Monday, 6 December 2021

Spring Data: ArangoTemplate: Replace a document

ArangoTemplate interface provides ‘replace’ method to replace a document.

 

Signature

<T> DocumentEntity replace(Object id, T value, DocumentReplaceOptions options) throws DataAccessException;
<T> DocumentEntity replace(Object id, T value) throws DataAccessException;

 

Replaces the document with id with the one in the body, provided there is such a document and no precondition is violated.

 

DocumentReplaceOptions’  is used to provide additional options while replacing the document. Below table summarizes possible options while replacing the document.

 

Option

Data type

Description

waitForSync

Boolean

Wait until document has been synced to disk.

ignoreRevs

Boolean

By default, or if this is set to true, the _rev attributes in the given document is ignored. If this is set to false, then the _rev attribute given in the body document is taken as a precondition. The document is only replaced if the current revision is the one specified.

ifMatch

String

Replace a document based on target revision

returnNew

Boolean

Return additionally the complete new document under the attribute new in the result.

returnOld

Boolean

Return additionally the complete previous revision of the changed document under the attribute old in the result.

silent

Boolean

If set to true, an empty object will be returned as response. No meta-data will be returned for the created document. This option can be used to save some network traffic.

streamTransactionId

String

If set, the operation will be executed within the transaction.

 

Example

 

DocumentReplaceOptions docReplaceOptions = new DocumentReplaceOptions();
docReplaceOptions.returnNew(true);
docReplaceOptions.returnOld(true);

DocumentUpdateEntity updatedDoc = (DocumentUpdateEntity) arangoTemplate.replace(documentCreateEntity1.getId(),emp1ToReplace, docReplaceOptions);

 

Find the below working application.

 

Step 1: Create new maven project ‘arango-template-replace-document’.

 

Step 2: Update pom.xml with maven dependencies.

 

pom.xml

<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.sample.app</groupId>
    <artifactId>arango-template-replace-document</artifactId>
    <version>1</version>

    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-parent -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
    </parent>


    <dependencies>
        <dependency>
            <groupId>com.arangodb</groupId>
            <artifactId>arangodb-spring-boot-starter</artifactId>
            <version>2.3.3.RELEASE</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

 

Step 3: Define entity class.

 

Employee.java

package com.sample.app.entity;

import com.arangodb.springframework.annotation.ArangoId;
import com.arangodb.springframework.annotation.Document;
import org.springframework.data.annotation.Id;

@Document("employees")
public class Employee {

    @Id // db document field: _key
    private String key;

    @ArangoId // db document field: _id
    private String arangoId;

    private Integer id;
    private String firstName;
    private String lastName;
    private Integer age;

    public Employee(Integer id, String firstName, String lastName) {
        super();
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
    }

    public Employee() {
        
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public String getArangoId() {
        return arangoId;
    }

    public void setArangoId(String arangoId) {
        this.arangoId = arangoId;
    }

    public Integer getId() {
        return id;
    }

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

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Employee [key=" + key + ", arangoId=" + arangoId + ", id=" + id + ", firstName=" + firstName
                + ", lastName=" + lastName + ", age=" + age + "]";
    }

}

Step 4: Define Arango DB configuration class.

 

ArangoConfig.java

package com.sample.app.config;

import org.springframework.context.annotation.Configuration;

import com.arangodb.ArangoDB;
import com.arangodb.springframework.annotation.EnableArangoRepositories;
import com.arangodb.springframework.config.ArangoConfiguration;

@Configuration
@EnableArangoRepositories(basePackages = { "com.sample.app" })
public class ArangoConfig implements ArangoConfiguration {

    @Override
    public ArangoDB.Builder arango() {
        return new ArangoDB.Builder().host("localhost", 8529).user("root").password("tiger");
    }

    @Override
    public String database() {
        return "abc_org";
    }
}

Step 5: Define main application class.

 

App.java

package com.sample.app;

import java.util.Arrays;
import java.util.Collection;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;

import com.arangodb.entity.DocumentCreateEntity;
import com.arangodb.entity.DocumentUpdateEntity;
import com.arangodb.entity.MultiDocumentEntity;
import com.arangodb.model.DocumentCreateOptions;
import com.arangodb.model.DocumentReplaceOptions;
import com.arangodb.model.DocumentUpdateOptions;
import com.arangodb.springframework.core.ArangoOperations;
import com.sample.app.entity.Employee;

@SpringBootApplication
public class App {

    @Autowired
    private ArangoOperations arangoTemplate;

    public static void main(String args[]) {
        SpringApplication.run(App.class, args);
    }

    private static void print(DocumentCreateEntity documentCreateEntity) {
        System.out.println("\nid : " + documentCreateEntity.getId());
        System.out.println("key : " + documentCreateEntity.getKey());
        System.out.println("revision : " + documentCreateEntity.getRev());
        System.out.println("doc : " + documentCreateEntity.getNew());
    }

    @Bean
    public CommandLineRunner demo() {

        return (args) -> {
            Employee emp1 = new Employee(1, "Shanmukha Rao", "Kummari");

            DocumentCreateOptions docCreateOptions = new DocumentCreateOptions();
            docCreateOptions.returnNew(true);

            DocumentCreateEntity documentCreateEntity1 = (DocumentCreateEntity) arangoTemplate.insert(emp1,
                    docCreateOptions);

            print(documentCreateEntity1);

            Employee emp1ToReplace = new Employee();
            emp1ToReplace.setKey(documentCreateEntity1.getKey());
            emp1ToReplace.setFirstName("Shanmukha Rao Kummari");
            emp1ToReplace.setAge(35);

            DocumentReplaceOptions docReplaceOptions = new DocumentReplaceOptions();
            docReplaceOptions.returnNew(true);
            docReplaceOptions.returnOld(true);

            DocumentUpdateEntity updatedDoc = (DocumentUpdateEntity) arangoTemplate.replace(documentCreateEntity1.getId(),
                    emp1ToReplace, docReplaceOptions);

            System.out.println("\nUpdated document");
            System.out.println("\nid : " + updatedDoc.getId());
            System.out.println("key : " + updatedDoc.getKey());
            System.out.println("revision : " + updatedDoc.getRev());
            System.out.println("newDoc : " + updatedDoc.getNew());
            System.out.println("oldDoc : " + updatedDoc.getOld());

        };
    }
}

Total project structure looks like below.



Run App.java, you will see below messages in console.

id : employees/37258
key : 37258
revision : _cUlk8nK---
doc : {"_key":"37258","_id":"employees\/37258","_rev":"_cUlk8nK---","id":1,"firstName":"Shanmukha Rao","lastName":"Kummari","_class":"com.sample.app.entity.Employee"}

Updated document

id : employees/37258
key : 37258
revision : _cUlk8p----
newDoc : {"_key":"37258","_id":"employees\/37258","_rev":"_cUlk8p----","firstName":"Shanmukha Rao Kummari","age":35,"_class":"com.sample.app.entity.Employee"}
oldDoc : {"_key":"37258","_id":"employ

You can download complete working application from below link.

https://github.com/harikrishna553/springboot/tree/master/arangodb/arango-template-replace-document


 
 

 


 


 

  

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