io.micronaut.core.beans.BeanIntrospectionMap Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of micronaut-core Show documentation
Core components supporting the Micronaut Framework
There is a newer version: 4.7.9
/*
 * 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.core.beans;

import io.micronaut.core.annotation.Internal;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.core.util.CollectionUtils;

import io.micronaut.core.annotation.NonNull;
import io.micronaut.core.util.ObjectUtils;

import java.util.*;
import java.util.stream.Collectors;

/**
 * An implementation of {@link BeanMap} that uses a backing {@link BeanIntrospection}.
 *
 * @param  The bean type
 * @since 1.1
 * @author graemerocher
 */
@Internal
final class BeanIntrospectionMap implements BeanMap {
    private final BeanIntrospection beanIntrospection;
    private final T bean;

    /**
     * Default constructor.
     * @param beanIntrospection The introspection
     * @param bean The bean
     */
    BeanIntrospectionMap(BeanIntrospection beanIntrospection, T bean) {
        this.beanIntrospection = beanIntrospection;
        this.bean = bean;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        BeanIntrospectionMap that = (BeanIntrospectionMap) o;
        return beanIntrospection.equals(that.beanIntrospection) &&
                bean.equals(that.bean);
    }

    @Override
    public int hashCode() {
        return ObjectUtils.hash(beanIntrospection, bean);
    }

    @Override
    public @NonNull Class getBeanType() {
        return beanIntrospection.getBeanType();
    }

    @Override
    public int size() {
        return beanIntrospection.getPropertyNames().length;
    }

    @Override
    public boolean isEmpty() {
        return size() == 0;
    }

    @Override
    public boolean containsKey(Object key) {
        if (key == null) {
            return false;
        }
        return beanIntrospection.getProperty(key.toString()).isPresent();
    }

    @Override
    public boolean containsValue(Object value) {
        return values().contains(value);
    }

    @Override
    public Object get(Object key) {
        if (key == null) {
            return null;
        }
        return beanIntrospection.getProperty(key.toString()).map(bp -> bp.get(bean)).orElse(null);
    }

    @Override
    public Object put(String key, Object value) {
        if (key == null) {
            return null;
        }
        beanIntrospection.getProperty(key).ifPresent(bp -> {
            final Class