| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with this |
| * work for additional information regarding copyright ownership. The ASF |
| * licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.hugegraph.backend.store.palo; |
| |
| import org.apache.hugegraph.backend.store.BackendFeatures; |
| |
| public class PaloFeatures implements BackendFeatures { |
| |
| @Override |
| public boolean supportsScanToken() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsScanKeyPrefix() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsScanKeyRange() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsQuerySchemaByName() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsQueryByLabel() { |
| /* |
| * Create a rollup table on vertices/edges can speed up query by label, |
| * but it will store data in vertices/edges again. |
| * See: https://github.com/baidu/palo/wiki/Data-Model%2C-Rollup-%26 |
| * -Prefix-Index |
| */ |
| return false; |
| } |
| |
| @Override |
| public boolean supportsQueryWithInCondition() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsQueryWithRangeCondition() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsQuerySortByInputIds() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsQueryWithContains() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsQueryWithContainsKey() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsQueryWithOrderBy() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsQueryByPage() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsDeleteEdgeByLabel() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsUpdateVertexProperty() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsMergeVertexProperty() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsUpdateEdgeProperty() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsTransaction() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsNumberType() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsAggregateProperty() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsTtl() { |
| return false; |
| } |
| |
| @Override |
| public boolean supportsOlapProperties() { |
| return false; |
| } |
| } |