1 files changed, 114 insertions, 0 deletions
diff --git a/winery/org.eclipse.winery.repository/src/main/java/org/eclipse/winery/repository/resources/_support/collections/withoutid/EntityWithoutIdCollectionResource.java b/winery/org.eclipse.winery.repository/src/main/java/org/eclipse/winery/repository/resources/_support/collections/withoutid/EntityWithoutIdCollectionResource.java
new file mode 100644
index 0000000..8255f5d
--- /dev/null
+++ b/winery/org.eclipse.winery.repository/src/main/java/org/eclipse/winery/repository/resources/_support/collections/withoutid/EntityWithoutIdCollectionResource.java
@@ -0,0 +1,114 @@
+/*******************************************************************************
+ * Copyright (c) 2012-2013 University of Stuttgart.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and the Apache License 2.0 which both accompany this distribution,
+ * and are available at http://www.eclipse.org/legal/epl-v10.html
+ * and http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Contributors:
+ *     Oliver Kopp - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.winery.repository.resources._support.collections.withoutid;
+
+import java.lang.reflect.Constructor;
+import java.util.List;
+
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+
+import org.eclipse.winery.common.Util;
+import org.eclipse.winery.repository.Utils;
+import org.eclipse.winery.repository.resources.AbstractComponentInstanceResource;
+import org.eclipse.winery.repository.resources._support.IPersistable;
+import org.eclipse.winery.repository.resources._support.collections.EntityCollectionResource;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.sun.jersey.api.NotFoundException;
+
+/**
+ * Class managing a list of entities. It is intended to manage subresources,
+ * where the TOSCA specification did not specify a unique key. Currently, the
+ * hashCode of the XML String representation is used. If other representation
+ * should be used, the method {@code getEntityResource} has to be overriden.
+ * 
+ * @param <EntityResourceT> the resource modeling the entity
+ * @param <EntityT> the entity type of single items in the list
+ */
+public abstract class EntityWithoutIdCollectionResource<EntityResourceT extends EntityWithoutIdResource<EntityT>, EntityT> extends EntityCollectionResource<EntityResourceT, EntityT> {
+	
+	private static final Logger logger = LoggerFactory.getLogger(EntityWithoutIdCollectionResource.class);
+	
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	public EntityWithoutIdCollectionResource(Class<EntityResourceT> entityResourceTClazz, Class<EntityT> entityTClazz, List<EntityT> list, IPersistable res) {
+		super(entityResourceTClazz, entityTClazz, list, res);
+	}
+	
+	/**
+	 * Method searching the list for an id with the hashcode instead of
+	 * getId(EntityT)
+	 */
+	@Override
+	@Path("{id}/")
+	public EntityResourceT getEntityResource(@PathParam("id") String id) {
+		id = Util.URLdecode(id);
+		int idInt;
+		try {
+			idInt = Integer.parseInt(id);
+		} catch (java.lang.NumberFormatException e) {
+			throw new NotFoundException(id + " is not a valid id");
+		}
+		EntityT entity = null;
+		int idx = -1;
+		for (EntityT c : this.list) {
+			idx++;
+			// speed optimization - instead of using getId() we directly use the hash code
+			int hash = Utils.getXMLAsString(c).hashCode();
+			if (hash == idInt) {
+				entity = c;
+				break;
+			}
+		}
+		if (entity == null) {
+			throw new NotFoundException();
+		} else {
+			return this.getEntityResourceInstance(entity, idx);
+		}
+	}
+	
+	@Override
+	public String getId(EntityT entity) {
+		return IdDeterminationWithHashCode.INSTANCE.getId(entity);
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected EntityResourceT getEntityResourceInstance(EntityT entity, int idx) {
+		Constructor<EntityResourceT> constructor;
+		try {
+			constructor = this.entityResourceTClazz.getConstructor(this.entityTClazz, int.class, List.class, AbstractComponentInstanceResource.class);
+		} catch (Exception e) {
+			try {
+				constructor = this.entityResourceTClazz.getConstructor(this.entityTClazz, int.class, List.class, IPersistable.class);
+			} catch (NoSuchMethodException | SecurityException e1) {
+				EntityWithoutIdCollectionResource.logger.debug("Could not get constructor", e);
+				throw new IllegalStateException(e);
+			}
+		}
+		EntityResourceT newInstance;
+		try {
+			newInstance = constructor.newInstance(entity, idx, this.list, this.res);
+		} catch (Exception e) {
+			EntityWithoutIdCollectionResource.logger.debug("Could not instantiate class", e);
+			throw new IllegalStateException(e);
+		}
+		return newInstance;
+	}
+	
+}