Overload the Queries constructor to create an instance with the given context client. Add check if an context is empty before deleting it (in progress).

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/resource-management/resource-manager@164573 82a268e6-3cf1-43bd-a215-b396298e98cf

io/src/main/java/org/gcube/resourcemanagement/manager/io/rs/RMDeleteContextCode.java

@@ -9,9 +9,9 @@ import org.gcube.common.gxrest.response.outbound.ErrorCode;
  *
  */
 public enum RMDeleteContextCode implements ErrorCode {
-	
-	CONTEXT_DOES_NOT_EXIST(1, "The context does not exist."),
-	GENERIC_ERROR_FROM_RR(2, "The Resource Registry returned an error.");
+	GENERIC_ERROR_FROM_RR(1, "The Resource Registry returned an error."),
+	CONTEXT_DOES_NOT_EXIST(2, "The context does not exist."),
+	CONTEXT_IS_NOT_EMPTY(3, "The context is not empty. It cannot be deleted. Use force parameter to delete.");
 
 	private int id;
 	private String msg;

webapp/src/main/java/org/gcube/resourcemanagement/manager/webapp/context/CreateRequest.java

@@ -37,7 +37,7 @@ public final class CreateRequest extends RequestToResourceRegistry {
 			try {
 				IsParentOf<Context, Context> relationship = this.context.getParent();
 				logger.info("Fetching parent with UUID: " + relationship.getSource().getHeader().getUUID().toString());
-				Context parent = new Queries().fetchContext(relationship.getSource().getHeader().getUUID(), this.getContextClient());
+				Context parent = new Queries(this.getContextClient()).fetchContext(relationship.getSource().getHeader().getUUID());
 				if (Objects.isNull(parent)) {
 					throw new LocalCodeException(RMCreateContextCode.CONTEXT_PARENT_DOES_NOT_EXIST);
 				}

webapp/src/main/java/org/gcube/resourcemanagement/manager/webapp/context/DeleteRequest.java

@@ -30,9 +30,13 @@ public final class DeleteRequest extends RequestToResourceRegistry {
 	 */
 	@Override
 	public void validate() throws LocalCodeException {
-		if (!new Queries().contextExists(context, this.getContextClient())) {
+		Queries queries = new Queries(this.getContextClient());
+		if (!queries.contextExists(context)) {
 			throw new LocalCodeException(RMDeleteContextCode.CONTEXT_DOES_NOT_EXIST);
 		}
+		if (queries.isContextEmpty(context)) {
+			throw new LocalCodeException(RMDeleteContextCode.CONTEXT_IS_NOT_EMPTY);
+		}
 	}
 
 	/* (non-Javadoc)

webapp/src/main/java/org/gcube/resourcemanagement/manager/webapp/context/Queries.java

@@ -1,6 +1,5 @@
 package org.gcube.resourcemanagement.manager.webapp.context;
 
-import java.util.Objects;
 import java.util.UUID;
 
 import org.gcube.informationsystem.model.entity.Context;
@@ -16,18 +15,30 @@ import org.gcube.informationsystem.resourceregistry.context.ResourceRegistryCont
  */
 final class Queries {
 	
-	private final ResourceRegistryContextClient localRegistryClient = ResourceRegistryContextClientFactory.create();
+	private final ResourceRegistryContextClient client;
 
+	protected Queries() {
+		client = ResourceRegistryContextClientFactory.create();
+	}
+	
+	/**
+	 * Makes the queries with the given client.
+	 * 
+	 * @param client
+	 */
+	protected Queries(ResourceRegistryContextClient client) {
+		this.client = client;
+	}
+	
 	/**
 	 * Tests if the given context exists
 	 *  
 	 * @param uuid
-	 * @param registryClient
 	 * @return
 	 */
-	protected boolean contextExists(UUID uuid, ResourceRegistryContextClient ... registryClient) {
+	protected boolean contextExists(UUID context) {
 		try {
-			return client(registryClient).read(uuid) != null;
+			return this.client.read(context) != null;
 		} catch (ResourceRegistryException e) {
 			return false;
 		}catch (RuntimeException e) {
@@ -37,24 +48,28 @@ final class Queries {
 	}
 	
 	/**
-	 * Fetches the context.
+	 * Fetches the resources context.
 	 * 
-	 * @param uuid
-	 * @param registryClient
+	 * @param context the resource context to fetch
 	 * @return
 	 */
-	protected Context fetchContext(UUID uuid, ResourceRegistryContextClient ... registryClient) {
+	protected Context fetchContext(UUID context) {
 		try {
-			return client(registryClient).read(uuid);
+			return this.client.read(context);
 		} catch (ResourceRegistryException e) {
 			return null;
 		}
 	}
 
-	private ResourceRegistryContextClient client(ResourceRegistryContextClient ... registryClient) {
-		if (registryClient.length > 0 && Objects.nonNull(registryClient[0]))
-			return registryClient[0];
-		else
-			return this.localRegistryClient;
+
+	/**
+	 * Detects if the context has no resources.
+	 * 
+	 * @param context the context to check 
+	 * @return
+	 */
+	protected boolean isContextEmpty(UUID context) {
+		return false;
 	}
+
 }

webapp/src/main/java/org/gcube/resourcemanagement/manager/webapp/context/RequestToResourceRegistry.java

@@ -44,7 +44,7 @@ public abstract class RequestToResourceRegistry {
 			this.validate();
 		} catch (LocalCodeException e) {
 			ResponseFromResourceRegistry response = ResponseFromResourceRegistry.
-					fromException(new Exception());
+					fromErrorCode(e);
 			return response;
 		}
 		return this.validateResponse(this.send());
@@ -65,7 +65,11 @@ public abstract class RequestToResourceRegistry {
 	 * @return the context client
 	 */
 	ResourceRegistryContextClient getContextClient() {
-		return resourceRegistryContextClient;
+		if (Objects.nonNull(this.resourceRegistryContextClient)) {
+			return this.resourceRegistryContextClient;
+		} else {
+			return ResourceRegistryContextClientFactory.create();
+		}
 	}
 
 	/**

webapp/src/test/java/org/gcube/resourcemanagement/manager/webapp/context/QueriesTest.java

@@ -91,8 +91,8 @@ public class QueriesTest {
 		if (skipTest)
 			return;
 		ResourceRegistryContextClient client = new ResourceRegistryContextClientImpl(RR);
-		Queries queries = new Queries();
-		assertFalse("Context does exist, but it should not", queries.contextExists(UUID.randomUUID(),client));
+		Queries queries = new Queries(client);
+		assertFalse("Context does exist, but it should not", queries.contextExists(UUID.randomUUID()));
 	}
 	
 	/**
@@ -103,8 +103,8 @@ public class QueriesTest {
 		if (skipTest)
 			return;
 		ResourceRegistryContextClient client = new ResourceRegistryContextClientImpl(RR);
-		Queries queries = new Queries();
-		Context context = queries.fetchContext(context1UUID,client);
+		Queries queries = new Queries(client);
+		Context context = queries.fetchContext(context1UUID);
 		assertNotNull("Context does not exist.", context);
 		assertEquals("Unexpected uuid for context", context1UUID, context.getHeader().getUUID());
 	}