liyafan82 commented on a change in pull request #6912:
URL: https://github.com/apache/arrow/pull/6912#discussion_r416553407
##########
File path:
java/vector/src/main/java/org/apache/arrow/vector/util/ValueVectorUtility.java
##########
@@ -82,4 +89,43 @@ public static String getToString(ValueVector vector, int
start, int end) {
return sb.toString();
}
+
+ /**
+ * Validate field vector.
+ */
+ public static void validate(FieldVector vector) {
+ Preconditions.checkNotNull(vector);
+
+ ArrowType arrowType = vector.getField().getType();
+ int typeBufferCount = TypeLayout.getTypeBufferCount(arrowType);
+ TypeLayout typeLayout = TypeLayout.getTypeLayout(arrowType);
+
+ if (vector.getValueCount() < 0) {
+ throw new RuntimeException("vector valueCount is negative");
Review comment:
I think IllegalArgumentException is better?
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