#256: versioning API

docs-core/src/main/java/com/sismics/docs/core/dao/FileDao.java

@@ -148,6 +148,8 @@ public class FileDao {
         fileDb.setContent(file.getContent());
         fileDb.setOrder(file.getOrder());
         fileDb.setMimeType(file.getMimeType());
+        fileDb.setVersionId(file.getVersionId());
+        fileDb.setLatestVersion(file.isLatestVersion());
 
         return file;
     }
@@ -180,11 +182,11 @@ public class FileDao {
     public List<File> getByDocumentId(String userId, String documentId) {
         EntityManager em = ThreadLocalContext.get().getEntityManager();
         if (documentId == null) {
-            Query q = em.createQuery("select f from File f where f.documentId is null and f.deleteDate is null and f.userId = :userId order by f.createDate asc");
+            Query q = em.createQuery("select f from File f where f.documentId is null and f.deleteDate is null and f.latestVersion = true and f.userId = :userId order by f.createDate asc");
             q.setParameter("userId", userId);
             return q.getResultList();
         }
-        Query q = em.createQuery("select f from File f where f.documentId = :documentId and f.deleteDate is null order by f.order asc");
+        Query q = em.createQuery("select f from File f where f.documentId = :documentId and f.latestVersion = true and f.deleteDate is null order by f.order asc");
         q.setParameter("documentId", documentId);
         return q.getResultList();
     }

docs-core/src/main/java/com/sismics/docs/core/model/jpa/File.java

@@ -71,6 +71,24 @@ public class File implements Loggable {
     @Column(name = "FIL_ORDER_N")
     private Integer order;
     
+    /**
+     * Version ID.
+     */
+    @Column(name = "FIL_IDVERSION_C")
+    private String versionId;
+
+    /**
+     * Version number (starting at 0).
+     */
+    @Column(name = "FIL_VERSION_N", nullable = false)
+    private Integer version;
+
+    /**
+     * True if it's the latest version of the file.
+     */
+    @Column(name = "FIL_LATESTVERSION_B", nullable = false)
+    private boolean latestVersion;
+
     /**
      * Private key to decrypt the file.
      * Not saved to database, of course.
@@ -160,6 +178,33 @@ public class File implements Loggable {
         this.privateKey = privateKey;
     }
 
+    public String getVersionId() {
+        return versionId;
+    }
+
+    public File setVersionId(String versionId) {
+        this.versionId = versionId;
+        return this;
+    }
+
+    public Integer getVersion() {
+        return version;
+    }
+
+    public File setVersion(Integer version) {
+        this.version = version;
+        return this;
+    }
+
+    public boolean isLatestVersion() {
+        return latestVersion;
+    }
+
+    public File setLatestVersion(boolean latestVersion) {
+        this.latestVersion = latestVersion;
+        return this;
+    }
+
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(this)

docs-core/src/main/java/com/sismics/docs/core/service/InboxService.java

@@ -212,7 +212,7 @@ public class InboxService extends AbstractScheduledService {
         }
 
         // Save the document, create the base ACLs
-        document = DocumentUtil.createDocument(document, "admin");
+        DocumentUtil.createDocument(document, "admin");
 
         // Add the tag
         String tagId = ConfigUtil.getConfigStringValue(ConfigType.INBOX_TAG);
@@ -232,7 +232,7 @@ public class InboxService extends AbstractScheduledService {
 
         // Add files to the document
         for (EmailUtil.FileContent fileContent : mailContent.getFileContentList()) {
-            FileUtil.createFile(fileContent.getName(), fileContent.getFile(), fileContent.getSize(),
+            FileUtil.createFile(fileContent.getName(), null, fileContent.getFile(), fileContent.getSize(),
                     document.getLanguage(), "admin", document.getId());
         }
     }

docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java

@@ -98,6 +98,7 @@ public class FileUtil {
      * Create a new file.
      *
      * @param name File name, can be null
+     * @param previousFileId ID of the previous version of the file, if the new file is a new version
      * @param unencryptedFile Path to the unencrypted file
      * @param fileSize File size
      * @param language File language, can be null if associated to no document
@@ -106,7 +107,7 @@ public class FileUtil {
      * @return File ID
      * @throws Exception e
      */
-    public static String createFile(String name, Path unencryptedFile, long fileSize, String language, String userId, String documentId) throws Exception {
+    public static String createFile(String name, String previousFileId, Path unencryptedFile, long fileSize, String language, String userId, String documentId) throws Exception {
         // Validate mime type
         String mimeType;
         try {
@@ -132,22 +133,42 @@ public class FileUtil {
             }
         }
 
-        // Get files of this document
+        // Prepare the file
-        FileDao fileDao = new FileDao();
-        int order = 0;
-        if (documentId != null) {
-            for (File file : fileDao.getByDocumentId(userId, documentId)) {
-                file.setOrder(order++);
-            }
-        }
-
-        // Create the file
         File file = new File();
-        file.setOrder(order);
+        file.setOrder(0);
+        file.setVersion(0);
+        file.setLatestVersion(true);
         file.setDocumentId(documentId);
         file.setName(StringUtils.abbreviate(name, 200));
         file.setMimeType(mimeType);
         file.setUserId(userId);
+
+        // Get files of this document
+        FileDao fileDao = new FileDao();
+        if (documentId != null) {
+            if (previousFileId == null) {
+                // It's not a new version, so put it in last order
+                file.setOrder(fileDao.getByDocumentId(userId, documentId).size());
+            } else {
+                // It's a new version, update the previous version
+                File previousFile = fileDao.getActiveById(previousFileId);
+                if (previousFile == null || !previousFile.getDocumentId().equals(documentId)) {
+                    throw new IOException("Previous version mismatch");
+                }
+
+                if (previousFile.getVersionId() == null) {
+                    previousFile.setVersionId(UUID.randomUUID().toString());
+                }
+
+                previousFile.setLatestVersion(false);
+                file.setVersionId(previousFile.getVersionId());
+                file.setVersion(previousFile.getVersion() + 1);
+
+                fileDao.update(previousFile);
+            }
+        }
+
+        // Create the file
         String fileId = fileDao.create(file, userId);
 
         // Save the file

docs-core/src/main/resources/config.properties

@@ -1 +1 @@
-db.version=21
+db.version=22

docs-core/src/main/resources/db/update/dbupdate-022-0.sql

@@ -0,0 +1,5 @@
+alter table T_FILE add column FIL_VERSION_N int not null default 0;
+alter table T_FILE add column FIL_LATESTVERSION_B bit not null default 1;
+alter table T_FILE add column FIL_IDVERSION_C varchar(36);
+
+update T_CONFIG set CFG_VALUE_C = '22' where CFG_ID_C = 'DB_VERSION';

docs-web/src/dev/resources/config.properties

@@ -1,3 +1,3 @@
 api.current_version=${project.version}
 api.min_version=1.0
-db.version=21
+db.version=22

docs-web/src/main/java/com/sismics/docs/rest/resource/DocumentResource.java

@@ -900,7 +900,7 @@ public class DocumentResource extends BaseResource {
         }
 
         // Save the document, create the base ACLs
-        document = DocumentUtil.createDocument(document, principal.getId());
+        DocumentUtil.createDocument(document, principal.getId());
 
         // Raise a document created event
         DocumentCreatedAsyncEvent documentCreatedAsyncEvent = new DocumentCreatedAsyncEvent();
@@ -911,7 +911,7 @@ public class DocumentResource extends BaseResource {
         // Add files to the document
         try {
             for (EmailUtil.FileContent fileContent : mailContent.getFileContentList()) {
-                FileUtil.createFile(fileContent.getName(), fileContent.getFile(), fileContent.getSize(),
+                FileUtil.createFile(fileContent.getName(), null, fileContent.getFile(), fileContent.getSize(),
                         document.getLanguage(), principal.getId(), document.getId());
             }
         } catch (IOException e) {

docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java

@@ -66,6 +66,7 @@ public class FileResource extends BaseResource {
      * @apiName PutFile
      * @apiGroup File
      * @apiParam {String} id Document ID
+     * @apiParam {String} previousFileId ID of the file to replace by this new version
      * @apiParam {String} file File data
      * @apiSuccess {String} status Status OK
      * @apiSuccess {String} id File ID
@@ -88,6 +89,7 @@ public class FileResource extends BaseResource {
     @Consumes("multipart/form-data")
     public Response add(
             @FormDataParam("id") String documentId,
+            @FormDataParam("previousFileId") String previousFileId,
             @FormDataParam("file") FormDataBodyPart fileBodyPart) {
         if (!authenticate()) {
             throw new ForbiddenClientException();
@@ -122,7 +124,7 @@ public class FileResource extends BaseResource {
         try {
             String name = fileBodyPart.getContentDisposition() != null ?
                     URLDecoder.decode(fileBodyPart.getContentDisposition().getFileName(), "UTF-8") : null;
-            String fileId = FileUtil.createFile(name, unencryptedFile, fileSize, documentDto == null ?
+            String fileId = FileUtil.createFile(name, previousFileId, unencryptedFile, fileSize, documentDto == null ?
                     null : documentDto.getLanguage(), principal.getId(), documentId);
 
             // Always return OK
@@ -392,6 +394,7 @@ public class FileResource extends BaseResource {
      * @apiSuccess {String} files.id ID
      * @apiSuccess {String} files.mimetype MIME type
      * @apiSuccess {String} files.name File name
+     * @apiSuccess {String} files.version Zero-based version number
      * @apiSuccess {String} files.processing True if the file is currently processing
      * @apiSuccess {String} files.document_id Document ID
      * @apiSuccess {String} files.create_date Create date (timestamp)
@@ -433,6 +436,7 @@ public class FileResource extends BaseResource {
                         .add("id", fileDb.getId())
                         .add("processing", FileUtil.isProcessingFile(fileDb.getId()))
                         .add("name", JsonUtil.nullable(fileDb.getName()))
+                        .add("version", fileDb.getVersion())
                         .add("mimetype", fileDb.getMimeType())
                         .add("document_id", JsonUtil.nullable(fileDb.getDocumentId()))
                         .add("create_date", fileDb.getCreateDate().getTime())

docs-web/src/prod/resources/config.properties

@@ -1,3 +1,3 @@
 api.current_version=${project.version}
 api.min_version=1.0
-db.version=21
+db.version=22

docs-web/src/stress/resources/config.properties

@@ -1,3 +1,3 @@
 api.current_version=${project.version}
 api.min_version=1.0
-db.version=21
+db.version=22

docs-web/src/test/java/com/sismics/docs/rest/TestFileResource.java

@@ -140,9 +140,11 @@ public class TestFileResource extends BaseJerseyTest {
         Assert.assertEquals(2, files.size());
         Assert.assertEquals(file1Id, files.getJsonObject(0).getString("id"));
         Assert.assertEquals("PIA00452.jpg", files.getJsonObject(0).getString("name"));
+        Assert.assertEquals(0, files.getJsonObject(0).getInt("version"));
         Assert.assertEquals(163510L, files.getJsonObject(0).getJsonNumber("size").longValue());
         Assert.assertEquals(file2Id, files.getJsonObject(1).getString("id"));
         Assert.assertEquals("PIA00452.jpg", files.getJsonObject(1).getString("name"));
+        Assert.assertEquals(0, files.getJsonObject(1).getInt("version"));
 
         // Rename a file
         target().path("file/" + file1Id)
@@ -225,6 +227,38 @@ public class TestFileResource extends BaseJerseyTest {
         target().path("/file/" + file2Id + "/process").request()
                 .cookie(TokenBasedSecurityFilter.COOKIE_NAME, file1Token)
                 .post(Entity.form(new Form()), JsonObject.class);
+
+        // Add a new version to a file
+        String file3Id;
+        try (InputStream is0 = Resources.getResource("file/document.txt").openStream()) {
+            StreamDataBodyPart streamDataBodyPart = new StreamDataBodyPart("file", is0, "document.txt");
+            try (FormDataMultiPart multiPart = new FormDataMultiPart()) {
+                json = target()
+                        .register(MultiPartFeature.class)
+                        .path("/file").request()
+                        .cookie(TokenBasedSecurityFilter.COOKIE_NAME, file1Token)
+                        .put(Entity.entity(
+                                multiPart
+                                        .field("id", document1Id)
+                                        .field("previousFileId", file2Id)
+                                        .bodyPart(streamDataBodyPart),
+                                MediaType.MULTIPART_FORM_DATA_TYPE), JsonObject.class);
+                file3Id = json.getString("id");
+                Assert.assertNotNull(file2Id);
+            }
+        }
+
+        // Check the newly created version
+        json = target().path("/file/list")
+                .queryParam("id", document1Id)
+                .request()
+                .cookie(TokenBasedSecurityFilter.COOKIE_NAME, file1Token)
+                .get(JsonObject.class);
+        files = json.getJsonArray("files");
+        Assert.assertEquals(1, files.size());
+        Assert.assertEquals(file3Id, files.getJsonObject(0).getString("id"));
+        Assert.assertEquals("document.txt", files.getJsonObject(0).getString("name"));
+        Assert.assertEquals(1, files.getJsonObject(0).getInt("version"));
     }
 
     /**