added method for version removal

pom.xml

@@ -21,6 +21,12 @@
 	<version>2.0.0-SNAPSHOT</version>
 	<name>storagehub-client-library</name>
 
+	<properties>
+		<maven.compiler.target>1.8</maven.compiler.target>
+		<maven.compiler.source>1.8</maven.compiler.source>
+	</properties>
+
+
 	<dependencyManagement>
 		<dependencies>
 			<dependency>
@@ -33,6 +39,8 @@
 		</dependencies>
 	</dependencyManagement>
 
+
+
 	<dependencies>
 
 
@@ -83,6 +91,7 @@
 		</dependency>
 
 
+
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>

src/main/java/org/gcube/common/storagehub/client/dsl/FileContainer.java

@@ -39,6 +39,11 @@ public class FileContainer extends ItemContainer<AbstractFileItem> {
 		return itemclient.downloadSpecificVersion(this.itemId, versionName);
 	}
 	
+	public FileContainer deleteVersion(String version) throws StorageHubException{
+		itemclient.deleteFileVersion(this.itemId, version);
+		return this;
+	}
+	
 	public FileContainer copy(FolderContainer folder, String newFileName) throws StorageHubException {
 		return new FileContainer(itemclient, itemclient.copy(this.itemId, folder.get().getId(), newFileName));
 	}

src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java

@@ -5,7 +5,6 @@ import java.io.InputStream;
 import java.net.URI;
 import java.net.URL;
 import java.net.URLEncoder;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -36,10 +35,8 @@ import org.gcube.common.storagehub.model.service.Version;
 import org.gcube.common.storagehub.model.service.VersionList;
 import org.gcube.common.storagehub.model.types.ACLList;
 import org.glassfish.jersey.media.multipart.BodyPart;
-import org.glassfish.jersey.media.multipart.ContentDisposition;
 import org.glassfish.jersey.media.multipart.FormDataContentDisposition;
 import org.glassfish.jersey.media.multipart.FormDataMultiPart;
-import org.glassfish.jersey.media.multipart.MultiPart;
 import org.glassfish.jersey.media.multipart.MultiPartFeature;
 import org.glassfish.jersey.media.multipart.file.FileDataBodyPart;
 import org.glassfish.jersey.media.multipart.file.StreamDataBodyPart;
@@ -56,8 +53,6 @@ public class DefaultItemManager extends DefaultManagerClient implements ItemMana
 	}
 
 
-
-
 	@Override
 	public StreamDescriptor resolvePublicLink(String identifier) throws StorageHubException{
 		Call<GXWebTargetAdapterRequest, StreamDescriptor> call = new Call<GXWebTargetAdapterRequest, StreamDescriptor>() {
@@ -414,6 +409,37 @@ public class DefaultItemManager extends DefaultManagerClient implements ItemMana
 		}
 	}
 
+	@Override
+	public void deleteFileVersion(String id, String versionName) throws StorageHubException {
+		Call<GXWebTargetAdapterRequest, Void> call = new Call<GXWebTargetAdapterRequest, Void>() {
+			@Override
+			public Void call(GXWebTargetAdapterRequest manager) throws Exception {
+				Objects.requireNonNull(id, "id cannot be null");
+				Objects.requireNonNull(versionName, "version name cannot be null");
+				GXWebTargetAdapterRequest myManager = manager.path(id).path("versions").path(versionName);
+
+				GXInboundResponse response = myManager.queryParams(initQueryParameters()).delete();
+
+				if (response.isErrorResponse()) {
+					if (response.hasException()) 
+						throw response.getException();
+					else 
+						throw new BackendGenericError("HTTP error code is "+response.getHTTPCode());
+				}
+
+				return null;
+			}
+		};
+		try {
+			delegate.make(call);
+		}catch(StorageHubException e) {
+			throw e;
+		}catch(Exception e1) {
+			throw new RuntimeException(e1);
+		}
+	}
+	
+	
 	@Override
 	public Item get(String id, String... excludeNodes) throws StorageHubException {
 		Call<GXWebTargetAdapterRequest, ItemWrapper<Item>> call = new Call<GXWebTargetAdapterRequest, ItemWrapper<Item>>() {

src/main/java/org/gcube/common/storagehub/client/proxies/ItemManagerClient.java

@@ -92,6 +92,8 @@ public interface ItemManagerClient extends ManagerClient{
 
 	StreamDescriptor downloadSpecificVersion(String id, String version) throws StorageHubException;
 	
+	void deleteFileVersion(String id, String versionName) throws StorageHubException;
+	
 	String setMetadata(String id,Metadata metadata) throws StorageHubException;
 	
 	String setHidden(String id,Boolean value) throws StorageHubException;

src/test/java/org/gcube/data/access/fs/Items.java

@@ -14,6 +14,7 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Map.Entry;
 import java.util.Properties;
+import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
 import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
@@ -31,6 +32,7 @@ import org.gcube.common.storagehub.client.proxies.UserManagerClient;
 import org.gcube.common.storagehub.model.Metadata;
 import org.gcube.common.storagehub.model.acls.AccessType;
 import org.gcube.common.storagehub.model.exceptions.StorageHubException;
+import org.gcube.common.storagehub.model.items.AbstractFileItem;
 import org.gcube.common.storagehub.model.items.FolderItem;
 import org.gcube.common.storagehub.model.items.Item;
 import org.junit.BeforeClass;
@@ -94,6 +96,19 @@ public class Items {
 
 	}
 
+	
+	
+	@Test
+	public void removeVersion() throws Exception {
+		
+		
+		StorageHubClient shc = new StorageHubClient();
+		String id = "024c8cab-f9f7-4fd8-bed2-f6076e5edf91";
+		FileContainer file = shc.open(id).asFile();
+		file.deleteVersion("1.0");
+		
+	}
+	
 	@Test
 	public void uploadTovolatile() throws StorageHubException {
 		StorageHubClient shc = new StorageHubClient();
@@ -112,6 +127,22 @@ public class Items {
 	}
 
 
+	@Test
+	public void uploadfile() {
+		try{
+			StorageHubClient shc = new StorageHubClient();
+			shc.impersonate("pasquale.pagano");
+			URI toUpload = new URI("https://data.d4science.org/shub/E_RGNhNU9aaVhZM3ovNEN2dEdtdXpCWitac0tScmMvcGZSeDlISUtOb2JOMklRQkxrdjBCWnJ4YlJHVlM4VnVjVQ==");
+			String fileName = "DRR014055.fastq.gz";
+
+			shc.open("514295c6-2176-49d5-9487-99fb0fb85372").asFolder().uploadFile(toUpload, fileName, "description");
+			//shc.uploadFileOnVolatile(fileIS, "zoom_amd645.deb", file.length());
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+
 	@Test
 	public void removeTest() {
 		try {