| /* |
| * 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.traversal.optimize; |
| |
| import java.util.Iterator; |
| |
| import org.apache.hugegraph.backend.query.Aggregate; |
| import org.apache.hugegraph.backend.query.Query; |
| import org.apache.hugegraph.iterator.Metadatable; |
| import org.apache.tinkerpop.gremlin.process.traversal.Order; |
| import org.apache.tinkerpop.gremlin.process.traversal.step.HasContainerHolder; |
| |
| public interface QueryHolder extends HasContainerHolder, Metadatable { |
| |
| String SYSPROP_PAGE = "~page"; |
| |
| Iterator<?> lastTimeResults(); |
| |
| @Override |
| default Object metadata(String meta, Object... args) { |
| Iterator<?> results = this.lastTimeResults(); |
| if (results instanceof Metadatable) { |
| return ((Metadatable) results).metadata(meta, args); |
| } |
| throw new IllegalStateException("Original results is not Metadatable"); |
| } |
| |
| Query queryInfo(); |
| |
| default void orderBy(String key, Order order) { |
| this.queryInfo().order(TraversalUtil.string2HugeKey(key), |
| TraversalUtil.convOrder(order)); |
| } |
| |
| default long setRange(long start, long end) { |
| return this.queryInfo().range(start, end); |
| } |
| |
| default void setPage(String page) { |
| this.queryInfo().page(page); |
| } |
| |
| default void setCount() { |
| this.queryInfo().capacity(Query.NO_CAPACITY); |
| } |
| |
| default void setAggregate(Aggregate.AggregateFunc func, String key) { |
| this.queryInfo().aggregate(func, key); |
| } |
| |
| default <Q extends Query> Q injectQueryInfo(Q query) { |
| query.copyBasic(this.queryInfo()); |
| return query; |
| } |
| } |