New java library for the elastic search version of the service

[shroffk]

This issue ticket is to discuss the development of the new java client library corresponding to the new version of channel finder service based on elastic search.

[fedordjia]

I met the following problems when make the library's unitest. I'm not sure whether these are service's problem or library api's problems. Need help discussing these.

1. I can only use the xml format when I ask a post request to the url/channels.
   1.1. The main code is as follow:
   JSONObject testjson = new JSONObject();
   try {
   testjson.put("@name", "C2");
   testjson.put("@owner", "owner");
   } catch (JSONException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   }
   service.path(resourceChannels).type(MediaType.APPLICATION_JSON).post(testjson.toString());
   1.2. The main errorlog is as follow:
   [#|2015-11-13T13:32:09.796+0800|SEVERE|glassfish3.1.2|com.sun.jersey.spi.container.ContainerResponse|_ThreadID=81;_ThreadName=Thread-2;|The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
   java.util.NoSuchElementException
   [#|2015-11-13T13:32:09.800+0800|WARNING|glassfish3.1.2|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=81;_ThreadName=Thread-2;|StandardWrapperValve[ServletAdaptor]: PWC1406: Servlet.service() for servlet ServletAdaptor threw exception
   java.util.NoSuchElementException
2. I can only get JSON response when I ask a get request to the url/channels. So I added a method to the api to convert the JSON string to a xmlchannel.
3. When a tag is related with a channel, I can not set it or delete it.
   3.1. The main code is:
   service.path(elementType).path(elementName).delete();
   3.2. The main error log is:
   [#|2015-11-13T13:50:20.744+0800|SEVERE|glassfish3.1.2|gov.bnl.channelfinder.audit|_ThreadID=82;_ThreadName=Thread-2;|failure in bulk execution:
   [1]: index [channelfinder], type [channel], id [C1], message [ElasticsearchIllegalArgumentException[failed to execute script]; nested: ScriptException[scripts of type [inline], operation [update] and lang [groovy] are disabled]; ]|#]
   [#|2015-11-13T13:50:20.745+0800|WARNING|glassfish3.1.2|gov.bnl.channelfinder.TagsResource|_ThreadID=82;_ThreadName=Thread-2;|admin|tags/T1|GET|ERROR|Internal Server Error|cause=java.lang.Exception|#]
4. I can update a channel’s tag issue by asking a post request to url/channels. But I can not do this using put or post request to url/tags/tagname or url/properties/propertyname. A internal error http status will be back.
   4.1. The main code is as follow:
   service.path(resourceTags)
   .path(this.xmlTag.getName())
   .accept(MediaType.APPLICATION_XML).put(this.xmlTag);
   4.2. The main error log is as follow:
   [#|2015-11-13T14:05:35.808+0800|SEVERE|glassfish3.1.2|gov.bnl.channelfinder.audit|_ThreadID=81;_ThreadName=Thread-2;|failure in bulk execution:
   [1]: index [channelfinder], type [channel], id [C1], message [ElasticsearchIllegalArgumentException[failed to execute script]; nested: ScriptException[scripts of type [inline], operation [update] and lang [groovy] are disabled]; ]|#]
   [#|2015-11-13T14:05:35.808+0800|WARNING|glassfish3.1.2|gov.bnl.channelfinder.TagsResource|_ThreadID=81;_ThreadName=Thread-2;|admin|tags/TestTag|GET|ERROR|Internal Server Error|cause=java.lang.Exception|#]
5. The symbol “ ” “/” “\t” “\n” can be used in a channel name. Is this correspondenced to the design?

[fedordjia]

I modified the java client api with Jackson-JSON package and got the communication protocol between client and server by reading some server codes. Most api can work now, but I still have some issues need to be checked.

1. I can only create a channel when it's property and tag value are not null.
   The server log is:
   [#|2015-11-18T01:05:12.086+0800|WARNING|glassfish3.1.2|gov.bnl.channelfinder.ChannelsResource|_ThreadID=99;_ThreadName=Thread-2;|admin|channels|POST|ERROR|Bad Request|cause=java.lang.IllegalArgumentException: Invalid property value (missing or null or empty string) for 'null'|#]
2. When a tag is related with a channel, I can not set it or delete it.
   The server log is:
   [#|2015-11-18T01:08:57.052+0800|SEVERE|glassfish3.1.2|gov.bnl.channelfinder.audit|_ThreadID=95;_ThreadName=Thread-2;|failure in bulk execution:
   [1]: index [channelfinder], type [channel], id [C1], message [ElasticsearchIllegalArgumentException[failed to execute script]; nested: ScriptException[scripts of type [inline], operation [update] and lang [groovy] are disabled]; ]|#]

[#|2015-11-18T01:08:57.052+0800|WARNING|glassfish3.1.2|gov.bnl.channelfinder.TagsResource|_ThreadID=95;_ThreadName=Thread-2;|admin|tags/T2|GET|ERROR|Internal Server Error|cause=java.lang.Exception|#]

1. I can't set a property with its channels field not null using put method.
   The JSON string I sent to the server is:
   {"@name":"namec3","@value":"valuec3","@owner":null,"channels":{"channel":[{"@name":"C2","@owner":null,"tags":{"tag":[{"@name":"tagnamec2","@owner":"tagownerc2","channels":null}]},"properties":{"property":[{"@name":"namec3","@value":"valuec3","@owner":null,"channels":null}]}}]}}

   The server log is:
   [#|2015-11-18T01:18:38.509+0800|SEVERE|glassfish3.1.2|gov.bnl.channelfinder.audit|_ThreadID=97;_ThreadName=Thread-2;|failure in bulk execution:
   [1]: index [channelfinder], type [channel], id [C2], message [ElasticsearchIllegalArgumentException[failed to execute script]; nested: ScriptException[scripts of type [inline], operation [update] and lang [groovy] are disabled]; ]|#]

[#|2015-11-18T01:18:38.510+0800|WARNING|glassfish3.1.2|gov.bnl.channelfinder.PropertiesResource|_ThreadID=97;_ThreadName=Thread-2;|todo|properties/namec3|GET|ERROR|Internal Server Error|cause=java.lang.Exception|#]

[shroffk]

for the 2nd and 3rd Issue refer to ChannelFinder/ChannelFinderService#10

[fedordjia]

There are still two problems.

1. When updating a property value of some tag, the value will not be updated but that a new property is added with the same name and new value.
2. When delete a tag from some channel, the channel's other tags will be deleted too.

[shroffk]

The above 2 problems should be addressed now