denis-chudov commented on code in PR #5092:
URL: https://github.com/apache/ignite-3/pull/5092#discussion_r1961535228
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modules/core/src/main/java/org/apache/ignite/internal/util/io/IgniteDataInput.java:
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@@ -418,4 +421,61 @@ interface Materializer<T> {
*/
T materialize(byte[] buffer, int offset, int length);
}
+
+ /**
+ * Reads a collection.
+ *
+ * @param collectionSupplier Supplier to create a collection.
+ * @param elementReader Function to read an element.
+ * @return Collection.
+ */
+ default <T, C extends Collection<T>> C readCollection(
+ Supplier<C> collectionSupplier,
+ ObjectReader<T> elementReader
+ ) throws IOException {
+ int size = readVarIntAsInt();
+
+ C collection = collectionSupplier.get();
+
+ for (int i = 0; i < size; i++) {
+ collection.add(elementReader.read(this));
+ }
+
+ return collection;
+ }
+
+ /**
+ * Reads a map.
+ *
+ * @param mapSupplier Supplier to create a map.
+ * @param keyReader Function to read a key.
+ * @param valueReader Function to read a value.
+ * @return Map.
+ */
+ default <K, C, V extends C, M extends Map<K, V>> M readMap(
+ Supplier<M> mapSupplier,
Review Comment:
replaced with map
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