Implemented Elasticsearch usage for wildcard search functionality in …

spring-boot-elasticsearch/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.3.4</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.neo</groupId>
+	<artifactId>spring-boot-elasticsearch</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>spring-boot-elasticsearch</name>
+	<description>Demo project for Spring Boot</description>
+	<url/>
+	<licenses>
+		<license/>
+	</licenses>
+	<developers>
+		<developer/>
+	</developers>
+	<scm>
+		<connection/>
+		<developerConnection/>
+		<tag/>
+		<url/>
+	</scm>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

spring-boot-elasticsearch/src/main/java/com/neo/spring_boot_elasticsearch/SpringBootElasticsearchApplication.java

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+package com.neo.spring_boot_elasticsearch;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
+
+@SpringBootApplication
+@EnableElasticsearchRepositories
+public class SpringBootElasticsearchApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SpringBootElasticsearchApplication.class, args);
+	}
+
+}

spring-boot-elasticsearch/src/main/java/com/neo/spring_boot_elasticsearch/controller/ProductController.java

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+package com.neo.spring_boot_elasticsearch.controller;
+
+import com.neo.spring_boot_elasticsearch.models.Product;
+import com.neo.spring_boot_elasticsearch.service.ProductService;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/product")
+public class ProductController {
+
+
+    private final ProductService productService;
+
+    public ProductController(ProductService productService) {
+        this.productService = productService;
+    }
+
+    @GetMapping("/findByProductName/{name}")
+    public List<Product> findByProductName(@RequestParam String name)
+    {
+        return productService.findByProductName(name);
+
+    }
+}

spring-boot-elasticsearch/src/main/java/com/neo/spring_boot_elasticsearch/models/Product.java

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+package com.neo.spring_boot_elasticsearch.models;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.elasticsearch.annotations.Document;
+
+@Document(indexName = "products")
+public class Product {
+
+    @Id
+    private int id;
+    private String name;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

spring-boot-elasticsearch/src/main/java/com/neo/spring_boot_elasticsearch/repository/ProductRepository.java

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+package com.neo.spring_boot_elasticsearch.repository;
+
+import com.neo.spring_boot_elasticsearch.models.Product;
+import org.springframework.data.elasticsearch.annotations.Query;
+import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
+
+import java.util.List;
+
+public interface ProductRepository extends ElasticsearchRepository<Product,Integer> {
+
+    @Query("{\"wildcard\": {\"name\": \"*?0*\"}}")
+    List<Product> findByNameWildcard(String name);
+}

spring-boot-elasticsearch/src/main/java/com/neo/spring_boot_elasticsearch/service/ProductService.java

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+package com.neo.spring_boot_elasticsearch.service;
+
+import com.neo.spring_boot_elasticsearch.models.Product;
+import com.neo.spring_boot_elasticsearch.repository.ProductRepository;
+
+import java.util.List;
+
+public class ProductService {
+
+    private final ProductRepository productRepository;
+
+    public ProductService(ProductRepository productRepository) {
+        this.productRepository = productRepository;
+    }
+
+    public List<Product> findByProductName(String name)
+    {
+        return productRepository.findByNameWildcard(name);
+    }
+}

spring-boot-elasticsearch/src/main/resources/application.properties

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+spring.application.name=spring-boot-elasticsearch

spring-boot-elasticsearch/src/test/java/com/neo/spring_boot_elasticsearch/SpringBootElasticsearchApplicationTests.java

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+package com.neo.spring_boot_elasticsearch;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class SpringBootElasticsearchApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}