com.bluedragon.mongo.MongoCollectionAggregate.java Source code

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Here is the source code for com.bluedragon.mongo.MongoCollectionAggregate.java

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/* 
 *  Copyright (C) 2000 - 2015 aw2.0 Ltd
 *
 *  This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
 *  
 *  OpenBD is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  Free Software Foundation,version 3.
 *  
 *  OpenBD is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with OpenBD.  If not, see http://www.gnu.org/licenses/
 *  
 *  Additional permission under GNU GPL version 3 section 7
 *  
 *  If you modify this Program, or any covered work, by linking or combining 
 *  it with any of the JARS listed in the README.txt (or a modified version of 
 *  (that library), containing parts covered by the terms of that JAR, the 
 *  licensors of this Program grant you additional permission to convey the 
 *  resulting work. 
 *  README.txt @ http://www.openbluedragon.org/license/README.txt
 *  
 *  http://openbd.org/
 */
package com.bluedragon.mongo;

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

import org.bson.Document;
import org.bson.conversions.Bson;

import com.mongodb.Block;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import com.naryx.tagfusion.cfm.engine.cfArgStructData;
import com.naryx.tagfusion.cfm.engine.cfArrayData;
import com.naryx.tagfusion.cfm.engine.cfData;
import com.naryx.tagfusion.cfm.engine.cfSession;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;
import com.naryx.tagfusion.cfm.tag.tagUtils;

public class MongoCollectionAggregate extends MongoCollectionInsert {
    private static final long serialVersionUID = 1L;

    public MongoCollectionAggregate() {
        min = 3;
        max = 3;
        setNamedParams(new String[] { "datasource", "collection", "pipeline" });
    }

    public String[] getParamInfo() {
        return new String[] { "datasource name.  Name previously created using MongoRegister", "collection name",
                "an array or single document of pipeline operations" };
    }

    public java.util.Map<String, String> getInfo() {
        return makeInfo("mongo", "Performs an aggregated function against the given collection", ReturnType.ARRAY);
    }

    public cfData execute(cfSession _session, cfArgStructData argStruct) throws cfmRunTimeException {
        MongoDatabase db = getMongoDatabase(_session, argStruct);

        String collection = getNamedStringParam(argStruct, "collection", null);
        if (collection == null)
            throwException(_session, "please specify a collection");

        cfData data = getNamedParam(argStruct, "pipeline", null);
        if (data == null)
            throwException(_session, "please specify a pipeline");

        List<Bson> pipelineList = new ArrayList<Bson>();

        if (data.getDataType() == cfData.CFARRAYDATA) {
            cfArrayData arrData = (cfArrayData) data;

            if (arrData.size() == 0)
                throwException(_session, "please specify at least one pipeline");

            for (int x = 0; x < arrData.size(); x++)
                pipelineList.add(getDocument(arrData.getData(x + 1)));

        } else {
            pipelineList.add(getDocument(data));
        }

        try {
            MongoCollection<Document> col = db.getCollection(collection);
            long start = System.currentTimeMillis();

            // Now we can run the query
            cfArrayData results = cfArrayData.createArray(1);

            col.aggregate(pipelineList).forEach(new Block<Document>() {

                @SuppressWarnings("rawtypes")
                @Override
                public void apply(Document doc) {
                    try {
                        results.addElement(tagUtils.convertToCfData((Map) doc));
                    } catch (cfmRunTimeException e) {
                    }
                }

            });

            _session.getDebugRecorder().execMongo(col, "aggregate", null, System.currentTimeMillis() - start);

            return results;
        } catch (Exception e) {
            throwException(_session, e.getMessage());
            return null;
        }
    }
}