final String pref = ComponentUtil.getFessConfig().getQueryJsonDefaultPreference();
        if (PREFERENCE_QUERY.equals(pref)) {
            return Integer.toString(query.hashCode());
        }
        if (StringUtil.isNotBlank(pref)) {
            return pref;
        }
        return null;
    }

    }

    def "serializes version constraint"() {
        given:
        ModuleComponentSelector selection = DefaultModuleComponentSelector.newSelector(DefaultModuleIdentifier.newId('group-one', 'name-one'), constraint('req', 'pref', 'strict', ['rej']))

        when:
        ModuleComponentSelector result = serialize(selection, serializer)

        then:
        result.group == 'group-one'
        result.module == 'name-one'

	if err != nil {
		return nil, handlePlan9DNSError(err, name)
	}
	for _, line := range lines {
		f := getFields(line)
		if len(f) < 4 {
			continue
		}
		if pref, _, ok := dtoi(f[2]); ok {
			mx = append(mx, &MX{absDomainName(f[3]), uint16(pref)})
		}
	}
	byPref(mx).sort()
	return
}

func (r *Resolver) lookupNS(ctx context.Context, name string) (ns []*NS, err error) {

	globalNetPerfRX              netPerfRX
	globalSiteNetPerfRX          netPerfRX
	globalObjectPerfBucket       = "minio-perf-test-tmp-bucket"
	globalObjectPerfUserMetadata = "X-Amz-Meta-Minio-Object-Perf" // Clients can set this to bypass S3 API service freeze. Used by object pref tests.

	// MinIO version unix timestamp
	globalVersionUnix uint64

	// MinIO client
	globalMinioClient *minio.Client

		if err != nil {
			return nil, &DNSError{
				Err:    "cannot unmarshal DNS message",
				Name:   name,
				Server: server,
			}
		}
		mxs = append(mxs, &MX{Host: mx.MX.String(), Pref: mx.Pref})

	}
	byPref(mxs).sort()
	return mxs, nil
}

// goLookupNS returns the NS records for name.
func (r *Resolver) goLookupNS(ctx context.Context, name string) ([]*NS, error) {

	SYS_SWAPOFF                = 529 // { int swapoff(char *name); }
	SYS_VQUOTACTL              = 530 // { int vquotactl(const char *path, struct plistref *pref); }
	SYS_LINKAT                 = 531 // { int linkat(int fd1, char *path1, int fd2, char *path2, int flags); }
	SYS_EACCESS                = 532 // { int eaccess(char *path, int flags); }

				break
			}
		}
	}
}

func mxString(mxs []*MX) string {
	var buf strings.Builder
	sep := ""
	fmt.Fprintf(&buf, "[")
	for _, mx := range mxs {
		fmt.Fprintf(&buf, "%s%s:%d", sep, mx.Host, mx.Pref)
		sep = " "
	}
	fmt.Fprintf(&buf, "]")
	return buf.String()
}

func nsString(nss []*NS) string {
	var buf strings.Builder
	sep := ""
	fmt.Fprintf(&buf, "[")
	for _, ns := range nss {

		Downloads:     totalBytesRead,
		UploadTimes:   uploadTimes,
		DownloadTimes: downloadTimes,
		DownloadTTFB:  downloadTTFB,
		Error:         retError,
	}, nil
}

// To collect RX stats during "mc support perf net"
// RXSample holds the RX bytes for the duration between
// the last peer to connect and the first peer to disconnect.
// This is to improve the RX throughput accuracy.
type netPerfRX struct {

				t.Errorf("Case %d: unexpected err: %v", i, err)
			}

			oRef, lRef, skipRef, snRef, psRef := decryptedRangeRef(test.decSizes, skipLen, readLen, false)
			if o != oRef || l != lRef || skip != skipRef || sn != snRef || ps != psRef {
				t.Errorf("Case %d: test failed: %d %d %d %d %d (Ref: %d %d %d %d %d)",
					i, o, l, skip, sn, ps, oRef, lRef, skipRef, snRef, psRef)
			}
		}

		// Read the last 6Mib+1 bytes of the (decrypted)

                        <li><a href="../userguide/dependency_management_basics.html">6. Dependency Management Basics</a></li>
                        <li><a href="../userguide/task_basics.html">7. Task Basics</a></li>
                        <li><a href="../userguide/plugin_basics.html">8. Plugins Basics</a></li>