ValueObjectBinderTests.java

/*
 * Copyright 2012-2022 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.boot.context.properties.bind;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.reflect.Constructor;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDate;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Objects;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.EnabledForJreRange;
import org.junit.jupiter.api.condition.JRE;
import org.junit.jupiter.api.io.TempDir;

import org.springframework.boot.context.properties.source.ConfigurationPropertyName;
import org.springframework.boot.context.properties.source.ConfigurationPropertySource;
import org.springframework.boot.context.properties.source.MockConfigurationPropertySource;
import org.springframework.boot.testsupport.compiler.TestCompiler;
import org.springframework.core.ResolvableType;
import org.springframework.core.convert.ConversionService;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.test.util.ReflectionTestUtils;
import org.springframework.util.Assert;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

/**
 * Tests for {@link ValueObjectBinder}.
 *
 * @author Madhura Bhave
 * @author Phillip Webb
 */
class ValueObjectBinderTests {

	private final List<ConfigurationPropertySource> sources = new ArrayList<>();

	private final Binder binder = new Binder(this.sources);

	@Test
	void bindToClassShouldCreateBoundBean() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.int-value", "12");
		source.put("foo.long-value", "34");
		source.put("foo.boolean-value", "true");
		source.put("foo.string-value", "foo");
		source.put("foo.enum-value", "foo-bar");
		this.sources.add(source);
		ExampleValueBean bean = this.binder.bind("foo", Bindable.of(ExampleValueBean.class)).get();
		assertThat(bean.getIntValue()).isEqualTo(12);
		assertThat(bean.getLongValue()).isEqualTo(34);
		assertThat(bean.isBooleanValue()).isTrue();
		assertThat(bean.getStringValue()).isEqualTo("foo");
		assertThat(bean.getEnumValue()).isEqualTo(ExampleEnum.FOO_BAR);
	}

	@Test
	void bindToClassWhenHasNoPrefixShouldCreateBoundBean() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("int-value", "12");
		source.put("long-value", "34");
		source.put("boolean-value", "true");
		source.put("string-value", "foo");
		source.put("enum-value", "foo-bar");
		this.sources.add(source);
		ExampleValueBean bean = this.binder.bind(ConfigurationPropertyName.of(""), Bindable.of(ExampleValueBean.class))
				.get();
		assertThat(bean.getIntValue()).isEqualTo(12);
		assertThat(bean.getLongValue()).isEqualTo(34);
		assertThat(bean.isBooleanValue()).isTrue();
		assertThat(bean.getStringValue()).isEqualTo("foo");
		assertThat(bean.getEnumValue()).isEqualTo(ExampleEnum.FOO_BAR);
	}

	@Test
	void bindToAbstractClassWithShouldNotBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.name", "test");
		this.sources.add(source);
		boolean bound = this.binder.bind("foo", Bindable.of(ExampleAbstractBean.class)).isBound();
		assertThat(bound).isFalse();
	}

	@Test
	void bindToClassWithMultipleConstructorsShouldNotBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.int-value", "12");
		this.sources.add(source);
		boolean bound = this.binder.bind("foo", Bindable.of(MultipleConstructorsBean.class)).isBound();
		assertThat(bound).isFalse();
	}

	@Test
	void bindToClassWithMultipleConstructorsAndFilterShouldBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.int-value", "12");
		this.sources.add(source);
		Constructor<?>[] constructors = MultipleConstructorsBean.class.getDeclaredConstructors();
		Constructor<?> constructor = (constructors[0].getParameterCount() == 1) ? constructors[0] : constructors[1];
		Binder binder = new Binder(this.sources, null, (ConversionService) null, null, null,
				(bindable, isNestedConstructorBinding) -> constructor);
		MultipleConstructorsBean bound = binder.bind("foo", Bindable.of(MultipleConstructorsBean.class)).get();
		assertThat(bound.getIntValue()).isEqualTo(12);
	}

	@Test
	void bindToClassWithOnlyDefaultConstructorShouldNotBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.int-value", "12");
		this.sources.add(source);
		boolean bound = this.binder.bind("foo", Bindable.of(DefaultConstructorBean.class)).isBound();
		assertThat(bound).isFalse();
	}

	@Test
	void bindToClassWithMultipleConstructorsWhenOnlyOneIsNotPrivateShouldBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.int-value", "12");
		this.sources.add(source);
		MultipleConstructorsOnlyOneNotPrivateBean bean = this.binder
				.bind("foo", Bindable.of(MultipleConstructorsOnlyOneNotPrivateBean.class)).get();
		bean = bean.withString("test");
		assertThat(bean.getIntValue()).isEqualTo(12);
		assertThat(bean.getStringValue()).isEqualTo("test");
	}

	@Test
	void bindToClassShouldBindNested() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.value-bean.int-value", "123");
		source.put("foo.value-bean.long-value", "34");
		source.put("foo.value-bean.string-value", "foo");
		this.sources.add(source);
		ExampleNestedBean bean = this.binder.bind("foo", Bindable.of(ExampleNestedBean.class)).get();
		assertThat(bean.getValueBean().getIntValue()).isEqualTo(123);
		assertThat(bean.getValueBean().getLongValue()).isEqualTo(34);
		assertThat(bean.getValueBean().isBooleanValue()).isFalse();
		assertThat(bean.getValueBean().getStringValue()).isEqualTo("foo");
		assertThat(bean.getValueBean().getEnumValue()).isNull();
	}

	@Test
	void bindToClassWithNoValueForPrimitiveShouldUseDefault() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.string-value", "foo");
		this.sources.add(source);
		ExampleValueBean bean = this.binder.bind("foo", Bindable.of(ExampleValueBean.class)).get();
		assertThat(bean.getIntValue()).isEqualTo(0);
		assertThat(bean.getLongValue()).isEqualTo(0);
		assertThat(bean.isBooleanValue()).isEqualTo(false);
		assertThat(bean.getStringValue()).isEqualTo("foo");
	}

	@Test
	void bindToClassWithNoValueAndDefaultValueShouldNotBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.string-value", "foo");
		this.sources.add(source);
		assertThat(this.binder.bind("foo", Bindable.of(ExampleDefaultValueBean.class)).isBound()).isFalse();
	}

	@Test
	void bindToClassWhenNoParameterBoundShouldReturnNull() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		this.sources.add(source.nonIterable());
		BindResult<ExampleFailingConstructorBean> result = this.binder.bind("foo",
				Bindable.of(ExampleFailingConstructorBean.class));
		assertThat(result.isBound()).isFalse();
	}

	@Test
	void bindWithAnnotations() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.date", "2014-04-01");
		this.sources.add(source);
		ConverterAnnotatedExampleBean bean = this.binder.bind("foo", Bindable.of(ConverterAnnotatedExampleBean.class))
				.get();
		assertThat(bean.getDate().toString()).isEqualTo("2014-04-01");
	}

	@Test
	void bindWithAnnotationsAndDefaultValue() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.bar", "hello");
		this.sources.add(source);
		ConverterAnnotatedExampleBean bean = this.binder.bind("foo", Bindable.of(ConverterAnnotatedExampleBean.class))
				.get();
		assertThat(bean.getDate().toString()).isEqualTo("2019-05-10");
	}

	@Test
	void bindToClassWhenHasPackagePrivateConstructorShouldBind() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.property", "test");
		this.sources.add(source);
		ExamplePackagePrivateConstructorBean bound = this.binder
				.bind("foo", Bindable.of(ExamplePackagePrivateConstructorBean.class)).get();
		assertThat(bound.getProperty()).isEqualTo("test");
	}

	@Test
	void createShouldReturnCreatedValue() {
		ExampleValueBean value = this.binder.bindOrCreate("foo", Bindable.of(ExampleValueBean.class));
		assertThat(value.getIntValue()).isEqualTo(0);
		assertThat(value.getLongValue()).isEqualTo(0);
		assertThat(value.isBooleanValue()).isEqualTo(false);
		assertThat(value.getStringValue()).isNull();
		assertThat(value.getEnumValue()).isNull();
	}

	@Test
	void createWithNestedShouldReturnCreatedValue() {
		ExampleNestedBean value = this.binder.bindOrCreate("foo", Bindable.of(ExampleNestedBean.class));
		assertThat(value.getValueBean()).isEqualTo(null);
	}

	@Test
	void createWithDefaultValuesShouldReturnCreatedWithDefaultValues() {
		ExampleDefaultValueBean value = this.binder.bindOrCreate("foo", Bindable.of(ExampleDefaultValueBean.class));
		assertThat(value.getIntValue()).isEqualTo(5);
		assertThat(value.getStringsList()).containsOnly("a", "b", "c");
		assertThat(value.getCustomList()).containsOnly("x,y,z");
	}

	@Test
	void createWithDefaultValuesAndAnnotationsShouldReturnCreatedWithDefaultValues() {
		ConverterAnnotatedExampleBean bean = this.binder.bindOrCreate("foo",
				Bindable.of(ConverterAnnotatedExampleBean.class));
		assertThat(bean.getDate().toString()).isEqualTo("2019-05-10");
	}

	@Test
	void bindWhenAllPropertiesBoundShouldClearConfigurationProperty() { // gh-18704
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.bar", "hello");
		this.sources.add(source);
		Bindable<ValidatingConstructorBean> target = Bindable.of(ValidatingConstructorBean.class);
		assertThatExceptionOfType(BindException.class).isThrownBy(() -> this.binder.bind("foo", target))
				.satisfies(this::noConfigurationProperty);
	}

	@Test
	void bindToClassShouldBindWithGenerics() {
		// gh-19156
		ResolvableType type = ResolvableType.forClassWithGenerics(Map.class, String.class, String.class);
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("foo.value.bar", "baz");
		this.sources.add(source);
		GenericValue<Map<String, String>> bean = this.binder.bind("foo", Bindable
				.<GenericValue<Map<String, String>>>of(ResolvableType.forClassWithGenerics(GenericValue.class, type)))
				.get();
		assertThat(bean.getValue().get("bar")).isEqualTo("baz");
	}

	@Test
	void bindWhenParametersWithDefaultValueShouldReturnNonNullValues() {
		NestedConstructorBeanWithDefaultValue bound = this.binder.bindOrCreate("foo",
				Bindable.of(NestedConstructorBeanWithDefaultValue.class));
		assertThat(bound.getNestedImmutable().getFoo()).isEqualTo("hello");
		assertThat(bound.getNestedJavaBean()).isNotNull();
	}

	@Test
	void bindWhenJavaLangParameterWithEmptyDefaultValueShouldThrowException() {
		assertThatExceptionOfType(BindException.class)
				.isThrownBy(() -> this.binder.bindOrCreate("foo",
						Bindable.of(NestedConstructorBeanWithEmptyDefaultValueForJavaLangTypes.class)))
				.withStackTraceContaining("Parameter of type java.lang.String must have a non-empty default value.");
	}

	@Test
	void bindWhenCollectionParameterWithEmptyDefaultValueShouldThrowException() {
		assertThatExceptionOfType(BindException.class)
				.isThrownBy(() -> this.binder.bindOrCreate("foo",
						Bindable.of(NestedConstructorBeanWithEmptyDefaultValueForCollectionTypes.class)))
				.withStackTraceContaining(
						"Parameter of type java.util.List<java.lang.String> must have a non-empty default value.");
	}

	@Test
	void bindWhenMapParametersWithEmptyDefaultValueShouldThrowException() {
		assertThatExceptionOfType(BindException.class)
				.isThrownBy(() -> this.binder.bindOrCreate("foo",
						Bindable.of(NestedConstructorBeanWithEmptyDefaultValueForMapTypes.class)))
				.withStackTraceContaining(
						"Parameter of type java.util.Map<java.lang.String, java.lang.String> must have a non-empty default value.");
	}

	@Test
	void bindWhenArrayParameterWithEmptyDefaultValueShouldThrowException() {
		assertThatExceptionOfType(BindException.class)
				.isThrownBy(() -> this.binder.bindOrCreate("foo",
						Bindable.of(NestedConstructorBeanWithEmptyDefaultValueForArrayTypes.class)))
				.withStackTraceContaining("Parameter of type java.lang.String[] must have a non-empty default value.");
	}

	@Test
	void bindWhenEnumParameterWithEmptyDefaultValueShouldThrowException() {
		assertThatExceptionOfType(BindException.class)
				.isThrownBy(() -> this.binder.bindOrCreate("foo",
						Bindable.of(NestedConstructorBeanWithEmptyDefaultValueForEnumTypes.class)))
				.withStackTraceContaining(
						"Parameter of type org.springframework.boot.context.properties.bind.ValueObjectBinderTests$NestedConstructorBeanWithEmptyDefaultValueForEnumTypes$Foo must have a non-empty default value.");
	}

	@Test
	void bindWhenPrimitiveParameterWithEmptyDefaultValueShouldThrowException() {
		assertThatExceptionOfType(BindException.class)
				.isThrownBy(() -> this.binder.bindOrCreate("foo",
						Bindable.of(NestedConstructorBeanWithEmptyDefaultValueForPrimitiveTypes.class)))
				.withStackTraceContaining("Parameter of type int must have a non-empty default value.");
	}

	@Test
	void bindWhenBindingToPathTypeWithValue() { // gh-21263
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("test.name", "test");
		source.put("test.path", "specific_value");
		this.sources.add(source);
		Bindable<PathBean> target = Bindable.of(PathBean.class);
		PathBean bound = this.binder.bind("test", target).get();
		assertThat(bound.getName()).isEqualTo("test");
		assertThat(bound.getPath()).isEqualTo(Paths.get("specific_value"));
	}

	@Test
	void bindWhenBindingToPathTypeWithDefaultValue() { // gh-21263
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("test.name", "test");
		this.sources.add(source);
		Bindable<PathBean> target = Bindable.of(PathBean.class);
		PathBean bound = this.binder.bindOrCreate("test", target);
		assertThat(bound.getName()).isEqualTo("test");
		assertThat(bound.getPath()).isEqualTo(Paths.get("default_value"));
	}

	@Test
	void bindToAnnotationNamedParameter() {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("test.import", "test");
		this.sources.add(source);
		Bindable<NamedParameter> target = Bindable.of(NamedParameter.class);
		NamedParameter bound = this.binder.bindOrCreate("test", target);
		assertThat(bound.getImportName()).isEqualTo("test");
	}

	@Test
	@EnabledForJreRange(min = JRE.JAVA_16)
	void bindToRecordWithDefaultValue(@TempDir File tempDir) throws IOException, ClassNotFoundException {
		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
		source.put("test.record.property1", "value-from-config-1");
		this.sources.add(source);
		File recordProperties = new File(tempDir, "RecordProperties.java");
		try (PrintWriter writer = new PrintWriter(new FileWriter(recordProperties))) {
			writer.println("public record RecordProperties(");
			writer.println(
					"@org.springframework.boot.context.properties.bind.DefaultValue(\"default-value-1\") String property1,");
			writer.println(
					"@org.springframework.boot.context.properties.bind.DefaultValue(\"default-value-2\") String property2");
			writer.println(") {");
			writer.println("}");
		}
		TestCompiler compiler = new TestCompiler(tempDir);
		compiler.getTask(Arrays.asList(recordProperties)).call();
		ClassLoader ucl = new URLClassLoader(new URL[] { tempDir.toURI().toURL() });
		Object bean = this.binder.bind("test.record", Class.forName("RecordProperties", true, ucl)).get();
		assertThat(ReflectionTestUtils.getField(bean, "property1")).isEqualTo("value-from-config-1");
		assertThat(ReflectionTestUtils.getField(bean, "property2")).isEqualTo("default-value-2");
	}

	private void noConfigurationProperty(BindException ex) {
		assertThat(ex.getProperty()).isNull();
	}

	static class ExampleValueBean {

		private final int intValue;

		private final long longValue;

		private final boolean booleanValue;

		private final String stringValue;

		private final ExampleEnum enumValue;

		ExampleValueBean(int intValue, long longValue, boolean booleanValue, String stringValue,
				ExampleEnum enumValue) {
			this.intValue = intValue;
			this.longValue = longValue;
			this.booleanValue = booleanValue;
			this.stringValue = stringValue;
			this.enumValue = enumValue;
		}

		int getIntValue() {
			return this.intValue;
		}

		long getLongValue() {
			return this.longValue;
		}

		boolean isBooleanValue() {
			return this.booleanValue;
		}

		String getStringValue() {
			return this.stringValue;
		}

		ExampleEnum getEnumValue() {
			return this.enumValue;
		}

	}

	public enum ExampleEnum {

		FOO_BAR,

		BAR_BAZ

	}

	static class MultipleConstructorsBean {

		private final int intValue;

		MultipleConstructorsBean(int intValue) {
			this(intValue, 23L, "hello");
		}

		MultipleConstructorsBean(int intValue, long longValue, String stringValue) {
			this.intValue = intValue;
		}

		int getIntValue() {
			return this.intValue;
		}

	}

	static class MultipleConstructorsOnlyOneNotPrivateBean {

		private final int intValue;

		private final String stringValue;

		MultipleConstructorsOnlyOneNotPrivateBean(int intValue) {
			this(intValue, 23L, "hello");
		}

		private MultipleConstructorsOnlyOneNotPrivateBean(int intValue, long longValue, String stringValue) {
			this.intValue = intValue;
			this.stringValue = stringValue;
		}

		int getIntValue() {
			return this.intValue;
		}

		String getStringValue() {
			return this.stringValue;
		}

		MultipleConstructorsOnlyOneNotPrivateBean withString(String stringValue) {
			return new MultipleConstructorsOnlyOneNotPrivateBean(this.intValue, 0, stringValue);
		}

	}

	abstract static class ExampleAbstractBean {

		private final String name;

		ExampleAbstractBean(String name) {
			this.name = name;
		}

		String getName() {
			return this.name;
		}

	}

	static class DefaultConstructorBean {

		DefaultConstructorBean() {
		}

	}

	static class ExampleNestedBean {

		private final ExampleValueBean valueBean;

		ExampleNestedBean(ExampleValueBean valueBean) {
			this.valueBean = valueBean;
		}

		ExampleValueBean getValueBean() {
			return this.valueBean;
		}

	}

	static class ExampleDefaultValueBean {

		private final int intValue;

		private final List<String> stringsList;

		private final List<String> customList;

		ExampleDefaultValueBean(@DefaultValue("5") int intValue,
				@DefaultValue({ "a", "b", "c" }) List<String> stringsList,
				@DefaultValue("x,y,z") List<String> customList) {
			this.intValue = intValue;
			this.stringsList = stringsList;
			this.customList = customList;
		}

		int getIntValue() {
			return this.intValue;
		}

		List<String> getStringsList() {
			return this.stringsList;
		}

		List<String> getCustomList() {
			return this.customList;
		}

	}

	static class ExampleFailingConstructorBean {

		private final String name;

		private final Object value;

		ExampleFailingConstructorBean(String name, String value) {
			Objects.requireNonNull(name, "'name' must be not null.");
			Objects.requireNonNull(value, "'value' must be not null.");
			this.name = name;
			this.value = value;
		}

		String getName() {
			return this.name;
		}

		Object getValue() {
			return this.value;
		}

	}

	static class ConverterAnnotatedExampleBean {

		private final LocalDate date;

		private final String bar;

		ConverterAnnotatedExampleBean(
				@DefaultValue("2019-05-10") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date, String bar) {
			this.date = date;
			this.bar = bar;
		}

		LocalDate getDate() {
			return this.date;
		}

		String getBar() {
			return this.bar;
		}

	}

	static class ExamplePackagePrivateConstructorBean {

		private final String property;

		ExamplePackagePrivateConstructorBean(String property) {
			this.property = property;
		}

		String getProperty() {
			return this.property;
		}

	}

	static class ValidatingConstructorBean {

		private final String foo;

		private final String bar;

		ValidatingConstructorBean(String foo, String bar) {
			Assert.notNull(foo, "Foo must not be null");
			this.foo = foo;
			this.bar = bar;
		}

		String getFoo() {
			return this.foo;
		}

		String getBar() {
			return this.bar;
		}

	}

	static class GenericValue<T> {

		private final T value;

		GenericValue(T value) {
			this.value = value;
		}

		T getValue() {
			return this.value;
		}

	}

	static class NestedConstructorBeanWithDefaultValue {

		private final NestedImmutable nestedImmutable;

		private final NestedJavaBean nestedJavaBean;

		NestedConstructorBeanWithDefaultValue(@DefaultValue NestedImmutable nestedImmutable,
				@DefaultValue NestedJavaBean nestedJavaBean) {
			this.nestedImmutable = nestedImmutable;
			this.nestedJavaBean = nestedJavaBean;
		}

		NestedImmutable getNestedImmutable() {
			return this.nestedImmutable;
		}

		NestedJavaBean getNestedJavaBean() {
			return this.nestedJavaBean;
		}

	}

	static class NestedImmutable {

		private final String foo;

		private final String bar;

		NestedImmutable(@DefaultValue("hello") String foo, String bar) {
			this.foo = foo;
			this.bar = bar;
		}

		String getFoo() {
			return this.foo;
		}

		String getBar() {
			return this.bar;
		}

	}

	static class NestedJavaBean {

		private String value;

		String getValue() {
			return this.value;
		}

	}

	static class NestedConstructorBeanWithEmptyDefaultValueForJavaLangTypes {

		private final String stringValue;

		NestedConstructorBeanWithEmptyDefaultValueForJavaLangTypes(@DefaultValue String stringValue) {
			this.stringValue = stringValue;
		}

		String getStringValue() {
			return this.stringValue;
		}

	}

	static class NestedConstructorBeanWithEmptyDefaultValueForCollectionTypes {

		private final List<String> listValue;

		NestedConstructorBeanWithEmptyDefaultValueForCollectionTypes(@DefaultValue List<String> listValue) {
			this.listValue = listValue;
		}

		List<String> getListValue() {
			return this.listValue;
		}

	}

	static class NestedConstructorBeanWithEmptyDefaultValueForMapTypes {

		private final Map<String, String> mapValue;

		NestedConstructorBeanWithEmptyDefaultValueForMapTypes(@DefaultValue Map<String, String> mapValue) {
			this.mapValue = mapValue;
		}

		Map<String, String> getMapValue() {
			return this.mapValue;
		}

	}

	static class NestedConstructorBeanWithEmptyDefaultValueForArrayTypes {

		private final String[] arrayValue;

		NestedConstructorBeanWithEmptyDefaultValueForArrayTypes(@DefaultValue String[] arrayValue,
				@DefaultValue Integer intValue) {
			this.arrayValue = arrayValue;
		}

		String[] getArrayValue() {
			return this.arrayValue;
		}

	}

	static class NestedConstructorBeanWithEmptyDefaultValueForEnumTypes {

		private Foo foo;

		NestedConstructorBeanWithEmptyDefaultValueForEnumTypes(@DefaultValue Foo foo) {
			this.foo = foo;
		}

		Foo getFoo() {
			return this.foo;
		}

		enum Foo {

			BAR, BAZ

		}

	}

	static class NestedConstructorBeanWithEmptyDefaultValueForPrimitiveTypes {

		private int intValue;

		NestedConstructorBeanWithEmptyDefaultValueForPrimitiveTypes(@DefaultValue int intValue) {
			this.intValue = intValue;
		}

		int getIntValue() {
			return this.intValue;
		}

	}

	static class PathBean {

		private final String name;

		private final Path path;

		PathBean(String name, @DefaultValue("default_value") Path path) {
			this.name = name;
			this.path = path;
		}

		String getName() {
			return this.name;
		}

		Path getPath() {
			return this.path;
		}

	}

	static class NamedParameter {

		private final String importName;

		NamedParameter(@Name("import") String importName) {
			this.importName = importName;
		}

		String getImportName() {
			return this.importName;
		}

	}

}