Drop IgnoreNestedPropertiesBindHandler and its tests

This should have been done as part of abdc2390.

Closes gh-8657

spring-boot/src/main/java/org/springframework/boot/context/properties/bind/handler/IgnoreNestedPropertiesBindHandler.java

-/*
- * Copyright 2012-2017 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.boot.context.properties.bind.handler;
-
-import org.springframework.boot.context.properties.bind.AbstractBindHandler;
-import org.springframework.boot.context.properties.bind.BindContext;
-import org.springframework.boot.context.properties.bind.BindHandler;
-import org.springframework.boot.context.properties.bind.Bindable;
-import org.springframework.boot.context.properties.source.ConfigurationPropertyName;
-
-/**
- * {@link BindHandler} to limit binding to only first level properties.
- *
- * @author Phillip Webb
- * @author Madhura Bhave
- * @since 2.0.0
- */
-public class IgnoreNestedPropertiesBindHandler extends AbstractBindHandler {
-
-	public IgnoreNestedPropertiesBindHandler() {
-		super();
-	}
-
-	public IgnoreNestedPropertiesBindHandler(BindHandler parent) {
-		super(parent);
-	}
-
-	@Override
-	public boolean onStart(ConfigurationPropertyName name, Bindable<?> target,
-			BindContext context) {
-		if (context.getDepth() > 1) {
-			return false;
-		}
-		return super.onStart(name, target, context);
-	}
-
-}

spring-boot/src/test/java/org/springframework/boot/context/properties/bind/handler/IgnoreNestedPropertiesBindHandlerTests.java

-/*
- * Copyright 2012-2017 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.boot.context.properties.bind.handler;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.junit.Before;
-import org.junit.Test;
-
-import org.springframework.boot.context.properties.bind.Bindable;
-import org.springframework.boot.context.properties.bind.Binder;
-import org.springframework.boot.context.properties.source.ConfigurationPropertySource;
-import org.springframework.boot.context.properties.source.MockConfigurationPropertySource;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-/**
- * Tests for {@link IgnoreNestedPropertiesBindHandler}.
- *
- * @author Phillip Webb
- * @author Madhura Bhave
- */
-public class IgnoreNestedPropertiesBindHandlerTests {
-
-	private List<ConfigurationPropertySource> sources = new ArrayList<>();
-
-	private Binder binder;
-
-	@Before
-	public void setup() {
-		MockConfigurationPropertySource source = new MockConfigurationPropertySource();
-		source.put("example.foo", "foovalue");
-		source.put("example.nested.bar", "barvalue");
-		this.sources.add(source);
-		this.binder = new Binder(this.sources);
-	}
-
-	@Test
-	public void bindWhenNotIgnoringNestedShouldBindAll() throws Exception {
-		Example bound = this.binder.bind("example", Bindable.of(Example.class)).get();
-		assertThat(bound.getFoo()).isEqualTo("foovalue");
-		assertThat(bound.getNested().getBar()).isEqualTo("barvalue");
-	}
-
-	@Test
-	public void bindWhenIgnoringNestedShouldFilterNested() throws Exception {
-		Example bound = this.binder.bind("example", Bindable.of(Example.class),
-				new IgnoreNestedPropertiesBindHandler()).get();
-		assertThat(bound.getFoo()).isEqualTo("foovalue");
-		assertThat(bound.getNested()).isNull();
-	}
-
-	public static class Example {
-
-		private String foo;
-
-		private ExampleNested nested;
-
-		public String getFoo() {
-			return this.foo;
-		}
-
-		public void setFoo(String foo) {
-			this.foo = foo;
-		}
-
-		public ExampleNested getNested() {
-			return this.nested;
-		}
-
-		public void setNested(ExampleNested nested) {
-			this.nested = nested;
-		}
-
-	}
-
-	public static class ExampleNested {
-
-		private String bar;
-
-		public String getBar() {
-			return this.bar;
-		}
-
-		public void setBar(String bar) {
-			this.bar = bar;
-		}
-
-	}
-
-}