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parser.go
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/
parser.go
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/*
Copyright 2023 eatmoreapple
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package juice
import (
"encoding/xml"
"errors"
"fmt"
"io"
"io/fs"
"net/http"
"net/url"
"path"
"path/filepath"
"strconv"
"strings"
)
// ConfigurationParser is the interface for parsing configuration.
type ConfigurationParser interface {
// Parse parses the configuration from the reader.
Parse(reader io.Reader) (*Configuration, error)
}
// XMLParser is the parser for XML configuration.
type XMLParser struct {
configuration Configuration
FS fs.FS
ignoreEnv bool
}
// Parse implements ConfigurationParser.
func (p *XMLParser) Parse(reader io.Reader) (*Configuration, error) {
decoder := xml.NewDecoder(reader)
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
switch token.Name.Local {
case "environments":
if p.ignoreEnv {
continue
}
envs, err := p.parseEnvironments(decoder, token)
if err != nil {
return nil, err
}
p.configuration.environments = envs
case "mappers":
mappers, err := p.parseMappers(token, decoder)
if err != nil {
return nil, err
}
p.configuration.mappers = mappers
case "settings":
settings, err := p.parseSettings(decoder)
if err != nil {
return nil, err
}
p.configuration.settings = settings
}
}
}
return &p.configuration, nil
}
func (p *XMLParser) parseEnvironments(decoder *xml.Decoder, token xml.StartElement) (*environments, error) {
var envs environments
for _, attr := range token.Attr {
envs.setAttr(attr.Name.Local, attr.Value)
}
if envs.Attribute("default") == "" {
return nil, errors.New("default environment is not specified")
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
if token.Name.Local == "environment" {
environment, err := p.parseEnvironment(decoder, token)
if err != nil {
return nil, err
}
if _, exists := envs.envs[environment.ID()]; exists {
return nil, fmt.Errorf("duplicate environment id: %s", environment.ID())
}
if envs.envs == nil {
envs.envs = make(map[string]*Environment)
}
envs.envs[environment.ID()] = environment
}
case xml.EndElement:
if token.Name.Local == "environments" {
return &envs, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "environments"}
}
func (p *XMLParser) parseEnvironment(decoder *xml.Decoder, token xml.StartElement) (*Environment, error) {
var env = &Environment{}
for _, attr := range token.Attr {
env.setAttr(attr.Name.Local, attr.Value)
}
if env.ID() == "" {
return nil, errors.New("environment id is required")
}
provider := env.provider()
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
switch token.Name.Local {
case "dataSource":
env.DataSource, err = p.parseDataSource(decoder, provider)
if err != nil {
return nil, err
}
case "driver":
env.Driver, err = p.parseDriver(decoder, provider)
if err != nil {
return nil, err
}
case "maxIdleConnNum":
env.MaxIdleConnNum, err = p.parseMaxIdleConnNum(decoder, provider)
if err != nil {
return nil, err
}
case "maxOpenConnNum":
env.MaxOpenConnNum, err = p.parseMaxOpenConnNum(decoder, provider)
if err != nil {
return nil, err
}
case "maxConnLifetime":
env.MaxConnLifetime, err = p.parseMaxConnLifetime(decoder, provider)
if err != nil {
return nil, err
}
case "maxIdleConnLifetime":
env.MaxIdleConnLifetime, err = p.parseMaxIdleConnLifetime(decoder, provider)
if err != nil {
return nil, err
}
}
case xml.EndElement:
if token.Name.Local == "environment" {
return env, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "environment"}
}
func (p *XMLParser) parseMappers(start xml.StartElement, decoder *xml.Decoder) (*Mappers, error) {
var mappers = &Mappers{cfg: &p.configuration}
for _, attr := range start.Attr {
mappers.setAttribute(attr.Name.Local, attr.Value)
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
// mappers only support mapper child node
if token.Name.Local == "mapper" {
mapper, err := p.parseMapper(decoder, token)
if err != nil {
return nil, err
}
// check result map
if err = mapper.checkResultMap(); err != nil {
return nil, err
}
if err = mappers.setMapper(mapper.namespace, mapper); err != nil {
return nil, err
}
}
case xml.EndElement:
if token.Name.Local == "mappers" {
return mappers, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "mappers"}
}
func (p *XMLParser) parseMapper(decoder *xml.Decoder, token xml.StartElement) (*Mapper, error) {
mapper := &Mapper{}
for _, attr := range token.Attr {
mapper.setAttribute(attr.Name.Local, attr.Value)
}
resource := mapper.Attribute("resource")
_url := mapper.Attribute("url")
namespace := mapper.Attribute("namespace")
// check conflict
// resource, url, namespace only one can be set
// namespace is required if resource and url are not set
switch {
case resource != "" && _url != "":
return nil, &nodeAttributeConflictError{nodeName: "mapper", attrName: "resource|url"}
case resource != "" && namespace != "":
return nil, &nodeAttributeConflictError{nodeName: "mapper", attrName: "resource|namespace"}
case _url != "" && namespace != "":
return nil, &nodeAttributeConflictError{nodeName: "mapper", attrName: "url|namespace"}
case resource == "" && _url == "" && namespace == "":
return nil, &nodeAttributeRequiredError{nodeName: "mapper", attrName: "resource|url|namespace"}
}
if resource != "" {
return p.parseMapperByResource(resource)
}
if _url != "" {
return p.parseMapperByURL(_url)
}
if namespace == "" {
return nil, &nodeAttributeRequiredError{nodeName: "mapper", attrName: "namespace"}
}
mapper.namespace = namespace
mapper.statements = make(map[string]*xmlSQLStatement)
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
action := Action(token.Name.Local)
switch action {
case Select, Insert, Update, Delete:
stmt := &xmlSQLStatement{action: action, mapper: mapper}
if err = p.parseStatement(stmt, decoder, token); err != nil {
return nil, err
}
key := stmt.ID()
if _, exists := mapper.statements[key]; exists {
return nil, fmt.Errorf("duplicate xmlSQLStatement id: %s", key)
}
mapper.statements[key] = stmt
case "sql":
// parse sql node
sqlNode := &SQLNode{mapper: mapper}
if err = p.parseSQLNode(sqlNode, decoder, token); err != nil {
return nil, err
}
if err = mapper.setSqlNode(sqlNode); err != nil {
return nil, err
}
case "resultMap":
// parse result map node
resultMap, err := p.parseResultMap(decoder, token)
if err != nil {
return nil, err
}
if err := resultMap.init(); err != nil {
return nil, err
}
if err = mapper.setResultMap(resultMap); err != nil {
return nil, err
}
}
case xml.EndElement:
if token.Name.Local == "mapper" {
return mapper, nil
}
}
}
return mapper, nil
}
func (p *XMLParser) parseMapperByReader(reader io.Reader) (mapper *Mapper, err error) {
decoder := xml.NewDecoder(reader)
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
if token.Name.Local == "mapper" {
if mapper, err = p.parseMapper(decoder, token); err != nil {
return nil, err
}
break
}
}
}
return mapper, err
}
func (p *XMLParser) parseMapperByResource(resource string) (*Mapper, error) {
var (
reader io.ReadCloser
err error
)
reader, err = p.FS.Open(resource)
if err != nil {
return nil, err
}
defer func() { _ = reader.Close() }()
return p.parseMapperByReader(reader)
}
func (p *XMLParser) parseMapperByHttpResponse(url string) (*Mapper, error) {
resp, err := http.Get(url)
if err != nil {
return nil, err
}
defer func() { _ = resp.Body.Close() }()
return p.parseMapperByReader(resp.Body)
}
func (p *XMLParser) parseMapperByURL(path string) (*Mapper, error) {
// prepare url schema
u, err := url.Parse(path)
if err != nil {
return nil, err
}
schema := u.Scheme
switch schema {
case "file":
return p.parseMapperByResource(u.Path)
case "http", "https":
return p.parseMapperByHttpResponse(path)
default:
return nil, errors.New("invalid url schema")
}
}
func (p *XMLParser) parseStatement(stmt *xmlSQLStatement, decoder *xml.Decoder, token xml.StartElement) error {
for _, attr := range token.Attr {
stmt.setAttribute(attr.Name.Local, attr.Value)
}
if id := stmt.Attribute("id"); id == "" {
return fmt.Errorf("%s xmlSQLStatement id is required", stmt.Action())
} else {
stmt.id = id
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return err
}
switch token := token.(type) {
case xml.StartElement:
switch token.Name.Local {
case "values":
if stmt.action != Insert {
return fmt.Errorf("values node only support insert xmlSQLStatement")
}
node, err := p.parseValuesNode(decoder)
if err != nil {
return err
}
stmt.Nodes = append(stmt.Nodes, node)
case "alias":
if stmt.action != Select {
return fmt.Errorf("alias node only support select xmlSQLStatement")
}
node, err := p.parseAliasNode(decoder)
if err != nil {
return err
}
stmt.Nodes = append(stmt.Nodes, node)
default:
node, err := p.parseTags(stmt.mapper, decoder, token)
if err != nil {
return err
}
stmt.Nodes = append(stmt.Nodes, node)
}
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return err
}
stmt.Nodes = append(stmt.Nodes, node)
}
case xml.EndElement:
switch token.Name.Local {
case stmt.action.String():
return nil
default:
return fmt.Errorf("unexpected end element: %s", token.Name.Local)
}
}
}
return nil
}
func (p *XMLParser) parseTags(mapper *Mapper, decoder *xml.Decoder, token xml.StartElement) (Node, error) {
switch token.Name.Local {
case "if":
return p.parseIf(mapper, decoder, token)
case "where":
return p.parseWhere(mapper, decoder)
case "trim":
return p.parseTrim(mapper, decoder, token)
case "foreach":
return p.parseForeach(mapper, decoder, token)
case "set":
return p.parseSet(mapper, decoder)
case "include":
return p.parseInclude(mapper, decoder, token)
case "choose":
return p.parseChoose(mapper, decoder)
}
return nil, fmt.Errorf("unknown tag: %s", token.Name.Local)
}
func (p *XMLParser) parseInclude(mapper *Mapper, decoder *xml.Decoder, token xml.StartElement) (Node, error) {
var ref string
for _, attr := range token.Attr {
switch attr.Name.Local {
case "refid":
ref = attr.Value
}
}
if ref == "" {
return nil, &nodeAttributeRequiredError{nodeName: "include", attrName: "refid"}
}
// try to find sql xmlSQLStatement by refid
// if not found, it means the sql xmlSQLStatement has not been parsed yet,
// ignore it and lazy parse it when use
sqlNode, _ := mapper.GetSQLNodeByID(ref)
includeNode := &IncludeNode{sqlNode: sqlNode, mapper: mapper, refId: ref}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
// TODO: PARSE PROPERTIES HERE
case xml.EndElement:
if token.Name.Local == "include" {
return includeNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "include"}
}
func (p *XMLParser) parseSet(mapper *Mapper, decoder *xml.Decoder) (Node, error) {
setNode := &SetNode{}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
node, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
setNode.Nodes = append(setNode.Nodes, node)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return nil, err
}
setNode.Nodes = append(setNode.Nodes, node)
}
case xml.EndElement:
if token.Name.Local == "set" {
return setNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "set"}
}
func (p *XMLParser) parseIf(mapper *Mapper, decoder *xml.Decoder, token xml.StartElement) (Node, error) {
ifNode := &IfNode{}
var test string
for _, attr := range token.Attr {
if attr.Name.Local == "test" {
test = attr.Value
break
}
}
if test == "" {
return nil, &nodeAttributeRequiredError{nodeName: "if", attrName: "test"}
}
// parse condition expression
if err := ifNode.Parse(test); err != nil {
return nil, err
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
node, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
ifNode.Nodes = append(ifNode.Nodes, node)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return nil, err
}
ifNode.Nodes = append(ifNode.Nodes, node)
}
case xml.EndElement:
if token.Name.Local == "if" {
return ifNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "if"}
}
func (p *XMLParser) parseWhere(mapper *Mapper, decoder *xml.Decoder) (Node, error) {
whereNode := &WhereNode{}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
node, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
whereNode.Nodes = append(whereNode.Nodes, node)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return nil, err
}
whereNode.Nodes = append(whereNode.Nodes, node)
}
case xml.EndElement:
if token.Name.Local == "where" {
return whereNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "where"}
}
func (p *XMLParser) parseTrim(mapper *Mapper, decoder *xml.Decoder, token xml.StartElement) (Node, error) {
trimNode := &TrimNode{}
for _, attr := range token.Attr {
switch attr.Name.Local {
case "prefix":
trimNode.Prefix = attr.Value
case "prefixOverrides":
prefixOverrides := strings.Split(attr.Value, "|")
for i := range prefixOverrides {
prefixOverrides[i] = strings.TrimSpace(prefixOverrides[i])
}
trimNode.PrefixOverrides = prefixOverrides
case "suffix":
trimNode.Suffix = attr.Value
case "suffixOverrides":
suffixOverrides := strings.Split(attr.Value, "|")
for i := range suffixOverrides {
suffixOverrides[i] = strings.TrimSpace(suffixOverrides[i])
}
trimNode.SuffixOverrides = suffixOverrides
}
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
node, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
trimNode.Nodes = append(trimNode.Nodes, node)
case xml.EndElement:
if token.Name.Local == "trim" {
return trimNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "trim"}
}
func (p *XMLParser) parseForeach(mapper *Mapper, decoder *xml.Decoder, token xml.StartElement) (Node, error) {
foreachNode := &ForeachNode{}
for _, attr := range token.Attr {
switch attr.Name.Local {
case "collection":
foreachNode.Collection = attr.Value
case "item":
foreachNode.Item = attr.Value
case "index":
foreachNode.Index = attr.Value
case "open":
foreachNode.Open = attr.Value
case "separator":
foreachNode.Separator = attr.Value
case "close":
foreachNode.Close = attr.Value
}
}
// if collection is empty, use default param key instead.
if foreachNode.Collection == "" {
foreachNode.Collection = defaultParamKey
}
if foreachNode.Item == "" {
return nil, &nodeAttributeRequiredError{nodeName: "foreach", attrName: "item"}
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
node, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
foreachNode.Nodes = append(foreachNode.Nodes, node)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return nil, err
}
foreachNode.Nodes = append(foreachNode.Nodes, node)
}
case xml.EndElement:
if token.Name.Local == "foreach" {
return foreachNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "foreach"}
}
func (p *XMLParser) parseChoose(mapper *Mapper, decoder *xml.Decoder) (Node, error) {
chooseNode := &ChooseNode{}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
switch token.Name.Local {
case "when":
node, err := p.parseWhen(mapper, decoder, token)
if err != nil {
return nil, err
}
chooseNode.WhenNodes = append(chooseNode.WhenNodes, node)
case "otherwise":
if chooseNode.OtherwiseNode != nil {
return nil, errors.New("otherwise is only once")
}
node, err := p.parseOtherwise(mapper, decoder)
if err != nil {
return nil, err
}
chooseNode.OtherwiseNode = node
}
case xml.EndElement:
if token.Name.Local == "choose" {
return chooseNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "choose"}
}
func (p *XMLParser) parseCharData(decoder *xml.Decoder, endElementName string) (string, error) {
var charData string
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return "", err
}
switch token := token.(type) {
case xml.CharData:
charData = string(token)
case xml.EndElement:
if token.Name.Local == endElementName {
return charData, nil
}
}
}
return "", &nodeUnclosedError{nodeName: endElementName}
}
func (p *XMLParser) parseMaxIdleConnNum(decoder *xml.Decoder, provider EnvValueProvider) (int, error) {
return p.parseEnvInt("maxIdleConnNum", decoder, provider)
}
func (p *XMLParser) parseEnvString(key string, decoder *xml.Decoder, provider EnvValueProvider) (string, error) {
value, err := p.parseCharData(decoder, key)
if err != nil {
return "", err
}
return provider.Get(value)
}
func (p *XMLParser) parseEnvInt(key string, decoder *xml.Decoder, provider EnvValueProvider) (int, error) {
value, err := p.parseCharData(decoder, key)
if err != nil {
return 0, err
}
str, err := provider.Get(value)
if err != nil {
return 0, err
}
return strconv.Atoi(str)
}
func (p *XMLParser) parseDataSource(decoder *xml.Decoder, provider EnvValueProvider) (string, error) {
return p.parseEnvString("dataSource", decoder, provider)
}
func (p *XMLParser) parseDriver(decoder *xml.Decoder, provider EnvValueProvider) (string, error) {
return p.parseEnvString("driver", decoder, provider)
}
func (p *XMLParser) parseMaxOpenConnNum(decoder *xml.Decoder, provider EnvValueProvider) (int, error) {
return p.parseEnvInt("maxOpenConnNum", decoder, provider)
}
func (p *XMLParser) parseMaxConnLifetime(decoder *xml.Decoder, provider EnvValueProvider) (int, error) {
return p.parseEnvInt("maxConnLifetime", decoder, provider)
}
func (p *XMLParser) parseMaxIdleConnLifetime(decoder *xml.Decoder, provider EnvValueProvider) (int, error) {
return p.parseEnvInt("maxIdleConnLifetime", decoder, provider)
}
func (p *XMLParser) parseSettings(decoder *xml.Decoder) (keyValueSettingProvider, error) {
var setting []settingItem
if err := decoder.DecodeElement(&setting, nil); err != nil {
return nil, err
}
var settings = make(keyValueSettingProvider, len(setting))
for _, s := range setting {
if _, ok := settings[s.Name]; ok {
return nil, fmt.Errorf("duplicate setting name: %s", s.Name)
}
settings[s.Name] = s.Value
}
return settings, nil
}
func (p *XMLParser) parseSQLNode(sqlNode *SQLNode, decoder *xml.Decoder, token xml.StartElement) error {
for _, attr := range token.Attr {
if attr.Name.Local == "id" {
sqlNode.id = attr.Value
break
}
}
if sqlNode.id == "" {
return &nodeAttributeRequiredError{nodeName: "sql", attrName: "id"}
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return err
}
switch token := token.(type) {
case xml.StartElement:
tags, err := p.parseTags(sqlNode.mapper, decoder, token)
if err != nil {
return err
}
sqlNode.nodes = append(sqlNode.nodes, tags)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return err
}
sqlNode.nodes = append(sqlNode.nodes, node)
}
case xml.EndElement:
if token.Name.Local == "sql" {
return nil
}
}
}
return &nodeUnclosedError{nodeName: "sql"}
}
func (p *XMLParser) parseWhen(mapper *Mapper, decoder *xml.Decoder, token xml.StartElement) (Node, error) {
whenNode := &WhenNode{}
var test string
for _, attr := range token.Attr {
if attr.Name.Local == "test" {
test = attr.Value
break
}
}
if test == "" {
return nil, &nodeAttributeRequiredError{nodeName: "when", attrName: "test"}
}
// parse condition expression
if err := whenNode.Parse(test); err != nil {
return nil, err
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
node, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
whenNode.Nodes = append(whenNode.Nodes, node)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return nil, err
}
whenNode.Nodes = append(whenNode.Nodes, node)
}
case xml.EndElement:
if token.Name.Local == "when" {
return whenNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "when"}
}
func (p *XMLParser) parseOtherwise(mapper *Mapper, decoder *xml.Decoder) (Node, error) {
otherwiseNode := &OtherwiseNode{}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
tags, err := p.parseTags(mapper, decoder, token)
if err != nil {
return nil, err
}
otherwiseNode.Nodes = append(otherwiseNode.Nodes, tags)
case xml.CharData:
text := string(token)
if char := strings.TrimSpace(text); char != "" {
node, err := NewTextNode(char)
if err != nil {
return nil, err
}
otherwiseNode.Nodes = append(otherwiseNode.Nodes, node)
}
case xml.EndElement:
if token.Name.Local == "otherwise" {
return otherwiseNode, nil
}
}
}
return nil, &nodeUnclosedError{nodeName: "otherwise"}
}
func (p *XMLParser) parseResultMap(decoder *xml.Decoder, token xml.StartElement) (*resultMapNode, error) {
resultMap := &resultMapNode{}
for _, attr := range token.Attr {
if attr.Name.Local == "id" {
resultMap.id = attr.Value
break
}
}
if resultMap.id == "" {
return nil, &nodeAttributeRequiredError{nodeName: "resultMap", attrName: "id"}
}
for {
token, err := decoder.Token()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
switch token := token.(type) {
case xml.StartElement:
switch token.Name.Local {
case "id":
pk, err := p.parseResult(token, decoder, "id")
if err != nil {
return nil, err
}