dda/feeder/impl/FeedingContextFactory.java

@@ -12,6 +12,7 @@ import org.gesis.dda.filter.impl.Doabooks2SsoarBundleFilter;
 import org.gesis.dda.filter.impl.Fqs2SsoarBundleFilter;
 import org.gesis.dda.filter.impl.Jfr2SsoarBundleFilter;
 import org.gesis.dda.filter.impl.SsoarTargetRepositoryBundleFilter;
+import org.gesis.dda.filter.impl.Tatup2SsoarBundleFilter;
 import org.gesis.dda.filter.impl.Wbv2SsoarBundleFilter;
 import org.gesis.dda.filter.impl.Wzb2SsoarBundleFilter;
 import org.gesis.dda.persist.PersistableHelper;
@@ -150,6 +151,10 @@ public class FeedingContextFactory {
                 log.info("using Doabooks2SsoarBundleFilter");
                 result = new Doabooks2SsoarBundleFilter();
                 break;
+            case "https://www.tatup.de/index.php/tatup/oai$$ssoar":
+                log.info("using Tatup2SsoarBundleFilter");
+                result = new Tatup2SsoarBundleFilter();
+                break;
             default:
                 log.debug("using default IdentityMetadataTransformer");
                 result = new AcceptAnyBundleFilter();

src/main/java/org/gesis/dda/filter/impl/Tatup2SsoarBundleFilter.java

+package org.gesis.dda.filter.impl;
+
+import java.util.Set;
+
+import org.gesis.dda.filter.BundleFilter;
+import org.gesis.dda.publishing.domain.Bundle;
+import org.gesis.dda.publishing.domain.Metadatum;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Tatup2SsoarBundleFilter implements BundleFilter {
+    
+    private final static Logger LOG = LoggerFactory.getLogger(Tatup2SsoarBundleFilter.class);
+    
+    /**
+     * Filter away everything published before 2017
+     */
+    @Override
+    public boolean test(Bundle bundle) {
+        
+        boolean result;
+        Set<Metadatum> metadata = bundle.getMetadata();
+        Metadatum dateIssued = metadata.stream().filter( m -> m.getKey().equals("dc.date.issued") ).findFirst().orElse(null);
+        if (null != dateIssued) {
+            String dateIssuedString = dateIssued.getValue();
+            
+            try {
+                int dateIssuedValue = Integer.parseInt(dateIssuedString);
+                
+                if ( dateIssuedValue >= 2017 ) {
+                    result = true;
+                }
+                else {
+                    LOG.info("Tatup2SsoarBundleFilter - filtering away bundle.reference={}", bundle.getReference() );
+                    result = false;
+                }
+            }
+            catch (NumberFormatException e) {
+                LOG.warn("unparsable dc.source.volume={} for bundle.reference={}", dateIssuedString, bundle.getReference() );
+                result = true;
+            }
+            
+        }
+        else {
+            result = true;
+        }
+        
+        return result;
+    }
+    
+}