| /* |
| * 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.schema; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.hugegraph.HugeGraph; |
| import org.apache.hugegraph.backend.id.Id; |
| import org.apache.hugegraph.schema.builder.SchemaBuilder; |
| import org.apache.hugegraph.type.HugeType; |
| import org.apache.hugegraph.type.define.Frequency; |
| import org.apache.hugegraph.util.E; |
| |
| import com.google.common.base.Objects; |
| |
| public class EdgeLabel extends SchemaLabel { |
| |
| public static final EdgeLabel NONE = new EdgeLabel(null, NONE_ID, UNDEF); |
| |
| private Id sourceLabel = NONE_ID; |
| private Id targetLabel = NONE_ID; |
| private Frequency frequency; |
| private List<Id> sortKeys; |
| |
| public EdgeLabel(final HugeGraph graph, Id id, String name) { |
| super(graph, id, name); |
| this.frequency = Frequency.DEFAULT; |
| this.sortKeys = new ArrayList<>(); |
| } |
| |
| @Override |
| public HugeType type() { |
| return HugeType.EDGE_LABEL; |
| } |
| |
| public Frequency frequency() { |
| return this.frequency; |
| } |
| |
| public void frequency(Frequency frequency) { |
| this.frequency = frequency; |
| } |
| |
| public boolean directed() { |
| // TODO: implement (do we need this method?) |
| return true; |
| } |
| |
| public String sourceLabelName() { |
| return this.graph.vertexLabelOrNone(this.sourceLabel).name(); |
| } |
| |
| public Id sourceLabel() { |
| return this.sourceLabel; |
| } |
| |
| public void sourceLabel(Id id) { |
| E.checkArgument(this.sourceLabel == NONE_ID, |
| "Not allowed to set source label multi times " + |
| "of edge label '%s'", this.name()); |
| this.sourceLabel = id; |
| } |
| |
| public String targetLabelName() { |
| return this.graph.vertexLabelOrNone(this.targetLabel).name(); |
| } |
| |
| public Id targetLabel() { |
| return this.targetLabel; |
| } |
| |
| public void targetLabel(Id id) { |
| E.checkArgument(this.targetLabel == NONE_ID, |
| "Not allowed to set target label multi times " + |
| "of edge label '%s'", this.name()); |
| this.targetLabel = id; |
| } |
| |
| public boolean linkWithLabel(Id id) { |
| return this.sourceLabel.equals(id) || this.targetLabel.equals(id); |
| } |
| |
| public boolean checkLinkEqual(Id sourceLabel, Id targetLabel) { |
| return this.sourceLabel.equals(sourceLabel) && |
| this.targetLabel.equals(targetLabel); |
| } |
| |
| public boolean existSortKeys() { |
| return this.sortKeys.size() > 0; |
| } |
| |
| public List<Id> sortKeys() { |
| return Collections.unmodifiableList(this.sortKeys); |
| } |
| |
| public void sortKey(Id id) { |
| this.sortKeys.add(id); |
| } |
| |
| public void sortKeys(Id... ids) { |
| this.sortKeys.addAll(Arrays.asList(ids)); |
| } |
| |
| public boolean hasSameContent(EdgeLabel other) { |
| return super.hasSameContent(other) && |
| this.frequency == other.frequency && |
| Objects.equal(this.sourceLabelName(), other.sourceLabelName()) && |
| Objects.equal(this.targetLabelName(), other.targetLabelName()) && |
| Objects.equal(this.graph.mapPkId2Name(this.sortKeys), |
| other.graph.mapPkId2Name(other.sortKeys)); |
| } |
| |
| public static EdgeLabel undefined(HugeGraph graph, Id id) { |
| return new EdgeLabel(graph, id, UNDEF); |
| } |
| |
| public interface Builder extends SchemaBuilder<EdgeLabel> { |
| |
| Id rebuildIndex(); |
| |
| Builder link(String sourceLabel, String targetLabel); |
| |
| Builder sourceLabel(String label); |
| |
| Builder targetLabel(String label); |
| |
| Builder singleTime(); |
| |
| Builder multiTimes(); |
| |
| Builder sortKeys(String... keys); |
| |
| Builder properties(String... properties); |
| |
| Builder nullableKeys(String... keys); |
| |
| Builder frequency(Frequency frequency); |
| |
| Builder ttl(long ttl); |
| |
| Builder ttlStartTime(String ttlStartTime); |
| |
| Builder enableLabelIndex(boolean enable); |
| |
| Builder userdata(String key, Object value); |
| |
| Builder userdata(Map<String, Object> userdata); |
| } |
| } |