rexpro-client
v0.2.0
Published
RexPro interface for Node.js
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rexpro-client
A simple Rexster client for node.js implementing the binary protocol RexPro.
For more information about the RexPro protocol visit Rexster's wiki.
The client is implemented using q, so every method returns a promise.
Installation
npm install rexpro-client
Examples
Ad-hoc query
var RexProClient = require("rexpro-client");
var client = RexProClient({
host: "localhost", // default
port: 8184, // default
graph: "tinkerpop",
serializer: "msgpack" // Defining a serializer is optional,
}); // 'json' is the default.
var query = {
script: "g.V.has('name', name).out()",
bindings: {
name: "titan"
}
};
client.execute(query)
.then(function(data) {
console.log(data);
})
.catch(function(err) {
throw err;
})
.done();
In session query
var session;
client.openSession()
.then(function(uuid) {
// Use the UUID to execute a query
// within the context of this session.
session = uuid;
query.session = uuid;
return client.execute(query);
})
.then(function(data) {
console.log(data);
return client.closeSession({
'session': session
});
})
.catch(function(err) {
throw err;
})
.done();
API
For a more detailed explanation about the parameters see the Rexster's wiki.
openSession(options)
Opens a session and returns the UUID for the session.
graph
- The name of the graph to open a session on. Optional.graphObjName
- The variable name of the graph object. Optional.username
- Used for authentication. Optional.password
- Used for authentication. Optional.
closeSession(options)
Closes a session and returns true if it was successful.
session
- The UUID of the session you want to close.username
- Used for authentication. Optional.password
- Used for authentication. Optional.
execute(options)
Sends a script for execution to the server.
session
- The session's UUID. Optional.serializer
- The type of serialization that this request will use. Optionalgraph
- The name of the graph to open a session on. Optional.graphObjName
- The variable name of the graph object. Optional.inSession
- Indicates this request should be executed in the supplied session. Defaults to false.isolate
- If true bindings from previous messages are not available. Defaults to true.transaction
- Execute the script within a transaction. Defaults to true.console
- If true a console response will be returned. Defaults to false.script
- The script to be executed. Optional.bindings
- An object with the bindings tot he gremlin engine. Optional.
License
MIT