Github user greghogan commented on a diff in the pull request: https://github.com/apache/flink/pull/1191#discussion_r41635292 --- Diff: flink-java/src/main/java/org/apache/flink/api/java/typeutils/ValueTypeInfo.java --- @@ -51,7 +51,18 @@ public class ValueTypeInfo<T extends Value> extends TypeInformation<T> implements AtomicType<T> { private static final long serialVersionUID = 1L; - + + public static final ValueTypeInfo<BooleanValue> BOOLEAN_VALUE_TYPE_INFO = new ValueTypeInfo<>(BooleanValue.class); + public static final ValueTypeInfo<ByteValue> BYTE_VALUE_TYPE_INFO = new ValueTypeInfo<>(ByteValue.class); + public static final ValueTypeInfo<CharValue> CHAR_VALUE_TYPE_INFO = new ValueTypeInfo<>(CharValue.class); + public static final ValueTypeInfo<DoubleValue> DOUBLE_VALUE_TYPE_INFO = new ValueTypeInfo<>(DoubleValue.class); + public static final ValueTypeInfo<FloatValue> FLOAT_VALUE_TYPE_INFO = new ValueTypeInfo<>(FloatValue.class); + public static final ValueTypeInfo<IntValue> INT_VALUE_TYPE_INFO = new ValueTypeInfo<>(IntValue.class); + public static final ValueTypeInfo<LongValue> LONG_VALUE_TYPE_INFO = new ValueTypeInfo<>(LongValue.class); + public static final ValueTypeInfo<NullValue> NULL_VALUE_TYPE_INFO = new ValueTypeInfo<>(NullValue.class); + public static final ValueTypeInfo<ShortValue> SHORT_VALUE_TYPE_INFO = new ValueTypeInfo<>(ShortValue.class); + public static final ValueTypeInfo<StringValue> STRING_VALUE_TYPE_INFO = new ValueTypeInfo<>(StringValue.class); --- End diff -- Yes, these follow the form of `BasicTypeInfo` (which, admittedly, are much longer instantiations). These are used extensively in `ValueCollectionDataSets` for creation of `TupleTypeInfo` and which mirrors `CollectionDataSets` which uses the `BasicTypeInfo` statics for the same purpose. I am surprised IntelliJ is marking public members as unused.
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