Merge pull request #138 from TAMULib/137-fedora-multipage-pdf-present…

…ation-manifests Implement multipage pdf support for fedora
TAMULib · Nov 16, 2023 · 13302d3 · 13302d3
2 parents 664b2eb + e0d6a21
commit 13302d3
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diff --git a/pom.xml b/pom.xml
@@ -5,7 +5,7 @@
 
   <groupId>edu.tamu</groupId>
   <artifactId>ir-iiif-service</artifactId>
-  <version>0.6.0-RC2</version>
+  <version>0.6.0-RC3</version>
 
   <name>IR IIIF Service</name>
 

diff --git a/src/main/java/edu/tamu/iiif/service/AbstractManifestService.java b/src/main/java/edu/tamu/iiif/service/AbstractManifestService.java
@@ -17,6 +17,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 import javax.annotation.PostConstruct;
 
@@ -43,10 +44,12 @@
 import de.digitalcollections.iiif.presentation.model.api.v2.Image;
 import de.digitalcollections.iiif.presentation.model.api.v2.ImageResource;
 import de.digitalcollections.iiif.presentation.model.api.v2.Metadata;
+import de.digitalcollections.iiif.presentation.model.api.v2.PropertyValue;
 import de.digitalcollections.iiif.presentation.model.api.v2.Sequence;
 import de.digitalcollections.iiif.presentation.model.api.v2.Service;
 import de.digitalcollections.iiif.presentation.model.api.v2.Thumbnail;
 import de.digitalcollections.iiif.presentation.model.impl.jackson.v2.IiifPresentationApiObjectMapper;
+import de.digitalcollections.iiif.presentation.model.impl.v2.CanvasImpl;
 import de.digitalcollections.iiif.presentation.model.impl.v2.ImageImpl;
 import de.digitalcollections.iiif.presentation.model.impl.v2.ImageResourceImpl;
 import de.digitalcollections.iiif.presentation.model.impl.v2.MetadataImpl;
@@ -332,6 +335,32 @@ protected Optional<Thumbnail> getThumbnail(List<Sequence> sequences) throws URIS
         return optionalThumbnail;
     }
 
+    protected Canvas getCanvasPage(Canvas canvas, int page) {
+        String id = canvas.getId().toString() + "?page=" + page;
+        PropertyValue label = new PropertyValueSimpleImpl(canvas.getLabel().getFirstValue() + "?page=" + page);
+        Canvas canvasPage = new CanvasImpl(id, label, canvas.getHeight(), canvas.getWidth());
+        canvasPage.setImages(canvas.getImages().stream().map(i -> {
+            Image image = new ImageImpl(i.getId().toString().replace("/info.json", ";" + page + "/info.json"));
+            ImageResource ir = i.getResource();
+            ImageResource imageResource = new ImageResourceImpl(ir.getId().toString().replace("/full/full/0/default.jpg", ";" + page + "/full/full/0/default.jpg"));
+            imageResource.setFormat(ir.getFormat());
+            imageResource.setHeight(ir.getHeight());
+            imageResource.setWidth(ir.getWidth());
+            List<Service> services = ir.getServices().stream().map(s -> {
+                Service service = new ServiceImpl(s.getId().toString() + ";" + page);
+                service.setLabel(s.getLabel());
+                service.setContext(s.getContext());
+                service.setProfile(s.getProfile());
+                return service;
+            }).collect(Collectors.toList());
+            imageResource.setServices(services);
+            image.setResource(imageResource);
+            image.setOn(i.getOn());
+            return image;
+        }).collect(Collectors.toList()));
+        return canvasPage;
+    }
+
     private String getResourceId(String url) throws URISyntaxException {
         String id;
         try {

diff --git a/src/main/java/edu/tamu/iiif/service/dspace/rdf/AbstractDSpaceRdfManifestService.java b/src/main/java/edu/tamu/iiif/service/dspace/rdf/AbstractDSpaceRdfManifestService.java
@@ -22,25 +22,18 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
-import java.util.stream.Collectors;
 
 import org.apache.jena.rdf.model.Model;
 import org.apache.jena.rdf.model.NodeIterator;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 
 import de.digitalcollections.iiif.presentation.model.api.v2.Canvas;
-import de.digitalcollections.iiif.presentation.model.api.v2.Image;
 import de.digitalcollections.iiif.presentation.model.api.v2.ImageResource;
-import de.digitalcollections.iiif.presentation.model.api.v2.PropertyValue;
 import de.digitalcollections.iiif.presentation.model.api.v2.Sequence;
-import de.digitalcollections.iiif.presentation.model.api.v2.Service;
 import de.digitalcollections.iiif.presentation.model.impl.v2.CanvasImpl;
-import de.digitalcollections.iiif.presentation.model.impl.v2.ImageImpl;
-import de.digitalcollections.iiif.presentation.model.impl.v2.ImageResourceImpl;
 import de.digitalcollections.iiif.presentation.model.impl.v2.PropertyValueSimpleImpl;
 import de.digitalcollections.iiif.presentation.model.impl.v2.SequenceImpl;
-import de.digitalcollections.iiif.presentation.model.impl.v2.ServiceImpl;
 import edu.tamu.iiif.config.model.AbstractIiifConfig;
 import edu.tamu.iiif.config.model.DSpaceRdfIiifConfig;
 import edu.tamu.iiif.controller.ManifestRequest;
@@ -207,32 +200,6 @@ private List<Canvas> getCanvases(ManifestRequest request, RdfResource rdfResourc
         return canvases;
     }
 
-    private Canvas getCanvasPage(Canvas canvas, int page) {
-        String id = canvas.getId().toString() + "?page=" + page;
-        PropertyValue label = new PropertyValueSimpleImpl(canvas.getLabel().getFirstValue() + "?page=" + page);
-        Canvas canvasPage = new CanvasImpl(id, label, canvas.getHeight(), canvas.getWidth());
-        canvasPage.setImages(canvas.getImages().stream().map(i -> {
-            Image image = new ImageImpl(i.getId().toString().replace("/info.json", ";" + page + "/info.json"));
-            ImageResource ir = i.getResource();
-            ImageResource imageResource = new ImageResourceImpl(ir.getId().toString().replace("/full/full/0/default.jpg", ";" + page + "/full/full/0/default.jpg"));
-            imageResource.setFormat(ir.getFormat());
-            imageResource.setHeight(ir.getHeight());
-            imageResource.setWidth(ir.getWidth());
-            List<Service> services = ir.getServices().stream().map(s -> {
-                Service service = new ServiceImpl(s.getId().toString() + ";" + page);
-                service.setLabel(s.getLabel());
-                service.setContext(s.getContext());
-                service.setProfile(s.getProfile());
-                return service;
-            }).collect(Collectors.toList());
-            imageResource.setServices(services);
-            image.setResource(imageResource);
-            image.setOn(i.getOn());
-            return image;
-        }).collect(Collectors.toList()));
-        return canvasPage;
-    }
-
     private RdfCanvas getDSpaceRdfCanvas(ManifestRequest request, RdfResource rdfResource, int page) throws URISyntaxException, URISyntaxException {
         String uri = rdfResource.getResource().getURI();
 

diff --git a/src/main/java/edu/tamu/iiif/service/fedora/pcdm/AbstractFedoraPcdmManifestService.java b/src/main/java/edu/tamu/iiif/service/fedora/pcdm/AbstractFedoraPcdmManifestService.java
@@ -28,8 +28,6 @@
 import java.util.List;
 import java.util.Optional;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
-
 import org.apache.jena.rdf.model.Model;
 import org.apache.jena.rdf.model.NodeIterator;
 import org.apache.jena.rdf.model.RDFNode;
@@ -38,6 +36,8 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+
 import de.digitalcollections.iiif.presentation.model.api.v2.Canvas;
 import de.digitalcollections.iiif.presentation.model.api.v2.ImageResource;
 import de.digitalcollections.iiif.presentation.model.api.v2.Metadata;
@@ -49,6 +49,7 @@
 import edu.tamu.iiif.config.model.FedoraPcdmIiifConfig;
 import edu.tamu.iiif.controller.ManifestRequest;
 import edu.tamu.iiif.exception.NotFoundException;
+import edu.tamu.iiif.model.CanvasWithInfo;
 import edu.tamu.iiif.model.OptionalImageWithInfo;
 import edu.tamu.iiif.model.rdf.RdfCanvas;
 import edu.tamu.iiif.model.rdf.RdfOrderedResource;
@@ -70,23 +71,21 @@ protected Sequence generateSequence(ManifestRequest request, RdfResource rdfReso
         return sequence;
     }
 
-    protected Canvas generateCanvas(ManifestRequest request, RdfResource rdfResource, int page) throws IOException, URISyntaxException {
+    protected CanvasWithInfo generateCanvas(ManifestRequest request, RdfResource rdfResource, int page) throws IOException, URISyntaxException {
         String parameterizedId = RdfModelUtility.getParameterizedId(rdfResource.getResource().getURI(), request);
         PropertyValueSimpleImpl label = getLabel(rdfResource);
-
         RdfCanvas rdfCanvas = getFedoraRdfCanvas(request, rdfResource, page);
-
         Canvas canvas = new CanvasImpl(getFedoraIiifCanvasUri(parameterizedId), label, rdfCanvas.getHeight(), rdfCanvas.getWidth());
-
         canvas.setImages(rdfCanvas.getImages());
-
         List<Metadata> metadata = getMetadata(rdfResource);
-
         if (!metadata.isEmpty()) {
             canvas.setMetadata(metadata);
         }
+        if (rdfCanvas.getImagesInfo().isEmpty()) {
+            return CanvasWithInfo.of(canvas, Optional.empty());
+        }
 
-        return canvas;
+        return CanvasWithInfo.of(canvas, rdfCanvas.getImagesInfo().get(0));
     }
 
     protected URI getFedoraIiifCollectionUri(String url) throws URISyntaxException {
@@ -190,14 +189,12 @@ private URI getFedoraIiifUri(String url, String type) throws URISyntaxException
 
     private List<Canvas> getCanvases(ManifestRequest request, RdfResource rdfResource) throws IOException, URISyntaxException {
         List<Canvas> canvases = new ArrayList<Canvas>();
-
         Optional<String> firstId = findObject(rdfResource.getModel(), IANA_FIRST_PREDICATE);
         Optional<String> lastId = findObject(rdfResource.getModel(), IANA_LAST_PREDICATE);
         if (firstId.isPresent() && lastId.isPresent()) {
             Resource firstResource = rdfResource.getModel().getResource(firstId.get());
             generateOrderedCanvases(request, new RdfOrderedResource(rdfResource.getModel(), firstResource, firstId.get(), lastId.get()), canvases);
         }
-
         if (canvases.isEmpty()) {
             NodeIterator nodes = rdfResource.getNodesOfPropertyWithId(PCDM_HAS_MEMBER_PREDICATE);
             while (nodes.hasNext()) {
@@ -208,18 +205,22 @@ private List<Canvas> getCanvases(ManifestRequest request, RdfResource rdfResourc
                 RdfResource fileRdfResource = new RdfResource(fileModel, node.toString());
 
                 if (fileRdfResource.getResourceById(PCDM_HAS_FILE_PREDICATE) != null) {
-                    Canvas canvas = generateCanvas(request, fileRdfResource, 0);
-                    if (canvas.getImages().size() > 0) {
-                        canvases.add(canvas);
+                    CanvasWithInfo canvas = generateCanvas(request, fileRdfResource, 0);
+                    if (canvas.getCanvas().getImages().size() > 0) {
+                        canvases.add(canvas.getCanvas());
                     }
                 }
             }
         }
-
         if (canvases.isEmpty() && rdfResource.getResourceById(PCDM_HAS_FILE_PREDICATE) != null) {
-            Canvas canvas = generateCanvas(request, rdfResource, 0);
-            if (canvas.getImages().size() > 0) {
-                canvases.add(canvas);
+            CanvasWithInfo canvasWithInfo = generateCanvas(request, rdfResource, 0);
+            if (canvasWithInfo.getCanvasInfo().isPresent() && canvasWithInfo.getCanvasInfo().get().has("page_count")) {
+                int pageCount = canvasWithInfo.getCanvasInfo().get().at("/page_count").asInt();
+                for (int page = 1; page <= pageCount; ++page) {
+                    canvases.add(getCanvasPage(canvasWithInfo.getCanvas(), page));
+                }
+            } else if (canvasWithInfo.getCanvas().getImages().size() > 0) {
+                canvases.add(canvasWithInfo.getCanvas());
             }
         }
 
@@ -240,9 +241,9 @@ private void generateOrderedCanvases(ManifestRequest request, RdfOrderedResource
 
             Model orderedModel = getFedoraRdfModel(id.get());
 
-            Canvas canvas = generateCanvas(request, new RdfResource(orderedModel, id.get()), 0);
-            if (canvas.getImages().size() > 0) {
-                canvases.add(canvas);
+            CanvasWithInfo canvasWithInfo = generateCanvas(request, new RdfResource(orderedModel, id.get()), 0);
+            if (canvasWithInfo.getCanvas().getImages().size() > 0) {
+                canvases.add(canvasWithInfo.getCanvas());
             }
 
             Optional<String> nextId = findObject(model, IANA_NEXT_PREDICATE);

diff --git a/src/main/java/edu/tamu/iiif/service/fedora/pcdm/FedoraPcdmCanvasManifestService.java b/src/main/java/edu/tamu/iiif/service/fedora/pcdm/FedoraPcdmCanvasManifestService.java
@@ -7,8 +7,8 @@
 
 import org.springframework.stereotype.Service;
 
-import de.digitalcollections.iiif.presentation.model.api.v2.Canvas;
 import edu.tamu.iiif.controller.ManifestRequest;
+import edu.tamu.iiif.model.CanvasWithInfo;
 import edu.tamu.iiif.model.ManifestType;
 import edu.tamu.iiif.model.rdf.RdfResource;
 
@@ -18,8 +18,8 @@ public class FedoraPcdmCanvasManifestService extends AbstractFedoraPcdmManifestS
     public String generateManifest(ManifestRequest request) throws IOException, URISyntaxException {
         String context = request.getContext();
         RdfResource rdfResource = getRdfResourceByContextPath(context);
-        Canvas canvas = generateCanvas(request, rdfResource, 0);
-        return mapper.writeValueAsString(canvas);
+        CanvasWithInfo canvasWithInfo = generateCanvas(request, rdfResource, 0);
+        return mapper.writeValueAsString(canvasWithInfo.getCanvas());
     }
 
     @Override