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src/main/java/info/novatec/beantest/extension/InjectionHelper.java
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| /* | ||
| * Bean Testing. | ||
| * | ||
| * 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 info.novatec.beantest.extension; | ||
|
|
||
| import java.lang.annotation.Annotation; | ||
| import java.util.Collections; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
| import javax.annotation.Resource; | ||
| import javax.ejb.EJB; | ||
| import javax.enterprise.inject.spi.AnnotatedField; | ||
| import javax.enterprise.inject.spi.AnnotatedMember; | ||
| import javax.enterprise.inject.spi.AnnotatedMethod; | ||
| import javax.enterprise.inject.spi.AnnotatedType; | ||
| import javax.inject.Inject; | ||
| import javax.persistence.PersistenceContext; | ||
| import org.apache.deltaspike.core.util.metadata.AnnotationInstanceProvider; | ||
| import org.apache.deltaspike.core.util.metadata.builder.AnnotatedTypeBuilder; | ||
|
|
||
| /** | ||
| * This class provides general convenience methods for injection and validation. | ||
| * | ||
| * @author Carlos Barragan (carlos.barragan@novatec-gmbh.de) | ||
| */ | ||
| public final class InjectionHelper { | ||
|
|
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| private static final Inject INJECT_ANNOTATION = AnnotationInstanceProvider.of(Inject.class); | ||
|
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| private static final Set<Class<? extends Annotation>> JAVA_EE_ANNOTATIONS = createJavaEEAnnotationSet(); | ||
|
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| private static Set<Class<? extends Annotation>> createJavaEEAnnotationSet() { | ||
| Set<Class<? extends Annotation>> javaEEAnnotations = new HashSet<Class<? extends Annotation>>(); | ||
| javaEEAnnotations.add(Resource.class); | ||
| javaEEAnnotations.add(EJB.class); | ||
| javaEEAnnotations.add(PersistenceContext.class); | ||
| return Collections.unmodifiableSet(javaEEAnnotations); | ||
| } | ||
|
|
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| private InjectionHelper() { | ||
| // Empty on purpose. | ||
| } | ||
|
|
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| /** | ||
| * Returns <code>true</code> if the member is NOT annotated with {@link Inject} and is annotated with one of the following annotations: | ||
| * <ul> | ||
| * <li> {@link EJB} | ||
| * <li> {@link PersistenceContext} | ||
| * <li> {@link Resource} | ||
| * </ul> | ||
| * Otherwise, it returns <code>false</code>. | ||
| * | ||
| * @param <X> | ||
| * the type of the annotated member | ||
| * @param member | ||
| * the annotated member whose annotations should be verified. | ||
| * @return <code>true</code> if the member is NOT annotated with {@link Inject} and is annotated with {@link EJB}, | ||
| * {@link PersistenceContext} or {@link Resource} | ||
| */ | ||
| public static <X> boolean shouldInjectionAnnotationBeAddedToMember(AnnotatedMember<? super X> member) { | ||
| return !member.isAnnotationPresent(Inject.class) && hasJavaEEAnnotations(member); | ||
| } | ||
|
|
||
| /** | ||
| * Returns <code>true</code> if at least one of the following Java EE annotations is present in the given member: | ||
| * <ul> | ||
| * <li> {@link EJB} | ||
| * <li> {@link PersistenceContext} | ||
| * <li> {@link Resource} | ||
| * </ul> | ||
| * Otherwise, it returns <code>false</code>. | ||
| * @param <X> the type of the annotated member. | ||
| * @param member the member whose annotations should be verified. | ||
| * @return <code>true</code> if the member is at least annotated with one of the following annotations: {@link EJB}, {@link PersistenceContext} or {@link Resource}. | ||
| */ | ||
| private static <X> boolean hasJavaEEAnnotations(AnnotatedMember<? super X> member) { | ||
| for(Class<? extends Annotation> javaEEannotation : JAVA_EE_ANNOTATIONS) { | ||
| if (member.isAnnotationPresent(javaEEannotation)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** | ||
| * Adds the {@link Inject} annotation to the fields and setters of the annotated type if required. | ||
| * | ||
| * @param <X> | ||
| * the type of the annotated type | ||
| * @param annotatedType | ||
| * the annotated type whose fields and setters the inject annotation should be added to | ||
| * @param builder | ||
| * the builder that should be used to add the annotation. | ||
| * @see #shouldInjectionAnnotationBeAddedToMember(AnnotatedMember) | ||
| */ | ||
| public static <X> void addInjectAnnotation(final AnnotatedType<X> annotatedType, AnnotatedTypeBuilder<X> builder) { | ||
| for (AnnotatedField<? super X> field : annotatedType.getFields()) { | ||
| if (shouldInjectionAnnotationBeAddedToMember(field)) { | ||
| builder.addToField(field, INJECT_ANNOTATION); | ||
| } | ||
| } | ||
| for (AnnotatedMethod<? super X> method : annotatedType.getMethods()) { | ||
| if (shouldInjectionAnnotationBeAddedToMember(method)) { | ||
| builder.addToMethod(method, INJECT_ANNOTATION); | ||
| } | ||
| } | ||
| } | ||
|
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|
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| } |