|
11 | 11 | |Nebula Graph 版本|Nebula Java 版本| |
12 | 12 | |:---|:---| |
13 | 13 | |{{ nebula.release }}|{{java.release}}| |
14 | | -|2.0.1|2.0.0| |
15 | | -|2.0.0|2.0.0| |
| 14 | +|2.6.x|2.6.1| |
| 15 | +|2.0.x|2.0.0| |
16 | 16 | |2.0.0-rc1|2.0.0-rc1| |
17 | 17 |
|
18 | 18 | ## 下载 Nebula Java |
19 | 19 |
|
20 | 20 | - （推荐）如果需要使用指定版本的 Nebula Java，请使用选项`--branch`指定分支。例如使用 v{{ java.release }}发布版本，请执行如下命令： |
21 | 21 |
|
22 | 22 | ```bash |
23 | | - $ git clone --branch v{{ java.release }} https://github.com/vesoft-inc/nebula-java.git |
| 23 | + $ git clone --branch {{java.branch}} https://github.com/vesoft-inc/nebula-java.git |
24 | 24 | ``` |
25 | 25 |
|
26 | 26 | - 如果需要安装日常开发版本，请执行如下命令下载`master`分支的源码： |
|
39 | 39 |
|
40 | 40 | !!! note |
41 | 41 |
|
42 | | - `2.0.0-SNAPSHOT`为日常研发版本，可能存在未知问题，建议使用 release 版本号替换`2.0.0-SNAPSHOT`。 |
| 42 | + `3.0.0-SNAPSHOT`为日常研发版本，可能存在未知问题，建议使用 release 版本号替换`3.0.0-SNAPSHOT`。 |
43 | 43 |
|
44 | 44 | ```bash |
45 | 45 | <dependency> |
46 | 46 | <groupId>com.vesoft</groupId> |
47 | 47 | <artifactId>client</artifactId> |
48 | | - <version>2.0.0-SNAPSHOT</version> |
| 48 | + <version>3.0.0-SNAPSHOT</version> |
49 | 49 | </dependency> |
50 | 50 | ``` |
51 | 51 |
|
|
64 | 64 |
|
65 | 65 | ### 核心代码 |
66 | 66 |
|
67 | | -详细示例请参见 [GraphClientExample](https://github.com/vesoft-inc/nebula-java/blob/master/examples/src/main/java/com/vesoft/nebula/examples/GraphClientExample.java)。 |
68 | | - |
69 | | -```java |
70 | | -NebulaPool pool = new NebulaPool(); |
71 | | -Session session = null; |
72 | | -try { |
73 | | - NebulaPoolConfig nebulaPoolConfig = new NebulaPoolConfig(); |
74 | | - nebulaPoolConfig.setMaxConnSize(100); |
75 | | - List<HostAddress> addresses = Arrays.asList(new HostAddress("192.168.xx.1", 9669), |
76 | | - new HostAddress("192.168.xx.2", 9670)); |
77 | | - pool.init(addresses, nebulaPoolConfig); |
78 | | - session = pool.getSession("root", "nebula", false); |
79 | | - |
80 | | - //create space |
81 | | - String space = "test"; |
82 | | - String createSpace = "CREATE SPACE IF NOT EXISTS " + space + " (partition_num=15, replica_factor=1, vid_type=fixed_string(30)); "; |
83 | | - ResultSet resp = session.execute(createSpace); |
84 | | - |
85 | | - //create schema |
86 | | - String createSchema = "USE " + space + "; CREATE TAG IF NOT EXISTS person(name string, age int);" |
87 | | - + "CREATE EDGE IF NOT EXISTS like(likeness double)"; |
88 | | - ResultSet resp = session.execute(createSchema); |
89 | | - |
90 | | - //insert vertex |
91 | | - String insertVertexes = "INSERT VERTEX person(name, age) VALUES " + "'Bob':('Bob', 10), " |
92 | | - + "'Lily':('Lily', 9), " + "'Tom':('Tom', 10), " + "'Jerry':('Jerry', 13), " |
93 | | - + "'John':('John', 11);"; |
94 | | - ResultSet resp = session.execute(insertVertexes); |
95 | | - |
96 | | - // inert edge |
97 | | - String insertEdges = "INSERT EDGE like(likeness) VALUES " + "'Bob'->'Lily':(80.0), " |
98 | | - + "'Bob'->'Tom':(70.0), " + "'Lily'->'Jerry':(84.0), " + "'Tom'->'Jerry':(68.3), " |
99 | | - + "'Bob'->'John':(97.2);"; |
100 | | - ResultSet resp = session.execute(insertEdges); |
101 | | - |
102 | | - // query |
103 | | - String query = "GO FROM \"Bob\" OVER like " + "YIELD properties($$).name, properties($$).age, properties(edge).likeness"; |
104 | | - ResultSet resp = session.execute(query); |
105 | | - printResult(resp); |
106 | | -}finally { |
107 | | - if (session != null) { |
108 | | - session.release(); |
109 | | - } |
110 | | - pool.close(); |
111 | | -} |
112 | | -``` |
| 67 | +详细示例请参见 [GraphClientExample](https://github.com/vesoft-inc/nebula-java/blob/{{java.branch}}/examples/src/main/java/com/vesoft/nebula/examples/GraphClientExample.java)。 |
| 68 | + |
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