Added code to GenericResource class to support the IS communication of VRE_Information_Space_Editor (admin) portlet

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/application-support-layer/applicationSupportLayerCore@82824 82a268e6-3cf1-43bd-a215-b396298e98cf

pom.xml

@@ -186,12 +186,13 @@
 		  <artifactId>xalan</artifactId>
 		  <version>2.7.1</version>
 		</dependency>
+
 		<dependency>
 		  <groupId>net.sourceforge.addressing</groupId>
 		  <artifactId>addressing</artifactId>
 		  <version>1.1.1</version>
 		</dependency>
-		
+
 		
 	</dependencies>
 

src/main/java/org/gcube/application/framework/core/util/GenericResource.java

@@ -14,6 +14,7 @@ import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.xpath.XPath;
 import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpression;
 import javax.xml.xpath.XPathExpressionException;
 import javax.xml.xpath.XPathFactory;
 
@@ -36,6 +37,7 @@ import org.gcube.resources.discovery.client.api.DiscoveryClient;
 import org.gcube.resources.discovery.client.queries.api.SimpleQuery;
 import org.gcube.resources.discovery.icclient.ICClient;
 import org.w3c.dom.Document;
+import org.w3c.dom.NodeList;
 import org.xml.sax.InputSource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -45,6 +47,7 @@ import static org.gcube.resources.discovery.icclient.ICFactory.*;
 import org.gcube.common.resources.gcore.Resource;
 import org.gcube.common.resources.gcore.Resource.Type;
 import org.gcube.common.resources.gcore.Resources;
+import org.gcube.common.resources.gcore.ServiceInstance;
 
 
 /**
@@ -148,7 +151,113 @@ public class GenericResource implements GenericResourceInfoI {
 		return  (List<ISGenericResource>) (CachesManager.getInstance().getGenericResourceCache().get(query).getValue());
 	}
 
+	/**
+	 *  retrieves from the IS all the Tree collections under the current scope
+	 * @param onlyUserCollections if true, it returns only user tree collections, otherwise it returns all tree collections
+	 * @return a hashmap containing the {collection id, collection resource}
+	 */
+	public HashMap<String,org.gcube.common.resources.gcore.GenericResource> getAllTreeCollections(boolean onlyUserCollections) {
+		// maybe should add the ScopeProvider.instance.set(session.getScope()) here and not in the constructors.
+		HashMap<String,org.gcube.common.resources.gcore.GenericResource> pairs = new HashMap<String, org.gcube.common.resources.gcore.GenericResource>();
+		SimpleQuery query = null;
+		try {
+			query = queryFor(org.gcube.common.resources.gcore.GenericResource.class);
+			query.addCondition("$resource/Profile/SecondaryType eq 'DataSource'");
+			if(onlyUserCollections)
+				query.addCondition("$resource/Profile/Body/SourceProperties/user eq 'true'");
+			List<org.gcube.common.resources.gcore.GenericResource> results = client.submit(query);
+			if (results == null || results.size() == 0)
+				logger.debug("Couldn't find any tree collections within that scope! Will return empty list.");
+			else
+				logger.debug("# of Tree Collections found: "+ results.size());
+			for (org.gcube.common.resources.gcore.GenericResource gr : results)
+				pairs.put(gr.id(), gr);
+		} catch (Exception e) {
+			logger.debug("Remote Exception:" + e.toString());
+		}
+		return pairs;	
+	}
 
+	/**
+	 * retrieves from the IS all the OpenSearch collections under the current scope
+	 * @param onlyUserCollections if true, it returns only user opensearch collections, otherwise it returns all opensearch collections
+	 * @return a hashmap containing the {collection id, collection resource}
+	 */
+	public HashMap<String,org.gcube.common.resources.gcore.GenericResource> getAllOpenSearchCollections(boolean onlyUserCollections) {
+		// maybe should add the ScopeProvider.instance.set(session.getScope()) here and not in the constructors.
+		HashMap<String,org.gcube.common.resources.gcore.GenericResource> pairs = new HashMap<String, org.gcube.common.resources.gcore.GenericResource>();
+		SimpleQuery query = null;
+		try {
+			query = queryFor(org.gcube.common.resources.gcore.GenericResource.class);
+			query.addCondition("$resource/Profile/SecondaryType eq 'GCUBECollection'");
+			if(onlyUserCollections)
+				query.addCondition("$resource/Profile/Body/CollectionInfo/user eq 'true'");
+			List<org.gcube.common.resources.gcore.GenericResource> results = client.submit(query);
+			if (results == null || results.size() == 0)
+				logger.debug("Couldn't find any OpenSearch collections within that scope! Will return empty list.");
+			else
+				logger.debug("# of OpenSearch Collections found: "+ results.size());
+			for (org.gcube.common.resources.gcore.GenericResource gr : results)
+				pairs.put(gr.id(), gr);
+		} catch (Exception e) {
+			logger.debug("Remote Exception:" + e.toString());
+		}
+		return pairs;	
+	}
+	
+	
+	
+	/**
+	 * 
+	 * @param collectionID The ID of the collection
+	 * @return the cardinality of the collection stored within the IS
+	 */
+	
+	public String getTreeResourceCardinality(String collectionID){
+		SimpleQuery query = queryFor(ServiceInstance.class);
+		query.addCondition("$resource/Data/*[ends-with(name(.),'ServiceName')]/text() eq 'tree-manager-service'");
+		query.addCondition("$resource/Data/*[ends-with(name(.),'SourceId')]/text() eq '"+collectionID+"'");
+		DiscoveryClient<ServiceInstance> client = clientFor(ServiceInstance.class);
+		List<ServiceInstance> resources = client.submit(query);
+//		logger.debug("Found " + resources.size() + " resources");
+		
+		String cardinality = "0";
+		if(resources.size()==0)
+			logger.debug("No collection '" + collectionID +"' found within scope " + ScopeProvider.instance.get());
+		else if(resources.size()==1){
+			NodeList nodes = resources.get(0).properties().customProperties().getChildNodes();
+			for(int i=0;i<nodes.getLength();i++)
+				if(nodes.item(i).getLocalName().equalsIgnoreCase("Cardinality"))
+					cardinality = nodes.item(i).getTextContent();
+			logger.debug("Cardinality of collection '" + collectionID +"' is " + cardinality);
+		}
+		else
+			logger.debug("ERROR ! Found more than 1 resources '" + collectionID +"' within scope " + ScopeProvider.instance.get());
+		return cardinality;
+	}
+	
+	
+	
+	
+	
+	/**
+	 * Gets the user field property from the generic resource body (profile/body) 
+	 * @return the property value
+	 * @throws XPathExpressionException 
+	 */
+	public boolean checkIfUser(org.gcube.common.resources.gcore.GenericResource resource) throws XPathExpressionException{
+		XPathExpression userExpression = null;
+		XPath xPath = XPathFactory.newInstance().newXPath();
+		try {
+			userExpression = xPath.compile("/SourceProperties/user");
+		} catch (XPathExpressionException e) {
+			logger.debug("Could not initiate the xpath expression for the user property");
+			e.printStackTrace();
+		}
+		return Boolean.parseBoolean(userExpression.evaluate(new InputSource(new StringReader(resource.profile().bodyAsString()))));
+	}
+	
+	
 	/**
 	 * Creates a new generic resource
 	 * @param genericResource the new generic resource
@@ -288,7 +397,6 @@ public class GenericResource implements GenericResourceInfoI {
 		return getGenericResource(query);
 	}
 
-	
 	/**
 	 * @param name the name of the generic resource
 	 * @return a list containing the generic resources that have as name the given
@@ -456,7 +564,7 @@ public class GenericResource implements GenericResourceInfoI {
 
 	private static List<String[]> retrieveGenericResourcesFromNameParts(String nameParts, String scope) throws Exception {
 		ScopeProvider.instance.set(scope);		
-		System.out.println("retrieveGenericResourcesFromNameParts");
+		logger.debug("retrieveGenericResourcesFromNameParts");
 		SimpleQuery query = queryFor(GenericResource.class);
 		//READ COMMENT BELOW !!!
 		query.addCondition("$resource/Profile/Name eq '"+nameParts+"'");

src/main/java/org/gcube/application/framework/core/util/GenericResourcesConstants.java

@@ -0,0 +1,18 @@
+package org.gcube.application.framework.core.util;
+
+
+/**
+ * 
+ * @author nikolas
+ *
+ */
+public class GenericResourcesConstants {
+
+		/**
+		 * Generic Resource constant for IS DataSources profile name
+		 */
+		public static final String DATASOURCENAMES = "GCUBECollection";
+	
+	
+	
+}