ReadOnlyStringIterator Class — netty Architecture

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/ReadOnlyHttpHeaders.java lines 328–374

    private final class ReadOnlyStringIterator implements Map.Entry<String, String>,
            Iterator<Map.Entry<String, String>> {
        private String key;
        private String value;
        private int nextNameIndex;

        @Override
        public boolean hasNext() {
            return nextNameIndex != nameValuePairs.length;
        }

        @Override
        public Map.Entry<String, String> next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            key = nameValuePairs[nextNameIndex].toString();
            value = nameValuePairs[nextNameIndex + 1].toString();
            nextNameIndex += 2;
            return this;
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException("read only");
        }

        @Override
        public String getKey() {
            return key;
        }

        @Override
        public String getValue() {
            return value;
        }

        @Override
        public String setValue(String value) {
            throw new UnsupportedOperationException("read only");
        }

        @Override
        public String toString() {
            return key + '=' + value;
        }
    }