Merge pull request #81 from nimble-platform/staging

Staging

data-model/solr-data-model/src/main/java/eu/nimble/service/model/solr/common/DynamicName.java

@@ -0,0 +1,44 @@
+package eu.nimble.service.model.solr.common;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.jena.ext.com.google.common.base.CaseFormat;
+import org.springframework.util.StringUtils;
+
+public interface DynamicName {
+	/**
+	 * Static (mixin) helper method transforming a qualifier into a valid dynamic field part
+	 * @param qualifier The qualifiers used when adding dynamic properties
+	 */
+	static String getDynamicFieldPart(String ... qualifier) {
+		List<String> parts = new ArrayList<>();
+		for ( String part : qualifier ) {
+			parts.add(getDynamicFieldPart(part));
+		}
+		return getDynamicFieldPart(String.join("_", parts));
+
+
+	}
+	/**
+	 * Static Helper for creating dynamic field parts where
+	 * non alphanumeric characters are deleted and whitespaces are 
+	 * replaces with underscores. Finally, the value is formatted
+	 * in CamelCase format starting with lower case.
+	 * As an example, the text "<b>First Name</b>" results in in a valid indexing name "<code>firstName</code>". 
+	 * @param part
+	 * @see CaseFormat#LOWER_CAMEL
+	 * @return
+	 */
+	static String getDynamicFieldPart(String part) {
+		if (! StringUtils.hasText(part)) {
+			// when no unit code specified - use "undefined";
+			return "undefined";
+		}		
+		String dynamicFieldPart = CaseFormat.UPPER_CAMEL.to(CaseFormat.UPPER_UNDERSCORE, part);
+		dynamicFieldPart = dynamicFieldPart.replaceAll("[^a-zA-Z0-9_ ]", "");
+		dynamicFieldPart = dynamicFieldPart.trim().replaceAll(" ", "_").toUpperCase();
+		dynamicFieldPart = CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, dynamicFieldPart);
+		return dynamicFieldPart;
+	}
+}