# Problem accessing fields from a native script during percolation

**URL:** https://discuss.elastic.co/t/problem-accessing-fields-from-a-native-script-during-percolation/18442
**Category:** Elasticsearch
**Created:** [July 2, 2014, 1:20pm UTC](https://discuss.elastic.co/t/problem-accessing-fields-from-a-native-script-during-percolation/18442 "2014-07-02T13:20:08Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![petchemaite](https://avatars.discourse-cdn.com/v4/letter/p/e68b1a/32.png) [@petchemaite](https://discuss.elastic.co/u/petchemaite)
#### Post date: [July 2, 2014, 1:20pm UTC](https://discuss.elastic.co/t/problem-accessing-fields-from-a-native-script-during-percolation/18442/1 "2014-07-02T13:20:08Z")

</div>

```
  Hi all,

```

We're trying to figure out how to access fields from within a native  
AbstractSearchScript when it's called from a percolate request that  
contains the document to percolate.  
We tried to use source mechanism and stored fields to no avail (no errors,  
but no matches).  
The same scripts are working fine for classic searches.

This was tried with Elasticsearch release 1.1.1 and a snapshot of 2.0.0.

We're running out of ideas, any help would be really appreciated  
Thanks!

curl -XPOST [http://localhost:9200/index1](http://localhost:9200/index1)  
curl -XPOST [http://localhost:9200/index1/mytype/\_mapping](http://localhost:9200/index1/mytype/_mapping) -d '{  
"properties": {  
"source\_field": { "type": "string" },  
"stored\_field": { "type": "string", "stored": true }  
}  
}'

curl -XPUT "[http://localhost:9200/index1/.percolator/1](http://localhost:9200/index1/.percolator/1)" -d '{  
"query": {  
"filtered": {  
"query" : { "match\_all" : {}},  
"filter": {  
"script": {  
"script": "cooccurenceScript",  
"params": {  
"map": { "list" : ["a"] }  
},  
"lang": "native"  
}  
}  
}  
}  
}'

curl -XPUT "[http://localhost:9200/index1/.percolator/2](http://localhost:9200/index1/.percolator/2)" -d '{  
"query": {  
"filtered": {  
"query" : { "match\_all" : {}},  
"filter": {  
"script": {  
"script": "cooccurenceStoredScript",  
"params": {  
"map": { "list" : ["a"] }  
},  
"lang": "native"  
}  
}  
}  
}  
}'

Native scripts:  
package test;

import java.util.Map;  
import org.elasticsearch.common.Nullable;  
import org.elasticsearch.common.component.AbstractComponent;  
import org.elasticsearch.common.inject.Inject;  
import org.elasticsearch.common.settings.Settings;  
import org.elasticsearch.node.Node;  
import org.elasticsearch.script.ExecutableScript;  
import org.elasticsearch.script.NativeScriptFactory;

public class CooccurenceScriptFactory extends AbstractComponent implements  
NativeScriptFactory{

```
private final Node node;

@SuppressWarnings("unchecked")
@Inject
public CooccurenceScriptFactory(Node node, Settings settings) {
    super(settings);
    this.node = node;
}

@Override public ExecutableScript newScript (@Nullable 

```

Map\<String,Object\> params){  
return new CooccurenceScript(node.client(), logger, params);  
}  
}

package test;

import org.elasticsearch.ElasticsearchIllegalArgumentException;  
import org.elasticsearch.client.Client;  
import org.elasticsearch.common.Nullable;  
import org.elasticsearch.common.logging.ESLogger;  
import org.elasticsearch.common.xcontent.support.XContentMapValues;  
import org.elasticsearch.script.AbstractSearchScript;  
import org.elasticsearch.search.lookup.SourceLookup;

import java.util.List;  
import java.util.Map;

public class CooccurenceScript extends AbstractSearchScript {

```
private List<String> list = null;

@SuppressWarnings("unchecked")
public CooccurenceScript(Client client, ESLogger logger, @Nullable 

```

Map\<String,Object\> params) {  
Map\<String, Object\> map = params == null ? null :  
XContentMapValues.nodeMapValue(params.get("map"), null);  
if (map == null) {  
throw new ElasticsearchIllegalArgumentException("Missing the  
map parameter");  
}  
list = (List) map.get("list");  
if (list == null || list.isEmpty()) {  
throw new ElasticsearchIllegalArgumentException("Missing the  
list parameter or list is empty");  
}  
}

```
@Override
public java.lang.Object run() {
    SourceLookup source = source();
    @SuppressWarnings("unchecked")
    List<Object> values = (List<Object>) source.get("source_field");
    if (values == null || values.isEmpty()) {
        return false;
    }
    for (Object localValue : values) {
        boolean result = true;
        for (String s : list) {
            result &= ((String) localValue).contains(s);
        }
        if (result) {
            return true;
        }
    }
    return false;
}

```

}

package test;

import org.elasticsearch.common.Nullable;  
import org.elasticsearch.common.component.AbstractComponent;  
import org.elasticsearch.common.inject.Inject;  
import org.elasticsearch.common.settings.Settings;  
import org.elasticsearch.node.Node;  
import org.elasticsearch.script.ExecutableScript;  
import org.elasticsearch.script.NativeScriptFactory;

import java.util.Map;

public class CooccurenceStoredScriptFactory extends AbstractComponent  
implements NativeScriptFactory{

```
private final Node node;

@SuppressWarnings("unchecked")
@Inject
public CooccurenceStoredScriptFactory(Node node, Settings settings) {
    super(settings);
    this.node = node;
}

@Override public ExecutableScript newScript (@Nullable 

```

Map\<String,Object\> params){  
return new CooccurenceStoredScript(node.client(), logger, params);  
}  
}

package test;

import org.elasticsearch.ElasticsearchIllegalArgumentException;  
import org.elasticsearch.client.Client;  
import org.elasticsearch.common.Nullable;  
import org.elasticsearch.common.logging.ESLogger;  
import org.elasticsearch.common.xcontent.support.XContentMapValues;  
import org.elasticsearch.script.AbstractSearchScript;  
import org.elasticsearch.search.lookup.FieldLookup;  
import org.elasticsearch.search.lookup.FieldsLookup;

import java.util.List;  
import java.util.Map;

public class CooccurenceStoredScript extends AbstractSearchScript {

```
private List<String> list = null;

@SuppressWarnings("unchecked")
public CooccurenceStoredScript(Client client, ESLogger logger, 

```

@Nullable Map\<String,Object\> params){  
Map\<String, Object\> map = params == null ? null :  
XContentMapValues.nodeMapValue(params.get("map"), null);  
if (map == null) {  
throw new ElasticsearchIllegalArgumentException("Missing the  
map parameter");  
}  
list = (List) map.get("list");  
if (list == null || list.isEmpty()) {  
throw new ElasticsearchIllegalArgumentException("Missing the  
list parameter or list is empty");  
}  
}

```
@Override
public java.lang.Object run() {
    FieldsLookup fields = fields();

    if (fields == null || !fields.containsKey("stored_field")) {
        return false;
    }
    FieldLookup field = ((FieldLookup) fields.get("stored_field"));
    if (field == null) {
        return false;
    }
    List<Object> values = field.getValues();
    if (values == null) {
        return false;
    }
    for (Object localValue : values) {
        boolean result = true;
        for (String s : list) {
            result &= ((String) localValue).contains(s);
        }
        if (result) {
            return true;
        }
    }
    return false;
}

```

}

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---

<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:18am UTC](https://discuss.elastic.co/t/problem-accessing-fields-from-a-native-script-during-percolation/18442/2 "2017-07-06T01:18:23Z")

</div>