1 files changed, 74 insertions, 0 deletions
diff --git a/winery/org.eclipse.winery.topologymodeler/src/main/java/org/eclipse/winery/topologymodeler/addons/topologycompleter/placeholderhandling/PlaceHolderHandler.java b/winery/org.eclipse.winery.topologymodeler/src/main/java/org/eclipse/winery/topologymodeler/addons/topologycompleter/placeholderhandling/PlaceHolderHandler.java
new file mode 100644
index 0000000..a384e91
--- /dev/null
+++ b/winery/org.eclipse.winery.topologymodeler/src/main/java/org/eclipse/winery/topologymodeler/addons/topologycompleter/placeholderhandling/PlaceHolderHandler.java
@@ -0,0 +1,74 @@
+/*******************************************************************************
+ * Copyright (c) 2013 Pascal Hirmer.
+ * 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:
+ *    Pascal Hirmer - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.winery.topologymodeler.addons.topologycompleter.placeholderhandling;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.eclipse.winery.model.tosca.TNodeTemplate;
+import org.eclipse.winery.model.tosca.TNodeType;
+import org.eclipse.winery.topologymodeler.addons.topologycompleter.analyzer.TOSCAAnalyzer;
+import org.eclipse.winery.topologymodeler.addons.topologycompleter.helper.Constants;
+
+/**
+ * This class finds suitable replacement types for a place holder.
+ */
+public class PlaceHolderHandler {
+
+	/**
+	 * This method returns a suitable {@link TNodeType} to replace a given {@link TNodeTemplate} placeholder.
+	 * A suitable Node Type to replace a placeholder is matched by its type. If the type of a NodeType equals the identifier of a placeholder
+	 * it can be used to replace it.
+	 *
+	 * @param nodeTemplate
+	 *            the placeholder to be replaced
+	 * @param toscaAnalyzer
+	 *            the {@link TOSCAAnalyzer} object to access the data model
+	 *
+	 * @return a list of {@link TNodeType}s to replace the placeholder
+	 */
+	public static List<TNodeType> getSuitableNodeTypes(TNodeTemplate nodeTemplate, TOSCAAnalyzer toscaAnalyzer) {
+
+		List<TNodeType> suitableNodeTypes = new ArrayList<>();
+
+		// TODO: matching the name without a name space is unsafe and only works assuming that no one creates generic NodeTemplates with the same name as the place holders.
+		// However a NodeTemplate name does not have a name space.
+		if (nodeTemplate.getName().equals(Constants.PlaceHolders.WEBSERVER.toString())) {
+			for (TNodeType nodeType : toscaAnalyzer.getNodeTypes()) {
+				if (nodeType.getDerivedFrom() != null && nodeType.getDerivedFrom().getTypeRef().getLocalPart().equals(Constants.PlaceHolders.WEBSERVER.toString())) {
+					suitableNodeTypes.add(nodeType);
+				}
+			}
+		} else if (nodeTemplate.getName().equals(Constants.PlaceHolders.DATABASE.toString())) {
+			for (TNodeType nodeType : toscaAnalyzer.getNodeTypes()) {
+				if (nodeType.getDerivedFrom() != null && nodeType.getDerivedFrom().getTypeRef().getLocalPart().equals(Constants.PlaceHolders.DATABASE.toString())) {
+					suitableNodeTypes.add(nodeType);
+				}
+			}
+		} else if (nodeTemplate.getName().equals(Constants.PlaceHolders.OPERATINGSYSTEM.toString())) {
+			for (TNodeType nodeType : toscaAnalyzer.getNodeTypes()) {
+				if (nodeType.getDerivedFrom() != null && nodeType.getDerivedFrom().getTypeRef().getLocalPart().equals(Constants.PlaceHolders.OPERATINGSYSTEM.toString())) {
+					suitableNodeTypes.add(nodeType);
+				}
+			}
+		} else if (nodeTemplate.getName().equals(Constants.PlaceHolders.CLOUDPROVIDER.toString())) {
+			for (TNodeType nodeType : toscaAnalyzer.getNodeTypes()) {
+				if (nodeType.getDerivedFrom() != null && nodeType.getDerivedFrom().getTypeRef().getLocalPart().equals(Constants.PlaceHolders.CLOUDPROVIDER.toString())) {
+					suitableNodeTypes.add(nodeType);
+				}
+			}
+		}
+
+		return suitableNodeTypes;
+	}
+}