How to get the current entry of a foreach pipeline instruction using painless scripting?










0















I am trying to count JSON objects based on a flag.
To do so, I created two foreach pipelines iterating over my objects.



I want to count all the objects in the documents array for which the field "count" is set to true.



POST _ingest/pipeline/_simulate

"pipeline":
"description":"...",
"processors":[

"set":
"field":"specific.docCount",
"value":0

,

"foreach":
"field":"data.status.transactions",
"processor":
"foreach":
"field":"_ingest._value.documents",
"processor":
"script":
"lang":"painless",
"inline":"if (ctx.count) ctx.specific.docCount += 1"






]
,
"docs":[

"_source":
"data":
"status":
"transactions":[

"id":"123",
"documents":[

"count": true
,

"count": false

]

]




]



I'm getting the following error :




"docs": [

"error":
"root_cause": [

"type": "exception",
"reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
"header":
"processor_type": "foreach"


],
"type": "exception",
"reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
"caused_by":
"type": "illegal_argument_exception",
"reason": "ScriptException[runtime error]; nested: NullPointerException;",
"caused_by":
"type": "script_exception",
"reason": "runtime error",
"script_stack": [
"if (ctx.count) ",
" ^---- HERE"
],
"script": "if (ctx.count) ctx.stats.docCount += 1",
"lang": "painless",
"caused_by":
"type": "null_pointer_exception",
"reason": null


,
"header":
"processor_type": "foreach"



]



This foreach pipeline doc suggests to use ctx to refer to the ingest document, but I am not sure how to use this in my case.



How can I retrieve the current "foreach entry" in my painless script ?










share|improve this question




























    0















    I am trying to count JSON objects based on a flag.
    To do so, I created two foreach pipelines iterating over my objects.



    I want to count all the objects in the documents array for which the field "count" is set to true.



    POST _ingest/pipeline/_simulate

    "pipeline":
    "description":"...",
    "processors":[

    "set":
    "field":"specific.docCount",
    "value":0

    ,

    "foreach":
    "field":"data.status.transactions",
    "processor":
    "foreach":
    "field":"_ingest._value.documents",
    "processor":
    "script":
    "lang":"painless",
    "inline":"if (ctx.count) ctx.specific.docCount += 1"






    ]
    ,
    "docs":[

    "_source":
    "data":
    "status":
    "transactions":[

    "id":"123",
    "documents":[

    "count": true
    ,

    "count": false

    ]

    ]




    ]



    I'm getting the following error :




    "docs": [

    "error":
    "root_cause": [

    "type": "exception",
    "reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
    "header":
    "processor_type": "foreach"


    ],
    "type": "exception",
    "reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
    "caused_by":
    "type": "illegal_argument_exception",
    "reason": "ScriptException[runtime error]; nested: NullPointerException;",
    "caused_by":
    "type": "script_exception",
    "reason": "runtime error",
    "script_stack": [
    "if (ctx.count) ",
    " ^---- HERE"
    ],
    "script": "if (ctx.count) ctx.stats.docCount += 1",
    "lang": "painless",
    "caused_by":
    "type": "null_pointer_exception",
    "reason": null


    ,
    "header":
    "processor_type": "foreach"



    ]



    This foreach pipeline doc suggests to use ctx to refer to the ingest document, but I am not sure how to use this in my case.



    How can I retrieve the current "foreach entry" in my painless script ?










    share|improve this question


























      0












      0








      0








      I am trying to count JSON objects based on a flag.
      To do so, I created two foreach pipelines iterating over my objects.



      I want to count all the objects in the documents array for which the field "count" is set to true.



      POST _ingest/pipeline/_simulate

      "pipeline":
      "description":"...",
      "processors":[

      "set":
      "field":"specific.docCount",
      "value":0

      ,

      "foreach":
      "field":"data.status.transactions",
      "processor":
      "foreach":
      "field":"_ingest._value.documents",
      "processor":
      "script":
      "lang":"painless",
      "inline":"if (ctx.count) ctx.specific.docCount += 1"






      ]
      ,
      "docs":[

      "_source":
      "data":
      "status":
      "transactions":[

      "id":"123",
      "documents":[

      "count": true
      ,

      "count": false

      ]

      ]




      ]



      I'm getting the following error :




      "docs": [

      "error":
      "root_cause": [

      "type": "exception",
      "reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
      "header":
      "processor_type": "foreach"


      ],
      "type": "exception",
      "reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
      "caused_by":
      "type": "illegal_argument_exception",
      "reason": "ScriptException[runtime error]; nested: NullPointerException;",
      "caused_by":
      "type": "script_exception",
      "reason": "runtime error",
      "script_stack": [
      "if (ctx.count) ",
      " ^---- HERE"
      ],
      "script": "if (ctx.count) ctx.stats.docCount += 1",
      "lang": "painless",
      "caused_by":
      "type": "null_pointer_exception",
      "reason": null


      ,
      "header":
      "processor_type": "foreach"



      ]



      This foreach pipeline doc suggests to use ctx to refer to the ingest document, but I am not sure how to use this in my case.



      How can I retrieve the current "foreach entry" in my painless script ?










      share|improve this question
















      I am trying to count JSON objects based on a flag.
      To do so, I created two foreach pipelines iterating over my objects.



      I want to count all the objects in the documents array for which the field "count" is set to true.



      POST _ingest/pipeline/_simulate

      "pipeline":
      "description":"...",
      "processors":[

      "set":
      "field":"specific.docCount",
      "value":0

      ,

      "foreach":
      "field":"data.status.transactions",
      "processor":
      "foreach":
      "field":"_ingest._value.documents",
      "processor":
      "script":
      "lang":"painless",
      "inline":"if (ctx.count) ctx.specific.docCount += 1"






      ]
      ,
      "docs":[

      "_source":
      "data":
      "status":
      "transactions":[

      "id":"123",
      "documents":[

      "count": true
      ,

      "count": false

      ]

      ]




      ]



      I'm getting the following error :




      "docs": [

      "error":
      "root_cause": [

      "type": "exception",
      "reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
      "header":
      "processor_type": "foreach"


      ],
      "type": "exception",
      "reason": "java.lang.IllegalArgumentException: ScriptException[runtime error]; nested: NullPointerException;",
      "caused_by":
      "type": "illegal_argument_exception",
      "reason": "ScriptException[runtime error]; nested: NullPointerException;",
      "caused_by":
      "type": "script_exception",
      "reason": "runtime error",
      "script_stack": [
      "if (ctx.count) ",
      " ^---- HERE"
      ],
      "script": "if (ctx.count) ctx.stats.docCount += 1",
      "lang": "painless",
      "caused_by":
      "type": "null_pointer_exception",
      "reason": null


      ,
      "header":
      "processor_type": "foreach"



      ]



      This foreach pipeline doc suggests to use ctx to refer to the ingest document, but I am not sure how to use this in my case.



      How can I retrieve the current "foreach entry" in my painless script ?







      elasticsearch elasticsearch-painless






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 14 '18 at 13:23







      Louis

















      asked Nov 14 '18 at 13:08









      LouisLouis

      557620




      557620






















          1 Answer
          1






          active

          oldest

          votes


















          0














          I ended up doing the whole thing in the painless script.



          POST _ingest/pipeline/_simulate

          "pipeline":
          "description":"...",
          "processors":[

          "set":
          "field":"stats.docCount",
          "value":0

          ,

          "script":
          "lang":"painless",
          "inline":"def transactions = ctx.data.status.transactions; for (def transaction : transactions) def documents = transaction.documents; for (def document : documents)if (document.count != null && document.count)ctx.stats.docCount += 1"


          ]
          ,
          "docs":[

          "_source":
          "data":
          "status":
          "transactions":[

          "id":"123",
          "documents":[

          "count":true
          ,

          "count":false

          ]

          ]



          ,

          "_source":
          "data":
          "status":
          "transactions":[

          "id":"234",
          "documents":[

          "count":true
          ,

          "count":true

          ]

          ]



          ,

          "_source":
          "data":
          "status":
          "transactions":[

          "id":"345",
          "documents":[


          ,

          "count":true

          ]

          ]




          ]



          Output:




          "docs": [

          "doc":
          "_id": "_id",
          "_index": "_index",
          "_type": "_type",
          "_source":
          "data":
          "status":
          "transactions": [

          "documents": [

          "count": true
          ,

          "count": false

          ],
          "id": "123"

          ]

          ,
          "stats":
          "docCount": 1

          ,
          "_ingest":
          "timestamp": "2018-11-14T13:46:29.963Z"


          ,

          "doc":
          "_id": "_id",
          "_index": "_index",
          "_type": "_type",
          "_source":
          "data":
          "status":
          "transactions": [

          "documents": [

          "count": true
          ,

          "count": true

          ],
          "id": "234"

          ]

          ,
          "stats":
          "docCount": 2

          ,
          "_ingest":
          "timestamp": "2018-11-14T13:46:29.963Z"


          ,

          "doc":
          "_id": "_id",
          "_index": "_index",
          "_type": "_type",
          "_source":
          "data":
          "status":
          "transactions": [

          "documents": [
          ,

          "count": true

          ],
          "id": "345"

          ]

          ,
          "stats":
          "docCount": 1

          ,
          "_ingest":
          "timestamp": "2018-11-14T13:46:29.963Z"



          ]






          share|improve this answer






















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            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            I ended up doing the whole thing in the painless script.



            POST _ingest/pipeline/_simulate

            "pipeline":
            "description":"...",
            "processors":[

            "set":
            "field":"stats.docCount",
            "value":0

            ,

            "script":
            "lang":"painless",
            "inline":"def transactions = ctx.data.status.transactions; for (def transaction : transactions) def documents = transaction.documents; for (def document : documents)if (document.count != null && document.count)ctx.stats.docCount += 1"


            ]
            ,
            "docs":[

            "_source":
            "data":
            "status":
            "transactions":[

            "id":"123",
            "documents":[

            "count":true
            ,

            "count":false

            ]

            ]



            ,

            "_source":
            "data":
            "status":
            "transactions":[

            "id":"234",
            "documents":[

            "count":true
            ,

            "count":true

            ]

            ]



            ,

            "_source":
            "data":
            "status":
            "transactions":[

            "id":"345",
            "documents":[


            ,

            "count":true

            ]

            ]




            ]



            Output:




            "docs": [

            "doc":
            "_id": "_id",
            "_index": "_index",
            "_type": "_type",
            "_source":
            "data":
            "status":
            "transactions": [

            "documents": [

            "count": true
            ,

            "count": false

            ],
            "id": "123"

            ]

            ,
            "stats":
            "docCount": 1

            ,
            "_ingest":
            "timestamp": "2018-11-14T13:46:29.963Z"


            ,

            "doc":
            "_id": "_id",
            "_index": "_index",
            "_type": "_type",
            "_source":
            "data":
            "status":
            "transactions": [

            "documents": [

            "count": true
            ,

            "count": true

            ],
            "id": "234"

            ]

            ,
            "stats":
            "docCount": 2

            ,
            "_ingest":
            "timestamp": "2018-11-14T13:46:29.963Z"


            ,

            "doc":
            "_id": "_id",
            "_index": "_index",
            "_type": "_type",
            "_source":
            "data":
            "status":
            "transactions": [

            "documents": [
            ,

            "count": true

            ],
            "id": "345"

            ]

            ,
            "stats":
            "docCount": 1

            ,
            "_ingest":
            "timestamp": "2018-11-14T13:46:29.963Z"



            ]






            share|improve this answer



























              0














              I ended up doing the whole thing in the painless script.



              POST _ingest/pipeline/_simulate

              "pipeline":
              "description":"...",
              "processors":[

              "set":
              "field":"stats.docCount",
              "value":0

              ,

              "script":
              "lang":"painless",
              "inline":"def transactions = ctx.data.status.transactions; for (def transaction : transactions) def documents = transaction.documents; for (def document : documents)if (document.count != null && document.count)ctx.stats.docCount += 1"


              ]
              ,
              "docs":[

              "_source":
              "data":
              "status":
              "transactions":[

              "id":"123",
              "documents":[

              "count":true
              ,

              "count":false

              ]

              ]



              ,

              "_source":
              "data":
              "status":
              "transactions":[

              "id":"234",
              "documents":[

              "count":true
              ,

              "count":true

              ]

              ]



              ,

              "_source":
              "data":
              "status":
              "transactions":[

              "id":"345",
              "documents":[


              ,

              "count":true

              ]

              ]




              ]



              Output:




              "docs": [

              "doc":
              "_id": "_id",
              "_index": "_index",
              "_type": "_type",
              "_source":
              "data":
              "status":
              "transactions": [

              "documents": [

              "count": true
              ,

              "count": false

              ],
              "id": "123"

              ]

              ,
              "stats":
              "docCount": 1

              ,
              "_ingest":
              "timestamp": "2018-11-14T13:46:29.963Z"


              ,

              "doc":
              "_id": "_id",
              "_index": "_index",
              "_type": "_type",
              "_source":
              "data":
              "status":
              "transactions": [

              "documents": [

              "count": true
              ,

              "count": true

              ],
              "id": "234"

              ]

              ,
              "stats":
              "docCount": 2

              ,
              "_ingest":
              "timestamp": "2018-11-14T13:46:29.963Z"


              ,

              "doc":
              "_id": "_id",
              "_index": "_index",
              "_type": "_type",
              "_source":
              "data":
              "status":
              "transactions": [

              "documents": [
              ,

              "count": true

              ],
              "id": "345"

              ]

              ,
              "stats":
              "docCount": 1

              ,
              "_ingest":
              "timestamp": "2018-11-14T13:46:29.963Z"



              ]






              share|improve this answer

























                0












                0








                0







                I ended up doing the whole thing in the painless script.



                POST _ingest/pipeline/_simulate

                "pipeline":
                "description":"...",
                "processors":[

                "set":
                "field":"stats.docCount",
                "value":0

                ,

                "script":
                "lang":"painless",
                "inline":"def transactions = ctx.data.status.transactions; for (def transaction : transactions) def documents = transaction.documents; for (def document : documents)if (document.count != null && document.count)ctx.stats.docCount += 1"


                ]
                ,
                "docs":[

                "_source":
                "data":
                "status":
                "transactions":[

                "id":"123",
                "documents":[

                "count":true
                ,

                "count":false

                ]

                ]



                ,

                "_source":
                "data":
                "status":
                "transactions":[

                "id":"234",
                "documents":[

                "count":true
                ,

                "count":true

                ]

                ]



                ,

                "_source":
                "data":
                "status":
                "transactions":[

                "id":"345",
                "documents":[


                ,

                "count":true

                ]

                ]




                ]



                Output:




                "docs": [

                "doc":
                "_id": "_id",
                "_index": "_index",
                "_type": "_type",
                "_source":
                "data":
                "status":
                "transactions": [

                "documents": [

                "count": true
                ,

                "count": false

                ],
                "id": "123"

                ]

                ,
                "stats":
                "docCount": 1

                ,
                "_ingest":
                "timestamp": "2018-11-14T13:46:29.963Z"


                ,

                "doc":
                "_id": "_id",
                "_index": "_index",
                "_type": "_type",
                "_source":
                "data":
                "status":
                "transactions": [

                "documents": [

                "count": true
                ,

                "count": true

                ],
                "id": "234"

                ]

                ,
                "stats":
                "docCount": 2

                ,
                "_ingest":
                "timestamp": "2018-11-14T13:46:29.963Z"


                ,

                "doc":
                "_id": "_id",
                "_index": "_index",
                "_type": "_type",
                "_source":
                "data":
                "status":
                "transactions": [

                "documents": [
                ,

                "count": true

                ],
                "id": "345"

                ]

                ,
                "stats":
                "docCount": 1

                ,
                "_ingest":
                "timestamp": "2018-11-14T13:46:29.963Z"



                ]






                share|improve this answer













                I ended up doing the whole thing in the painless script.



                POST _ingest/pipeline/_simulate

                "pipeline":
                "description":"...",
                "processors":[

                "set":
                "field":"stats.docCount",
                "value":0

                ,

                "script":
                "lang":"painless",
                "inline":"def transactions = ctx.data.status.transactions; for (def transaction : transactions) def documents = transaction.documents; for (def document : documents)if (document.count != null && document.count)ctx.stats.docCount += 1"


                ]
                ,
                "docs":[

                "_source":
                "data":
                "status":
                "transactions":[

                "id":"123",
                "documents":[

                "count":true
                ,

                "count":false

                ]

                ]



                ,

                "_source":
                "data":
                "status":
                "transactions":[

                "id":"234",
                "documents":[

                "count":true
                ,

                "count":true

                ]

                ]



                ,

                "_source":
                "data":
                "status":
                "transactions":[

                "id":"345",
                "documents":[


                ,

                "count":true

                ]

                ]




                ]



                Output:




                "docs": [

                "doc":
                "_id": "_id",
                "_index": "_index",
                "_type": "_type",
                "_source":
                "data":
                "status":
                "transactions": [

                "documents": [

                "count": true
                ,

                "count": false

                ],
                "id": "123"

                ]

                ,
                "stats":
                "docCount": 1

                ,
                "_ingest":
                "timestamp": "2018-11-14T13:46:29.963Z"


                ,

                "doc":
                "_id": "_id",
                "_index": "_index",
                "_type": "_type",
                "_source":
                "data":
                "status":
                "transactions": [

                "documents": [

                "count": true
                ,

                "count": true

                ],
                "id": "234"

                ]

                ,
                "stats":
                "docCount": 2

                ,
                "_ingest":
                "timestamp": "2018-11-14T13:46:29.963Z"


                ,

                "doc":
                "_id": "_id",
                "_index": "_index",
                "_type": "_type",
                "_source":
                "data":
                "status":
                "transactions": [

                "documents": [
                ,

                "count": true

                ],
                "id": "345"

                ]

                ,
                "stats":
                "docCount": 1

                ,
                "_ingest":
                "timestamp": "2018-11-14T13:46:29.963Z"



                ]







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 14 '18 at 13:47









                LouisLouis

                557620




                557620



























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