Prune dependencies and rename samples

spring-cloud-function-samples/function-sample/src/main/java/com/example/SampleApplication.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright 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 com.example;
+
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.function.compiler.FunctionCompiler;
+import org.springframework.cloud.function.compiler.proxy.LambdaCompilingFunction;
+import org.springframework.cloud.function.context.FunctionScan;
+import org.springframework.context.annotation.Bean;
+import org.springframework.core.io.ByteArrayResource;
+
+import reactor.core.publisher.Flux;
+
+@FunctionScan
+@SpringBootApplication
+public class SampleApplication {
+
+	@Bean
+	public Function<String, String> uppercase() {
+		return value -> value.toUpperCase();
+	}
+
+	@Bean
+	public Function<Flux<String>, Flux<String>> lowercase() {
+		return flux -> flux.map(value -> value.toLowerCase());
+	}
+
+	@Bean
+	public Supplier<String> hello() {
+		return () -> "hello";
+	}
+
+	@Bean
+	public Supplier<Flux<String>> words() {
+		return () -> Flux.fromArray(new String[] { "foo", "bar" });
+	}
+
+	@Bean
+	public Function<String, String> compiledUppercase(FunctionCompiler<String, String> compiler) {
+		String lambda = "s -> s.toUpperCase()";
+		LambdaCompilingFunction<String, String> function = new LambdaCompilingFunction<>(new ByteArrayResource(lambda.getBytes()), compiler);
+		function.setTypeParameterizations("String", "String");
+		return function;
+	}
+
+	@Bean
+	public Function<Flux<String>, Flux<String>> compiledLowercase(FunctionCompiler<Flux<String>, Flux<String>> compiler) {
+		String lambda = "f->f.map(o->o.toString().toLowerCase())";
+		return new LambdaCompilingFunction<>(new ByteArrayResource(lambda.getBytes()), compiler);
+	}
+
+	@Bean
+	public <T, R> FunctionCompiler<T, R> compiler() {
+		return new FunctionCompiler<>();
+	}
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleApplication.class, args);
+	}
+}