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-rw-r--r--vespajlib/src/main/java/com/yahoo/tensor/functions/Slice.java14
1 files changed, 9 insertions, 5 deletions
diff --git a/vespajlib/src/main/java/com/yahoo/tensor/functions/Slice.java b/vespajlib/src/main/java/com/yahoo/tensor/functions/Slice.java
index da7581c39f9..e3464255fac 100644
--- a/vespajlib/src/main/java/com/yahoo/tensor/functions/Slice.java
+++ b/vespajlib/src/main/java/com/yahoo/tensor/functions/Slice.java
@@ -238,17 +238,21 @@ public class Slice<NAMETYPE extends Name> extends PrimitiveTensorFunction<NAMETY
TensorType type = context.typeContext().isPresent() ? owner.argument.type(context.typeContext().get()) : null;
if (type == null || type.dimensions().size() != 1)
throw new IllegalArgumentException("The tensor dimension name being sliced by " + owner +
- " cannot be uniquely resolved. Use the full form " +
- "slice{myDimensionName: ...");
+ " cannot be uniquely resolved. Use the full form: " +
+ "'slice{myDimensionName:" + valueToString(context) + "}'");
else
dimensionName = Optional.of(type.dimensions().get(0).name());
}
dimensionName.ifPresent(d -> b.append(d).append(":"));
+ b.append(valueToString(context));
+ return b.toString();
+ }
+
+ private String valueToString(ToStringContext<NAMETYPE> context) {
if (label != null)
- b.append(label);
+ return label;
else
- b.append(index.toString(context));
- return b.toString();
+ return index.toString(context);
}
}