From fff6dc5d43539af05ae2679640240b8545b36947 Mon Sep 17 00:00:00 2001
From: bculkin2442 <bjculkin@mix.wvu.edu>
Date: Tue, 10 May 2016 21:58:08 -0400
Subject: Added interface to JDK collector API

---
 .../java/bjc/utils/funcutils/CollectorUtils.java   | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 BJC-Utils2/src/main/java/bjc/utils/funcutils/CollectorUtils.java

(limited to 'BJC-Utils2/src/main/java/bjc/utils/funcutils/CollectorUtils.java')

diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcutils/CollectorUtils.java b/BJC-Utils2/src/main/java/bjc/utils/funcutils/CollectorUtils.java
new file mode 100644
index 0000000..a44059b
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcutils/CollectorUtils.java
@@ -0,0 +1,41 @@
+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 firstCollector
+	 *            The first collector to use
+	 * @param secondCollector
+	 *            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(
+					Collector<InitialType, AuxType1, FinalType1> firstCollector,
+					Collector<InitialType, AuxType2, FinalType2> secondCollector) {
+		return new CompoundCollector<>(firstCollector, secondCollector);
+	}
+}
-- 
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