"strings"

	"gorm.io/gorm/clause"
)

// reg match english letters and midline
var regEnLetterAndMidline = regexp.MustCompile(`^[\w-]+$`)

type CheckConstraint struct {
	Name       string
	Constraint string // length(phone) >= 10
	*Field
}

func (chk *CheckConstraint) GetName() string { return chk.Name }

func (chk *CheckConstraint) Build() (sql string, vars []interface{}) {

        for (String excludePattern : excludedPackagePatterns) {
            if (excludePattern.endsWith(".**")) {
                String baseName = excludePattern.substring(0, excludePattern.length() - 3);
                excludedPrefixes.add(baseName + '.');
                excludedPackages.add(baseName);
            } else {
                excludedPackages.add(excludePattern);
            }
        }

	var n int
	switch {
	case f.Header.Length <= len7:
		bts[1] = byte(f.Header.Length)
		n = 2

	case f.Header.Length <= len16:
		bts[1] = 126
		binary.BigEndian.PutUint16(bts[2:4], uint16(f.Header.Length))
		n = 4

	case f.Header.Length <= len64:
		bts[1] = 127
		binary.BigEndian.PutUint64(bts[2:10], uint64(f.Header.Length))
		n = 10

	default:

    public void addRewriter(final SearchRequestParamsRewriter rewriter) {
        searchRequestParamsRewriters = Arrays.copyOf(searchRequestParamsRewriters, searchRequestParamsRewriters.length + 1);
        searchRequestParamsRewriters[searchRequestParamsRewriters.length - 1] = rewriter;
    }

    public interface SearchRequestParamsRewriter {
        SearchRequestParams rewrite(SearchRequestParams params);
    }

                        postcard.setFrom(fessConfig.getMailFromAddress(), fessConfig.getMailFromName());
                        postcard.addReplyTo(fessConfig.getMailReturnPath());
                        if (toAddresses.length > 0) {
                            stream(toAddresses).of(stream -> stream.map(String::trim).forEach(address -> {
                                postcard.addTo(address);
                            }));

        return output;
    }

    public boolean isUpdated() {
        return newInputs != null && newOutput != null;
    }

    public boolean isDeleted() {
        return isUpdated() && newInputs.length == 0;
    }

    public void sort() {
        if (inputs != null) {
            Arrays.sort(inputs);
        }
        if (newInputs != null) {
            Arrays.sort(newInputs);
        }
    }

   */
  T create(Object... elements);

  /**
   * Helper method to create an array of the appropriate type used by this generator. The returned
   * array will contain only nulls.
   */
  E[] createArray(int length);

  /**
   * Returns the iteration ordering of elements, given the order in which they were added to the
   * container. This method may return the original list unchanged, the original list modified in

	}
	r.buf[r.w] = c
	r.w++

	if r.w == r.size {
		r.w = 0
	}
	if r.w == r.r {
		r.isFull = true
	}

	return nil
}

// Length return the length of available read bytes.
func (r *RingBuffer) Length() int {
	r.mu.Lock()
	defer r.mu.Unlock()

	if r.w == r.r {
		if r.isFull {
			return r.size
		}
		return 0
	}

	if r.w > r.r {
		return r.w - r.r

			var tmp [4]byte
			_, err := io.ReadFull(respBody, tmp[:])
			if err != nil {
				return err
			}
			length := binary.LittleEndian.Uint32(tmp[:])
			n, err := io.CopyBuffer(w, io.LimitReader(respBody, int64(length)), buf)
			if err != nil {
				return err
			}
			if n != int64(length) {
				return io.ErrUnexpectedEOF
			}
			continue
		case 32:
			continue
		default:

        if ( from.hashesExternal ) {
            to.hashesExternal = true;
            to.ansiHash = from.ansiHash != null ? Arrays.copyOf(from.ansiHash, from.ansiHash.length) : null;
            to.unicodeHash = from.unicodeHash != null ? Arrays.copyOf(from.unicodeHash, from.unicodeHash.length) : null;
        }
        else {
            NtlmPasswordAuthenticator.cloneInternal(to, from);
        }
    }


    /**