Example usage for com.mongodb DBRef getId

Introduction

In this page you can find the example usage for com.mongodb DBRef getId.

Prototype

public Object getId() 

Source Link

Document

Gets the _id of the referenced document

Usage

From source file:org.mongojack.JacksonDBCollection.java

License:Apache License

/**
 * Fetch a collection of dbrefs.  This is more efficient than fetching one at a time.
 *
 * @param collection the collection to fetch
 * @param fields     The fields to retrieve for each of the documents
 * @return The collection of referenced objcets
 *//*from  w  w  w  .  j a v  a2  s.c o  m*/
public <R, RK> List<R> fetch(Collection<org.mongojack.DBRef<R, RK>> collection, DBObject fields) {
    Map<JacksonCollectionKey, List<Object>> collectionsToIds = new HashMap<JacksonCollectionKey, List<Object>>();
    for (org.mongojack.DBRef<R, RK> ref : collection) {
        if (ref instanceof FetchableDBRef) {
            JacksonCollectionKey key = ((FetchableDBRef) ref).getCollectionKey();
            List<Object> ids = collectionsToIds.get(key);
            if (ids == null) {
                ids = new ArrayList<Object>();
                collectionsToIds.put(key, ids);
            }
            ids.add(getReferenceCollection(key).convertToDbId(ref.getId()));
        }
    }
    List<R> results = new ArrayList<R>();
    for (Map.Entry<JacksonCollectionKey, List<Object>> entry : collectionsToIds.entrySet()) {
        for (R result : this.<R, RK>getReferenceCollection(entry.getKey())
                .find(new QueryBuilder().put("_id").in(entry.getValue()).get(), fields)) {
            results.add(result);
        }
    }
    return results;
}

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From source file:org.springframework.data.mongodb.core.convert.CustomMappingMongoConverter.java

@SuppressWarnings("unchecked")
private <T> T potentiallyReadOrResolveDbRef(DBRef dbref, TypeInformation<?> type, ObjectPath path,
        Class<?> rawType) {
    if (rawType.equals(DBRef.class)) {
        return (T) dbref;
    }/*from w ww.java2  s.c o  m*/
    Object object = dbref == null ? null : path.getPathItem(dbref.getId(), dbref.getCollectionName());
    //CHANGE STARTS
    if (object != null) {
        return (T) object;
    } else {
        return readAndConvertDBRef(dbref, type, path, rawType);
    }
    //CHANGE ENDS
}

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From source file:org.springframework.data.mongodb.core.convert.DefaultDbRefProxyHandler.java

License:Apache License

@Override
public Object populateId(MongoPersistentProperty property, DBRef source, Object proxy) {

    if (source == null) {
        return proxy;
    }/*from w w w  . j a  v a 2 s  .  com*/

    MongoPersistentEntity<?> entity = mappingContext.getPersistentEntity(property);
    MongoPersistentProperty idProperty = entity.getIdProperty();

    if (idProperty.usePropertyAccess()) {
        return proxy;
    }

    SpELExpressionEvaluator evaluator = new DefaultSpELExpressionEvaluator(proxy, spELContext);
    PersistentPropertyAccessor accessor = entity.getPropertyAccessor(proxy);

    DBObject object = new BasicDBObject(idProperty.getFieldName(), source.getId());
    ObjectPath objectPath = ObjectPath.ROOT.push(proxy, entity, null);
    accessor.setProperty(idProperty, resolver.getValueInternal(idProperty, object, evaluator, objectPath));

    return proxy;
}

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From source file:org.springframework.data.mongodb.core.convert.MappingMongoConverter.java

License:Apache License

@SuppressWarnings("unchecked")
private <T> T potentiallyReadOrResolveDbRef(DBRef dbref, TypeInformation<?> type, ObjectPath path,
        Class<?> rawType) {

    if (rawType.equals(DBRef.class)) {
        return (T) dbref;
    }//from   ww w  . ja  v  a  2 s. c  o m

    Object object = dbref == null ? null : path.getPathItem(dbref.getId(), dbref.getCollectionName());
    return (T) (object != null ? object : readAndConvertDBRef(dbref, type, path, rawType));
}

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From source file:org.springframework.data.mongodb.core.convert.QueryMapper.java

License:Apache License

/**
 * Converts the given source assuming it's actually an association to another object.
 * //from ww  w. j  a v a 2  s.co  m
 * @param source
 * @param property
 * @return
 */
protected Object convertAssociation(Object source, MongoPersistentProperty property) {

    if (property == null || source == null || source instanceof DBObject) {
        return source;
    }

    if (source instanceof DBRef) {

        DBRef ref = (DBRef) source;
        return new DBRef(ref.getCollectionName(), convertId(ref.getId()));
    }

    if (source instanceof Iterable) {
        BasicDBList result = new BasicDBList();
        for (Object element : (Iterable<?>) source) {
            result.add(createDbRefFor(element, property));
        }
        return result;
    }

    if (property.isMap()) {
        BasicDBObject result = new BasicDBObject();
        DBObject dbObject = (DBObject) source;
        for (String key : dbObject.keySet()) {
            result.put(key, createDbRefFor(dbObject.get(key), property));
        }
        return result;
    }

    return createDbRefFor(source, property);
}

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From source file:org.springframework.data.mongodb.core.convert.ReflectiveDBRefResolver.java

License:Apache License

/**
 * Fetches the object referenced from the database either be directly calling {@link DBRef#fetch()} or
 * {@link DBCollection#findOne(Object)}.
 *
 * @param db can be {@literal null} when using MongoDB Java driver in version 2.x.
 * @param ref must not be {@literal null}.
 * @return the document that this references.
 *//*from   w  w  w . j av a  2  s  . c o  m*/
public static DBObject fetch(MongoDbFactory factory, DBRef ref) {

    Assert.notNull(ref, "DBRef to fetch must not be null!");

    if (isMongo3Driver()) {

        Assert.notNull(factory, "DbFactory to fetch DB from must not be null!");
        return factory.getDb().getCollection(ref.getCollectionName()).findOne(ref.getId());
    }

    return (DBObject) invokeMethod(FETCH_METHOD, ref);
}

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From source file:org.teiid.translator.mongodb.MongoDocument.java

License:Open Source License

public DBObject getEmbeddedDocument(DB mongoDB, String docName) {
    for (MergeDetails ref : this.embeddedKeys) {
        if (ref.getName().equals(docName)) {
            DBRef dbRef = ref.getDBRef(mongoDB, false);
            if (dbRef != null) {
                return mongoDB.getCollection(dbRef.getRef()).findOne(new BasicDBObject("_id", dbRef.getId())); //$NON-NLS-1$
            }//from   ww w . jav a 2  s  . c o  m
        }
    }
    return null;
}

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