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/src/main/java/org/apache/datasketches/SetOperationCornerCases.java

/*
 * 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.datasketches;

import java.util.HashMap;
import java.util.Map;

public class SetOperationCornerCases {
  private static final long MAX = Long.MAX_VALUE;

  public enum IntersectAction {
    DEGEN_MIN_0_F("D", "Degenerate{MinTheta, 0, F}"),
    EMPTY_1_0_T("E", "Empty{1.0, 0, T}"),
    FULL_INTERSECT("I", "Full Intersect");

    private String actionId;
    private String actionDescription;

    private IntersectAction(final String actionId, final String actionDescription) {
      this.actionId = actionId;
      this.actionDescription = actionDescription;
    }

    public String getActionId() {
      return actionId;
    }

    public String getActionDescription() {
      return actionDescription;
    }
  }

  public enum AnotbAction {
    SKETCH_A("A", "Sketch A Exactly"),
    TRIM_A("TA", "Trim Sketch A by MinTheta"),
    DEGEN_MIN_0_F("D", "Degenerate{MinTheta, 0, F}"),
    DEGEN_THA_0_F("DA", "Degenerate{ThetaA, 0, F}"),
    EMPTY_1_0_T("E", "Empty{1.0, 0, T}"),
    FULL_ANOTB("N", "Full AnotB");

    private String actionId;
    private String actionDescription;

    private AnotbAction(final String actionId, final String actionDescription) {
      this.actionId = actionId;
      this.actionDescription = actionDescription;
    }

    public String getActionId() {
      return actionId;
    }

    public String getActionDescription() {
      return actionDescription;
    }
  }

  public enum UnionAction {
    SKETCH_A("A", "Sketch A Exactly"),
    TRIM_A("TA", "Trim Sketch A by MinTheta"),
    SKETCH_B("B", "Sketch B Exactly"),
    TRIM_B("TB", "Trim Sketch B by MinTheta"),
    DEGEN_MIN_0_F("D", "Degenerate{MinTheta, 0, F}"),
    DEGEN_THA_0_F("DA", "Degenerate{ThetaA, 0, F}"),
    DEGEN_THB_0_F("DB", "Degenerate{ThetaB, 0, F}"),
    EMPTY_1_0_T("E", "Empty{1.0, 0, T}"),
    FULL_UNION("N", "Full Union");

    private String actionId;
    private String actionDescription;

    private UnionAction(final String actionId, final String actionDescription) {
      this.actionId = actionId;
      this.actionDescription = actionDescription;
    }

    public String getActionId() {
      return actionId;
    }

    public String getActionDescription() {
      return actionDescription;
    }
  }


  public enum CornerCase {
    Empty_Empty(055, "A{ 1.0, 0, T} ; B{ 1.0, 0, T}",
        IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.EMPTY_1_0_T),
    Empty_Exact(056, "A{ 1.0, 0, T} ; B{ 1.0,>0, F}",
        IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.SKETCH_B),
    Empty_Estimation(052, "A{ 1.0, 0, T} ; B{<1.0,>0, F",
        IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.SKETCH_B),
    Empty_Degen(050, "A{ 1.0, 0, T} ; B{<1.0, 0, F}",
        IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.DEGEN_THB_0_F),

    Exact_Empty(065, "A{ 1.0,>0, F} ; B{ 1.0, 0, T}",
        IntersectAction.EMPTY_1_0_T, AnotbAction.SKETCH_A, UnionAction.SKETCH_A),
    Exact_Exact(066, "A{ 1.0,>0, F} ; B{ 1.0,>0, F}",
        IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
    Exact_Estimation(062, "A{ 1.0,>0, F} ; B{<1.0,>0, F}",
        IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
    Exact_Degen(060, "A{ 1.0,>0, F} ; B{<1.0, 0, F}",
        IntersectAction.DEGEN_MIN_0_F, AnotbAction.TRIM_A, UnionAction.TRIM_A),

    Estimation_Empty(025, "A{<1.0,>0, F} ; B{ 1.0, 0, T}",
        IntersectAction.EMPTY_1_0_T, AnotbAction.SKETCH_A, UnionAction.SKETCH_A),
    Estimation_Exact(026, "A{<1.0,>0, F} ; B{ 1.0,>0, F}",
        IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
    Estimation_Estimation(022, "A{<1.0,>0, F} ; B{<1.0,>0, F}",
        IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
    Estimation_Degen(020, "A{<1.0,>0, F} ; B{<1.0, 0, F}",
        IntersectAction.DEGEN_MIN_0_F, AnotbAction.TRIM_A, UnionAction.TRIM_A),

    Degen_Empty(005, "A{<1.0, 0, F} ; B{ 1.0, 0, T}",
        IntersectAction.EMPTY_1_0_T, AnotbAction.DEGEN_THA_0_F, UnionAction.DEGEN_THA_0_F),
    Degen_Exact(006, "A{<1.0, 0, F} ; B{ 1.0,>0, F}",
        IntersectAction.DEGEN_MIN_0_F, AnotbAction.DEGEN_THA_0_F, UnionAction.TRIM_B),
    Degen_Estimation(002, "A{<1.0, 0, F} ; B{<1.0,>0, F}",
        IntersectAction.DEGEN_MIN_0_F, AnotbAction.DEGEN_MIN_0_F, UnionAction.TRIM_B),
    Degen_Degen(000, "A{<1.0, 0, F} ; B{<1.0, 0, F}",
        IntersectAction.DEGEN_MIN_0_F, AnotbAction.DEGEN_MIN_0_F, UnionAction.DEGEN_MIN_0_F);

    private static final Map<Integer, CornerCase> caseIdToCornerCaseMap = new HashMap<>();
    private int caseId;
    private String caseDescription;
    private IntersectAction intersectAction;
    private AnotbAction anotbAction;
    private UnionAction unionAction;

    static {
      for (final CornerCase cc : values()) {
        caseIdToCornerCaseMap.put(cc.getId(), cc);
      }
    }

    private CornerCase(final int caseId, final String caseDescription,
        final IntersectAction intersectAction, final AnotbAction anotbAction, final UnionAction unionAction) {
      this.caseId = caseId;
      this.caseDescription = caseDescription;
      this.intersectAction = intersectAction;
      this.anotbAction = anotbAction;
      this.unionAction = unionAction;
    }

    public int getId() {
      return caseId;
    }

    public String getCaseDescription() {
      return caseDescription;
    }

    public IntersectAction getIntersectAction() {
      return intersectAction;
    }

    public AnotbAction getAnotbAction() {
      return anotbAction;
    }

    public UnionAction getUnionAction() {
      return unionAction;
    }

    //See checkById test in /tuple/MiscTest.
    public static CornerCase caseIdToCornerCase(final int id) {
      final CornerCase cc = caseIdToCornerCaseMap.get(id);
      if (cc == null) {
        throw new SketchesArgumentException("Possible Corruption: Illegal CornerCase ID: " + Integer.toOctalString(id));
      }
      return cc;
    }
  } //end of enum CornerCase

  public static int createCornerCaseId(
      final long thetaLongA, final int countA, final boolean emptyA,
      final long thetaLongB, final int countB, final boolean emptyB) {
    return (sketchStateId(emptyA, countA, thetaLongA) << 3) | sketchStateId(emptyB, countB, thetaLongB);
  }

  public static int sketchStateId(final boolean isEmpty, final int numRetained, final long thetaLong) {
    // assume thetaLong = MAX if empty
    return (((thetaLong == MAX) || isEmpty) ? 4 : 0) | ((numRetained > 0) ? 2 : 0) | (isEmpty ? 1 : 0);
  }
}

1	/*
2	* Licensed to the Apache Software Foundation (ASF) under one
3	* or more contributor license agreements. See the NOTICE file
4	* distributed with this work for additional information
5	* regarding copyright ownership. The ASF licenses this file
6	* to you under the Apache License, Version 2.0 (the
7	* "License"); you may not use this file except in compliance
8	* with the License. You may obtain a copy of the License at
9	*
10	* http://www.apache.org/licenses/LICENSE-2.0
11	*
12	* Unless required by applicable law or agreed to in writing,
13	* software distributed under the License is distributed on an
14	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15	* KIND, either express or implied. See the License for the
16	* specific language governing permissions and limitations
17	* under the License.
18	*/
19
20	package org.apache.datasketches;
21
22	import java.util.HashMap;
23	import java.util.Map;
24
25	public class SetOperationCornerCases {	×
26	private static final long MAX = Long.MAX_VALUE;
27
28	public enum IntersectAction {	1✔
29	DEGEN_MIN_0_F("D", "Degenerate{MinTheta, 0, F}"),	1✔
30	EMPTY_1_0_T("E", "Empty{1.0, 0, T}"),	1✔
31	FULL_INTERSECT("I", "Full Intersect");	1✔
32
33	private String actionId;
34	private String actionDescription;
35
36	private IntersectAction(final String actionId, final String actionDescription) {	1✔
37	this.actionId = actionId;	1✔
38	this.actionDescription = actionDescription;	1✔
39	}	1✔
40
41	public String getActionId() {
42	return actionId;	×
43	}
44
45	public String getActionDescription() {
46	return actionDescription;	×
47	}
48	}
49
50	public enum AnotbAction {	1✔
51	SKETCH_A("A", "Sketch A Exactly"),	1✔
52	TRIM_A("TA", "Trim Sketch A by MinTheta"),	1✔
53	DEGEN_MIN_0_F("D", "Degenerate{MinTheta, 0, F}"),	1✔
54	DEGEN_THA_0_F("DA", "Degenerate{ThetaA, 0, F}"),	1✔
55	EMPTY_1_0_T("E", "Empty{1.0, 0, T}"),	1✔
56	FULL_ANOTB("N", "Full AnotB");	1✔
57
58	private String actionId;
59	private String actionDescription;
60
61	private AnotbAction(final String actionId, final String actionDescription) {	1✔
62	this.actionId = actionId;	1✔
63	this.actionDescription = actionDescription;	1✔
64	}	1✔
65
66	public String getActionId() {
67	return actionId;	×
68	}
69
70	public String getActionDescription() {
71	return actionDescription;	×
72	}
73	}
74
75	public enum UnionAction {	1✔
76	SKETCH_A("A", "Sketch A Exactly"),	1✔
77	TRIM_A("TA", "Trim Sketch A by MinTheta"),	1✔
78	SKETCH_B("B", "Sketch B Exactly"),	1✔
79	TRIM_B("TB", "Trim Sketch B by MinTheta"),	1✔
80	DEGEN_MIN_0_F("D", "Degenerate{MinTheta, 0, F}"),	1✔
81	DEGEN_THA_0_F("DA", "Degenerate{ThetaA, 0, F}"),	1✔
82	DEGEN_THB_0_F("DB", "Degenerate{ThetaB, 0, F}"),	1✔
83	EMPTY_1_0_T("E", "Empty{1.0, 0, T}"),	1✔
84	FULL_UNION("N", "Full Union");	1✔
85
86	private String actionId;
87	private String actionDescription;
88
89	private UnionAction(final String actionId, final String actionDescription) {	1✔
90	this.actionId = actionId;	1✔
91	this.actionDescription = actionDescription;	1✔
92	}	1✔
93
94	public String getActionId() {
95	return actionId;	×
96	}
97
98	public String getActionDescription() {
99	return actionDescription;	×
100	}
101	}
102
103
104	public enum CornerCase {	1✔
105	Empty_Empty(055, "A{ 1.0, 0, T} ; B{ 1.0, 0, T}",	1✔
106	IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.EMPTY_1_0_T),
107	Empty_Exact(056, "A{ 1.0, 0, T} ; B{ 1.0,>0, F}",	1✔
108	IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.SKETCH_B),
109	Empty_Estimation(052, "A{ 1.0, 0, T} ; B{<1.0,>0, F",	1✔
110	IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.SKETCH_B),
111	Empty_Degen(050, "A{ 1.0, 0, T} ; B{<1.0, 0, F}",	1✔
112	IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.DEGEN_THB_0_F),
113
114	Exact_Empty(065, "A{ 1.0,>0, F} ; B{ 1.0, 0, T}",	1✔
115	IntersectAction.EMPTY_1_0_T, AnotbAction.SKETCH_A, UnionAction.SKETCH_A),
116	Exact_Exact(066, "A{ 1.0,>0, F} ; B{ 1.0,>0, F}",	1✔
117	IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
118	Exact_Estimation(062, "A{ 1.0,>0, F} ; B{<1.0,>0, F}",	1✔
119	IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
120	Exact_Degen(060, "A{ 1.0,>0, F} ; B{<1.0, 0, F}",	1✔
121	IntersectAction.DEGEN_MIN_0_F, AnotbAction.TRIM_A, UnionAction.TRIM_A),
122
123	Estimation_Empty(025, "A{<1.0,>0, F} ; B{ 1.0, 0, T}",	1✔
124	IntersectAction.EMPTY_1_0_T, AnotbAction.SKETCH_A, UnionAction.SKETCH_A),
125	Estimation_Exact(026, "A{<1.0,>0, F} ; B{ 1.0,>0, F}",	1✔
126	IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
127	Estimation_Estimation(022, "A{<1.0,>0, F} ; B{<1.0,>0, F}",	1✔
128	IntersectAction.FULL_INTERSECT, AnotbAction.FULL_ANOTB, UnionAction.FULL_UNION),
129	Estimation_Degen(020, "A{<1.0,>0, F} ; B{<1.0, 0, F}",	1✔
130	IntersectAction.DEGEN_MIN_0_F, AnotbAction.TRIM_A, UnionAction.TRIM_A),
131
132	Degen_Empty(005, "A{<1.0, 0, F} ; B{ 1.0, 0, T}",	1✔
133	IntersectAction.EMPTY_1_0_T, AnotbAction.DEGEN_THA_0_F, UnionAction.DEGEN_THA_0_F),
134	Degen_Exact(006, "A{<1.0, 0, F} ; B{ 1.0,>0, F}",	1✔
135	IntersectAction.DEGEN_MIN_0_F, AnotbAction.DEGEN_THA_0_F, UnionAction.TRIM_B),
136	Degen_Estimation(002, "A{<1.0, 0, F} ; B{<1.0,>0, F}",	1✔
137	IntersectAction.DEGEN_MIN_0_F, AnotbAction.DEGEN_MIN_0_F, UnionAction.TRIM_B),
138	Degen_Degen(000, "A{<1.0, 0, F} ; B{<1.0, 0, F}",	1✔
139	IntersectAction.DEGEN_MIN_0_F, AnotbAction.DEGEN_MIN_0_F, UnionAction.DEGEN_MIN_0_F);
140
141	private static final Map<Integer, CornerCase> caseIdToCornerCaseMap = new HashMap<>();	1✔
142	private int caseId;
143	private String caseDescription;
144	private IntersectAction intersectAction;
145	private AnotbAction anotbAction;
146	private UnionAction unionAction;
147
148	static {
149	for (final CornerCase cc : values()) {	1✔
150	caseIdToCornerCaseMap.put(cc.getId(), cc);	1✔
151	}
152	}	1✔
153
154	private CornerCase(final int caseId, final String caseDescription,
155	final IntersectAction intersectAction, final AnotbAction anotbAction, final UnionAction unionAction) {	1✔
156	this.caseId = caseId;	1✔
157	this.caseDescription = caseDescription;	1✔
158	this.intersectAction = intersectAction;	1✔
159	this.anotbAction = anotbAction;	1✔
160	this.unionAction = unionAction;	1✔
161	}	1✔
162
163	public int getId() {
164	return caseId;	1✔
165	}
166
167	public String getCaseDescription() {
168	return caseDescription;	×
169	}
170
171	public IntersectAction getIntersectAction() {
172	return intersectAction;	×
173	}
174
175	public AnotbAction getAnotbAction() {
176	return anotbAction;	1✔
177	}
178
179	public UnionAction getUnionAction() {
180	return unionAction;	×
181	}
182
183	//See checkById test in /tuple/MiscTest.
184	public static CornerCase caseIdToCornerCase(final int id) {
185	final CornerCase cc = caseIdToCornerCaseMap.get(id);	1✔
186	if (cc == null) {	1✔
187	throw new SketchesArgumentException("Possible Corruption: Illegal CornerCase ID: " + Integer.toOctalString(id));	×
188	}
189	return cc;	1✔
190	}
191	} //end of enum CornerCase
192
193	public static int createCornerCaseId(
194	final long thetaLongA, final int countA, final boolean emptyA,
195	final long thetaLongB, final int countB, final boolean emptyB) {
196	return (sketchStateId(emptyA, countA, thetaLongA) << 3) \| sketchStateId(emptyB, countB, thetaLongB);	1✔
197	}
198
199	public static int sketchStateId(final boolean isEmpty, final int numRetained, final long thetaLong) {
200	// assume thetaLong = MAX if empty
201	return (((thetaLong == MAX) \|\| isEmpty) ? 4 : 0) \| ((numRetained > 0) ? 2 : 0) \| (isEmpty ? 1 : 0);	1✔
202	}
203	}

apache / datasketches-java / #124

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