Examples with FilterOperator com.google.appengine.api.datastore.Query.FilterOperator used on opensource projects

Example 1 with FilterOperator

use of com.google.appengine.api.datastore.Query.FilterOperator in project siena by mandubian.

the class GaeQueryUtils method addFiltersOrders.

public static <T> com.google.appengine.api.datastore.Query addFiltersOrders(QueryData<T> query, com.google.appengine.api.datastore.Query q, Key parentKey) {
    List<QueryFilter> filters = query.getFilters();
    for (QueryFilter filter : filters) {
        if (QueryFilterSimple.class.isAssignableFrom(filter.getClass())) {
            QueryFilterSimple qf = (QueryFilterSimple) filter;
            Field f = qf.field;
            String propertyName = ClassInfo.getColumnNames(f)[0];
            Object value = qf.value;
            FilterOperator op = operators.get(qf.operator);
            // IN and NOT_EQUAL doesn't allow to use cursors
            if (op == FilterOperator.IN || op == FilterOperator.NOT_EQUAL) {
                QueryOptionGaeContext gaeCtx = (QueryOptionGaeContext) query.option(QueryOptionGaeContext.ID);
                if (gaeCtx == null) {
                    gaeCtx = new QueryOptionGaeContext();
                    query.options().put(gaeCtx.type, gaeCtx);
                }
                gaeCtx.useCursor = false;
                query.option(QueryOptionOffset.ID).activate();
            }
            if (value != null && ClassInfo.isModel(value.getClass())) {
                Key key = GaeMappingUtils.getKey(value);
                q.addFilter(propertyName, op, key);
            } else {
                if (ClassInfo.isId(f)) {
                    Id id = f.getAnnotation(Id.class);
                    switch(id.value()) {
                        case NONE:
                            if (value != null) {
                                if (!Collection.class.isAssignableFrom(value.getClass())) {
                                    // long or string goes toString
                                    Key key;
                                    if (parentKey == null) {
                                        key = KeyFactory.createKey(q.getKind(), value.toString());
                                    } else {
                                        key = KeyFactory.createKey(parentKey, q.getKind(), value.toString());
                                    }
                                    q.addFilter(Entity.KEY_RESERVED_PROPERTY, op, key);
                                } else {
                                    List<Key> keys = new ArrayList<Key>();
                                    for (Object val : (Collection<?>) value) {
                                        if (parentKey == null) {
                                            keys.add(KeyFactory.createKey(q.getKind(), val.toString()));
                                        } else {
                                            keys.add(KeyFactory.createKey(parentKey, q.getKind(), val.toString()));
                                        }
                                    }
                                    q.addFilter(Entity.KEY_RESERVED_PROPERTY, op, keys);
                                }
                            }
                            break;
                        case AUTO_INCREMENT:
                            if (value != null) {
                                if (!Collection.class.isAssignableFrom(value.getClass())) {
                                    Key key;
                                    Class<?> type = f.getType();
                                    if (Long.TYPE == type || Long.class.isAssignableFrom(type)) {
                                        if (parentKey == null) {
                                            key = KeyFactory.createKey(q.getKind(), (Long) value);
                                        } else {
                                            key = KeyFactory.createKey(parentKey, q.getKind(), (Long) value);
                                        }
                                    } else {
                                        if (parentKey == null) {
                                            key = KeyFactory.createKey(q.getKind(), value.toString());
                                        } else {
                                            key = KeyFactory.createKey(parentKey, q.getKind(), value.toString());
                                        }
                                    }
                                    q.addFilter(Entity.KEY_RESERVED_PROPERTY, op, key);
                                } else {
                                    List<Key> keys = new ArrayList<Key>();
                                    for (Object val : (Collection<?>) value) {
                                        if (value instanceof String)
                                            val = Long.parseLong((String) val);
                                        if (parentKey == null) {
                                            keys.add(KeyFactory.createKey(q.getKind(), (Long) val));
                                        } else {
                                            keys.add(KeyFactory.createKey(parentKey, q.getKind(), (Long) val));
                                        }
                                    }
                                    q.addFilter(Entity.KEY_RESERVED_PROPERTY, op, keys);
                                }
                            }
                            break;
                        case UUID:
                            if (value != null) {
                                if (!Collection.class.isAssignableFrom(value.getClass())) {
                                    // long or string goes toString
                                    Key key;
                                    if (parentKey == null) {
                                        key = KeyFactory.createKey(q.getKind(), value.toString());
                                    } else {
                                        key = KeyFactory.createKey(parentKey, q.getKind(), value.toString());
                                    }
                                    q.addFilter(Entity.KEY_RESERVED_PROPERTY, op, key);
                                } else {
                                    List<Key> keys = new ArrayList<Key>();
                                    for (Object val : (Collection<?>) value) {
                                        keys.add(KeyFactory.createKey(q.getKind(), val.toString()));
                                    }
                                    q.addFilter(Entity.KEY_RESERVED_PROPERTY, op, keys);
                                }
                            }
                            break;
                        default:
                            throw new SienaException("Id Generator " + id.value() + " not supported");
                    }
                } else if (Enum.class.isAssignableFrom(f.getType())) {
                    value = value.toString();
                    q.addFilter(propertyName, op, value);
                } else {
                    q.addFilter(propertyName, op, value);
                }
            }
        } else if (QueryFilterSearch.class.isAssignableFrom(filter.getClass())) {
            Class<T> clazz = query.getQueriedClass();
            QueryFilterSearch qf = (QueryFilterSearch) filter;
            if (qf.fields.length > 1)
                throw new SienaException("Search not possible for several fields in GAE: only one field");
            try {
                Field field = Util.getField(clazz, qf.fields[0]);
                if (field.isAnnotationPresent(Unindexed.class)) {
                    throw new SienaException("Cannot search the @Unindexed field " + field.getName());
                }
                // cuts match into words
                String[] words = qf.match.split("\\s");
                // if several words, then only OR operator represented by IN GAE
                Pattern pNormal = Pattern.compile("[^\\*](\\w+)[^\\*]");
                if (words.length > 1) {
                    for (String word : words) {
                        if (!pNormal.matcher(word).matches()) {
                            throw new SienaException("Cannot do a multiwords search with the * operator");
                        }
                    }
                    List<String> wordList = new ArrayList<String>();
                    Collections.addAll(wordList, words);
                    addSearchFilterIn(q, field, wordList);
                } else {
                    // searches for pattern such as "alpha*" or "*alpha" or "alpha"
                    Pattern pStart = Pattern.compile("(\\w+)\\*");
                    String word = words[0];
                    Matcher matcher = pStart.matcher(word);
                    if (matcher.matches()) {
                        String realWord = matcher.group(1);
                        addSearchFilterBeginsWith(q, field, realWord);
                        continue;
                    }
                    matcher = pNormal.matcher(word);
                    if (matcher.matches()) {
                        addSearchFilterEquals(q, field, word);
                        continue;
                    }
                    Pattern pEnd = Pattern.compile("\\*(\\w+)");
                    matcher = pEnd.matcher(word);
                    if (matcher.matches()) {
                        throw new SienaException("Cannot do a \"*word\" search in GAE");
                    }
                }
            } catch (Exception e) {
                throw new SienaException(e);
            }
            break;
        } else if (QueryFilterEmbedded.class.isAssignableFrom(filter.getClass())) {
            QueryFilterEmbedded qf = (QueryFilterEmbedded) filter;
            String propName = "";
            int sz = qf.fields.size();
            for (int i = 0; i < sz; i++) {
                propName += ClassInfo.getSingleColumnName(qf.fields.get(i));
                if (i < sz - 1) {
                    propName += qf.fieldSeparator;
                }
            }
            Object value = qf.value;
            FilterOperator op = operators.get(qf.operator);
            // IN and NOT_EQUAL doesn't allow to use cursors
            if (op == FilterOperator.IN || op == FilterOperator.NOT_EQUAL) {
                QueryOptionGaeContext gaeCtx = (QueryOptionGaeContext) query.option(QueryOptionGaeContext.ID);
                if (gaeCtx == null) {
                    gaeCtx = new QueryOptionGaeContext();
                    query.options().put(gaeCtx.type, gaeCtx);
                }
                gaeCtx.useCursor = false;
                query.option(QueryOptionOffset.ID).activate();
            }
            q.addFilter(propName, op, value);
        }
    }
    // adds filter on owners
    List<QueryOwned> ownees = query.getOwnees();
    for (QueryOwned ownee : ownees) {
        String propertyName = ClassInfo.getSimplestColumnName(ownee.field);
        FilterOperator op = operators.get("=");
        Key key = GaeMappingUtils.getKey(ownee.owner);
        q.addFilter(propertyName, op, key);
    }
    List<QueryOrder> orders = query.getOrders();
    for (QueryOrder order : orders) {
        Field f = order.field;
        if (ClassInfo.isId(f)) {
            q.addSort(Entity.KEY_RESERVED_PROPERTY, order.ascending ? SortDirection.ASCENDING : SortDirection.DESCENDING);
        } else {
            q.addSort(ClassInfo.getColumnNames(f)[0], order.ascending ? SortDirection.ASCENDING : SortDirection.DESCENDING);
        }
    }
    return q;
}