Delete Entity with CrudRepository Interface in Spring Data MongoDB

Create a database with the name is SpringDataMongoDBRepository. This database have a collection: Product collection.

/* Create SpringDataMongoDBRepository database */
use SpringDataMongoDBRepository

/* Create Product collection */
db.createCollection('product');

/* Dumping data for `product` collection */
db.getCollection('product').insert({
	"name" : "Mobile 1",
    "price" : 45.0,
    "quantity" : 4.0,
    "status" : true,
    "date" : ISODate("2016-10-20T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa45711668"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 1"
    },
    "colors" : [
        "red",
        "green",
        "blue"
    ]
});

db.getCollection('product').insert({
	"name" : "Mobile 2",
    "price" : 12.0,
    "quantity" : 7.0,
    "status" : true,
    "date" : ISODate("2017-11-14T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa45711668"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 2"
    },
    "colors" : [
        "yellow",
        "green"
    ]
});

db.getCollection('product').insert({
	"name" : "Mobile 3",
    "price" : 28.0,
    "quantity" : 8.0,
    "status" : true,
    "date" : ISODate("2017-11-20T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa45711668"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 3"
    },
    "colors" : [
        "black",
        "blue"
    ]
});

db.getCollection('product').insert({
	"name" : "Laptop 1",
    "price" : 39.0,
    "quantity" : 12.0,
    "status" : false,
    "date" : ISODate("2017-12-26T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa45711669"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 1"
    },
    "colors" : [
        "blue"
    ]
});

db.getCollection('product').insert({
	"name" : "Laptop 2",
    "price" : 86.0,
    "quantity" : 23.0,
    "status" : true,
    "date" : ISODate("2017-03-11T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa45711669"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 1"
    },
    "colors" : [
        "blue",
        "yellow"
    ]
});

db.getCollection('product').insert({
	"name" : "Tivi 1",
    "price" : 22.0,
    "quantity" : 7.0,
    "status" : true,
    "date" : ISODate("2017-06-26T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa4571166a"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 1"
    },
    "colors" : [
        "blue",
        "white",
        "black"
    ]
});

db.getCollection('product').insert({
	"name" : "Tivi 2",
    "price" : 86.0,
    "quantity" : 23.0,
    "status" : false,
    "date" : ISODate("2017-09-24T00:00:00.000Z"),
    "categoryId" : ObjectId("5a30de130867edfa4571166a"),
    "brand" : {
        "_id" : new ObjectId(),
        "name" : "brand 3"
    },
    "colors" : [
        "red",
        "green"
    ]
});




Copy JAR files which are listed below:

antlr-2.7.7.jar
aopalliance-1.0.jar
aspectjrt-1.8.9.jar
aspectjweaver-1.8.9.jar
cglib-2.2.2.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
com.springsource.org.apache.log4j-1.2.15.jar
commons-dbcp2-2.1.1.jar
commons-logging-1.1.3.jar
commons-pool2-2.4.2.jar
dom4j-1.6.1.jar
hibernate-commons-annotations-4.0.2.Final.jar
hibernate-core-4.2.5.Final.jar
hibernate-jpa-2.0-api-1.0.1.Final.jar
javassist-3.15.0-GA.jar
jboss-logging-3.1.0.GA.jar
jboss-transaction-api_1.1_spec-1.0.1.Final.jar
jcl-over-slf4j-1.7.1.jar
jmxtools-1.2.1.jar
mongo-java-driver-3.6.0.jar
slf4j-api-1.7.1.jar
slf4j-simple-1.7.25.jar
spring-aop-4.2.0.RELEASE.jar
spring-aspects-4.3.3.RELEASE.jar
spring-beans-4.2.0.RELEASE.jar
spring-context-4.2.0.RELEASE.jar
spring-core-4.2.0.RELEASE.jar
spring-data-commons-1.12.5.RELEASE.jar
spring-data-mongodb-1.9.5.RELEASE.jar
spring-expression-4.2.0.RELEASE.jar
spring-jdbc-4.2.0.RELEASE.jar
spring-jms-4.2.0.RELEASE.jar
spring-jmx-2.0.8.jar
spring-orm-4.2.0.RELEASE.jar
spring-oxm-4.2.0.RELEASE.jar
spring-tx-4.2.0.RELEASE.jar

Create entities classes: Product.java and Brand.java, to represent the above table

Brand.java

package demo.entities;

public class Brand {

	private String id;
	private String name;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Brand(String id, String name) {
		this.id = id;
		this.name = name;
	}

	public Brand() {
	}

}

Product.java

package demo.entities;

import java.util.Date;
import java.util.List;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

@Document(collection = "product")
public class Product {

	@Id
	private String id;
	private String name;
	private double price;
	private int quantity;
	private boolean status;
	private Date date;
	private String categoryId;
	private Brand brand;
	private List<String> colors;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public double getPrice() {
		return price;
	}

	public void setPrice(double price) {
		this.price = price;
	}

	public int getQuantity() {
		return quantity;
	}

	public void setQuantity(int quantity) {
		this.quantity = quantity;
	}

	public boolean isStatus() {
		return status;
	}

	public void setStatus(boolean status) {
		this.status = status;
	}

	public Date getDate() {
		return date;
	}

	public void setDate(Date date) {
		this.date = date;
	}

	public String getCategoryId() {
		return categoryId;
	}

	public void setCategoryId(String categoryId) {
		this.categoryId = categoryId;
	}

	public Brand getBrand() {
		return brand;
	}

	public void setBrand(Brand brand) {
		this.brand = brand;
	}

	public List<String> getColors() {
		return colors;
	}

	public void setColors(List<String> colors) {
		this.colors = colors;
	}

}




Spring Data MongoDB Configuration File

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mongo="http://www.springframework.org/schema/data/mongo"
	xsi:schemaLocation="http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context-3.0.xsd
          http://www.springframework.org/schema/data/mongo
          http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

	<context:component-scan base-package="demo.*" />

	<mongo:mongo id="mongo" host="localhost" port="27017" />

	<mongo:db-factory id="mongoDbFactory" dbname="SpringDataMongoDBRepository"
		mongo-ref="mongo" />

	<bean id="mappingContext"
		class="org.springframework.data.mongodb.core.mapping.MongoMappingContext" />

	<bean id="defaultMongoTypeMapper"
		class="org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper">
		<constructor-arg name="typeKey">
			<null />
		</constructor-arg>
	</bean>

	<bean id="mappingMongoConverter"
		class="org.springframework.data.mongodb.core.convert.MappingMongoConverter">
		<constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
		<constructor-arg name="mappingContext" ref="mappingContext" />
		<property name="typeMapper" ref="defaultMongoTypeMapper" />
	</bean>

	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
		<constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
		<constructor-arg name="mongoConverter" ref="mappingMongoConverter" />
	</bean>

	<mongo:repositories base-package="demo.repositories"></mongo:repositories>

</beans>

The ProductRepository interface extends from CrudRepository interface of Spring Data MongoDB that provides CRUD operations for an entity.

package demo.repositories;

import org.springframework.stereotype.Repository;
import org.springframework.data.repository.CrudRepository;
import demo.entities.Product;

@Repository("productRepository")
public interface ProductRepository extends CrudRepository<Product, String> {

}




package demo.main;

import org.springframework.context.support.ClassPathXmlApplicationContext;
import demo.repositories.ProductRepository;

public class Main {

	public static void main(String[] args) {

		try {

			ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(
					"applicationContext.xml");
			ProductRepository productRepository = (ProductRepository) applicationContext.getBean("productRepository");

			System.out.println("Delete product with Id is 5a586b2cf409b21b84030393");
			productRepository.delete("5a586b2cf409b21b84030393");
			System.out.println("Done");

			applicationContext.close();
		} catch (Exception e) {
			System.err.println(e.getMessage());
		}

	}

}
Delete product with Id is 5a586b2cf409b21b84030393
Done