Java Injector类代码示例

import com.speedment.common.injector.Injector; //导入依赖的package包/类
/**
 * Returns the default value for the package name
 *
 * @param injector  the injector, in case an implementing class needs it
 * @return          the default package name 
 */
default ObservableStringValue defaultPackageNameProperty(Injector injector) {
    final TranslatorSupport<?> support = new TranslatorSupport<>(injector, this);
    
    if (this instanceof ProjectProperty) {
        final ProjectProperty project = (ProjectProperty) this;
        return createStringBinding(
            support::defaultPackageName, 
            project.nameProperty(), 
            project.companyNameProperty()
        );
    } else if (this instanceof HasAliasProperty) {
        final HasAliasProperty alias = (HasAliasProperty) this;
        return createStringBinding(support::defaultPackageName, alias.aliasProperty());
    } else {
        return createStringBinding(support::defaultPackageName, nameProperty());
    }
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
public static <T> T findIn(
        Class<T> type, 
        Injector injector, 
        List<Object> instances, 
        boolean required) {
    
    final Optional<T> found = findAll(type, injector, instances)
        .findFirst(); // Order is important.

    if (required) {
        return found.orElseThrow(() -> 
            new IllegalArgumentException(
                "Could not find any installed implementation of " + 
                type.getName() + "."
            )
        );
    } else {
        return found.orElse(null);
    }
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
@Override
public <C extends Document & HasEnabled> BUILDER with(
    final Class<C> type,
    final String name,
    final BiConsumer<Injector, C> consumer
) {
    requireNonNulls(type, name, consumer);

    injectorBuilder.before(resolved(ProjectComponent.class)
        .withStateInitialized(Injector.class)
        .withExecute((projComp, injector) -> 
            DocumentDbUtil.traverseOver(projComp.getProject(), type)
                .filter(doc -> DocumentUtil.relativeName(
                    HasName.of(doc), 
                    Dbms.class, 
                    DATABASE_NAME
                ).equals(name))
                .forEach(doc -> consumer.accept(injector, doc))
        )
    );
    
    return self();
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
@Override
public final APP build() {
    final Injector inj;

    try {
        inj = injectorBuilder.build();
    } catch (final InstantiationException | CyclicReferenceException ex) {
        throw new SpeedmentException("Error in dependency injection.", ex);
    }
    
    printWelcomeMessage(inj);

    if (!skipValidateRuntimeConfig) {
        validateRuntimeConfig(inj);
    }
    if (!skipCheckDatabaseConnectivity) {
        checkDatabaseConnectivity(inj);
    }

    return build(inj);
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
protected void checkDatabaseConnectivity(Injector injector) {
    LOGGER.debug("Checking Database Connectivity");
    final Project project = injector.getOrThrow(ProjectComponent.class)
        .getProject();
    
    project.dbmses().forEachOrdered(dbms -> {

        final DbmsHandlerComponent dbmsHandlerComponent = injector
            .getOrThrow(DbmsHandlerComponent.class);
        
        final DbmsType dbmsType = DatabaseUtil
            .dbmsTypeOf(dbmsHandlerComponent, dbms);
        
        final DbmsMetadataHandler handler = dbmsType.getMetadataHandler();

        try {
            LOGGER.info(handler.getDbmsInfoString(dbms));
        } catch (final SQLException sqle) {
            throw new SpeedmentException("Unable to establish initial " + 
                "connection with the database named " + 
                dbms.getName() + ".", sqle);
        }
    });
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
@ExecuteBefore(RESOLVED)
void installDecorators(Injector injector,
        @WithState(INITIALIZED) TypeMapperComponent typeMappers,
        @WithState(INITIALIZED) CodeGenerationComponent codeGen,
        @WithState(RESOLVED) PropertyEditorComponent editors) {

    typeMappers.install(String.class, StringToEnumTypeMapper::new);
    typeMappers.install(Integer.class, IntegerToEnumTypeMapper::new);

    codeGen.add(
        Table.class,
        StandardTranslatorKey.GENERATED_ENTITY,
        new GeneratedEntityDecorator(injector)
    );

    editors.install(
        HasEnumConstantsProperty.class,
        Column.ENUM_CONSTANTS,
        CommaSeparatedStringEditor::new
    );
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
private <T> void injectFields(T instance) {
    requireNonNull(instance);
    
    traverseFields(instance.getClass())
        .filter(f -> f.isAnnotationPresent(Inject.class))
        .distinct()
        .forEachOrdered(field -> {
            final Object value;

            if (Injector.class.isAssignableFrom(field.getType())) {
                value = this;
            } else {
                value = find(
                    field.getType(), 
                    field.getAnnotation(WithState.class) != null
                );
            }

            field.setAccessible(true);

            try {
                field.set(instance, value);
            } catch (final IllegalAccessException ex) {
                final String err = "Could not access field '" + 
                    field.getName() +
                    "' in class '" + value.getClass().getName() +
                    "' of type '" + field.getType() + "'.";
                LOGGER.error(ex, err);
                throw new RuntimeException(err, ex);
            }
        });
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
public static <T> Stream<T> findAll(
        Class<T> type, 
        Injector injector, 
        List<Object> instances) {
    
    if (Injector.class.isAssignableFrom(type)) {
        @SuppressWarnings("unchecked")
        final T casted = (T) injector;
        return Stream.of(casted);
    }

    return instances.stream()
        .filter(inst -> type.isAssignableFrom(inst.getClass()))
        .map(type::cast);
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
protected AbstractApplicationBuilder(
    Class<? extends APP> applicationImplClass,
    Class<? extends ApplicationMetadata> metadataClass) {

    this(Injector.builder()
        .withBundle(RuntimeBundle.class)
        .withComponent(applicationImplClass)
        .withComponent(metadataClass)
    );
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
@Override
public BUILDER withLogging(HasLogglerName namer) {
    LoggerManager.getLogger(namer.getLoggerName()).setLevel(Level.DEBUG);
    
    if (LogType.APPLICATION_BUILDER.getLoggerName()
            .equals(namer.getLoggerName())) {
        
        // Special case becaues its in a common module
        Injector.logger().setLevel(Level.DEBUG); 
        InjectorBuilder.logger().setLevel(Level.DEBUG);
    }
    
    return self();
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
protected void validateRuntimeConfig(Injector injector) {
    LOGGER.debug("Validating Runtime Configuration");
    final Project project = injector.getOrThrow(ProjectComponent.class)
        .getProject();
    
    if (project == null) {
        throw new SpeedmentException("No project defined");
    }

    project.dbmses().forEach(d -> {
        final String typeName = d.getTypeName();
        final Optional<DbmsType> oDbmsType = injector.getOrThrow(
            DbmsHandlerComponent.class).findByName(typeName);
        
        if (!oDbmsType.isPresent()) {
            throw new SpeedmentException("The database type " + typeName + 
                " is not registered with the " + 
                DbmsHandlerComponent.class.getSimpleName());
        }
        final DbmsType dbmsType = oDbmsType.get();
        
        if (!dbmsType.isSupported()) {
            LOGGER.error("The database driver class " + dbmsType.getDriverName() + 
                " is not available. Make sure to include it in your " + 
                "class path (e.g. in the POM file)"
            );
        }
    });

}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
@Override
public void execute(Speedment speedment) throws MojoExecutionException, MojoFailureException {
    final Injector injector = speedment.getOrThrow(Injector.class);
    MainApp.setInjector(injector);
    
    if (hasConfigFile()) {
        Application.launch(MainApp.class, configLocation().toAbsolutePath().toString());
    } else {
        Application.launch(MainApp.class);
    }
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
@Override
public void start(Stage stage) throws Exception {
    requireNonNull(stage);

    InjectorBuilder.logger().setLevel(DEBUG);
    
    if (INJECTOR == null) {
        LOGGER.warn("Creating new Speedment instance for UI session.");
        INJECTOR = new DefaultApplicationBuilder(
                getClass().getClassLoader(),
                DefaultApplicationMetadata.class
            )
            .withComponent(CodeGenerationComponentImpl.class)
            .withComponent(UserInterfaceComponentImpl.class)
            .build().getOrThrow(Injector.class);
    }
    
    final UserInterfaceComponentImpl ui = INJECTOR.getOrThrow(UserInterfaceComponentImpl.class);
    final ProjectComponent projects     = INJECTOR.getOrThrow(ProjectComponent.class);
    final InjectionLoader loader        = INJECTOR.getOrThrow(InjectionLoader.class);
    
    ui.start(this, stage);
    
    if (projects.getProject().dbmses().noneMatch(dbms -> true)) {
        if (InternalEmailUtil.hasEmail()) {
            loader.loadAndShow("Connect");
        } else {
            loader.loadAndShow("MailPrompt");
        }
    } else {
        loader.loadAndShow("Scene");
        ui.showNotification(
            "Metadata has been loaded from an offline file. Click here to reload from database.",
            FontAwesome.REFRESH,
            Palette.INFO,
            ui::reload
        );
    }
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
public static void applyBrand(Injector injector, Stage stage, Scene scene) {
    applyBrandToStage(injector, stage);
    
    final Brand brand        = injector.getOrThrow(Brand.class);
    final InfoComponent info = injector.getOrThrow(InfoComponent.class);
    
    apply(brand, info, stage, scene);
}
 

import com.speedment.common.injector.Injector; //导入依赖的package包/类
public static void applyBrandToStage(Injector injector, Stage stage) {
    final InfoComponent info = injector.getOrThrow(InfoComponent.class);
    final Brand brand = injector.getOrThrow(Brand.class);
    
    stage.setTitle(info.getTitle());
    brand.logoSmall()
        .map(Image::new)
        .ifPresent(stage.getIcons()::add);
}