Example usage for com.mongodb.util JSON serialize

Introduction

In this page you can find the example usage for com.mongodb.util JSON serialize.

Prototype

public static String serialize(final Object object) 

Source Link

Document

Serializes an object into its JSON form.

This method delegates serialization to JSONSerializers.getLegacy

Usage

From source file:org.bananaforscale.cormac.dao.gridfs.GridFsDataServiceImpl.java

License:Apache License

/**
 * Returns all the files in a bucket./*from ww  w . j  ava  2  s. c  om*/
 *
 * @param databaseName the database
 * @param bucketName the bucket
 * @return the files in the bucket
 * @throws DatasourceException
 * @throws NotFoundException
 */
@Override
public List<String> getAll(String databaseName, String bucketName)
        throws DatasourceException, NotFoundException {
    try {
        if (!databaseExists(databaseName)) {
            throw new NotFoundException("The database doesn't exist in the datasource");
        }
        if (!bucketExists(databaseName, bucketName)) {
            throw new NotFoundException("The bucket doesn't exist in the database");
        }
        DB mongoDatabase = mongoClient.getDB(databaseName);
        GridFS gfsBucket = new GridFS(mongoDatabase, bucketName);
        DBCursor cursor = gfsBucket.getFileList();
        Iterator<DBObject> curIter = cursor.iterator();
        List<String> fileList = new ArrayList<>();
        while (curIter.hasNext()) {
            DBObject current = curIter.next();
            fileList.add(JSON.serialize(current));
        }
        return fileList;
    } catch (MongoException ex) {
        logger.error("An error occured while retrieving file list", ex);
        throw new DatasourceException("An error occured while retrieving file list");
    }

}

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From source file:org.basex.modules.MongoDB.java

License:BSD License

/**
 * Convert collection result(DBCursor) into Item {@link Item} element.
 * @param result DBCursor/*from   w w w . j av  a 2s  . com*/
 * @return Item
 * @throws QueryException
 */
private Item cursorToItem(final Str handler, final DBCursor cursor) throws QueryException {
    if (cursor != null) {
        try {
            if (cursor.count() == 1) {
                Iterator<DBObject> row = cursor.iterator();
                return objectToItem(handler, row.next());
            } else {
                final Str json = Str.get(JSON.serialize(cursor));
                return returnResult(handler, json);
            }
        } catch (final Exception ex) {
            throw MongoDBErrors.generalExceptionError(ex);
        }
    } else {
        return null;
    }
}

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From source file:org.basex.modules.MongoDB.java

License:BSD License

/**
 * Convert collection DBObject into Item {@link Item} element.
 * @param object DBObject  (one row result)
 * @return Item//from  w  ww .  j  a  v a  2  s.co m
 * @throws QueryException
 */
private Item objectToItem(final Str handler, final DBObject object) throws QueryException {
    if (object != null) {
        try {
            final Str json = Str.get(JSON.serialize(object));
            return returnResult(handler, json);

        } catch (final Exception ex) {
            throw MongoDBErrors.generalExceptionError(ex);
        }
    } else {
        return null;
    }
}

---

From source file:org.basex.modules.MongoDB.java

License:BSD License

/**
 * This method is for aggregating with all pipeline options. All the options
 * should be given in sequence like: ('$group:{..}',...).
 * @param handler database handler//  w  w  w  .j  a va2s  .  co m
 * @param col collection name
 * @param first aggregation compulsary
 * @param additionalOps other pipeline options in sequence.
 * @return Item
 * @throws QueryException
 */
public Item aggregate(final Str handler, final Item col, final Item first, final Value additionalOps)
        throws Exception {
    final DB db = getDbHandler(handler);
    AggregationOutput agg;
    DBObject[] pipeline = null;
    if (additionalOps != null && (!additionalOps.isEmpty())) {
        if (additionalOps instanceof Map) {
            pipeline = mapToDBObjectArray((Map) additionalOps);
        } else {
            int length = (int) additionalOps.size();
            if (length > 0) {
                pipeline = new BasicDBObject[length];
                int i = 0;
                for (Item x : additionalOps) {
                    pipeline[i++] = getDbObjectFromStr(x);
                }
            } else {
                pipeline = null;
            }
        }
    }
    db.requestStart();
    try {
        if (additionalOps != null && (!additionalOps.isEmpty())) {
            agg = db.getCollection(itemToString(col)).aggregate(getDbObjectFromStr(first), pipeline);
        } else {
            agg = db.getCollection(itemToString(col)).aggregate(getDbObjectFromStr(first));
        }
        final Iterable<DBObject> d = agg.results();
        return returnResult(handler, Str.get(JSON.serialize(d)));
    } catch (MongoException e) {
        throw MongoDBErrors.generalExceptionError(e.getMessage());
    } finally {
        db.requestDone();
    }

}

---

From source file:org.basex.modules.MongoDB.java

License:BSD License

/**
 * Mongodb Mapreduce function with 3 parameters, Map, reduce and query Option.
 * @param handler Database Handler./*from w w w  .j  ava 2 s .c  om*/
 * @param col Collection name
 * @param map Map method
 * @param reduce Reduce Method
 * @param query Selection options.
 * @return Items.
 * @throws Exception
 */
public Item mapreduce(final Str handler, final Str col, final Str map, final Str reduce, final Item finalalize,
        final Item query, final Map options) throws Exception {
    final DB db = getDbHandler(handler);
    if (map == null) {
        throw MongoDBErrors.generalExceptionError("Map function cannot be empty in Mapreduce");
    }
    final DBObject q = query != null ? getDbObjectFromStr(query) : null;
    final DBCollection collection = db.getCollection(itemToString(col));
    String out = null;
    String outType = null;
    OutputType op = MapReduceCommand.OutputType.INLINE;
    if (options != null) {
        for (Item k : options.keys()) {
            String key = (String) k.toJava();
            if (key.equals("outputs")) {
                out = (String) options.get(k, null).toJava();
            }
            if (key.equals("outputype")) {
                outType = (String) options.get(k, null).toJava();
            }
        }
        if (out != null) {
            if (outType.toUpperCase().equals("REPLACE")) {
                op = MapReduceCommand.OutputType.REPLACE;
            } else if (outType.toUpperCase().equals("MERGE")) {
                op = MapReduceCommand.OutputType.MERGE;
            } else if (outType.toUpperCase().equals("REDUCE")) {
                op = MapReduceCommand.OutputType.REDUCE;
            }
        }
    }
    db.requestStart();
    try {
        MapReduceCommand cmd = new MapReduceCommand(collection, map.toJava(), reduce.toJava(), out, op, q);
        if (finalalize != null) {
            cmd.setFinalize((String) finalalize.toJava());
        }
        final MapReduceOutput outcmd = collection.mapReduce(cmd);
        return returnResult(handler, Str.get(JSON.serialize(outcmd.results())));
    } catch (MongoException e) {
        throw MongoDBErrors.generalExceptionError(e);
    } finally {
        db.requestDone();
    }
}

---

From source file:org.basex.modules.MongoDB.java

License:BSD License

/**
 * Mapreduce all functions in xquery's Map like :{"map":"function(){..}"
 * , "reduce":"function(){}"}.// w  w w . jav  a  2 s.co  m
 * @param handler
 * @param col collection name
 * @param options all options of Mapreduce including "map" in key.
 * @return
 * @throws Exception
 */
public Item mapreduce(final Str handler, final Str col, final Map options) throws Exception {
    if (options == null) {
        throw MongoDBErrors.generalExceptionError("Map optoins are empty");
    }
    final DB db = getDbHandler(handler);
    final DBCollection collection = db.getCollection(itemToString(col));
    String out = null;
    String outType = null;
    String map = null;
    String reduce = null;
    DBObject query = null;
    DBObject sort = null;
    int limit = 0;
    String finalalize = null;
    OutputType op = MapReduceCommand.OutputType.INLINE;
    for (Item k : options.keys()) {
        String key = (String) k.toJava();
        Value val = options.get(k, null);
        String value = (String) val.toJava();
        if (key.toLowerCase().equals("map")) {
            map = (String) value;
        } else if (key.toLowerCase().equals("reduce")) {
            reduce = value;
        } else if (key.toLowerCase().equals("outputs")) {
            out = value;
        } else if (key.toLowerCase().equals("outputype")) {
            outType = value;
        } else if (key.toLowerCase().equals("limit")) {
            if (val.type().instanceOf(SeqType.ITR_OM)) {
                long l = ((Item) val).itr(null);
                limit = (int) l;
            } else {
                throw MongoDBErrors.generalExceptionError(" Expected integer Value");
            }
        } else if (key.toLowerCase().equals(SORT)) {
            sort = getDbObjectFromStr(Str.get(value));
        } else if (key.toLowerCase().equals(QUERY)) {
            query = getDbObjectFromStr(Str.get(value));
        } else if (key.toLowerCase().equals(FINALIZE)) {
            finalalize = value;
        }
    }
    if (out != null && outType != null) {
        if (outType.toUpperCase().equals("REPLACE")) {
            op = MapReduceCommand.OutputType.REPLACE;
        } else if (outType.toUpperCase().equals("MERGE")) {
            op = MapReduceCommand.OutputType.MERGE;
        } else if (outType.toUpperCase().equals("REDUCE")) {
            op = MapReduceCommand.OutputType.REDUCE;
        }
    } else if (out != null) {
        op = MapReduceCommand.OutputType.REPLACE;
    }
    if (map == null) {
        throw MongoDBErrors.generalExceptionError("Map function cannot be empty");
    }
    db.requestStart();
    try {
        MapReduceCommand cmd = new MapReduceCommand(collection, map, reduce, out, op, query);
        if (finalalize != null) {
            cmd.setFinalize(finalalize);
        }
        if (limit != 0) {
            cmd.setLimit(limit);
        }
        if (sort != null) {
            cmd.setSort(sort);
        }
        final MapReduceOutput outcmd = collection.mapReduce(cmd);
        return returnResult(handler, Str.get(JSON.serialize(outcmd.results())));
    } catch (MongoException e) {
        throw MongoDBErrors.generalExceptionError(e);
    } finally {
        db.requestDone();
    }
}

---

From source file:org.basex.modules.nosql.MongoDB.java

License:BSD License

/**
 * Convert collection result(DBCursor) into Item {@link Item} element.
 * @param handler database handler/*w  w w.  j  av  a 2 s .c om*/
 * @param cursor DBcursor
 * @return Item
 * @throws QueryException query exception
 */
private Item cursorToItem(final Str handler, final DBCursor cursor) throws QueryException {
    if (cursor != null) {
        try {
            if (cursor.count() == 1) {
                Iterator<DBObject> row = cursor.iterator();
                return objectToItem(handler, row.next());
            }
            final Str json = Str.get(JSON.serialize(cursor));
            return returnResult(handler, json);
        } catch (final Exception ex) {
            throw MongoDBErrors.generalExceptionError(ex);
        }
    }
    return null;
}

---

From source file:org.basex.modules.nosql.MongoDB.java

License:BSD License

/**
 * Convert collection List<DBObject>  into Item {@link Item} element.
 * @param handler database handler/* w ww.  j  a  v  a 2 s  .c om*/
 * @param result DBcursor
 * @return Item
 * @throws QueryException query exception
 */
private Item cursorListToItem(final Str handler, final List<DBObject> result) throws QueryException {
    if (result != null) {
        try {
            final Str json = Str.get(JSON.serialize(result));
            return returnResult(handler, json);
        } catch (final Exception ex) {
            throw MongoDBErrors.generalExceptionError(ex);
        }
    }
    return null;
}

---

From source file:org.basex.modules.nosql.MongoDB.java

License:BSD License

/**
 * Convert collection DBObject into Item {@link Item} element.
 * @param handler databse handler//from  w  w  w. ja v  a 2s  .c  o  m
 * @param object DBObject  (one row result)
 * @return Item
 * @throws QueryException query exception
 */
private Item objectToItem(final Str handler, final DBObject object) throws QueryException {
    if (object != null) {
        try {
            final Str json = Str.get(JSON.serialize(object));
            return returnResult(handler, json);

        } catch (final Exception ex) {
            throw MongoDBErrors.generalExceptionError(ex);
        }
    }
    return null;
}

---

From source file:org.basex.modules.nosql.MongoDB.java

License:BSD License

/**
 * This method is for aggregating with all pipeline options. All the options
 * should be given in sequence like: ('$group:{..}',...).
 * @param handler database handler database handler
 * @param col collection name//from ww  w. ja  v a 2 s  .  c  om
 * @param first aggregation compulsary
 * @param additionalOps other pipeline options in sequence.
 * @return Item
 * @throws Exception exception
 */
public Item aggregate(final Str handler, final Item col, final Item first, final Value additionalOps)
        throws Exception {
    final DB db = getDbHandler(handler);
    AggregationOutput agg;
    DBObject[] pipeline = null;
    if (additionalOps != null && (!additionalOps.isEmpty())) {
        if (additionalOps instanceof Map) {
            pipeline = mapToDBObjectArray((Map) additionalOps);
        } else {
            int length = (int) additionalOps.size();
            if (length > 0) {
                pipeline = new BasicDBObject[length];
                int i = 0;
                for (Item x : additionalOps) {
                    pipeline[i++] = getDbObjectFromItem(x);
                }
            }
        }
    }
    db.requestStart();
    try {
        if (additionalOps != null && (!additionalOps.isEmpty())) {
            agg = db.getCollection(itemToString(col)).aggregate(getDbObjectFromItem(first), pipeline);
        } else {
            agg = db.getCollection(itemToString(col)).aggregate(getDbObjectFromItem(first));
        }
        final Iterable<DBObject> d = agg.results();
        return returnResult(handler, Str.get(JSON.serialize(d)));
    } catch (MongoException e) {
        throw MongoDBErrors.generalExceptionError(e.getMessage());
    } finally {
        db.requestDone();
    }

}

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