Guide to use the Apacheds server annotation framework
Guide to use the Apacheds server annotation framework
Apacheds is an open source LDAP (lightweight directory access protocol) server based on Apache Directory Server.The annotation framework is a powerful tool provided by Apacheds, allowing developers to easily define and manage the LDAP data model.
This article will introduce how to use Apacheds's annotation framework to create and operate the LDAP data model, and provide some Java code examples to help understand.
1. Add Maven dependence
Add the following Maven dependencies to the pom.xml file to introduce the Apacheds annotation framework:
<dependency>
<groupId>org.apache.directory.server</groupId>
<artifactId>apacheds-all</artifactId>
<version>2.0.0-M26</version>
</dependency>
2. Create the LDAP entity class
First, create an ordinary Java class and use annotations to define it as a LDAP entity class.For example, we create a class called "Person", which contains some common properties in LDAP, such as "CN" (universal name) and "SN" (surname):
import org.apache.directory.api.ldap.model.annotation.*;
@Entry(objectClasses = {"top", "person"})
public class Person {
@Id
private Dn dn;
@Attribute(name = "cn")
private String commonName;
@Attribute(name = "sn")
private String surName;
// Getters and setters
}
In the above example,@Entry annotation is used to specify that the class is a LDAP entity class, and defines the object class of the physical class through the ObjectClasses parameter.@ID annotation is used to identify DN (difference name) of the entity class, that is, the only attribute of the entity in LDAP.
@Attribute annotation is used to specify the mapping relationship between each physical class attribute and LDAP attribute.In the above examples, the Commoname attribute is mapped to the "CN" property in LDAP, and the SURNAME attribute is mapped to the "SN" property in LDAP.
3. Connect to the Apacheds server
In the Java code, you can use the following example code to connect to the Apacheds server:
import org.apache.directory.ldap.client.api.*;
import org.apache.directory.ldap.model.name.*;
public class ApacheDsExample {
public static void main(String[] args) throws Exception {
LdapConnectionConfig config = new LdapConnectionConfig();
config.setLdapHost("localhost");
config.setLdapPort(10389);
config.setName(Dn.EMPTY_DN);
config.setCredentials("admin");
LdapConnection connection = new LdapNetworkConnection(config);
connection.bind();
// Perform LDAP operations here
connection.unBind();
connection.close();
}
}
Please modify the server host name, port number, administrator credentials and other information in the above example code according to your environmental configuration and needs.
4. Create and update LDAP entities
Using the annotation framework, you can create and update the LDAP entity through the following ways:
// Create a new Person object
Person person = new Person();
person.setCommonName("John");
person.setSurName("Doe");
// Save Person object to the server
connection.add(person);
// Update an existing Person object
person.setSurName("Smith");
// Save the updated Person object to the server
connection.update(person);
In the above example, we created a Person object and set its attributes.By calling the Connection.add (Person) method, the object can be saved on the Apacheds server.Similarly, by updating the object and calling the Connection.Update (Person) method, the physical data on the server can be updated.
5. Search and delete LDAP entities
Using Apacheds's annotation framework can easily perform search and delete operations of LDAP entities.The following is an example code:
// Search for Person entities with specified conditions
Filter filter = FilterBuilder.equal("cn", "John");
EntryCursor cursor = connection.search("dc=example,dc=com", filter);
while(cursor.next()) {
Entry entry = cursor.get();
Person person = connection.lookup(entry.getDn(), Person.class);
// Process Person physical data
}
// Delete the specified Person entity
connection.delete(person);
In the above example, we use the FilterBuilder class provided by Apacheds to build filters to specify search conditions.By calling the Connection.search () method, you can perform search operations and obtain eligible entities.
Through the Connection.Delete (Person) method, the specified entity can be deleted.
Summarize
The Apacheds server annotation framework provides a simpler and convenient way to process the LDAP data model and enables developers to more easily interact with the Apacheds server.This article provides some basic guidelines and Java code examples to help you quickly use the Apacheds annotation framework.Hope this article will help you!
