Examples of com.db4o.query.Query.execute()

com.db4o.query.Query.execute()
executes the {@link Query}. @return {@link ObjectSet} - the result of the {@link Query}.

        storage.deleteFeed(FEEDID);
        container = getContainer();
        Query query = container.query();
        query.constrain(ServerBaseFeed.class);
        query.descend("feed").descend("id").constrain(FEEDID);
        ObjectSet set = query.execute();
        assertEquals(0, set.size());


        query = getContainer().query();
        query.constrain(BaseFeed.class);
        query.descend("id").constrain(FEEDID);

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        assertEquals(0, set.size());


        query = getContainer().query();
        query.constrain(BaseFeed.class);
        query.descend("id").constrain(FEEDID);
        set = query.execute();
        assertEquals(0, set.size());
        container.close();
    }


    /*

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        query.constrain(BaseFeed.class);


        query.descend("id").constrain(feedId).equal();


        ObjectSet set = query.execute();
        if (set.size() > 1)
            throw new StorageException("Query for feed id " + feedId
                    + " returns more than one result");
        if (set.hasNext())
        return (BaseFeed<BaseFeed, BaseEntry>) set.next();

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    private boolean checkService(String feedId,String serviceId){
        Query query = this.container.query();
        query.constrain(ServerBaseFeed.class);
        query.descend("feed").descend("id").constrain(feedId).equal();
        query.descend("serviceType").constrain(serviceId).equal();
        return query.execute().size() == 1;
    }
    private ObjectSet getEnriesForFeedID(String feedId) {
        Query query = this.container.query();
        query.constrain(DB4oEntry.class);
        query.descend("feedId").constrain(feedId).equal();

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    private ObjectSet getEnriesForFeedID(String feedId) {
        Query query = this.container.query();
        query.constrain(DB4oEntry.class);
        query.descend("feedId").constrain(feedId).equal();


        return query.execute();
    }


    /**
     * @see org.apache.lucene.gdata.storage.Storage#getEntry(org.apache.lucene.gdata.data.ServerBaseEntry)
     */

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    @SuppressWarnings("unchecked")
    private DB4oEntry getInternalEntry(String id) throws StorageException {
        Query query = this.container.query();
        query.constrain(DB4oEntry.class);
        query.descend("entry").descend("id").constrain(id).equal();
        ObjectSet<DB4oEntry> resultSet = query.execute();
        if (resultSet.size() > 1)
            throw new StorageException(
                    "Entry query returned not a unique result");
        if (resultSet.hasNext())
            return resultSet.next();

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        if(accountname == null)
            throw new StorageException("Account name is null");
        Query query = this.container.query();
        query.constrain(ServerBaseFeed.class);
        query.descend("feed").descend("id").constrain(feed.getId()).equal();
        ObjectSet set = query.execute();
        if (set.hasNext())
            throw new StorageException("feed with feedID " + feed.getId()
                    + " is already stored");
        GDataAccount account = getAccount(accountname);
        refreshPersistentObject(account);

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        if (feedId == null)
            throw new StorageException("can not delete feed -- feed id is null");
        Query query = this.container.query();
        query.constrain(ServerBaseFeed.class);
        query.descend("feed").descend("id").constrain(feedId).equal();
        ObjectSet set = query.execute();
        if (set.size() > 1)
            throw new StorageException(
                    "Feed query returned not a unique result");
        if (set.size() == 0)
            throw new StorageException("no feed with feedID: " + feedId

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            throw new StorageException("Account name is null");
        GDataAccount account = getAccount(accountname);
        Query query = this.container.query();
        query.constrain(ServerBaseFeed.class);
        query.descend("feed").descend("id").constrain(feed.getId());
        ObjectSet<ServerBaseFeed> set=  query.execute();
        if (set.size() > 1)
            throw new StorageException("Query for feed id " + feed.getId()
                    + " returns more than one result");
        if (set.size() < 1)
            throw new StorageException("can not find feed for given feed id -- "

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        if(LOG.isInfoEnabled())
            LOG.info("Retrieving Service for feed -- feed id: "+feedId);
        Query query = this.container.query();
        query.constrain(ServerBaseFeed.class);
        query.descend("feed").descend("id").constrain(feedId);
        ObjectSet<ServerBaseFeed> feed =  query.execute();
        if (feed.size() > 1)
            throw new StorageException("Query for feed id " + feedId
                    + " returns more than one result");
        if (feed.size() < 1)
            throw new StorageException("can not find feed for given feed id -- "

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