La xaliyay: ku rakib java apt

rakibi ku habboon Ku rakibida iyo Isticmaalka APT gudaha Java

APTs (Qalabka Hagaajinta Annotation) waxa loo isticmaalaa in lagu farsameeyo tafsiiryada faylalka koodhka isha oo ay soo saaraan kood dheeraad ah oo ku salaysan tafsiiryadaas. Maqaalkan, waxaan kaga hadli doonaa sida loo rakibo oo loo isticmaalo APT gudaha Java. Waxaan sidoo kale bixin doonaa sharraxaad-tallaabo ah oo ku saabsan koodka oo aan si qoto dheer u gelin doonnaa maktabadaha iyo shaqooyinka la xiriira ee ku lug leh hirgelinta APT.

Ku rakibida APT

Shuruud ahaan, waxaad u baahan doontaa in lagu rakibo Qalabka Horumarinta Java (JDK) ee nidaamkaaga. Marka lagu rakibo JDK, waxaad bilaabi kartaa isticmaalka APT maadaama ay la timid JDK, gaar ahaan, JDK 5 iyo noocyada xiga. Haddii nidaamkaaga mar hore loogu habeeyey JDK, waxaad u sii gudbi kartaa qaybta xigta si aad u barato isticmaalka APT ee mashaariicda Java.

Isticmaalka APT ee Java

Si aad u fahamto isticmaalka APT ee Java, aynu marno habka abuurista processor-ka tafsiir caado ah. Tani waxay ku lug leedahay saddex tallaabo oo waaweyn:

1. Samee sharraxaad
2. U samee processor-ka qoraalka
3. U adeegso sharraxaadda fasalka Java

// Step 1: Create an annotation
import java.lang.annotation.*;

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.SOURCE)
public @interface CustomAnnotation {
    String value() default "Default value";
}

Halkan, waxaan ku abuurnay sharraxaad cusub oo loo yaqaan 'CustomAnnotation' oo leh qiime aan caadi ahayn.

// Step 2: Create a processor for the annotation
import javax.annotation.processing.*;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.TypeElement;

@SupportedAnnotationTypes("CustomAnnotation")
@SupportedSourceVersion(SourceVersion.RELEASE_8)
public class CustomAnnotationProcessor extends AbstractProcessor {
    @Override
    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
        // Process the annotations
    }
}

Processor-ka caadiga ah wuxuu ku fidiyaa fasalka 'AbstractProcessor' ee xirmada 'javax.annotation.processing' wuxuuna socodsiiyaa 'CustomAnnotation'. Habka 'habka' waa halka koodka la soo saaray ee ku salaysan sharraxaadda lagu qori doono.

// Step 3: Use the annotation in a Java class

@CustomAnnotation(value = "Sample value")
public class AnnotatedClass {
    // Class implementation
}

Halkan, tafsiirku waxa lagu isticmaalaa fasalka Java ee loo yaqaan 'AnnotatedClass' oo leh qiime gaar ah.

Maktabadaha iyo Hawlaha la xidhiidha

Sharaxaada Luqadda Java Programming

  • Javadoc: Javadoc waa soo saaraha dukumentiga caadiga ah ee Java. Waxa loo habayn karaa in loo isticmaalo doclets custom, kuwaas oo la mid ah soo-saareyaasha tafsiirrada.
  • JSR.
  • Google Auto: Isha furan ee maktabado ururin si loo hirgeliyo soo-saarayaasha tafsiirrada iyo soo saarista koodka wakhtiga la ururinayo.

Hawlaha la xidhiidha APT

  • AbstractProcessor: Qaybta aasaasiga ah ee qorista soo-saareyaasha tafsiirta gaarka ah, kaas oo ay tahay in laga gudbo si loo hirgeliyo macquulka habaynta tafsiirrada gaarka ah.
  • Farriinta: Fasalka utility ay bixiso JSR 269 ee ka warbixinta khaladaadka, digniinaha, iyo ogeysiisyada kale inta lagu jiro habaynta qoraalka.
  • Fayliyaha: Fasalka utility ee JSR 269 ee abuurista ilo cusub, fasal, ama faylal caawinaad si loo kaydiyo koodka la soo saaray ama xogta badan.

Gebagebadii, adeegsiga APT ee mashaariicda Java waxay u oggolaanaysaa horumariyeyaashu inay ka faaโ€™iidaystaan โ€‹โ€‹awoodda qoraallada ee curinta code iyo falanqaynta, hagaajinta joogteynta mashruuca iyo akhrintiisa. Qalabka iyo maktabadaha lagu sheegay maqaalkan, horumariyayaashu waxay abuuri karaan soo-saareyaal tafsiir ah oo ku habboon shuruudahooda gaarka ah.

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