<commit_before>/*
 * Copyright 2002-2021 the original author or 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 org.springframework.beans.factory.support;

import java.io.IOException;
import java.util.Collections;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.core.env.Environment;
import org.springframework.core.env.EnvironmentCapable;
import org.springframework.core.env.StandardEnvironment;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Abstract base class for bean definition readers which implement
 * the {@link BeanDefinitionReader} interface.
 *
 * <p>Provides common properties like the bean factory to work on
 * and the class loader to use for loading bean classes.
 *
 * @author <NAME>
 * @author <NAME>
 * @since 11.12.2003
 * @see BeanDefinitionReaderUtils
 */
public abstract class AbstractBeanDefinitionReader implements BeanDefinitionReader, EnvironmentCapable {

	/** Logger available to subclasses. */
	protected final Log logger = LogFactory.getLog(getClass());

	private final BeanDefinitionRegistry registry;

	@Nullable
	private ResourceLoader resourceLoader;

	@Nullable
	private ClassLoader beanClassLoader;

	private Environment environment;

	private BeanNameGenerator beanNameGenerator = DefaultBeanNameGenerator.INSTANCE;


	/**
	 * Create a new AbstractBeanDefinitionReader for the given bean factory.
	 * <p>If the passed-in bean factory does not only implement the BeanDefinitionRegistry
	 * interface but also the ResourceLoader interface, it will be used as default
	 * ResourceLoader as well. This will usually be the case for
	 * {@link org.springframework.context.ApplicationContext} implementations.
	 * <p>If given a plain BeanDefinitionRegistry, the default ResourceLoader will be a
	 * {@link org.springframework.core.io.support.PathMatchingResourcePatternResolver}.
	 * <p>If the passed-in bean factory also implements {@link EnvironmentCapable} its
	 * environment will be used by this reader.  Otherwise, the reader will initialize and
	 * use a {@link StandardEnvironment}. All ApplicationContext implementations are
	 * EnvironmentCapable, while normal BeanFactory implementations are not.
	 * @param registry the BeanFactory to load bean definitions into,
	 * in the form of a BeanDefinitionRegistry
	 * @see #setResourceLoader
	 * @see #setEnvironment
	 */
	protected AbstractBeanDefinitionReader(BeanDefinitionRegistry registry) {
		Assert.notNull(registry, "BeanDefinitionRegistry must not be null");
		this.registry = registry;

		// Determine ResourceLoader to use.
		if (this.registry instanceof ResourceLoader) {
			this.resourceLoader = (ResourceLoader) this.registry;
		}
		else {
			this.resourceLoader = new PathMatchingResourcePatternResolver();
		}

		// Inherit Environment if possible
		if (this.registry instanceof EnvironmentCapable) {
			this.environment = ((EnvironmentCapable) this.registry).getEnvironment();
		}
		else {
			this.environment = new StandardEnvironment();
		}
	}


	/**
	 * Return the bean factory to register the bean definitions with.
	 * <p>The factory is exposed through the BeanDefinitionRegistry interface,
	 * encapsulating the methods that are relevant for bean definition handling.
	 */
	public final BeanDefinitionRegistry getBeanFactory() {
		return this.registry;
	}

	@Override
	public final BeanDefinitionRegistry getRegistry() {
		return this.registry;
	}

	/**
	 * Set the ResourceLoader to use for resource locations.
	 * If specifying a ResourcePatternResolver, the bean definition reader
	 * will be capable of resolving resource patterns to Resource arrays.
	 * <p>Default is PathMatchingResourcePatternResolver, also capable of
	 * resource pattern resolving through the ResourcePatternResolver interface.<commit_msg>Deprecate getBeanFactory() method in AbstractBeanDefinitionReader<commit_after>/*
 * Copyright 2002-2021 the original author or 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 org.springframework.beans.factory.support;

import java.io.IOException;
import java.util.Collections;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.core.env.Environment;
import org.springframework.core.env.EnvironmentCapable;
import org.springframework.core.env.StandardEnvironment;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Abstract base class for bean definition readers which implement
 * the {@link BeanDefinitionReader} interface.
 *
 * <p>Provides common properties like the bean factory to work on
 * and the class loader to use for loading bean classes.
 *
 * @author <NAME>
 * @author Chris Beams
 * @since 11.12.2003
 * @see BeanDefinitionReaderUtils
 */
public abstract class AbstractBeanDefinitionReader implements BeanDefinitionReader, EnvironmentCapable {

	/** Logger available to subclasses. */
	protected final Log logger = LogFactory.getLog(getClass());

	private final BeanDefinitionRegistry registry;

	@Nullable
	private ResourceLoader resourceLoader;

	@Nullable
	private ClassLoader beanClassLoader;

	private Environment environment;

	private BeanNameGenerator beanNameGenerator = DefaultBeanNameGenerator.INSTANCE;


	/**
	 * Create a new AbstractBeanDefinitionReader for the given bean factory.
	 * <p>If the passed-in bean factory does not only implement the BeanDefinitionRegistry
	 * interface but also the ResourceLoader interface, it will be used as default
	 * ResourceLoader as well. This will usually be the case for
	 * {@link org.springframework.context.ApplicationContext} implementations.
	 * <p>If given a plain BeanDefinitionRegistry, the default ResourceLoader will be a
	 * {@link org.springframework.core.io.support.PathMatchingResourcePatternResolver}.
	 * <p>If the passed-in bean factory also implements {@link EnvironmentCapable} its
	 * environment will be used by this reader.  Otherwise, the reader will initialize and
	 * use a {@link StandardEnvironment}. All ApplicationContext implementations are
	 * EnvironmentCapable, while normal BeanFactory implementations are not.
	 * @param registry the BeanFactory to load bean definitions into,
	 * in the form of a BeanDefinitionRegistry
	 * @see #setResourceLoader
	 * @see #setEnvironment
	 */
	protected AbstractBeanDefinitionReader(BeanDefinitionRegistry registry) {
		Assert.notNull(registry, "BeanDefinitionRegistry must not be null");
		this.registry = registry;

		// Determine ResourceLoader to use.
		if (this.registry instanceof ResourceLoader) {
			this.resourceLoader = (ResourceLoader) this.registry;
		}
		else {
			this.resourceLoader = new PathMatchingResourcePatternResolver();
		}

		// Inherit Environment if possible
		if (this.registry instanceof EnvironmentCapable) {
			this.environment = ((EnvironmentCapable) this.registry).getEnvironment();
		}
		else {
			this.environment = new StandardEnvironment();
		}
	}


	/**
	 * Return the bean factory to register the bean definitions with.
	 * <p>The factory is exposed through the BeanDefinitionRegistry interface,
	 * encapsulating the methods that are relevant for bean definition handling.
	 * @deprecated as of Spring Framework 5.3.15 in favor of {@link #getRegistry()},
	 * to be removed in Spring Framework 6.0
	 */
	@Deprecated
	public final BeanDefinitionRegistry getBeanFactory() {
		return this.registry;
	}

	@Override
	public final BeanDefinitionRegistry getRegistry() {
		return this.registry;
	}

	/**
	 * Set the ResourceLoader to use for resource locations.
	 * If specifying a ResourcePatternResolver, the bean definition reader
	 * will be capable of resolving resource patterns to Resource arrays.
	 * <p>Default is PathMatchingResourcePatternResolver, also capable of
	 * resource pattern resolving through the ResourcePatternResolver interface.
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