Elasticsearch Implementing a custom sort plug-in

Plug-in entry:

Package ttd.ugc.plugin;

Import Org.elasticsearch.plugins.Plugin;
Import Org.elasticsearch.script.ScriptModule;

/**
* Created by Jin_h on 2017/1/9.
*/
public class Nativescriptplugin  extends Plugin {
    @Override
    Public String name () {
        return "Comment-default-sort";
    }

    @Override
    Public String description () {
        return "Comment-default-sort";
    }

    public void Onmodule (Scriptmodule module) {
        Comment-default-sort name of the sorting algorithm
        Module.registerscript ("Comment-default-sort", Commentdefaultsortscriptfactory.class);
    }
}


Plug-in specific implementations:

Package ttd.ugc.plugin;

Import org.elasticsearch.common.Nullable;
Import org.elasticsearch.index.fielddata.ScriptDocValues;
Import Org.elasticsearch.script.AbstractDoubleSearchScript;
Import Org.elasticsearch.script.AbstractLongSearchScript;
Import Org.elasticsearch.script.ExecutableScript;
Import Org.elasticsearch.script.NativeScriptFactory;
Import Org.elasticsearch.search.lookup.LeafDocLookup;

Import java.text.ParseException;
Import Java.text.SimpleDateFormat;
Import Java.util.Date;
Import Java.util.Map;

/**
* Created by Jin_h on 2017/1/9.
*/
public class Commentdefaultsortscriptfactory implements Nativescriptfactory {
@Override
Public Executablescript Newscript (@Nullable map<string, object> Map) {
return new Customscript (map);
}

@Override
public Boolean needsscores () {
return false;
}

Protected class Customscript extends Abstractdoublesearchscript {

The params is sequenced by an externally-passed parameter method.
Public Customscript (@Nullable map<string,object> params) {

}

@Override
Public double runasdouble () {
Three ways to get documents.
((scriptdocvalues.longs) Doc (). Get ("Wordnumber")). GetValue ()
(int) source (). Get ("Wordnumber");
This.docfieldlongs ("Wordnumber");
Double Wordnumber;
Double commenttime;
Double usedate;
Double numpicture;
Double FeedBack;
try {
SimpleDateFormat SDF = new SimpleDateFormat ("Yyyy-mm-dd");
String today = Sdf.format (New Date ());
if (source (). Get ("wordnumber") = = null) {
Wordnumber = 0;
} else {
Wordnumber = (int) source (). Get ("Wordnumber");
if (wordnumber >= 100) {
Wordnumber = 1;
} else if (Wordnumber >= 70) {
Wordnumber = 0.9;
} else if (Wordnumber >= 60) {
Wordnumber = 0.8;
} else if (Wordnumber >= 50) {
Wordnumber = 0.7;
} else if (Wordnumber >= 40) {
Wordnumber = 0.6;
} else if (Wordnumber >= 30) {
Wordnumber = 0.5;
} else if (Wordnumber >= 20) {
Wordnumber = 0.4;
} else if (Wordnumber >= 10) {
Wordnumber = 0.3;
} else if (Wordnumber >= 5) {
Wordnumber = 0.2;
} else if (Wordnumber >= 1) {
Wordnumber = 0.1;
} else {
Wordnumber = 0;
}
}
if (source (). Get ("imgcount") = = null) {
numpicture = 0;
} else {
Numpicture = (int) source (). Get ("Imgcount");
if (numpicture >= 10) {
Numpicture = 1;
} else if (numpicture >= 9) {
Numpicture = 0.9;
} else if (Numpicture >= 8) {
Numpicture = 0.8;
} else if (numpicture >= 7) {
Numpicture = 0.7;
} else if (numpicture >= 6) {
Numpicture = 0.6;
} else if (Numpicture >= 5) {
Numpicture = 0.5;
} else if (Numpicture >= 4) {
Numpicture = 0.4;
} else if (Numpicture >= 3) {
Numpicture = 0.3;
} else if (Numpicture >= 2) {
Numpicture = 0.2;
} else if (numpicture >= 1) {
Numpicture = 0.1;
} else {
numpicture = 0;
}
}
if (source (). Get ("useful") = = null) {
FeedBack = 0;
} else {
FeedBack = (int) source (). Get ("useful");
if (FeedBack >= 10) {
FeedBack = 1;
} else if (FeedBack >= 9) {
FeedBack = 0.9;
} else if (FeedBack >= 8) {
FeedBack = 0.8;
} else if (FeedBack >= 7) {
FeedBack = 0.7;
} else if (FeedBack >= 6) {
FeedBack = 0.6;
} else if (FeedBack >= 5) {
FeedBack = 0.5;
} else if (FeedBack >= 4) {
FeedBack = 0.4;
} else if (FeedBack >= 3) {
FeedBack = 0.3;
} else if (FeedBack >= 2) {
FeedBack = 0.2;
} else if (FeedBack >= 1) {
FeedBack = 0.1;
} else {
FeedBack = 0;
}
}
Commenttime =source (). Get ("Cmtdate") ==null?-1: (Sdf.parse (today). GetTime ()-Sdf.parse (source (). Get ("Cmtdate"). ToString ()). GetTime ())/(24*60*60*1000);
if (Commenttime >= 620) {
Commenttime = 0.1;
} else if (Commenttime >= 360) {
Commenttime = 0.2;
} else if (commenttime >= 180) {
Commenttime = 0.3;
} else if (Commenttime >= 120) {
Commenttime = 0.4;
} else if (Commenttime >= 90) {
Commenttime = 0.5;
} else if (Commenttime >= 60) {
Commenttime = 0.6;
} else if (Commenttime >= 30) {
Commenttime = 0.7;
} else if (Commenttime >= 14) {
Commenttime = 0.8;
} else if (Commenttime >= 7) {
Commenttime = 0.9;
} else if (commenttime >= 0) {
Commenttime = 1;
} else {
Commenttime = 0;
}
Usedate =source (). Get ("Usedate") ==null?-1: (Sdf.parse (today). GetTime ()-Sdf.parse (source (). Get ("Usedate"). ToString ()). GetTime ())/(24*60*60*1000);
if (usedate >= 620) {
Usedate = 0.1;
} else if (usedate >= 360) {
Usedate = 0.2;
} else if (usedate >= 180) {
Usedate = 0.3;
} else if (usedate >= 120) {
Usedate = 0.4;
} else if (Usedate >= 90) {
Usedate = 0.5;
} else if (usedate >= 60) {
Usedate = 0.6;
} else if (usedate >= 30) {
Usedate = 0.7;
} else if (usedate >= 14) {
Usedate = 0.8;
} else if (usedate >= 7) {
Usedate = 0.9;
} else if (usedate >= 0) {
Usedate = 1;
} else {
usedate = 0;
}
Double iw_wordnumber = 0.3;
Double iw2_commenttime = 0.2;
Double iw3_usedate = 0.2;
Double iw4_numpicture = 0.15;
Double iw5_feedback = 0.15;
Double SUMW = iw_wordnumber + iw2_commenttime + iw3_usedate + iw4_numpicture + iw5_feedback;
Double Sumscore = wordnumber * iw_wordnumber + commenttime * iw2_commenttime + usedate * iw3_usedate + numPicture * iw4_nu Mpicture + feedBack * iw5_feedback;
return (SUMSCORE/SUMW);
}catch (Exception ex) {
Ex.printstacktrace ();
Return-1;//this.docfieldlongs ("Wordnumber"). GetValue ();
}
}
}
}

Elasticsearch Implementing a custom sort plug-in