1 files changed, 59 insertions, 0 deletions
diff --git a/dcaedt_catalog/commons/src/main/java/org/onap/sdc/dcae/catalog/commons/ListBuilder.java b/dcaedt_catalog/commons/src/main/java/org/onap/sdc/dcae/catalog/commons/ListBuilder.java
new file mode 100644
index 0000000..2538893
--- /dev/null
+++ b/dcaedt_catalog/commons/src/main/java/org/onap/sdc/dcae/catalog/commons/ListBuilder.java
@@ -0,0 +1,59 @@
+package org.onap.sdc.dcae.catalog.commons;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.onap.sdc.dcae.catalog.commons.ListBuilder;
+
+import java.util.LinkedList;
+
+public class ListBuilder<T> {
+
+	private List<T> list;
+
+	public ListBuilder() {
+		this.list = new LinkedList<T>();
+	}
+
+	public boolean isEmpty() {
+		return this.list.isEmpty();
+	}
+
+	public ListBuilder add(T theValue) {
+		this.list.add(theValue);
+		return this;
+	}
+
+	public ListBuilder addAll(final Iterable<? extends T> theValues) {
+		for (final T val : theValues) {
+			this.list.add(val);
+		}
+		return this;
+	}
+
+	public ListBuilder addAll(final List<? extends T> theList) {
+		this.list.addAll(theList);
+		return this;
+	}  
+
+	public ListBuilder addAll(final T[] theArray) {
+		for (T t: theArray) this.list.add(t);
+		return this;
+	}
+  
+	public List build() {
+		return this.list;
+	}
+
+	public List buildOpt() {
+		return this.list.isEmpty() ? null : this.list;
+	}
+
+	public static <V> List<V> asList(V[] theArray) {
+		return Arrays.asList(theArray);
+	}
+	
+	public static <V> List<V> asListOpt(V[] theArray) {
+		return (theArray != null && theArray.length > 0) ? Arrays.asList(theArray) : null;
+	}
+}