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feat: 为字段添加更多的映射配置。

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Suomm 2023-11-17 23:37:53 +08:00
parent 914248c89e
commit 6288556076
1 changed files with 49 additions and 41 deletions
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90
mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableInfo.java
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@ -989,14 +989,14 @@ public class TableInfo {
public ResultMap buildResultMap(Configuration configuration) {
return doBuildResultMap(configuration, new HashSet<>(), new HashSet<>(), false, getTableNameWithSchema());
return doBuildResultMap(configuration, new HashSet<>(), false, getTableNameWithSchema());
}
private ResultMap doBuildResultMap(Configuration configuration, Set<String> resultMapIds, Set<String> existMappingColumns, boolean isNested, String nestedPrefix) {
private ResultMap doBuildResultMap(Configuration configuration, Set<String> resultMapIds, boolean isNested, String nestedPrefix) {
String resultMapId = isNested ? "nested-" + nestedPrefix + ":" + entityClass.getName() : entityClass.getName();
//是否有循环引用
// 是否有循环引用
boolean withCircularReference = resultMapIds.contains(resultMapId) || resultMapIds.contains(entityClass.getName());
if (withCircularReference) {
return null;
@ -1007,27 +1007,26 @@ public class TableInfo {
if (configuration.hasResultMap(resultMapId)) {
return configuration.getResultMap(resultMapId);
}
List<ResultMapping> resultMappings = new ArrayList<>();
List<ResultMapping> resultMappings = new ArrayList<>();
// <resultMap> 标签下的 <id> 标签映射
for (IdInfo idInfo : primaryKeyList) {
doBuildColumnResultMapping(configuration, existMappingColumns, resultMappings, idInfo, CollectionUtil.newArrayList(ResultFlag.ID), isNested);
doBuildColumnResultMapping(configuration, resultMappings, idInfo, CollectionUtil.newArrayList(ResultFlag.ID));
}
// <resultMap> 标签下的 <result> 标签映射
for (ColumnInfo columnInfo : columnInfoList) {
doBuildColumnResultMapping(configuration, existMappingColumns, resultMappings, columnInfo, Collections.emptyList(), isNested);
doBuildColumnResultMapping(configuration, resultMappings, columnInfo, Collections.emptyList());
}
// <resultMap> 标签下的 <association> 标签映射
if (associationType != null) {
associationType.forEach((fieldName, fieldType) -> {
// 获取嵌套类型的信息，也就是 javaType 属性
TableInfo tableInfo = TableInfoFactory.ofEntityClass(fieldType);
// 构建嵌套类型的 ResultMap 对象，也就是 <association> 标签下的内容
ResultMap nestedResultMap = tableInfo.doBuildResultMap(configuration, resultMapIds, existMappingColumns, true, nestedPrefix);
ResultMap nestedResultMap = tableInfo.doBuildResultMap(configuration, resultMapIds, true, nestedPrefix);
if (nestedResultMap != null) {
resultMappings.add(new ResultMapping.Builder(configuration, fieldName)
.javaType(fieldType)
@ -1044,16 +1043,12 @@ public class TableInfo {
// List<String> List<Integer> 等
String columnName = TableInfoFactory.getColumnName(camelToUnderline, field, field.getAnnotation(Column.class));
// 映射 <result column="..."/>
ResultMapping resultMapping = new ResultMapping.Builder(configuration, null)
.column(columnName)
.typeHandler(configuration.getTypeHandlerRegistry().getTypeHandler(genericClass))
.build();
String nestedResultMapId = entityClass.getName() + "." + field.getName();
ResultMap nestedResultMap = new ResultMap.Builder(configuration, nestedResultMapId, genericClass
, Collections.singletonList(resultMapping)).build();
ResultMap nestedResultMap = new ResultMap.Builder(configuration, nestedResultMapId, genericClass, Collections.singletonList(resultMapping)).build();
configuration.addResultMap(nestedResultMap);
// 映射 <collection property="..." ofType="genericClass">
resultMappings.add(new ResultMapping.Builder(configuration, field.getName())
@ -1064,7 +1059,7 @@ public class TableInfo {
// 获取集合泛型类型的信息，也就是 ofType 属性
TableInfo tableInfo = TableInfoFactory.ofEntityClass(genericClass);
// 构建嵌套类型的 ResultMap 对象，也就是 <collection> 标签下的内容
ResultMap nestedResultMap = tableInfo.doBuildResultMap(configuration, resultMapIds, existMappingColumns, true, nestedPrefix);
ResultMap nestedResultMap = tableInfo.doBuildResultMap(configuration, resultMapIds, true, nestedPrefix);
if (nestedResultMap != null) {
resultMappings.add(new ResultMapping.Builder(configuration, field.getName())
.javaType(field.getType())
@ -1081,42 +1076,55 @@ public class TableInfo {
return resultMap;
}
private void doBuildColumnResultMapping(Configuration configuration, List<ResultMapping> resultMappings
, ColumnInfo columnInfo, List<ResultFlag> flags) {
private void doBuildColumnResultMapping(Configuration configuration, Set<String> existMappingColumns, List<ResultMapping> resultMappings
, ColumnInfo columnInfo, List<ResultFlag> flags, boolean isNested) {
String[] columns = ArrayUtil.concat(new String[]{columnInfo.column, columnInfo.property}, columnInfo.alias);
for (String column : columns) {
if (!existMappingColumns.contains(column)) {
ResultMapping mapping = new ResultMapping.Builder(configuration
// userName -> user_name
resultMappings.add(new ResultMapping.Builder(configuration
, columnInfo.property
, columnInfo.column
, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.flags(flags)
.typeHandler(columnInfo.buildTypeHandler(configuration))
.build());
// userName -> tb_user$user_name
resultMappings.add(new ResultMapping.Builder(configuration
, columnInfo.property
, tableName + "$" + columnInfo.column
, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.flags(flags)
.typeHandler(columnInfo.buildTypeHandler(configuration))
.build());
if (!Objects.equals(columnInfo.column, columnInfo.property)) {
// userName -> userName
resultMappings.add(new ResultMapping.Builder(configuration
, columnInfo.property
, columnInfo.property
, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.flags(flags)
.typeHandler(columnInfo.buildTypeHandler(configuration))
.build());
}
if (ArrayUtil.isNotEmpty(columnInfo.alias)) {
for (String alias : columnInfo.alias) {
// userName -> alias
resultMappings.add(new ResultMapping.Builder(configuration
, columnInfo.property
, column
, alias
, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.flags(flags)
.typeHandler(columnInfo.buildTypeHandler(configuration))
.build();
resultMappings.add(mapping);
existMappingColumns.add(mapping.getColumn());
.build());
}
}
if (isNested) {
for (String column : columns) {
column = tableName + "$" + column;
if (!existMappingColumns.contains(column)) {
ResultMapping mapping = new ResultMapping.Builder(configuration
, columnInfo.property
, column
, columnInfo.propertyType)
.jdbcType(columnInfo.getJdbcType())
.flags(flags)
.typeHandler(columnInfo.buildTypeHandler(configuration))
.build();
resultMappings.add(mapping);
existMappingColumns.add(mapping.getColumn());
}
}
}
}