Added TaskNameResolver and related implementation

TaskNameResolver allows the ability to customize how a task is named.
During normal use cases, the provided SimpleTaskNameResolver should
suffice.

resolves spring-cloud/spring-cloud-task#54

spring-cloud-task-core/src/test/java/org/springframework/cloud/task/repository/support/SimpleTaskExplorerTests.java

@@ -35,8 +35,6 @@ import java.util.Set;
 import java.util.TreeSet;
 import java.util.UUID;
 
-import javax.sql.DataSource;
-
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
@@ -44,6 +42,7 @@ import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
 import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
@@ -54,7 +53,6 @@ import org.springframework.cloud.task.repository.TaskExplorer;
 import org.springframework.cloud.task.repository.dao.TaskExecutionDao;
 import org.springframework.cloud.task.util.TestVerifierUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
-import org.springframework.core.io.ResourceLoader;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
@@ -67,18 +65,12 @@ public class SimpleTaskExplorerTests {
 
 	private AnnotationConfigApplicationContext context;
 
-	@Autowired(required = false)
-	private DataSource dataSource;
-
 	@Autowired
 	private TaskExecutionDao dao;
 
 	@Autowired
 	private TaskExplorer taskExplorer;
 
-	@Autowired
-	private ResourceLoader resourceLoader;
-
 	private DaoType testType;
 
 	@Parameterized.Parameters

spring-cloud-task-core/src/test/java/org/springframework/cloud/task/repository/support/SimpleTaskNameResolverTests.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 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.cloud.task.repository.support;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import org.springframework.context.support.GenericApplicationContext;
+
+/**
+ * @author Michael Minella
+ */
+public class SimpleTaskNameResolverTests {
+
+	@Test
+	public void testDefault() {
+		GenericApplicationContext context = new GenericApplicationContext();
+
+		SimpleTaskNameResolver taskNameResolver = new SimpleTaskNameResolver();
+		taskNameResolver.setApplicationContext(context);
+
+		assertTrue(taskNameResolver.getTaskName().startsWith("org.springframework.context.support.GenericApplicationContext"));
+	}
+
+	@Test
+	public void testApplicationName() {
+		GenericApplicationContext context = new GenericApplicationContext();
+		context.setId("foo");
+
+		SimpleTaskNameResolver taskNameResolver = new SimpleTaskNameResolver();
+		taskNameResolver.setApplicationContext(context);
+
+		assertEquals("foo", taskNameResolver.getTaskName());
+	}
+
+	@Test
+	public void testExternalConfig() {
+		GenericApplicationContext context = new GenericApplicationContext();
+		context.setId("foo");
+
+		SimpleTaskNameResolver taskNameResolver = new SimpleTaskNameResolver();
+		taskNameResolver.setApplicationContext(context);
+
+		taskNameResolver.setConfiguredName("bar");
+
+		assertEquals("bar", taskNameResolver.getTaskName());
+	}
+}

spring-cloud-task-core/src/test/java/org/springframework/cloud/task/util/TestDefaultConfiguration.java

@@ -16,9 +16,11 @@
 
 package org.springframework.cloud.task.util;
 
-		import org.springframework.cloud.task.listener.TaskLifecycleListener;
+import org.springframework.cloud.task.listener.TaskLifecycleListener;
+import org.springframework.cloud.task.repository.TaskNameResolver;
 import org.springframework.cloud.task.repository.TaskRepository;
 import org.springframework.cloud.task.repository.dao.MapTaskExecutionDao;
+import org.springframework.cloud.task.repository.support.SimpleTaskNameResolver;
 import org.springframework.cloud.task.repository.support.SimpleTaskRepository;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -36,8 +38,13 @@ public class TestDefaultConfiguration {
 		return new SimpleTaskRepository(new MapTaskExecutionDao());
 	}
 
+	@Bean
+	public TaskNameResolver taskNameResolver() {
+		return new SimpleTaskNameResolver();
+	}
+
 	@Bean
 	public TaskLifecycleListener taskHandler(){
-		return new TaskLifecycleListener(taskRepository());
+		return new TaskLifecycleListener(taskRepository(), taskNameResolver());
 	}
 }