/*
* Copyright 2002-2016 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
*
* 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 org.springframework.test.context;
import java.util.Arrays;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.style.ToStringCreator;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
/**
* {@code ContextConfigurationAttributes} encapsulates the context configuration
* attributes declared via {@link ContextConfiguration @ContextConfiguration}.
*
* @author Sam Brannen
* @author Phillip Webb
* @since 3.1
* @see ContextConfiguration
* @see SmartContextLoader#processContextConfiguration(ContextConfigurationAttributes)
* @see MergedContextConfiguration
*/
public class ContextConfigurationAttributes {
private static final String[] EMPTY_LOCATIONS = new String[0];
private static final Class<?>[] EMPTY_CLASSES = new Class<?>[0];
private static final Log logger = LogFactory.getLog(ContextConfigurationAttributes.class);
private final Class<?> declaringClass;
private Class<?>[] classes;
private String[] locations;
private final boolean inheritLocations;
private final Class<? extends ApplicationContextInitializer<? extends ConfigurableApplicationContext>>[] initializers;
private final boolean inheritInitializers;
private final String name;
private final Class<? extends ContextLoader> contextLoaderClass;
/**
* Construct a new {@link ContextConfigurationAttributes} instance with default values.
* @param declaringClass the test class that declared {@code @ContextConfiguration},
* either explicitly or implicitly
* @since 4.3
*/
@SuppressWarnings("unchecked")
public ContextConfigurationAttributes(Class<?> declaringClass) {
this(declaringClass, EMPTY_LOCATIONS, EMPTY_CLASSES, false, (Class[]) EMPTY_CLASSES, true, ContextLoader.class);
}
/**
* Construct a new {@link ContextConfigurationAttributes} instance for the
* supplied {@link ContextConfiguration @ContextConfiguration} annotation and
* the {@linkplain Class test class} that declared it.
* @param declaringClass the test class that declared {@code @ContextConfiguration}
* @param contextConfiguration the annotation from which to retrieve the attributes
*/
public ContextConfigurationAttributes(Class<?> declaringClass, ContextConfiguration contextConfiguration) {
this(declaringClass, contextConfiguration.locations(), contextConfiguration.classes(),
contextConfiguration.inheritLocations(), contextConfiguration.initializers(),
contextConfiguration.inheritInitializers(), contextConfiguration.name(), contextConfiguration.loader());
}
/**
* Construct a new {@link ContextConfigurationAttributes} instance for the
* supplied {@link AnnotationAttributes} (parsed from a
* {@link ContextConfiguration @ContextConfiguration} annotation) and
* the {@linkplain Class test class} that declared them.
* @param declaringClass the test class that declared {@code @ContextConfiguration}
* @param annAttrs the annotation attributes from which to retrieve the attributes
*/
@SuppressWarnings("unchecked")
public ContextConfigurationAttributes(Class<?> declaringClass, AnnotationAttributes annAttrs) {
this(declaringClass, annAttrs.getStringArray("locations"), annAttrs.getClassArray("classes"), annAttrs.getBoolean("inheritLocations"),
(Class<? extends ApplicationContextInitializer<? extends ConfigurableApplicationContext>>[]) annAttrs.getClassArray("initializers"),
annAttrs.getBoolean("inheritInitializers"), annAttrs.getString("name"), (Class<? extends ContextLoader>) annAttrs.getClass("loader"));
}
/**
* Construct a new {@link ContextConfigurationAttributes} instance for the
* {@linkplain Class test class} that declared the
* {@link ContextConfiguration @ContextConfiguration} annotation and its
* corresponding attributes.
* @param declaringClass the test class that declared {@code @ContextConfiguration}
* @param locations the resource locations declared via {@code @ContextConfiguration}
* @param classes the annotated classes declared via {@code @ContextConfiguration}
* @param inheritLocations the {@code inheritLocations} flag declared via {@code @ContextConfiguration}
* @param initializers the context initializers declared via {@code @ContextConfiguration}
* @param inheritInitializers the {@code inheritInitializers} flag declared via {@code @ContextConfiguration}
* @param contextLoaderClass the {@code ContextLoader} class declared via {@code @ContextConfiguration}
* @throws IllegalArgumentException if the {@code declaringClass} or {@code contextLoaderClass} is
* {@code null}
*/
public ContextConfigurationAttributes(
Class<?> declaringClass, String[] locations, Class<?>[] classes, boolean inheritLocations,
Class<? extends ApplicationContextInitializer<? extends ConfigurableApplicationContext>>[] initializers,
boolean inheritInitializers, Class<? extends ContextLoader> contextLoaderClass) {
this(declaringClass, locations, classes, inheritLocations, initializers, inheritInitializers, null,
contextLoaderClass);
}
/**
* Construct a new {@link ContextConfigurationAttributes} instance for the
* {@linkplain Class test class} that declared the
* {@link ContextConfiguration @ContextConfiguration} annotation and its
* corresponding attributes.
* @param declaringClass the test class that declared {@code @ContextConfiguration}
* @param locations the resource locations declared via {@code @ContextConfiguration}
* @param classes the annotated classes declared via {@code @ContextConfiguration}
* @param inheritLocations the {@code inheritLocations} flag declared via {@code @ContextConfiguration}
* @param initializers the context initializers declared via {@code @ContextConfiguration}
* @param inheritInitializers the {@code inheritInitializers} flag declared via {@code @ContextConfiguration}
* @param name the name of level in the context hierarchy, or {@code null} if not applicable
* @param contextLoaderClass the {@code ContextLoader} class declared via {@code @ContextConfiguration}
* @throws IllegalArgumentException if the {@code declaringClass} or {@code contextLoaderClass} is
* {@code null}
*/
public ContextConfigurationAttributes(
Class<?> declaringClass, String[] locations, Class<?>[] classes, boolean inheritLocations,
Class<? extends ApplicationContextInitializer<? extends ConfigurableApplicationContext>>[] initializers,
boolean inheritInitializers, String name, Class<? extends ContextLoader> contextLoaderClass) {
Assert.notNull(declaringClass, "declaringClass must not be null");
Assert.notNull(contextLoaderClass, "contextLoaderClass must not be null");
if (!ObjectUtils.isEmpty(locations) && !ObjectUtils.isEmpty(classes) && logger.isDebugEnabled()) {
logger.debug(String.format(
"Test class [%s] has been configured with @ContextConfiguration's 'locations' (or 'value') %s " +
"and 'classes' %s attributes. Most SmartContextLoader implementations support " +
"only one declaration of resources per @ContextConfiguration annotation.",
declaringClass.getName(), ObjectUtils.nullSafeToString(locations),
ObjectUtils.nullSafeToString(classes)));
}
this.declaringClass = declaringClass;
this.locations = locations;
this.classes = classes;
this.inheritLocations = inheritLocations;
this.initializers = initializers;
this.inheritInitializers = inheritInitializers;
this.name = (StringUtils.hasText(name) ? name : null);
this.contextLoaderClass = contextLoaderClass;
}
/**
* Get the {@linkplain Class class} that declared the
* {@link ContextConfiguration @ContextConfiguration} annotation, either explicitly
* or implicitly.
* @return the declaring class (never {@code null})
*/
public Class<?> getDeclaringClass() {
return this.declaringClass;
}
/**
* Set the <em>processed</em> annotated classes, effectively overriding the
* original value declared via {@link ContextConfiguration @ContextConfiguration}.
* @see #getClasses()
*/
public void setClasses(Class<?>... classes) {
this.classes = classes;
}
/**
* Get the annotated classes that were declared via
* {@link ContextConfiguration @ContextConfiguration}.
* <p>Note: this is a mutable property. The returned value may therefore
* represent a <em>processed</em> value that does not match the original value
* declared via {@link ContextConfiguration @ContextConfiguration}.
* @return the annotated classes; potentially {@code null} or <em>empty</em>
* @see ContextConfiguration#classes
* @see #setClasses(Class[])
*/
public Class<?>[] getClasses() {
return this.classes;
}
/**
* Determine if this {@code ContextConfigurationAttributes} instance has
* class-based resources.
* @return {@code true} if the {@link #getClasses() classes} array is not empty
* @see #hasResources()
* @see #hasLocations()
*/
public boolean hasClasses() {
return !ObjectUtils.isEmpty(getClasses());
}
/**
* Set the <em>processed</em> resource locations, effectively overriding the
* original value declared via {@link ContextConfiguration @ContextConfiguration}.
* @see #getLocations()
*/
public void setLocations(String... locations) {
this.locations = locations;
}
/**
* Get the resource locations that were declared via
* {@link ContextConfiguration @ContextConfiguration}.
* <p>Note: this is a mutable property. The returned value may therefore
* represent a <em>processed</em> value that does not match the original value
* declared via {@link ContextConfiguration @ContextConfiguration}.
* @return the resource locations; potentially {@code null} or <em>empty</em>
* @see ContextConfiguration#value
* @see ContextConfiguration#locations
* @see #setLocations(String[])
*/
public String[] getLocations() {
return this.locations;
}
/**
* Determine if this {@code ContextConfigurationAttributes} instance has
* path-based resource locations.
* @return {@code true} if the {@link #getLocations() locations} array is not empty
* @see #hasResources()
* @see #hasClasses()
*/
public boolean hasLocations() {
return !ObjectUtils.isEmpty(getLocations());
}
/**
* Determine if this {@code ContextConfigurationAttributes} instance has
* either path-based resource locations or class-based resources.
* @return {@code true} if either the {@link #getLocations() locations}
* or the {@link #getClasses() classes} array is not empty
* @see #hasLocations()
* @see #hasClasses()
*/
public boolean hasResources() {
return (hasLocations() || hasClasses());
}
/**
* Get the {@code inheritLocations} flag that was declared via
* {@link ContextConfiguration @ContextConfiguration}.
* @return the {@code inheritLocations} flag
* @see ContextConfiguration#inheritLocations
*/
public boolean isInheritLocations() {
return this.inheritLocations;
}
/**
* Get the {@code ApplicationContextInitializer} classes that were declared via
* {@link ContextConfiguration @ContextConfiguration}.
* @return the {@code ApplicationContextInitializer} classes
* @since 3.2
*/
public Class<? extends ApplicationContextInitializer<? extends ConfigurableApplicationContext>>[] getInitializers() {
return this.initializers;
}
/**
* Get the {@code inheritInitializers} flag that was declared via
* {@link ContextConfiguration @ContextConfiguration}.
* @return the {@code inheritInitializers} flag
* @since 3.2
*/
public boolean isInheritInitializers() {
return this.inheritInitializers;
}
/**
* Get the name of the context hierarchy level that was declared via
* {@link ContextConfiguration @ContextConfiguration}.
* @return the name of the context hierarchy level or {@code null} if not applicable
* @see ContextConfiguration#name()
* @since 3.2.2
*/
public String getName() {
return this.name;
}
/**
* Get the {@code ContextLoader} class that was declared via
* {@link ContextConfiguration @ContextConfiguration}.
* @return the {@code ContextLoader} class
* @see ContextConfiguration#loader
*/
public Class<? extends ContextLoader> getContextLoaderClass() {
return this.contextLoaderClass;
}
/**
* Determine if the supplied object is equal to this
* {@code ContextConfigurationAttributes} instance by comparing both object's
* {@linkplain #getDeclaringClass() declaring class},
* {@linkplain #getLocations() locations},
* {@linkplain #getClasses() annotated classes},
* {@linkplain #isInheritLocations() inheritLocations flag},
* {@linkplain #getInitializers() context initializer classes},
* {@linkplain #isInheritInitializers() inheritInitializers flag}, and the
* {@link #getContextLoaderClass() ContextLoader class}.
*/
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof ContextConfigurationAttributes)) {
return false;
}
ContextConfigurationAttributes otherAttr = (ContextConfigurationAttributes) other;
return (ObjectUtils.nullSafeEquals(this.declaringClass, otherAttr.declaringClass) &&
Arrays.equals(this.classes, otherAttr.classes)) &&
Arrays.equals(this.locations, otherAttr.locations) &&
this.inheritLocations == otherAttr.inheritLocations &&
Arrays.equals(this.initializers, otherAttr.initializers) &&
this.inheritInitializers == otherAttr.inheritInitializers &&
ObjectUtils.nullSafeEquals(this.name, otherAttr.name) &&
ObjectUtils.nullSafeEquals(this.contextLoaderClass, otherAttr.contextLoaderClass);
}
/**
* Generate a unique hash code for all properties of this
* {@code ContextConfigurationAttributes} instance excluding the
* {@linkplain #getName() name}.
*/
@Override
public int hashCode() {
int result = this.declaringClass.hashCode();
result = 31 * result + Arrays.hashCode(this.classes);
result = 31 * result + Arrays.hashCode(this.locations);
result = 31 * result + Arrays.hashCode(this.initializers);
return result;
}
/**
* Provide a String representation of the context configuration attributes
* and declaring class.
*/
@Override
public String toString() {
return new ToStringCreator(this)
.append("declaringClass", this.declaringClass.getName())
.append("classes", ObjectUtils.nullSafeToString(this.classes))
.append("locations", ObjectUtils.nullSafeToString(this.locations))
.append("inheritLocations", this.inheritLocations)
.append("initializers", ObjectUtils.nullSafeToString(this.initializers))
.append("inheritInitializers", this.inheritInitializers)
.append("name", this.name)
.append("contextLoaderClass", this.contextLoaderClass.getName())
.toString();
}
}