Arangodb官网:https://www.arangodb.com/
GitHub开源代码:https://github.com/arangodb/arangodb-java-driver
Maven依赖配置:
<dependencies> <dependency> <groupId>com.arangodb</groupId> <artifactId>arangodb-java-driver</artifactId> <version>4.2.2</version> </dependency> </dependencies>
ArangoDB arangoDB = new ArangoDB.Builder() .host("127.0.0.1", 8529) .user("myuser") .password("mypassword") .useProtocol(Protocol.VST) .build();
创建数据库:
arangoDB.createDatabase("myDatabase");
删除数据库:
arangoDB.db("myDatabase").drop();
创建集合:
arangoDB.db("myDatabase").createCollection("myCollection", null);
清空集合数据:
arangoDB.db("myDatabase").collection("myCollection").truncate();
删除集合:
arangoDB.db("myDatabase").collection("myCollection").drop();
支持三种类型的数据作为Arangodb中的文档: Java POJO、VelocyPack、Json字符串,下面以Java POJO为例
定义文档Java POJO对象:
public class User { private String _key; private String name; private int age; public User(String name, int age) { this.name = name; this.age = age; } public User() { } /* * + getter and setter */ }
插入单条文档:
User user = new User("zhangsan", 20); user.set_key("001"); arangoDB.db("myDatabase").collection("myCollection").insertDocument(user);注:也可以不设置_key值,则系统会自动生成一个key
批量插入文档:
Collection<User> documents = new ArrayList<User>(); User user1 = new User("zhangSan", 20); User user2 = new User("liSi", 21); User user3 = new User("wangWu", 22); documents.add(user1); documents.add(user2); documents.add(user3); arangoDB.db("myDatabase").collection("myCollection").insertDocuments(documents);
修改文档:
User user = new User("zhangsan1", 201); user.set_key("001"); arangoDB.db("myDatabase").collection("myCollection").updateDocument(user.get_key(),user);
修改和替换的区别:
修改:只会修改提供的字段,替换:会将提供的字段替换原有的整个文档,假设原有文档内容为:
{ "age": 20, "name": "zhangsan" }
修改:
arangoDB.db("myDatabase").collection("myCollection").updateDocument(user.get_key(),"{\"weight\":130}");
结果新增了一个字段:
{ "age": 20, "name": "zhangsan", "weight": 130 }
替换:
arangoDB.db("myDatabase").collection("myCollection").replaceDocument(user.get_key(),"{\"weight\":130}");结果原有文档中的所有内容被替换成一个字段:
{ "weight": 130 }
删除文档:
arangoDB.db("myDatabase").collection("myCollection").deleteDocument(user.get_key());
文档读取:
读取成json字符串:
String json = arangoDB.db("myDatabase").collection("myCollection").getDocument("001", String.class);读取成Java POJO对象:
User user = arangoDB.db("myDatabase").collection("myCollection").getDocument("001", User.class);
使用_id读取:
String json = arangoDB.db("myDatabase").getDocument("myCollection/001", String.class);