1 | package com.hammurapi.eventbus.tests.familyties; |
2 | |
3 | import java.util.ArrayList; |
4 | import java.util.Collection; |
5 | import java.util.Iterator; |
6 | import java.util.Map; |
7 | import java.util.concurrent.locks.ReadWriteLock; |
8 | |
9 | import com.hammurapi.eventbus.AbstractEventBus; |
10 | import com.hammurapi.eventbus.HandleExtractor; |
11 | import com.hammurapi.eventbus.tests.familyties.model.Person; |
12 | import com.hammurapi.eventbus.tests.familyties.model.Relative; |
13 | import com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules; |
14 | import com.hammurapi.extract.Extractor; |
15 | import com.hammurapi.extract.Predicate; |
16 | import com.hammurapi.store.AbstractStore; |
17 | import com.hammurapi.store.DeputyStore; |
18 | import com.hammurapi.store.Index; |
19 | import com.hammurapi.store.LiveView; |
20 | import com.hammurapi.store.MultiIndex; |
21 | import com.hammurapi.store.UnmodifiableStore; |
22 | import com.hammurapi.store.local.LocalStoreBase; |
23 | |
24 | /** |
25 | * Implementation of event store. |
26 | * @author Pavel Vlasov |
27 | * |
28 | * @param <E> |
29 | * @param <P> |
30 | * @param <C> |
31 | */ |
32 | public class FamilyTiesEventStoreImpl extends LocalStoreBase<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, com.hammurapi.eventbus.tests.familyties.model.Relative, FamilyTiesEventStore> implements FamilyTiesEventStore { |
33 | |
34 | /** |
35 | * Config class with bound generic parameters. |
36 | * @author Pavel Vlasov |
37 | * |
38 | */ |
39 | public static class Config extends LocalStoreBase.Config<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, com.hammurapi.eventbus.tests.familyties.model.Relative, FamilyTiesEventStore> { |
40 | |
41 | public Config() { |
42 | setPrimaryKeyExtractor(new HandleExtractor<com.hammurapi.eventbus.tests.familyties.model.Relative, java.lang.Integer, com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules, Long, AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, FamilyTiesEventStore>()); |
43 | } |
44 | } |
45 | |
46 | private MultiIndex<AbstractEventBus.Handle<Relative, Integer, FamilyTiesRules, Long>, Relative, Person, FamilyTiesEventStore> subjectIndex; |
47 | |
48 | public FamilyTiesEventStoreImpl(Config config) { |
49 | super(config); |
50 | |
51 | FamilyTiesEventStoreExtractor<Person> subjectExtractor = new FamilyTiesEventStoreAbstractExtractor<Person>(0, null, false) { |
52 | |
53 | @Override |
54 | protected Person extractInternal( |
55 | FamilyTiesEventStore context, |
56 | Map<FamilyTiesEventStore, Map<Extractor<com.hammurapi.eventbus.AbstractEventBus.Handle<Relative, Integer, FamilyTiesRules, Long>, ? super Person, FamilyTiesEventStore>, ? super Person>> cache, |
57 | com.hammurapi.eventbus.AbstractEventBus.Handle<Relative, Integer, FamilyTiesRules, Long>... obj) { |
58 | |
59 | return obj[0].getEvent().getSubject(); |
60 | } |
61 | |
62 | }; |
63 | subjectIndex = (MultiIndex<com.hammurapi.eventbus.AbstractEventBus.Handle<Relative, Integer, FamilyTiesRules, Long>, Relative, Person, FamilyTiesEventStore>) addIndex(null, subjectExtractor, Index.Type.LAZY, false, null); |
64 | } |
65 | |
66 | @Override |
67 | public Iterable<Relative> getRelatives(Person subject) { |
68 | Collection<Relative> ret = new ArrayList<Relative>(); |
69 | Z: for (AbstractEventBus.Handle<Relative, Integer, FamilyTiesRules, Long> h: subjectIndex.find(subject)) { |
70 | if (h.isValid()) { |
71 | Relative newRelative = h.getEvent(); |
72 | Iterator<Relative> rit = ret.iterator(); |
73 | while (rit.hasNext()) { |
74 | Relative eRelative = rit.next(); |
75 | switch (supercedes(eRelative, newRelative)) { |
76 | case 0: |
77 | // Unrelated - go further. |
78 | break; |
79 | case 1: |
80 | // No need to add this new relative, jump to next new relative |
81 | continue Z; |
82 | case -1: |
83 | // New relative supercedes this one. |
84 | rit.remove(); |
85 | break; |
86 | } |
87 | } |
88 | ret.add(newRelative); |
89 | } |
90 | } |
91 | return ret; |
92 | } |
93 | |
94 | /** |
95 | * |
96 | * @param r0 |
97 | * @param r1 |
98 | * @return -1 - r1 is more specific (e.g. Daughter instead of Child) than r0, 0 - unrelated, 1 - r0 is more specific or equal. |
99 | */ |
100 | private int supercedes(Relative r0, Relative r1) { |
101 | if (r0.equals(r1)) { |
102 | return 1; |
103 | } |
104 | if (r0.getSubject().equals(r1.getSubject()) && r0.getObject().equals(r1.getObject())) { |
105 | if (r0.getClass().isInstance(r1)) { // r1 is more specific |
106 | return -1; |
107 | } |
108 | |
109 | if (r1.getClass().isInstance(r0)) { // r0 is more specific |
110 | return 1; |
111 | } |
112 | |
113 | } |
114 | return 0; |
115 | } |
116 | |
117 | protected static class FamilyTiesEventDeputyStore extends DeputyStore<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, com.hammurapi.eventbus.tests.familyties.model.Relative, FamilyTiesEventStore> implements FamilyTiesEventStore { |
118 | |
119 | public FamilyTiesEventDeputyStore( |
120 | AbstractStore<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative, java.lang.Integer, com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules, Long>, com.hammurapi.eventbus.tests.familyties.model.Relative, FamilyTiesEventStore> master, |
121 | ReadWriteLock masterLock) { |
122 | super(master, masterLock); |
123 | } |
124 | |
125 | @Override |
126 | protected FamilyTiesEventStore createDeputy() { |
127 | return new FamilyTiesEventDeputyStore(this, createMasterLock()); |
128 | } |
129 | |
130 | @Override |
131 | public FamilyTiesEventStore createUnmodifiableFacade() { |
132 | return new FamilyTiesEventUnmodifiableStore(this); |
133 | } |
134 | |
135 | @Override |
136 | protected FamilyTiesEventStore createLiveView(Predicate<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, FamilyTiesEventStore> selector) { |
137 | return new FamilyTiesEventLiveView(this, selector); |
138 | } |
139 | |
140 | @Override |
141 | public Iterable<Relative> getRelatives(Person subject) { |
142 | return ((FamilyTiesEventStore) master).getRelatives(subject); |
143 | } |
144 | |
145 | } |
146 | |
147 | protected static class FamilyTiesEventUnmodifiableStore extends UnmodifiableStore<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, com.hammurapi.eventbus.tests.familyties.model.Relative, FamilyTiesEventStore> implements FamilyTiesEventStore { |
148 | |
149 | public FamilyTiesEventUnmodifiableStore(FamilyTiesEventStore master) { |
150 | super(master); |
151 | } |
152 | |
153 | @Override |
154 | public Iterable<Relative> getRelatives(Person subject) { |
155 | return ((FamilyTiesEventStore) master).getRelatives(subject); |
156 | } |
157 | |
158 | } |
159 | |
160 | protected static class FamilyTiesEventLiveView extends LiveView<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, com.hammurapi.eventbus.tests.familyties.model.Relative, FamilyTiesEventStore> implements FamilyTiesEventStore { |
161 | |
162 | public FamilyTiesEventLiveView( |
163 | FamilyTiesEventStore master, |
164 | Predicate<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative, java.lang.Integer, com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules, Long>, FamilyTiesEventStore> selector) { |
165 | super(master, selector); |
166 | } |
167 | |
168 | @Override |
169 | public FamilyTiesEventStore createUnmodifiableFacade() { |
170 | return new FamilyTiesEventUnmodifiableStore(this); |
171 | } |
172 | |
173 | @Override |
174 | public Iterable<Relative> getRelatives(Person subject) { |
175 | return ((FamilyTiesEventStore) master).getRelatives(subject); |
176 | } |
177 | |
178 | } |
179 | |
180 | @Override |
181 | protected FamilyTiesEventStore createDeputy() { |
182 | return new FamilyTiesEventDeputyStore(this, createMasterLock()); |
183 | } |
184 | |
185 | @Override |
186 | public FamilyTiesEventStore createUnmodifiableFacade() { |
187 | return new FamilyTiesEventUnmodifiableStore(this); |
188 | } |
189 | |
190 | @Override |
191 | protected FamilyTiesEventStore createLiveView(Predicate<AbstractEventBus.Handle<com.hammurapi.eventbus.tests.familyties.model.Relative,java.lang.Integer,com.hammurapi.eventbus.tests.familyties.rules.FamilyTiesRules,Long>, FamilyTiesEventStore> selector) { |
192 | return new FamilyTiesEventLiveView(this, selector); |
193 | } |
194 | |
195 | } |