org.eclipse.birt.data.oda.mongodb.internal.impl.DriverUtil.java Source code

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Here is the source code for org.eclipse.birt.data.oda.mongodb.internal.impl.DriverUtil.java

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/*
 *************************************************************************
 * Copyright (c) 2013 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation - initial API and implementation
 *  
 *************************************************************************
 */

package org.eclipse.birt.data.oda.mongodb.internal.impl;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.eclipse.birt.data.oda.mongodb.impl.MongoDBDriver;
import org.eclipse.birt.data.oda.mongodb.nls.Messages;
import org.eclipse.datatools.connectivity.oda.OdaException;

import com.mongodb.DBObject;
import com.mongodb.util.JSON;
import com.mongodb.util.JSONParseException;

/**
 * Internal constant variables and utilities.
 */
public final class DriverUtil {
    public static final String EMPTY_STRING = ""; //$NON-NLS-1$

    // trace logging
    private static Logger sm_logger = Logger.getLogger(MongoDBDriver.ODA_DATA_SOURCE_ID);

    public static Logger getLogger() {
        return sm_logger;
    }

    static Object parseJSONExpr(String jsonExpr) throws OdaException {
        try {
            return JSON.parse(jsonExpr);
        } catch (JSONParseException ex) {
            String errMsg = Messages.bind(Messages.driverUtil_parsingError, jsonExpr);
            DriverUtil.getLogger().log(Level.INFO, errMsg, ex); // caller may choose to ignore it; log at INFO level

            OdaException newEx = new OdaException(errMsg);
            newEx.initCause(ex);
            throw newEx;
        }
    }

    static DBObject parseExprToDBObject(String jsonExpr) throws OdaException {
        Object parsedObj = parseJSONExpr(jsonExpr);
        if (parsedObj instanceof DBObject)
            return (DBObject) parsedObj;
        throw new OdaException(
                Messages.bind(Messages.driverUtil_invalidExpr, parsedObj.getClass().getSimpleName()));
    }

}