Android Open Source - couchbase-lite-android Test14_ Reduce View

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License

The source code is released under:

Apache License

Java Source Code

package com.couchbase.lite.performance2;
/*from  www.  j a v  a2 s  .com*/
import com.couchbase.lite.CouchbaseLiteException;
import com.couchbase.lite.Document;
import com.couchbase.lite.Emitter;
import com.couchbase.lite.LitePerfTestCase;
import com.couchbase.lite.LiteTestCase;
import com.couchbase.lite.Mapper;
import com.couchbase.lite.Query;
import com.couchbase.lite.QueryEnumerator;
import com.couchbase.lite.QueryRow;
import com.couchbase.lite.Reducer;
import com.couchbase.lite.Status;
import com.couchbase.lite.TransactionalTask;
import com.couchbase.lite.View;
import com.couchbase.lite.internal.Body;
import com.couchbase.lite.internal.RevisionInternal;
import com.couchbase.lite.util.Log;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Test14_ReduceView extends LitePerfTestCase {

    public static final String TAG = "Test14_ReduceView";
    private static final String _propertyValue = "1";

    public double runOne(final int numberOfDocuments, final int sizeOfDocuments) throws Exception {
        final StringBuffer bigObj = new StringBuffer(sizeOfDocuments);
        for (int i = 0; i < sizeOfDocuments; i++) {
            bigObj.append(_propertyValue);
        }

        View view = database.getView("vacant");
        view.setMapReduce(
                new Mapper() {
                    public void map(Map<String, Object> document, Emitter emitter) {
                        Boolean vacant = (Boolean) document.get("vacant");
                        String name = (String) document.get("name");
                        if (vacant && name != null) {
                            emitter.emit(name, vacant);
                        }
                    }
                },
                new Reducer() {
                    public Object reduce(List<Object> keys, List<Object> values, boolean rereduce) {
                        return View.totalValues(values);
                    }
                },
                "1.0.0"
        );

        boolean success = database.runInTransaction(new TransactionalTask() {

            public boolean run() {
                for (int i = 0; i < numberOfDocuments; i++) {
                    String name = String.format("%s",bigObj);
                    boolean vacant = ((i + 2) % 2 == 0) ? true : false;
                    Map<String,Object> props = new HashMap<String,Object>();

                    props.put("name",name);
                    props.put("apt",i);
                    props.put("phone",408100000 + i);
                    props.put("vacant",vacant);

                    Document doc = database.createDocument();
                    try {
                        doc.putProperties(props);
                    }
                    catch(CouchbaseLiteException cblex)
                    {
                        Log.v("PerformanceStats",TAG+", Failed to create doc "+props,cblex);
                        return false;
                    }
                }
                return true;
            }
        });

        long startMillis = System.currentTimeMillis();

        Query query = database.getView("vacant").createQuery();
        query.setMapOnly(false);
        QueryEnumerator rowEnum = query.run();
        QueryRow row = rowEnum.getRow(0);

        double executionTime = Long.valueOf(System.currentTimeMillis()-startMillis);
        Log.v("PerformanceStats",TAG+","+executionTime+","+numberOfDocuments+","+sizeOfDocuments);
        return executionTime;
    }
}

Java Source Code List

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