1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*
* Copyright 2018 Zacharias Knudsen
*
* Licensed 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.
*/
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION h3" to load this file. \quit
-- Declare shell type, allowing us to reference while defining functions
CREATE TYPE h3index;
CREATE OR REPLACE FUNCTION h3index_in(cstring) RETURNS h3index
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_out(h3index) RETURNS cstring
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_eq(h3index, h3index) RETURNS boolean
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_ne(h3index, h3index) RETURNS boolean
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_lt(h3index, h3index) RETURNS boolean
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_le(h3index, h3index) RETURNS boolean
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_gt(h3index, h3index) RETURNS boolean
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_ge(h3index, h3index) RETURNS boolean
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE OR REPLACE FUNCTION h3index_cmp(h3index, h3index) RETURNS integer
AS 'h3' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-- Finally, we can provide the full definition of the data type
CREATE TYPE h3index (
INTERNALLENGTH = 8,
INPUT = h3index_in,
OUTPUT = h3index_out,
ALIGNMENT = double
);
-- Operators
CREATE OPERATOR = (
LEFTARG = h3index,
RIGHTARG = h3index,
PROCEDURE = h3index_eq,
COMMUTATOR = =,
NEGATOR = <>,
RESTRICT = eqsel,
JOIN = eqjoinsel,
HASHES, MERGES
);
CREATE OPERATOR <> (
LEFTARG = h3index,
RIGHTARG = h3index,
PROCEDURE = h3index_ne,
COMMUTATOR = <>,
NEGATOR = =,
RESTRICT = neqsel,
JOIN = neqjoinsel
);
CREATE OPERATOR < (
LEFTARG = h3index,
RIGHTARG = h3index,
PROCEDURE = h3index_lt,
COMMUTATOR = > ,
NEGATOR = >= ,
RESTRICT = scalarltsel,
JOIN = scalarltjoinsel
);
CREATE OPERATOR <= (
LEFTARG = h3index,
RIGHTARG = h3index,
PROCEDURE = h3index_le,
COMMUTATOR = >= ,
NEGATOR = > ,
RESTRICT = scalarltsel,
JOIN = scalarltjoinsel
);
CREATE OPERATOR > (
LEFTARG = h3index,
RIGHTARG = h3index,
PROCEDURE = h3index_gt,
COMMUTATOR = < ,
NEGATOR = <= ,
RESTRICT = scalargtsel,
JOIN = scalargtjoinsel
);
CREATE OPERATOR >= (
LEFTARG = h3index,
RIGHTARG = h3index,
PROCEDURE = h3index_ge,
COMMUTATOR = <= ,
NEGATOR = < ,
RESTRICT = scalargtsel,
JOIN = scalargtjoinsel
);
-- Operator class
CREATE OPERATOR CLASS btree_h3index_ops DEFAULT FOR TYPE h3index
USING btree AS
OPERATOR 1 < ,
OPERATOR 2 <= ,
OPERATOR 3 = ,
OPERATOR 4 >= ,
OPERATOR 5 > ,
FUNCTION 1 h3index_cmp(h3index, h3index);
|
