1 files changed, 39 insertions, 0 deletions
diff --git a/base/src/main/java/bjc/utils/funcutils/CollectorUtils.java b/base/src/main/java/bjc/utils/funcutils/CollectorUtils.java
new file mode 100644
index 0000000..a044bfd
--- /dev/null
+++ b/base/src/main/java/bjc/utils/funcutils/CollectorUtils.java
@@ -0,0 +1,39 @@
+package bjc.utils.funcutils;
+
+import java.util.stream.Collector;
+
+import bjc.utils.data.IHolder;
+import bjc.utils.data.IPair;
+
+/**
+ * Utilities for producing implementations of {@link Collector}
+ *
+ * @author ben
+ *
+ */
+public class CollectorUtils {
+	/**
+	 * Create a collector that applies two collectors at once
+	 *
+	 * @param <InitialType>
+	 *                The type of the collection to collect from
+	 * @param <AuxType1>
+	 *                The intermediate type of the first collector
+	 * @param <AuxType2>
+	 *                The intermediate type of the second collector
+	 * @param <FinalType1>
+	 *                The final type of the first collector
+	 * @param <FinalType2>
+	 *                The final type of the second collector
+	 * @param first
+	 *                The first collector to use
+	 * @param second
+	 *                The second collector to use
+	 * @return A collector that functions as mentioned above
+	 */
+	public static <InitialType, AuxType1, AuxType2, FinalType1, FinalType2> Collector<InitialType, IHolder<IPair<AuxType1, AuxType2>>, IPair<FinalType1, FinalType2>> compoundCollect(
+			final Collector<InitialType, AuxType1, FinalType1> first,
+			final Collector<InitialType, AuxType2, FinalType2> second) {
+		return new CompoundCollector<>(first, second);
+	}
+}