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[英]Mapstruct generated class uses Lombok builder from parent instead of child
[英]Customizing Builder generated by Lombok
我已經使用構建器定義了一個類,現在我想使用Lombok的@Builder
注釋來限制樣板代碼。
public class ClientApp {
private UUID clientId;
ClientApp(UUID clientId) {
this.clientId = clientId;
}
public static Builder builder() {
return new Builder();
}
public static class Builder {
private UUID clientId;
public Builder clientId(String clientId) {
return clientId(UUID.fromString(clientId));
}
public Builder clientId(UUID clientId) {
this.clientId = clientId;
return this;
}
public ClientApp build() {
return new ClientApp(this.clientId);
}
}
public Builder clientId(String clientId) {
return clientId(UUID.fromString(clientId));
}
}
但是,注釋不會生成clientId(String)
方法,只會生成clientId(UUID)
。 如何使用Lombok生成它?
好吧,lombok不會為你生成這個,但你可以使用@Builder
並擁有一個ClientAppBuilder類,其中包含一個接受String的方法,並將其路由到另一個要生成的方法。 可能您需要使用@Tolerate標記您的方法,否則Lombok將不會生成UUID接受方法。
披露:我是Lombok開發人員。
我無法使用@Tolerate
方法(我可能做錯了)。
/**
* Fails with The method clientId(String) in the type So33943193.ClientApp.ClientAppBuilder is not applicable
* for the arguments (UUID)
*/
public static class ClientAppBuilder {
@Tolerate
public ClientAppBuilder clientId(String clientId) {
return this.clientId(UUID.fromString(clientId));
}
}
但是,如果您使用的是Java 8,則可以通過使用具有默認方法的接口生成構建器方法時,解決lombok僅匹配方法名稱而不匹配整個簽名的事實。
package lombok.javac.handlers.stackoverflow;
import static org.junit.Assert.*;
import java.util.UUID;
import lombok.Builder;
import lombok.Value;
import org.junit.Test;
public class So33943193 {
/**
* The Interface WithClientUUID.
*
* @param <BLDR> the builder type
*/
public static interface WithClientUUID<BLDR extends WithClientUUID<BLDR>> {
/**
* Client id.
*
* @param clientId the client id
* @return the bldr
*/
default BLDR clientId(String clientId) {
return this.clientId(UUID.fromString(clientId));
}
/**
* Client id.
*
* @param clientId the client id
* @return the bldr
*/
BLDR clientId(UUID clientId);
}
/**
* The Class ClientApp.
*/
@Builder(toBuilder = true)
@Value
public static class ClientApp {
/** The client id. */
private final UUID clientId;
/**
* Instantiates a new client app.
*
* @param clientId the client id
*/
ClientApp(UUID clientId) {
this.clientId = clientId;
}
/**
* Implement the builder and extend the interface.
*/
public static class ClientAppBuilder implements WithClientUUID<ClientAppBuilder> {}
}
/**
* Test all scenarios
*/
@Test
public void testClientApp() {
UUID expected = UUID.randomUUID();
final ClientApp fromUuid = ClientApp.builder()
.clientId(expected)
.build();
final ClientApp fromString = ClientApp.builder()
.clientId(expected.toString())
.build();
assertEquals(expected, fromUuid.getClientId());
assertEquals(expected, fromString.getClientId());
}
}
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