From 2da2d410e5bd679b356b079972b441695c353833 Mon Sep 17 00:00:00 2001 From: Marek Gradzki Date: Thu, 2 Jun 2016 13:23:39 +0200 Subject: Intializers for the new vlan model Change-Id: I513f0b190e9d9e669663a9a216e7c72b1ebeb10d Signed-off-by: Marek Gradzki --- .../io/fd/honeycomb/v3po/translate/util/RWUtils.java | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'v3po/translate-utils') diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java index dbfed04b0..b712e159c 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java @@ -21,13 +21,15 @@ import com.google.common.base.Preconditions; import com.google.common.base.Predicate; import com.google.common.collect.Iterables; import com.google.common.collect.Maps; +import io.fd.honeycomb.v3po.translate.SubtreeManager; import io.fd.honeycomb.v3po.translate.read.ChildReader; import io.fd.honeycomb.v3po.translate.write.ChildWriter; -import io.fd.honeycomb.v3po.translate.SubtreeManager; import java.util.Collection; import java.util.Collections; import java.util.List; import java.util.Map; +import java.util.stream.Collector; +import java.util.stream.Collectors; import javax.annotation.Nonnull; import org.opendaylight.yangtools.yang.binding.Augmentation; import org.opendaylight.yangtools.yang.binding.ChildOf; @@ -40,6 +42,21 @@ public final class RWUtils { private RWUtils() {} + /** + * Collector expecting only a single resulting item from a stream + */ + public static Collector singleItemCollector() { + return Collectors.collectingAndThen( + Collectors.toList(), + list -> { + if (list.size() != 1) { + throw new IllegalStateException("Unexpected size of list: " + list + ". Single item expected"); + } + return list.get(0); + } + ); + } + /** * Find next item in ID after provided type */ -- cgit 1.2.3-korg