El jueves, 18 de junio de 2015, 17:26:33 (UTC+2), José Álvarez de Lara
escribió:
>
>
>
> El jueves, 18 de junio de 2015, 7:49:55 (UTC+2), Michael Hunger escribió:
>>
>> And also put it please up as a github gist or repository
>>
>> Thanks!!
>>
>> Von meinem iPhone gesendet
>>
>> Am 18.06.2015 um 03:13 schrieb José Álvarez de Lara <[email protected]>:
>>
>>
>>
>> El jueves, 18 de junio de 2015, 0:23:31 (UTC+2), Michael Hunger escribió:
>>>
>>> Hi Jose,
>>>
>>> thanks so much for your investigative work.
>>>
>>> Would you mind writing this up as a blog post? And publish it, then we
>>> can help you promote it too.
>>>
>>> Cheers, Michael
>>>
>>> Am 17.06.2015 um 00:30 schrieb José Álvarez de Lara <[email protected]
>>> >:
>>>
>>> Based on "The Neo4j v2.3.0-M01 Manual" manual under "7.1. How to use the
>>> REST API from Java"
>>> I have tried to develop a similar code and using the latest Jersey
>>> library to date is 2.18.
>>>
>>> Authentication would take place the following code snippet,
>>>
>>> private static WebTarget testDatabaseAuthentication()
>>> {
>>> // START SNIPPET: testAuthentication
>>> Client client = ClientBuilder.newClient();
>>> HttpAuthenticationFeature authFeature = HttpAuthenticationFeature.basic(
>>> username, password);
>>> client.register(authFeature); WebTarget target = client.
>>> target(SERVER_ROOT_URI);
>>>
>>> Response response = target
>>> .request()
>>> .header("application/xml", "true")
>>> .get();
>>>
>>> String entity = response.readEntity(String.class); System
>>> .out.println( String.format(
>>> "GET, status code [%d], returned data: "
>>> + System.getProperty( "line.separator" ) + "%s",
>>> response.getStatus(), entity ) ); response.close
>>> ();
>>> return target;
>>> // END SNIPPET: testAuthentication
>>> }Introducir código aquí...
>>>
>>> being the username and password those used to log onto the Neo4j server.
>>>
>>> With the authentication method I recover the 'target' object of the
>>> WebTarget
>>> class and keep it throughout the whole program so as I do not to need to
>>> login
>>> in each of the different and consecutive methods again.
>>>
>>> I added a helper method to extract the path of each node that then I
>>> will use
>>> in the different methods. The code snippet is as follows,
>>>
>>> private static String extractPathFromNode( URI node ) {
>>> String auxUri = node.toString();
>>> return auxUri.replace(SERVER_ROOT_URI, "");
>>> }Introducir código aquí...
>>>
>>> and what I do is to recover the resulting part of removing the
>>> SERVER_ROOT_URI root
>>> (the root "http://localhost:7474/db/data/"; is what I used to login)
>>> which is the
>>> 'target' object now.
>>>
>>> The rest of the methods will use the 'target' object with the path
>>> extracted from
>>> the nodes or properties. I supply now the code snippet of each one,
>>>
>>>
>>> private static void sendTransactionalCypherQuery( WebTarget target,
>>> String query ) {
>>> // START SNIPPET: queryAllNodes
>>> final String txUri = "transaction/commit";
>>> //WebResource resource = Client.create().resource( txUri );
>>> String payload = "{\"statements\" : [ {\"statement\" : \"" + query +
>>> "\"} ]}";
>>>
>>> Response response = target
>>> .path(txUri)
>>> .request(MediaType.APPLICATION_JSON)
>>> .header("application/xml", "true")
>>> .accept(MediaType.APPLICATION_JSON)
>>> .post(Entity.entity(payload, MediaType.
>>> APPLICATION_JSON_TYPE));
>>>
>>> String entity = response.readEntity(String.class); System
>>> .out.println( String.format(
>>> "GET, status code [%d], returned data: "
>>> + System.getProperty( "line.separator" ) + "%s",
>>> response.getStatus(), entity ) ); response.close
>>> ();
>>> // END SNIPPET: queryAllNodes
>>> }
>>>
>>> private static void findSingersInBands( WebTarget target, URI
>>> startNode )
>>> //throws URISyntaxException
>>> {
>>> // START SNIPPET: traversalDesc
>>> // TraversalDefinition turns into JSON to send to the Server
>>> TraversalDefinition t = new TraversalDefinition();
>>> t.setOrder( TraversalDefinition.DEPTH_FIRST );
>>> t.setUniqueness( TraversalDefinition.NODE );
>>> t.setMaxDepth( 10 );
>>> t.setReturnFilter( TraversalDefinition.ALL );
>>> t.setRelationships( new Relation( "singer", Relation.OUT ) );
>>> // END SNIPPET: traversalDesc // START SNIPPET: traverse
>>> //URI traverserUri = new URI( startNode.toString() +
>>> "/traverse/node" );
>>> String auxPath = extractPathFromNode( startNode );
>>> String traverserUri = auxPath + "/traverse/node";
>>> String jsonTraverserPayload = t.toJson();
>>>
>>> // POST {} to the node entry point URI
>>> Response response = target
>>> .path(traverserUri)
>>> .request(MediaType.APPLICATION_JSON)
>>> .header("application/xml", "true")
>>> .accept(MediaType.APPLICATION_JSON)
>>> .post(Entity.entity(jsonTraverserPayload, MediaType.
>>> APPLICATION_JSON_TYPE));
>>>
>>> System.out.println( String.format(
>>> "POST [%s] to [%s], status code [%d], returned data: "
>>> + System.getProperty( "line.separator" ) + "%s",
>>> jsonTraverserPayload, traverserUri, response.getStatus
>>> (),
>>> response.getEntity().toString() ) );
>>>
>>> response.close();
>>> // END SNIPPET: traverse
>>> }
>>>
>>> // START SNIPPET: insideAddMetaToProp
>>> private static void addMetadataToProperty( WebTarget target, URI
>>> relationshipUri,
>>> String name, String value ) //throws URISyntaxException
>>> {
>>> //URI propertyUri = new URI( relationshipUri.toString() +
>>> "/properties" );
>>> String auxPath = extractPathFromNode( relationshipUri );
>>> String propertyUri = auxPath + "/properties";
>>> String entity = toJsonNameValuePairCollection( name, value );
>>>
>>> Response response = target
>>> .path(propertyUri)
>>> .request(MediaType.APPLICATION_JSON)
>>> .header("application/xml", "true")
>>> .accept(MediaType.APPLICATION_JSON)
>>> .put(Entity.entity(entity, MediaType.
>>> APPLICATION_JSON_TYPE));
>>>
>>> System.out.println( String.format(
>>> "PUT [%s] to [%s], status code [%d]", entity,
>>> propertyUri,
>>> response.getStatus() ) );
>>>
>>> response.close();
>>> }
>>> // END SNIPPET: insideAddMetaToProp
>>>
>>> private static String toJsonNameValuePairCollection( String name,
>>>
>>>
>>
>>
>> Hi Michael,
>>
>> Thank you for to be so kind.
>>
>> I will publish it in WordPress where I have opened an account.
>>
>> This time I will include the main method to finish completing the blog
>> post.
>>
>> Kind regards,
>> José
>>
>>> ...
>>
>> Here is the blog post I posted.
>>
>>
> http://neo4j-and-java-rest-api-auth.blogspot.com.es/p/how-to-use-rest-api-from-java-when-auth.html
>
>> Finally I decided to Google Blogger because I did not see the way of how
>>> to use SyntaxHighlighter in WordPress.
>>
>> Cheers
>
Here is the Project on GitHub repository,
https://github.com/GGSvennson/Neo4jRestApi
Thanks,
Jose
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