Example usage for com.mongodb DBCollection findOne

Introduction

In this page you can find the example usage for com.mongodb DBCollection findOne.

Prototype

@Nullable
public DBObject findOne(final Object id) 

Source Link

Document

Get a single document from collection by '_id'.

Usage

From source file:nl.knaw.huygens.timbuctoo.storage.mongo.MongoStorage.java

License:Open Source License

private <T extends Entity> void addVersion(Class<T> type, String id, JsonNode tree) throws StorageException {
    DBCollection collection = getVersionCollection(type);
    DBObject query = queries.selectById(id);

    if (collection.findOne(query) == null) {
        ObjectNode node = objectMapper.createObjectNode();
        node.put("_id", id);
        node.put("versions", objectMapper.createArrayNode());
        mongoDB.insert(collection, id, toDBObject(node));
    }/*from   w  ww.j  a v a2s.  c o  m*/

    ObjectNode versionNode = objectMapper.createObjectNode();
    versionNode.put("versions", tree);
    ObjectNode update = objectMapper.createObjectNode();
    update.put("$push", versionNode);
    mongoDB.update(collection, query, toDBObject(update));
}

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From source file:org.alfresco.extension.wcmdeployment.mongodb.MongoDbDeploymentTarget.java

License:Open Source License

private DBObject findByPath(final DBCollection collection, final String path) {
    DBObject result = null;/*  w  w w  .  jav a  2  s .c om*/

    if (collection != null && path != null) {
        DBObject pathQuery = new BasicDBObject();

        collection.ensureIndex("path"); // Make sure we index path, so that listings are efficient
        pathQuery.put("path", path);
        result = collection.findOne(pathQuery);
    }

    return (result);
}

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From source file:org.alfresco.extension.wcmdeployment.mongodb.MongoDbDeploymentTarget.java

License:Open Source License

private DBObject findVersionDoc(final DB database) {
    DBObject result = null;/*from  w w w .ja va 2s.  c om*/

    if (database != null) {
        DBCollection collection = database.getCollection("deploymentSystem");
        result = collection.findOne("version");
    }

    return (result);
}

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From source file:org.apache.camel.component.gridfs.GridFsConsumer.java

License:Apache License

@Override
public void run() {
    DBCursor c = null;//from w w w.j  ava 2s .  c  om
    java.util.Date fromDate = null;

    QueryStrategy s = endpoint.getQueryStrategy();
    boolean usesTimestamp = (s != QueryStrategy.FileAttribute);
    boolean persistsTimestamp = (s == QueryStrategy.PersistentTimestamp
            || s == QueryStrategy.PersistentTimestampAndFileAttribute);
    boolean usesAttribute = (s == QueryStrategy.FileAttribute || s == QueryStrategy.TimeStampAndFileAttribute
            || s == QueryStrategy.PersistentTimestampAndFileAttribute);

    DBCollection ptsCollection = null;
    DBObject persistentTimestamp = null;
    if (persistsTimestamp) {
        ptsCollection = endpoint.getDB().getCollection(endpoint.getPersistentTSCollection());
        // ensure standard indexes as long as collections are small
        try {
            if (ptsCollection.count() < 1000) {
                ptsCollection.createIndex(new BasicDBObject("id", 1));
            }
        } catch (MongoException e) {
            //TODO: Logging
        }
        persistentTimestamp = ptsCollection.findOne(new BasicDBObject("id", endpoint.getPersistentTSObject()));
        if (persistentTimestamp == null) {
            persistentTimestamp = new BasicDBObject("id", endpoint.getPersistentTSObject());
            fromDate = new java.util.Date();
            persistentTimestamp.put("timestamp", fromDate);
            ptsCollection.save(persistentTimestamp);
        }
        fromDate = (java.util.Date) persistentTimestamp.get("timestamp");
    } else if (usesTimestamp) {
        fromDate = new java.util.Date();
    }
    try {
        Thread.sleep(endpoint.getInitialDelay());
        while (isStarted()) {
            if (c == null || c.getCursorId() == 0) {
                if (c != null) {
                    c.close();
                }
                String queryString = endpoint.getQuery();
                DBObject query;
                if (queryString == null) {
                    query = new BasicDBObject();
                } else {
                    query = (DBObject) JSON.parse(queryString);
                }
                if (usesTimestamp) {
                    query.put("uploadDate", new BasicDBObject("$gt", fromDate));
                }
                if (usesAttribute) {
                    query.put(endpoint.getFileAttributeName(), null);
                }
                c = endpoint.getFilesCollection().find(query);
            }
            boolean dateModified = false;
            while (c.hasNext() && isStarted()) {
                GridFSDBFile file = (GridFSDBFile) c.next();
                GridFSDBFile forig = file;
                if (usesAttribute) {
                    file.put(endpoint.getFileAttributeName(), "processing");
                    DBObject q = BasicDBObjectBuilder.start("_id", file.getId()).append("camel-processed", null)
                            .get();
                    forig = (GridFSDBFile) endpoint.getFilesCollection().findAndModify(q, null, null, false,
                            file, true, false);
                }
                if (forig != null) {
                    file = endpoint.getGridFs().findOne(new BasicDBObject("_id", file.getId()));

                    Exchange exchange = endpoint.createExchange();
                    exchange.getIn().setHeader(GridFsEndpoint.GRIDFS_METADATA,
                            JSON.serialize(file.getMetaData()));
                    exchange.getIn().setHeader(Exchange.FILE_CONTENT_TYPE, file.getContentType());
                    exchange.getIn().setHeader(Exchange.FILE_LENGTH, file.getLength());
                    exchange.getIn().setHeader(Exchange.FILE_LAST_MODIFIED, file.getUploadDate());
                    exchange.getIn().setBody(file.getInputStream(), InputStream.class);
                    try {
                        getProcessor().process(exchange);
                        //System.out.println("Processing " + file.getFilename());
                        if (usesAttribute) {
                            forig.put(endpoint.getFileAttributeName(), "done");
                            endpoint.getFilesCollection().save(forig);
                        }
                        if (usesTimestamp) {
                            if (file.getUploadDate().compareTo(fromDate) > 0) {
                                fromDate = file.getUploadDate();
                                dateModified = true;
                            }
                        }
                    } catch (Exception e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }
            if (persistsTimestamp && dateModified) {
                persistentTimestamp.put("timestamp", fromDate);
                ptsCollection.save(persistentTimestamp);
            }
            Thread.sleep(endpoint.getDelay());
        }
    } catch (Throwable e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    if (c != null) {
        c.close();
    }
}

---

From source file:org.apache.camel.component.mongodb.MongoDbProducer.java

License:Apache License

protected void doFindById(Exchange exchange) throws Exception {
    DBCollection dbCol = calculateCollection(exchange);
    Object o = exchange.getIn().getMandatoryBody();
    DBObject ret;//from w  w w .jav  a2  s . c  o  m

    DBObject fieldFilter = exchange.getIn().getHeader(MongoDbConstants.FIELDS_FILTER, DBObject.class);
    if (fieldFilter == null) {
        ret = dbCol.findOne(o);
    } else {
        ret = dbCol.findOne(o, fieldFilter);
    }

    Message resultMessage = prepareResponseMessage(exchange, MongoDbOperation.save);
    resultMessage.setBody(ret);
    resultMessage.setHeader(MongoDbConstants.RESULT_TOTAL_SIZE, ret == null ? 0 : 1);
}

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From source file:org.apache.camel.component.mongodb.MongoDbProducer.java

License:Apache License

protected void doFindOneByQuery(Exchange exchange) throws Exception {
    DBCollection dbCol = calculateCollection(exchange);
    DBObject o = exchange.getIn().getMandatoryBody(DBObject.class);
    DBObject ret;//  ww w .  ja  v a2  s .c  om

    DBObject fieldFilter = exchange.getIn().getHeader(MongoDbConstants.FIELDS_FILTER, DBObject.class);
    if (fieldFilter == null) {
        ret = dbCol.findOne(o);
    } else {
        ret = dbCol.findOne(o, fieldFilter);
    }

    Message resultMessage = prepareResponseMessage(exchange, MongoDbOperation.findOneByQuery);
    resultMessage.setBody(ret);
    resultMessage.setHeader(MongoDbConstants.RESULT_TOTAL_SIZE, ret == null ? 0 : 1);
}

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From source file:org.apache.chemistry.opencmis.mongodb.MongodbUtils.java

License:Apache License

public void moveNode(BasicDBObject node, BasicDBObject newParent, DBCollection collection) {

    // Get the left and right values
    Long originalLeft = node.getLong("left");
    Long originalRight = node.getLong("right");
    Long subtreeWidth = originalRight - originalLeft;

    // Compute the new left and right values for the nodeToMove
    Long newLeft = newParent.getLong("right");
    Long newRight = newParent.getLong("right") + subtreeWidth;

    // Make space for the new subtree under the new parent
    collection.update(// w ww .j a va 2  s . c o m
            new BasicDBObject().append("right", new BasicDBObject().append("$gte", newParent.get("right"))),
            new BasicDBObject().append("$inc", new BasicDBObject().append("right", subtreeWidth + 1)), false,
            true);

    collection.update(
            new BasicDBObject().append("left", new BasicDBObject().append("$gte", newParent.get("right"))),
            new BasicDBObject().append("$inc", new BasicDBObject().append("left", subtreeWidth + 1)), false,
            true);

    // Re-fetch the node to move, since the left and right values may have changed
    node = (BasicDBObject) collection.findOne(new BasicDBObject().append("_id", node.get("_id")));

    Long difference = node.getLong("left") - newLeft;
    // Move the old subtree into a new location
    collection.update(
            new BasicDBObject().append("left", new BasicDBObject().append("$gte", node.getLong("left")))
                    .append("right", new BasicDBObject().append("$lte", node.getLong("right"))),
            new BasicDBObject().append("$inc",
                    new BasicDBObject().append("left", 0 - difference).append("right", 0 - difference)),
            false, true);

    // Remove empty space from the parent
    //db.test.update({left:nodeToMove.left-1, right:nodeToMove.right+1}, {right:nodeToMove.left});
    collection.update(new BasicDBObject().append("right", new BasicDBObject().append("$gte", node.get("left"))),
            new BasicDBObject().append("$inc", new BasicDBObject().append("right", 0 - subtreeWidth - 1)),
            false, true);
    collection.update(new BasicDBObject().append("left", new BasicDBObject().append("$gte", node.get("left"))),
            new BasicDBObject().append("$inc", new BasicDBObject().append("left", 0 - subtreeWidth - 1)), false,
            true);
}

---

From source file:org.apache.chemistry.opencmis.mongodb.MongodbUtils.java

License:Apache License

public BasicDBObject getNodeByPath(String path, DBCollection collection) {

    String[] pathSplit = path.split(PATH_SEPARATOR);
    int pathDepth = pathSplit.length - 1;

    DBCursor candidates = collection// w w w .  jav a2  s . c o  m
            .find(new BasicDBObject().append("title", pathSplit[pathDepth]).append("level", "pathDepth"));

    // if number of candidates is one, then we have found our content item - return it
    if (candidates.size() == 1) {
        return (BasicDBObject) candidates.next();
    }
    // if number of candidates is greater than the path depth, then just follow the depth instead

    if (candidates.size() >= pathSplit.length) {
        int currentLevel = 1;
        DBObject currentNode = collection.findOne(new BasicDBObject().append("title", "root"));

        while (currentLevel <= pathDepth && currentNode != null) {
            currentNode = collection.findOne(
                    new BasicDBObject().append("left", new BasicDBObject("$gt", currentNode.get("left")))
                            .append("right", new BasicDBObject("$gt", currentNode.get("right")))
                            .append("title", pathSplit[currentLevel]).append("level", currentLevel));
            currentLevel++;
        }
        return (BasicDBObject) currentNode;
    } else {
        int pathLevel = pathDepth - 1;
        DBObject candidate = null;

        while (candidates.hasNext() && pathLevel > 0) {
            candidate = candidates.next();
            DBCursor ancestors = collection
                    .find(new BasicDBObject("left", new BasicDBObject().append("$lt", candidate.get("left")))
                            .append("right", new BasicDBObject().append("$gt", candidate.get("right"))))
                    .sort(new BasicDBObject("left", 1));

            DBObject ancestor = ancestors.next();
            while (ancestor != null && ancestor.get("title").equals(pathSplit[pathLevel]) && pathLevel > -1) {
                ancestor = ancestors.next();
                pathLevel--;
            }
        }
        return (BasicDBObject) candidate;
    }
}

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From source file:org.apache.isis.objectstore.nosql.db.mongo.MongoClientCommandContext.java

License:Apache License

@Override
public void delete(final ObjectSpecId objectSpecId, final String mongoId, final String version, final Oid oid) {
    final DBCollection instances = db.getCollection(objectSpecId.asString());
    final DBObject object = instances.findOne(mongoId);
    if (!object.get(PropertyNames.VERSION).equals(version)) {
        throw new ConcurrencyException("Could not delete object of different version", oid);
    }/*from  w ww  .j a  v a 2  s.  c om*/
    instances.remove(object);
    LOG.info("removed " + oid);
}

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From source file:org.apache.isis.objectstore.nosql.db.mongo.MongoDb.java

License:Apache License

@Override
public String getService(final ObjectSpecId objectSpecId) {
    final DBCollection services = db.getCollection("services");
    final DBObject object = services.findOne(new BasicDBObject().append("name", objectSpecId.asString()));
    if (object == null) {
        return null;
    } else {/* www.  j  a v  a  2 s.c  om*/
        final String id = (String) object.get("key");
        LOG.info("service found " + objectSpecId + ":" + id);
        return id;
    }
}

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