Claudenw commented on code in PR #331:
URL:
https://github.com/apache/commons-collections/pull/331#discussion_r958112564
##########
src/main/java/org/apache/commons/collections4/bloomfilter/CountingBloomFilter.java:
##########
@@ -77,6 +79,92 @@ public interface CountingBloomFilter extends BloomFilter,
BitCountProducer {
// Modification Operations
+ /**
+ * Merges the specified Bloom filter into this Bloom filter.
+ *
+ * <p>Specifically: all counts for the indexes identified by the {@code
other} filter will be incremented by 1,</p>
+ *
+ * <p>Note: If the other filter is a counting Bloom filter the index
counts are ignored and it is treated as an
+ * IndexProducer.</p>
+ *
+ * <p>This method will return {@code true} if the filter is valid after
the operation.</p>
+ *
+ * @param other the other Bloom filter
+ * @return {@code true} if the removal was successful and the state is
valid
+ * @see #isValid()
+ * @see #add(BitCountProducer)
+ */
+ default boolean merge(final BloomFilter other) {
+ Objects.requireNonNull(other, "other");
+ try {
+ return add(BitCountProducer.from(other));
+ } catch (IndexOutOfBoundsException e) {
+ throw new IllegalArgumentException(e);
+ }
+ }
+
+ /**
+ * Merges the specified Hasher into this Bloom filter.
+ *
+ * <p>Specifically: all counts for the unique indexes identified by the
{@code hasher} will be incremented by 1,</p>
+ *
+ * <p>This method will return {@code true} if the filter is valid after
the operation.</p>
+ *
+ * @param hasher the hasher
+ * @return {@code true} if the removal was successful and the state is
valid
+ * @see #isValid()
+ * @see #add(BitCountProducer)
+ */
+ default boolean merge(final Hasher hasher) {
+ Objects.requireNonNull(hasher, "hasher");
+ try {
+ return
add(BitCountProducer.from(hasher.uniqueIndices(getShape())));
+ } catch (IndexOutOfBoundsException e) {
+ throw new IllegalArgumentException(
+ String.format("Filter only accepts values in the [0,%d)
range", getShape().getNumberOfBits()));
Review Comment:
fixed
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