diff --git a/src/main/java/org/gcube/common/storagehubwrapper/server/StorageHubClientService.java b/src/main/java/org/gcube/common/storagehubwrapper/server/StorageHubClientService.java
index e1b9c9b..3e44f0a 100644
--- a/src/main/java/org/gcube/common/storagehubwrapper/server/StorageHubClientService.java
+++ b/src/main/java/org/gcube/common/storagehubwrapper/server/StorageHubClientService.java
@@ -6,6 +6,7 @@ import java.util.List;
 import org.apache.commons.lang.Validate;
 import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
 import org.gcube.common.scope.api.ScopeProvider;
+import org.gcube.common.storagehub.client.StreamDescriptor;
 import org.gcube.common.storagehub.client.dsl.FileContainer;
 import org.gcube.common.storagehub.client.dsl.FolderContainer;
 import org.gcube.common.storagehub.client.dsl.GenericItemContainer;
@@ -108,6 +109,19 @@ public class StorageHubClientService {
 		return shcClient.open(id).asFolder().list().withContent().getItems();
 	}
 
+	/**
+	 * Gets the children.
+	 *
+	 * @param id the id
+	 * @return the children
+	 */
+	public List<? extends Item> getFilteredChildren(String id, Class<? extends Item> aType){
+		setContextProviders(scope, authorizationToken);
+		return shcClient.open(id).asFolder().list().ofType(aType).withContent().getItems();
+	}
+
+
+
 
 	/**
 	 * Gets the item.
@@ -316,6 +330,26 @@ public class StorageHubClientService {
 		}
 	}
 
+	/**
+	 * Download file.
+	 *
+	 * @param itemId the item id
+	 * @param fileName the file name
+	 * @param nodeIdsToExclude the node ids to exclude
+	 * @return the stream descriptor
+	 * @throws Exception the exception
+	 */
+	public StreamDescriptor downloadFile(String itemId, String fileName, String nodeIdsToExclude) throws Exception{
+
+		try {
+			StreamDescriptor streamDesc = shcClient.open(itemId).asFile().download(nodeIdsToExclude);
+			return new StreamDescriptor(streamDesc.getStream(), streamDesc.getFileName());
+		} catch (Exception e) {
+			logger.error("Error on downoloading the file: "+fileName+ " with id: "+itemId, e);
+			throw new Exception("Error on downoloading the file: "+fileName+". Try again");
+		}
+	}
+
 
 	/**
 	 * Upload archive.
diff --git a/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java b/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
index fe6660a..ee17eef 100644
--- a/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
+++ b/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
@@ -266,6 +266,23 @@ public final class WorkspaceStorageHubClientService implements Workspace{
 		return toChildren;
 	}
 
+	/* (non-Javadoc)
+	 * @see org.gcube.portal.storagehubwrapper.shared.tohl.Workspace#getChildren(java.lang.String)
+	 */
+	public List<? extends WorkspaceItem> getFilteredChildren(String id, Class<? extends Item> aType){
+
+		Validate.notNull(id,"The input id is null");
+		List<? extends Item> children = storageHubClientService.getFilteredChildren(id, aType);
+		List<WorkspaceItem> toChildren = new ArrayList<WorkspaceItem>(children.size());
+
+		for (Item item : children) {
+			WorkspaceItem child = HLMapper.toWorkspaceItem(item);
+			toChildren.add(child);
+		}
+
+		return toChildren;
+	}
+
 	/* (non-Javadoc)
 	 * @see org.gcube.portal.storagehubwrapper.shared.Workspace#getParentsById(java.lang.String)
 	 */
diff --git a/src/main/java/org/gcube/common/storagehubwrapper/server/converter/HLMapper.java b/src/main/java/org/gcube/common/storagehubwrapper/server/converter/HLMapper.java
index f69c088..66c4c2d 100644
--- a/src/main/java/org/gcube/common/storagehubwrapper/server/converter/HLMapper.java
+++ b/src/main/java/org/gcube/common/storagehubwrapper/server/converter/HLMapper.java
@@ -160,7 +160,7 @@ public class HLMapper {
 				}
     		}
 
-    		((WorkspaceFolder) theItem).setPublicFolder(folderItem.isPublicFolder());
+    		((WorkspaceFolder) theItem).setPublicFolder(folderItem.getPublicFolder());
 
     		if(logger.isTraceEnabled()){
     			WorkspaceFolder theFolder = (WorkspaceFolder) theItem;
diff --git a/src/main/java/org/gcube/common/storagehubwrapper/shared/tohl/impl/StreamDescriptor.java b/src/main/java/org/gcube/common/storagehubwrapper/shared/tohl/impl/StreamDescriptor.java
new file mode 100644
index 0000000..c4222eb
--- /dev/null
+++ b/src/main/java/org/gcube/common/storagehubwrapper/shared/tohl/impl/StreamDescriptor.java
@@ -0,0 +1,53 @@
+/**
+ *
+ */
+package org.gcube.common.storagehubwrapper.shared.tohl.impl;
+
+import java.io.InputStream;
+import java.io.Serializable;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import org.gcube.common.storagehubwrapper.shared.tohl.items.FileStreamDescriptor;
+
+
+/**
+ * Instantiates a new stream descriptor.
+ */
+@NoArgsConstructor
+
+/**
+ * Instantiates a new stream descriptor.
+ *
+ * @param stream the stream
+ * @param fileName the file name
+ */
+@AllArgsConstructor
+
+/**
+ * Gets the file name.
+ *
+ * @return the file name
+ */
+@Getter
+
+/**
+ * Sets the file name.
+ *
+ * @param fileName the new file name
+ */
+@Setter
+public class StreamDescriptor implements FileStreamDescriptor, Serializable{
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = -5482612709953553644L;
+	private InputStream stream;
+	private String fileName;
+
+
+}
diff --git a/src/main/java/org/gcube/common/storagehubwrapper/shared/tohl/items/FileStreamDescriptor.java b/src/main/java/org/gcube/common/storagehubwrapper/shared/tohl/items/FileStreamDescriptor.java
new file mode 100644
index 0000000..79fcddc
--- /dev/null
+++ b/src/main/java/org/gcube/common/storagehubwrapper/shared/tohl/items/FileStreamDescriptor.java
@@ -0,0 +1,32 @@
+/**
+ *
+ */
+package org.gcube.common.storagehubwrapper.shared.tohl.items;
+
+import java.io.InputStream;
+
+
+/**
+ * The Interface FileStreamDescriptor.
+ *
+ * @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
+ * Sep 26, 2018
+ */
+public interface FileStreamDescriptor {
+
+	/**
+	 * Gets the stream.
+	 *
+	 * @return the stream
+	 */
+	public InputStream getStream();
+
+	/**
+	 * Gets the file name.
+	 *
+	 * @return the fileName
+	 */
+	public String getFileName();
+
+
+}