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David Pilato 2c18d35b59 Create branches according to elasticsearch versions

We create branches:

* es-0.90 for elasticsearch 0.90
* es-1.0 for elasticsearch 1.0
* es-1.1 for elasticsearch 1.1
* master for elasticsearch master

We also check that before releasing we don't have a dependency to an elasticsearch SNAPSHOT version.

Add links to each version in documentation

2014-03-28 18:35:25 +01:00

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Python lang Plugin for Elasticsearch

The Python (jython) language plugin allows to have python as the language of scripts to execute.

In order to install the plugin, simply run: bin/plugin -install elasticsearch/elasticsearch-lang-python/2.0.0.

For master elasticsearch versions, look at master branch.
For 1.1.x elasticsearch versions, look at es-1.1 branch.
For 1.0.x elasticsearch versions, look at es-1.0 branch.
For 0.90.x elasticsearch versions, look at es-0.90 branch.

Python Lang Plugin	elasticsearch	jython	Release date
3.0.0-SNAPSHOT	master	2.5.3	XXXX-XX-XX

Please read documentation relative to the version you are using:

3.0.0-SNAPSHOT

Using python with function_score

Let's say you want to use function_score API using python. Here is a way of doing it:

curl -XDELETE "http://localhost:9200/test"

curl -XPUT "http://localhost:9200/test/doc/1" -d '{
  "num": 1.0
}'

curl -XPUT "http://localhost:9200/test/doc/2?refresh" -d '{
  "num": 2.0
}'

curl -XGET "http://localhost:9200/test/_search?pretty" -d'
{
  "query": {
    "function_score": {
      "script_score": {
        "script": "doc[\"num\"].value * _score",
        "lang": "python"
      }
    }
  }
}'

gives

{
   // ...
   "hits": {
      "total": 2,
      "max_score": 2,
      "hits": [
         {
            // ...
            "_score": 2
         },
         {
            // ...
            "_score": 1
         }
      ]
   }
}

Using python with script_fields

curl -XDELETE "http://localhost:9200/test"

curl -XPUT "http://localhost:9200/test/doc/1?refresh" -d'
{
  "obj1": {
   "test": "something"
  },
  "obj2": {
    "arr2": [ "arr_value1", "arr_value2" ]
  }
}'

curl -XGET "http://localhost:9200/test/_search" -d'
{
  "script_fields": {
    "s_obj1": {
      "script": "_source[\"obj1\"]", "lang": "python"
    },
    "s_obj1_test": {
      "script": "_source[\"obj1\"][\"test\"]", "lang": "python"
    },
    "s_obj2": {
      "script": "_source[\"obj2\"]", "lang": "python"
    },
    "s_obj2_arr2": {
      "script": "_source[\"obj2\"][\"arr2\"]", "lang": "python"
    }
  }
}'