com.bluedragon.mongo.MongoCollectionCount.java Source code

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

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/* 
 *  Copyright (C) 2000 - 2015 TagServlet 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 org.bson.Document;

import com.mongodb.MongoException;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import com.naryx.tagfusion.cfm.engine.cfArgStructData;
import com.naryx.tagfusion.cfm.engine.cfData;
import com.naryx.tagfusion.cfm.engine.cfNumberData;
import com.naryx.tagfusion.cfm.engine.cfSession;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;

public class MongoCollectionCount extends MongoDatabaseList {
    private static final long serialVersionUID = 1L;

    public MongoCollectionCount() {
        min = 2;
        max = 3;
        setNamedParams(new String[] { "datasource", "collection", "query" });
    }

    public String[] getParamInfo() {
        return new String[] { "datasource name.  Name previously created using MongoRegister", "collection name",
                "Query to narrow your count to.  Can be a structure of elements, or a raw string that will be passed to Mongo" };
    }

    public java.util.Map<String, String> getInfo() {
        return makeInfo("mongo",
                "Counts the number of documents in a collection, filtering with the optional query",
                ReturnType.NUMERIC);
    }

    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 queryData = getNamedParam(argStruct, "query", null);

        try {
            Document qry = null;
            int count = 0;
            long start = System.currentTimeMillis();
            MongoCollection<Document> col = db.getCollection(collection);

            if (queryData != null) {
                qry = getDocument(queryData);
                count = (int) col.count(qry);
            } else
                count = (int) col.count();

            _session.getDebugRecorder().execMongo(col, "count", qry, System.currentTimeMillis() - start);

            return new cfNumberData(count);

        } catch (MongoException me) {
            throwException(_session, me.getMessage());
            return null;
        }
    }
}