Examples of org.openengsb.core.api.model.QueryRequest

org.openengsb.core.api.model.QueryRequest
The QueryRequest object encapsulates a query request for data against the Engineering Database. It contains parameters which represent properties of models and allows to define meta data for the query. This meta data is: timestamp = The timestamp defines for which point in time the query is performed (only the objects which were active at the given point in time and which are fitting the parameters are returned). The default value is System.currentTimeMillis(). contextId = If this value is unequal to null, the search will be restricted to models of a specific context. wildcardAware = Defines if the values of the parameters are aware of wildcards. Wildcards are % for a generic sequence of characters and _ for exactly one unknown character. The default value is true. caseSensitive = Defines if the values of the parameters are case sensitive in the query. The default value is true. andJoined = Defines if the parameters are joined via logical AND operators (value=true) or logical OR operators (value=false). The default value is true.

    public void testIfQueryForDeletedObjects_onlyReturnsDeletedObjects() {
        EDBObject v1 = createRandomTestObject("/test/query/16/1");
        commitObjects(Lists.newArrayList(v1), null, null);
        commitObjects(null, null, Lists.newArrayList(v1));


        QueryRequest request = QueryRequest.create();
        List<EDBObject> result = db.query(request);
        assertThat(result.size(), is(0));


        result = db.query(request.deleted());
        assertThat(result.size(), is(1));
    }

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    public void deleteCommit(UUID revision) throws EDBException {
        if (revision == null) {
            throw new EDBException("null revision not allowed");
        }
        JPACommit commit = dao.getJPACommit(revision.toString());
        QueryRequest request =
            QueryRequest.create().deleted().orJoined();
        for (String oid : commit.getDeletions()) {
            request.addParameter("oid", oid);
        }
        List<JPAObject> deletedObjects = dao.query(request);
        performDeleteLogic(commit, deletedObjects);
    }

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            LOGGER.debug("Got invalid timestamp string. Use the current timestamp instead");
            time = System.currentTimeMillis();
        } else {
            time = Long.parseLong(timestamp);
        }
        QueryRequest request = parseQueryString(query);
        request.setTimestamp(time);
        return query(model, request);
    }

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    /**
     * Parses the previously split query string into a query request and fills the parameters of the object
     * with the data.
     */
    private QueryRequest createQueryRequest(String[] elements) {
        QueryRequest request = QueryRequest.create();
        for (String element : elements) {
            String[] parts = StringUtils.split(element, ":", 2);
            parts[0] = parts[0].replace("\\", "\\\\");
            parts[1] = parts[1].replace("\\", "\\\\");
            request.addParameter(parts[0], parts[1].substring(1, parts[1].length() - 1));
        }
        return request;
    }

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