io.micronaut.inject.annotation.MutableAnnotationMetadata Maven / Gradle / Ivy

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/*
 * Copyright 2017-2020 original authors
 *
 * 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
 *
 * https://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 io.micronaut.inject.annotation;

import io.micronaut.context.env.DefaultPropertyPlaceholderResolver;
import io.micronaut.core.annotation.AnnotationValue;
import io.micronaut.core.annotation.NonNull;
import io.micronaut.core.annotation.Nullable;
import io.micronaut.core.util.CollectionUtils;
import org.jetbrains.annotations.NotNull;

import java.lang.annotation.Annotation;
import java.lang.annotation.RetentionPolicy;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.Predicate;
import java.util.stream.Collectors;

/**
 * A mutable various of {@link DefaultAnnotationMetadata} that is used only at build time.
 *
 * @author graemerocher
 * @since 2.4.0
 */
public class MutableAnnotationMetadata extends DefaultAnnotationMetadata {

    private boolean hasPropertyExpressions = false;

    /**
     * Default constructor.
     */
    public MutableAnnotationMetadata() {
    }

    private MutableAnnotationMetadata(@Nullable Map> declaredAnnotations,
                                     @Nullable Map> declaredStereotypes,
                                     @Nullable Map> allStereotypes,
                                     @Nullable Map> allAnnotations,
                                     @Nullable Map> annotationsByStereotype,
                                     boolean hasPropertyExpressions) {
        super(declaredAnnotations,
              declaredStereotypes,
              allStereotypes,
              allAnnotations,
              annotationsByStereotype,
              hasPropertyExpressions);
        this.hasPropertyExpressions = hasPropertyExpressions;
    }

    @Override
    public boolean hasPropertyExpressions() {
        return hasPropertyExpressions;
    }

    @Override
    public MutableAnnotationMetadata clone() {
        final MutableAnnotationMetadata cloned = new MutableAnnotationMetadata(
                declaredAnnotations != null ? new HashMap<>(declaredAnnotations) : null,
                declaredStereotypes != null ? new HashMap<>(declaredStereotypes) : null,
                allStereotypes != null ? new HashMap<>(allStereotypes) : null,
                allAnnotations != null ? new HashMap<>(allAnnotations) : null,
                annotationsByStereotype != null ? new HashMap<>(annotationsByStereotype) : null,
                hasPropertyExpressions
        );
        if (annotationDefaultValues != null) {
            cloned.annotationDefaultValues = new LinkedHashMap<>(annotationDefaultValues);
        }
        if (repeated != null) {
            cloned.repeated = new HashMap<>(repeated);
        }
        return cloned;
    }

    @NotNull
    @Override
    public Map getDefaultValues(@NonNull String annotation) {
        Map values = super.getDefaultValues(annotation);
        if (values.isEmpty() && annotationDefaultValues != null) {
            final Map compileTimeDefaults = annotationDefaultValues.get(annotation);
            if (compileTimeDefaults != null && !compileTimeDefaults.isEmpty()) {
                return compileTimeDefaults.entrySet().stream()
                        .collect(Collectors.toMap(e -> e.getKey().toString(), Map.Entry::getValue));
            }
        }
        return values;
    }

    @Override
    public  void removeAnnotationIf(@NonNull Predicate> predicate) {
        super.removeAnnotationIf(predicate);
    }

    @Override
    public void removeAnnotation(String annotationType) {
        super.removeAnnotation(annotationType);
    }

    @Override
    public void removeStereotype(String annotationType) {
        super.removeStereotype(annotationType);
    }

    @Override
    public void addAnnotation(String annotation, Map values) {
        this.hasPropertyExpressions = computeHasPropertyExpressions(values, RetentionPolicy.RUNTIME);
        super.addAnnotation(annotation, values);
    }

    @Override
    public void addAnnotation(String annotation, Map values, RetentionPolicy retentionPolicy) {
        this.hasPropertyExpressions = computeHasPropertyExpressions(values, retentionPolicy);
        super.addAnnotation(annotation, values, retentionPolicy);
    }

    @Override
    public void addRepeatableStereotype(List parents, String stereotype, AnnotationValue annotationValue) {
        Objects.requireNonNull(annotationValue, "Annotation Value cannot be null");
        this.hasPropertyExpressions = computeHasPropertyExpressions(annotationValue.getValues(), RetentionPolicy.RUNTIME);
        super.addRepeatableStereotype(parents, stereotype, annotationValue);
    }

    @Override
    public void addDeclaredRepeatableStereotype(List parents, String stereotype, AnnotationValue annotationValue) {
        Objects.requireNonNull(annotationValue, "Annotation Value cannot be null");
        this.hasPropertyExpressions = computeHasPropertyExpressions(annotationValue.getValues(), RetentionPolicy.RUNTIME);
        super.addDeclaredRepeatableStereotype(parents, stereotype, annotationValue);
    }

    @Override
    public void addDeclaredAnnotation(String annotation, Map values) {
        this.hasPropertyExpressions = computeHasPropertyExpressions(values, RetentionPolicy.RUNTIME);
        super.addDeclaredAnnotation(annotation, values);
    }

    @Override
    public void addDeclaredAnnotation(String annotation, Map values, RetentionPolicy retentionPolicy) {
        this.hasPropertyExpressions = computeHasPropertyExpressions(values, retentionPolicy);
        super.addDeclaredAnnotation(annotation, values, retentionPolicy);
    }

    @Override
    public void addRepeatable(String annotationName, AnnotationValue annotationValue) {
        Objects.requireNonNull(annotationValue, "Annotation Value cannot be null");
        this.hasPropertyExpressions = computeHasPropertyExpressions(annotationValue.getValues(), RetentionPolicy.RUNTIME);
        super.addRepeatable(annotationName, annotationValue);
    }

    @Override
    public void addRepeatable(String annotationName, AnnotationValue annotationValue, RetentionPolicy retentionPolicy) {
        Objects.requireNonNull(annotationValue, "Annotation Value cannot be null");
        this.hasPropertyExpressions = computeHasPropertyExpressions(annotationValue.getValues(), retentionPolicy);
        super.addRepeatable(annotationName, annotationValue, retentionPolicy);
    }

    @Override
    public void addDeclaredRepeatable(String annotationName, AnnotationValue annotationValue) {
        Objects.requireNonNull(annotationValue, "Annotation Value cannot be null");
        this.hasPropertyExpressions = computeHasPropertyExpressions(annotationValue.getValues(), RetentionPolicy.RUNTIME);
        super.addDeclaredRepeatable(annotationName, annotationValue);
    }

    @Override
    public void addDeclaredRepeatable(String annotationName, AnnotationValue annotationValue, RetentionPolicy retentionPolicy) {
        Objects.requireNonNull(annotationValue, "Annotation Value cannot be null");
        this.hasPropertyExpressions = computeHasPropertyExpressions(annotationValue.getValues(), retentionPolicy);
        super.addDeclaredRepeatable(annotationName, annotationValue, retentionPolicy);
    }

    @Override
    public void addDeclaredStereotype(List parentAnnotations, String stereotype, Map values) {
        super.addDeclaredStereotype(parentAnnotations, stereotype, values);
    }

    @Override
    public void addDeclaredStereotype(List parentAnnotations, String stereotype, Map values, RetentionPolicy retentionPolicy) {
        super.addDeclaredStereotype(parentAnnotations, stereotype, values, retentionPolicy);
    }

    private boolean computeHasPropertyExpressions(Map values, RetentionPolicy retentionPolicy) {
        return hasPropertyExpressions || values != null && retentionPolicy == RetentionPolicy.RUNTIME && hasPropertyExpressions(values);
    }

    private boolean hasPropertyExpressions(Map values) {
        if (CollectionUtils.isEmpty(values)) {
            return false;
        }
        return values.values().stream().anyMatch(v -> {
            if (v instanceof CharSequence) {
                return v.toString().contains(DefaultPropertyPlaceholderResolver.PREFIX);
            } else if (v instanceof String[]) {
                return Arrays.stream((String[]) v).anyMatch(s -> s.contains(DefaultPropertyPlaceholderResolver.PREFIX));
            } else if (v instanceof AnnotationValue) {
                return hasPropertyExpressions(((AnnotationValue) v).getValues());
            } else if (v instanceof AnnotationValue[]) {
                final AnnotationValue[] a = (AnnotationValue[]) v;
                if (a.length > 0) {
                    return Arrays.stream(a).anyMatch(av -> hasPropertyExpressions(av.getValues()));
                } else {
                    return false;
                }
            } else {
                return false;
            }
        });
    }
}