Added PathEditor for NIO file system resolution

Issue: SPR-14436

spring-beans/src/main/java/org/springframework/beans/PropertyEditorRegistrySupport.java

@@ -25,6 +25,7 @@ import java.math.BigInteger;
 import java.net.URI;
 import java.net.URL;
 import java.nio.charset.Charset;
+import java.nio.file.Path;
 import java.util.Collection;
 import java.util.Currency;
 import java.util.HashMap;
@@ -59,6 +60,7 @@ import org.springframework.beans.propertyeditors.FileEditor;
 import org.springframework.beans.propertyeditors.InputSourceEditor;
 import org.springframework.beans.propertyeditors.InputStreamEditor;
 import org.springframework.beans.propertyeditors.LocaleEditor;
+import org.springframework.beans.propertyeditors.PathEditor;
 import org.springframework.beans.propertyeditors.PatternEditor;
 import org.springframework.beans.propertyeditors.PropertiesEditor;
 import org.springframework.beans.propertyeditors.ReaderEditor;
@@ -211,6 +213,7 @@ public class PropertyEditorRegistrySupport implements PropertyEditorRegistry {
 		this.defaultEditors.put(InputStream.class, new InputStreamEditor());
 		this.defaultEditors.put(InputSource.class, new InputSourceEditor());
 		this.defaultEditors.put(Locale.class, new LocaleEditor());
+		this.defaultEditors.put(Path.class, new PathEditor());
 		this.defaultEditors.put(Pattern.class, new PatternEditor());
 		this.defaultEditors.put(Properties.class, new PropertiesEditor());
 		this.defaultEditors.put(Reader.class, new ReaderEditor());

spring-beans/src/main/java/org/springframework/beans/propertyeditors/FileEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * 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.
@@ -59,16 +59,14 @@ public class FileEditor extends PropertyEditorSupport {
 
 
 	/**
-	 * Create a new FileEditor,
-	 * using the default ResourceEditor underneath.
+	 * Create a new FileEditor, using a default ResourceEditor underneath.
 	 */
 	public FileEditor() {
 		this.resourceEditor = new ResourceEditor();
 	}
 
 	/**
-	 * Create a new FileEditor,
-	 * using the given ResourceEditor underneath.
+	 * Create a new FileEditor, using the given ResourceEditor underneath.
 	 * @param resourceEditor the ResourceEditor to use
 	 */
 	public FileEditor(ResourceEditor resourceEditor) {
@@ -105,7 +103,7 @@ public class FileEditor extends PropertyEditorSupport {
 			}
 			catch (IOException ex) {
 				throw new IllegalArgumentException(
-						"Could not retrieve File for " + resource + ": " + ex.getMessage());
+						"Could not retrieve file for " + resource + ": " + ex.getMessage());
 			}
 		}
 		else {

spring-beans/src/main/java/org/springframework/beans/propertyeditors/InputStreamEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * 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.
@@ -47,16 +47,14 @@ public class InputStreamEditor extends PropertyEditorSupport {
 
 
 	/**
-	 * Create a new InputStreamEditor,
-	 * using the default ResourceEditor underneath.
+	 * Create a new InputStreamEditor, using the default ResourceEditor underneath.
 	 */
 	public InputStreamEditor() {
 		this.resourceEditor = new ResourceEditor();
 	}
 
 	/**
-	 * Create a new InputStreamEditor,
-	 * using the given ResourceEditor underneath.
+	 * Create a new InputStreamEditor, using the given ResourceEditor underneath.
 	 * @param resourceEditor the ResourceEditor to use
 	 */
 	public InputStreamEditor(ResourceEditor resourceEditor) {

spring-beans/src/main/java/org/springframework/beans/propertyeditors/PathEditor.java

@@ -0,0 +1,114 @@
+/*
+ * 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.beans.propertyeditors;
+
+import java.beans.PropertyEditorSupport;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.FileSystemNotFoundException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceEditor;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.util.Assert;
+
+/**
+ * Editor for {@code java.nio.file.Path}, to directly populate a Path
+ * property instead of using a String property as bridge.
+ *
+ * <p>Based on {@link Paths#get(URI)}'s resolution algorithm, checking
+ * registered NIO file system providers, including the default file system
+ * for "file:..." paths. Also supports Spring-style URL notation: any fully
+ * qualified standard URL and Spring's special "classpath:" pseudo-URL,
+ * as well as Spring's context-specific relative file paths.
+ *
+ * <p>Note that, in contrast to {@link FileEditor}, relative paths are only
+ * supported by Spring's resource abstraction here. Direct {@code Paths.get}
+ * resolution in a file system always has to go through the corresponding
+ * file system provider's scheme, i.e. "file" for the default file system.
+ *
+ * @author Juergen Hoeller
+ * @since 4.3.2
+ * @see java.nio.file.Path
+ * @see Paths#get(URI)
+ * @see ResourceEditor
+ * @see org.springframework.core.io.ResourceLoader
+ * @see FileEditor
+ * @see URLEditor
+ */
+public class PathEditor extends PropertyEditorSupport {
+
+	private final ResourceEditor resourceEditor;
+
+
+	/**
+	 * Create a new PathEditor, using the default ResourceEditor underneath.
+	 */
+	public PathEditor() {
+		this.resourceEditor = new ResourceEditor();
+	}
+
+	/**
+	 * Create a new PathEditor, using the given ResourceEditor underneath.
+	 * @param resourceEditor the ResourceEditor to use
+	 */
+	public PathEditor(ResourceEditor resourceEditor) {
+		Assert.notNull(resourceEditor, "ResourceEditor must not be null");
+		this.resourceEditor = resourceEditor;
+	}
+
+
+	@Override
+	public void setAsText(String text) throws IllegalArgumentException {
+		if (!text.startsWith("/") && !text.startsWith(ResourceLoader.CLASSPATH_URL_PREFIX)) {
+			try {
+				URI uri = new URI(text);
+				if (uri.getScheme() != null) {
+					// Let's try NIO file system providers via Paths.get(URI)
+					setValue(Paths.get(uri).normalize());
+					return;
+				}
+			}
+			catch (URISyntaxException ex) {
+				// Not a valid URI: Let's try as Spring resource location.
+			}
+			catch (FileSystemNotFoundException ex) {
+				// URI scheme not registered for NIO:
+				// Let's try URL protocol handlers via Spring's resource mechanism.
+			}
+		}
+
+		this.resourceEditor.setAsText(text);
+		Resource resource = (Resource) this.resourceEditor.getValue();
+		try {
+			setValue(resource != null ? resource.getFile().toPath() : null);
+		}
+		catch (IOException ex) {
+			throw new IllegalArgumentException("Failed to retrieve file for " + resource, ex);
+		}
+	}
+
+	@Override
+	public String getAsText() {
+		Path value = (Path) getValue();
+		return (value != null ? value.toString() : "");
+	}
+
+}

spring-beans/src/main/java/org/springframework/beans/propertyeditors/ReaderEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * 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.
@@ -47,16 +47,14 @@ public class ReaderEditor extends PropertyEditorSupport {
 
 
 	/**
-	 * Create a new ReaderEditor,
-	 * using the default ResourceEditor underneath.
+	 * Create a new ReaderEditor, using the default ResourceEditor underneath.
 	 */
 	public ReaderEditor() {
 		this.resourceEditor = new ResourceEditor();
 	}
 
 	/**
-	 * Create a new ReaderEditor,
-	 * using the given ResourceEditor underneath.
+	 * Create a new ReaderEditor, using the given ResourceEditor underneath.
 	 * @param resourceEditor the ResourceEditor to use
 	 */
 	public ReaderEditor(ResourceEditor resourceEditor) {

spring-beans/src/main/java/org/springframework/beans/propertyeditors/URIEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * 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.
@@ -60,8 +60,7 @@ public class URIEditor extends PropertyEditorSupport {
 	 * standard URIs (not trying to resolve them into physical resources).
 	 */
 	public URIEditor() {
-		this.classLoader = null;
-		this.encode = true;
+		this(true);
 	}
 
 	/**
@@ -74,7 +73,6 @@ public class URIEditor extends PropertyEditorSupport {
 		this.encode = encode;
 	}
 
-
 	/**
 	 * Create a new URIEditor, using the given ClassLoader to resolve
 	 * "classpath:" locations into physical resource URLs.
@@ -82,8 +80,7 @@ public class URIEditor extends PropertyEditorSupport {
 	 * (may be {@code null} to indicate the default ClassLoader)
 	 */
 	public URIEditor(ClassLoader classLoader) {
-		this.classLoader = (classLoader != null ? classLoader : ClassUtils.getDefaultClassLoader());
-		this.encode = true;
+		this(classLoader, true);
 	}
 
 	/**

spring-beans/src/main/java/org/springframework/beans/propertyeditors/URLEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * 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.
@@ -50,7 +50,7 @@ public class URLEditor extends PropertyEditorSupport {
 
 
 	/**
-	 * Create a new URLEditor, using the default ResourceEditor underneath.
+	 * Create a new URLEditor, using a default ResourceEditor underneath.
 	 */
 	public URLEditor() {
 		this.resourceEditor = new ResourceEditor();

spring-beans/src/main/java/org/springframework/beans/support/ResourceEditorRegistrar.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * 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.
@@ -22,6 +22,7 @@ import java.io.InputStream;
 import java.io.Reader;
 import java.net.URI;
 import java.net.URL;
+import java.nio.file.Path;
 
 import org.xml.sax.InputSource;
 
@@ -33,6 +34,7 @@ import org.springframework.beans.propertyeditors.ClassEditor;
 import org.springframework.beans.propertyeditors.FileEditor;
 import org.springframework.beans.propertyeditors.InputSourceEditor;
 import org.springframework.beans.propertyeditors.InputStreamEditor;
+import org.springframework.beans.propertyeditors.PathEditor;
 import org.springframework.beans.propertyeditors.ReaderEditor;
 import org.springframework.beans.propertyeditors.URIEditor;
 import org.springframework.beans.propertyeditors.URLEditor;
@@ -103,6 +105,7 @@ public class ResourceEditorRegistrar implements PropertyEditorRegistrar {
 		doRegisterEditor(registry, InputStream.class, new InputStreamEditor(baseEditor));
 		doRegisterEditor(registry, InputSource.class, new InputSourceEditor(baseEditor));
 		doRegisterEditor(registry, File.class, new FileEditor(baseEditor));
+		doRegisterEditor(registry, Path.class, new PathEditor(baseEditor));
 		doRegisterEditor(registry, Reader.class, new ReaderEditor(baseEditor));
 		doRegisterEditor(registry, URL.class, new URLEditor(baseEditor));
 

spring-beans/src/test/java/org/springframework/beans/propertyeditors/FileEditorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2008 the original author or authors.
+ * 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.
@@ -29,20 +29,20 @@ import static org.junit.Assert.*;
  * @author Thomas Risberg
  * @author Chris Beams
  */
-public final class FileEditorTests {
+public class FileEditorTests {
 
 	@Test
 	public void testClasspathFileName() throws Exception {
 		PropertyEditor fileEditor = new FileEditor();
-		fileEditor.setAsText("classpath:" + ClassUtils.classPackageAsResourcePath(getClass()) + "/"
-				+ ClassUtils.getShortName(getClass()) + ".class");
+		fileEditor.setAsText("classpath:" + ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
+				ClassUtils.getShortName(getClass()) + ".class");
 		Object value = fileEditor.getValue();
 		assertTrue(value instanceof File);
 		File file = (File) value;
 		assertTrue(file.exists());
 	}
 
-	@Test(expected=IllegalArgumentException.class)
+	@Test(expected = IllegalArgumentException.class)
 	public void testWithNonExistentResource() throws Exception {
 		PropertyEditor propertyEditor = new FileEditor();
 		propertyEditor.setAsText("classpath:no_way_this_file_is_found.doc");
@@ -71,8 +71,8 @@ public final class FileEditorTests {
 	@Test
 	public void testUnqualifiedFileNameFound() throws Exception {
 		PropertyEditor fileEditor = new FileEditor();
-		String fileName = ClassUtils.classPackageAsResourcePath(getClass()) + "/" + ClassUtils.getShortName(getClass())
-				+ ".class";
+		String fileName = ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
+				ClassUtils.getShortName(getClass()) + ".class";
 		fileEditor.setAsText(fileName);
 		Object value = fileEditor.getValue();
 		assertTrue(value instanceof File);
@@ -88,8 +88,8 @@ public final class FileEditorTests {
 	@Test
 	public void testUnqualifiedFileNameNotFound() throws Exception {
 		PropertyEditor fileEditor = new FileEditor();
-		String fileName = ClassUtils.classPackageAsResourcePath(getClass()) + "/" + ClassUtils.getShortName(getClass())
-				+ ".clazz";
+		String fileName = ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
+				ClassUtils.getShortName(getClass()) + ".clazz";
 		fileEditor.setAsText(fileName);
 		Object value = fileEditor.getValue();
 		assertTrue(value instanceof File);
@@ -101,4 +101,5 @@ public final class FileEditorTests {
 		}
 		assertTrue(absolutePath.endsWith(fileName));
 	}
+
 }

spring-beans/src/test/java/org/springframework/beans/propertyeditors/InputStreamEditorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * 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.
@@ -60,9 +60,8 @@ public class InputStreamEditorTests {
 
 	@Test(expected = IllegalArgumentException.class)
 	public void testWhenResourceDoesNotExist() throws Exception {
-		String resource = "classpath:bingo!";
 		InputStreamEditor editor = new InputStreamEditor();
-		editor.setAsText(resource);
+		editor.setAsText("classpath:bingo!");
 	}
 
 	@Test

spring-beans/src/test/java/org/springframework/beans/propertyeditors/PathEditorTests.java

@@ -0,0 +1,80 @@
+/*
+ * 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.beans.propertyeditors;
+
+import java.beans.PropertyEditor;
+import java.io.File;
+import java.nio.file.Path;
+
+import org.junit.Test;
+
+import org.springframework.util.ClassUtils;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Juergen Hoeller
+ * @since 4.3.2
+ */
+public class PathEditorTests {
+
+	@Test
+	public void testClasspathPathName() throws Exception {
+		PropertyEditor pathEditor = new PathEditor();
+		pathEditor.setAsText("classpath:" + ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
+				ClassUtils.getShortName(getClass()) + ".class");
+		Object value = pathEditor.getValue();
+		assertTrue(value instanceof Path);
+		Path path = (Path) value;
+		assertTrue(path.toFile().exists());
+	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void testWithNonExistentResource() throws Exception {
+		PropertyEditor propertyEditor = new PathEditor();
+		propertyEditor.setAsText("classpath:/no_way_this_file_is_found.doc");
+	}
+
+	@Test
+	public void testWithNonExistentPath() throws Exception {
+		PropertyEditor pathEditor = new PathEditor();
+		pathEditor.setAsText("file:/no_way_this_file_is_found.doc");
+		Object value = pathEditor.getValue();
+		assertTrue(value instanceof Path);
+		Path path = (Path) value;
+		assertTrue(!path.toFile().exists());
+	}
+
+	@Test
+	public void testUnqualifiedPathNameFound() throws Exception {
+		PropertyEditor pathEditor = new PathEditor();
+		String fileName = ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
+				ClassUtils.getShortName(getClass()) + ".class";
+		pathEditor.setAsText(fileName);
+		Object value = pathEditor.getValue();
+		assertTrue(value instanceof Path);
+		Path path = (Path) value;
+		File file = path.toFile();
+		assertTrue(file.exists());
+		String absolutePath = file.getAbsolutePath();
+		if (File.separatorChar == '\\') {
+			absolutePath = absolutePath.replace('\\', '/');
+		}
+		assertTrue(absolutePath.endsWith(fileName));
+	}
+
+}

spring-beans/src/test/java/org/springframework/beans/propertyeditors/ReaderEditorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * 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.
@@ -34,7 +34,7 @@ public class ReaderEditorTests {
 
 	@Test(expected = IllegalArgumentException.class)
 	public void testCtorWithNullResourceEditor() throws Exception {
-		new InputStreamEditor(null);
+		new ReaderEditor(null);
 	}
 
 	@Test

spring-beans/src/test/java/org/springframework/beans/propertyeditors/URIEditorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 the original author or authors.
+ * 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.
@@ -31,15 +31,6 @@ import static org.junit.Assert.*;
  */
 public class URIEditorTests {
 
-	private void doTestURI(String uriSpec) {
-		PropertyEditor uriEditor = new URIEditor();
-		uriEditor.setAsText(uriSpec);
-		Object value = uriEditor.getValue();
-		assertTrue(value instanceof URI);
-		URI uri = (URI) value;
-		assertEquals(uriSpec, uri.toString());
-	}
-
 	@Test
 	public void standardURI() throws Exception {
 		doTestURI("mailto:juergen.hoeller@interface21.com");
@@ -141,4 +132,14 @@ public class URIEditorTests {
 		assertEquals("http://example.com/spaces%20and%20%E2%82%AC", uri.toASCIIString());
 	}
 
+
+	private void doTestURI(String uriSpec) {
+		PropertyEditor uriEditor = new URIEditor();
+		uriEditor.setAsText(uriSpec);
+		Object value = uriEditor.getValue();
+		assertTrue(value instanceof URI);
+		URI uri = (URI) value;
+		assertEquals(uriSpec, uri.toString());
+	}
+
 }

spring-beans/src/test/java/org/springframework/beans/propertyeditors/URLEditorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2006 the original author or authors.
+ * 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.
@@ -29,7 +29,12 @@ import static org.junit.Assert.*;
  * @author Rick Evans
  * @author Chris Beams
  */
-public final class URLEditorTests {
+public class URLEditorTests {
+
+	@Test(expected = IllegalArgumentException.class)
+	public void testCtorWithNullResourceEditor() throws Exception {
+		new URLEditor(null);
+	}
 
 	@Test
 	public void testStandardURI() throws Exception {
@@ -63,7 +68,7 @@ public final class URLEditorTests {
 		assertTrue(!url.getProtocol().startsWith("classpath"));
 	}
 
-	@Test(expected=IllegalArgumentException.class)
+	@Test(expected = IllegalArgumentException.class)
 	public void testWithNonExistentResource() throws Exception {
 		PropertyEditor urlEditor = new URLEditor();
 		urlEditor.setAsText("gonna:/freak/in/the/morning/freak/in/the.evening");
@@ -83,9 +88,4 @@ public final class URLEditorTests {
 		assertEquals("", urlEditor.getAsText());
 	}
 
-	@Test(expected=IllegalArgumentException.class)
-	public void testCtorWithNullResourceEditor() throws Exception {
-		new URLEditor(null);
-	}
-
 }