Golang camtypes.ClaimsByDate函數代碼示例

// GetClaims returns the claims on req.Permanode signed by sh.owner.
func (sh *Handler) GetClaims(req *ClaimsRequest) (*ClaimsResponse, error) {
	if !req.Permanode.Valid() {
		return nil, errors.New("Error getting claims: nil permanode.")
	}
	var claims []camtypes.Claim
	claims, err := sh.index.AppendClaims(claims, req.Permanode, sh.owner, req.AttrFilter)
	if err != nil {
		return nil, fmt.Errorf("Error getting claims of %s: %v", req.Permanode.String(), err)
	}
	sort.Sort(camtypes.ClaimsByDate(claims))
	var jclaims []*ClaimsItem
	for _, claim := range claims {
		jclaim := &ClaimsItem{
			BlobRef:   claim.BlobRef,
			Signer:    claim.Signer,
			Permanode: claim.Permanode,
			Date:      types.Time3339(claim.Date),
			Type:      claim.Type,
			Attr:      claim.Attr,
			Value:     claim.Value,
		}
		jclaims = append(jclaims, jclaim)
	}

	res := &ClaimsResponse{
		Claims: jclaims,
	}
	return res, nil
}

func (dr *DescribeRequest) populatePermanodeFields(pi *DescribedPermanode, pn, signer blob.Ref, depth int) {
	pi.Attr = make(url.Values)
	attr := pi.Attr

	claims, err := dr.sh.index.AppendClaims(nil, pn, signer, "")
	if err != nil {
		log.Printf("Error getting claims of %s: %v", pn.String(), err)
		dr.addError(pn, fmt.Errorf("Error getting claims of %s: %v", pn.String(), err))
		return
	}

	sort.Sort(camtypes.ClaimsByDate(claims))
claimLoop:
	for _, cl := range claims {
		if !dr.At.IsZero() {
			if cl.Date.After(dr.At.Time()) {
				continue
			}
		}
		switch cl.Type {
		default:
			continue
		case "del-attribute":
			if cl.Value == "" {
				delete(attr, cl.Attr)
			} else {
				sl := attr[cl.Attr]
				filtered := make([]string, 0, len(sl))
				for _, val := range sl {
					if val != cl.Value {
						filtered = append(filtered, val)
					}
				}
				attr[cl.Attr] = filtered
			}
		case "set-attribute":
			delete(attr, cl.Attr)
			fallthrough
		case "add-attribute":
			if cl.Value == "" {
				continue
			}
			sl, ok := attr[cl.Attr]
			if ok {
				for _, exist := range sl {
					if exist == cl.Value {
						continue claimLoop
					}
				}
			} else {
				sl = make([]string, 0, 1)
				attr[cl.Attr] = sl
			}
			attr[cl.Attr] = append(sl, cl.Value)
		}
		pi.ModTime = cl.Date
	}

	// Descend into any references in current attributes.
	for key, vals := range attr {
		dr.describeRefs(key, depth)
		for _, v := range vals {
			dr.describeRefs(v, depth)
		}
	}
}

func (dr *DescribeRequest) populatePermanodeFields(pi *DescribedPermanode, pn, signer blob.Ref, depth int) {
	pi.Attr = make(url.Values)
	attr := pi.Attr

	claims, err := dr.sh.index.AppendClaims(nil, pn, signer, "")
	if err != nil {
		log.Printf("Error getting claims of %s: %v", pn.String(), err)
		dr.addError(pn, fmt.Errorf("Error getting claims of %s: %v", pn.String(), err))
		return
	}

	sort.Sort(camtypes.ClaimsByDate(claims))
claimLoop:
	for _, cl := range claims {
		switch cl.Type {
		default:
			continue
		case "del-attribute":
			if cl.Value == "" {
				delete(attr, cl.Attr)
			} else {
				sl := attr[cl.Attr]
				filtered := make([]string, 0, len(sl))
				for _, val := range sl {
					if val != cl.Value {
						filtered = append(filtered, val)
					}
				}
				attr[cl.Attr] = filtered
			}
		case "set-attribute":
			delete(attr, cl.Attr)
			fallthrough
		case "add-attribute":
			if cl.Value == "" {
				continue
			}
			sl, ok := attr[cl.Attr]
			if ok {
				for _, exist := range sl {
					if exist == cl.Value {
						continue claimLoop
					}
				}
			} else {
				sl = make([]string, 0, 1)
				attr[cl.Attr] = sl
			}
			attr[cl.Attr] = append(sl, cl.Value)
		}
		pi.ModTime = cl.Date
	}

	// If the content permanode is now known, look up its type
	if content, ok := attr["camliContent"]; ok && len(content) > 0 {
		if cbr, ok := blob.Parse(content[len(content)-1]); ok {
			dr.Describe(cbr, depth-1)
		}
	}

	// Resolve children
	if members, ok := attr["camliMember"]; ok {
		for _, member := range members {
			if membr, ok := blob.Parse(member); ok {
				dr.Describe(membr, depth-1)
			}
		}
	}

	// Resolve path elements
	for k, vv := range attr {
		if !strings.HasPrefix(k, "camliPath:") {
			continue
		}
		for _, brs := range vv {
			if br, ok := blob.Parse(brs); ok {
				dr.Describe(br, depth-1)
			}
		}
	}
}