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e0f5048851
Perl has multiple internal representations of "undef", and just testing for SvTYPE(x) == SVt_NULL doesn't recognize all of them, leading to "cannot transform this Perl type to jsonb" errors. Use the approved test SvOK() instead. Report and patch by Ivan Panchenko. Back-patch to v11 where this module was added. Discussion: https://postgr.es/m/1564783533.324795401@f193.i.mail.ru
254 lines
4.5 KiB
Plaintext
254 lines
4.5 KiB
Plaintext
CREATE EXTENSION jsonb_plperl CASCADE;
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NOTICE: installing required extension "plperl"
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CREATE FUNCTION testHVToJsonb() RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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AS $$
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$val = {a => 1, b => 'boo', c => undef};
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return $val;
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$$;
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SELECT testHVToJsonb();
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testhvtojsonb
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---------------------------------
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{"a": 1, "b": "boo", "c": null}
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(1 row)
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CREATE FUNCTION testAVToJsonb() RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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AS $$
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$val = [{a => 1, b => 'boo', c => undef}, {d => 2}];
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return $val;
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$$;
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SELECT testAVToJsonb();
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testavtojsonb
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---------------------------------------------
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[{"a": 1, "b": "boo", "c": null}, {"d": 2}]
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(1 row)
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CREATE FUNCTION testSVToJsonb() RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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AS $$
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$val = 1;
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return $val;
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$$;
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SELECT testSVToJsonb();
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testsvtojsonb
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---------------
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1
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(1 row)
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CREATE FUNCTION testUVToJsonb() RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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as $$
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$val = ~0;
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return $val;
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$$;
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-- this might produce either 18446744073709551615 or 4294967295
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SELECT testUVToJsonb() IN ('18446744073709551615'::jsonb, '4294967295'::jsonb);
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?column?
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----------
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t
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(1 row)
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-- this revealed a bug in the original implementation
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CREATE FUNCTION testRegexpResultToJsonb() RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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AS $$
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return ('1' =~ m(0\t2));
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$$;
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SELECT testRegexpResultToJsonb();
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testregexpresulttojsonb
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-------------------------
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0
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(1 row)
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-- this revealed a different bug
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CREATE FUNCTION testTextToJsonbObject(text) RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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AS $$
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my $x = shift;
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return {a => $x};
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$$;
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SELECT testTextToJsonbObject('abc');
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testtexttojsonbobject
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-----------------------
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{"a": "abc"}
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(1 row)
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SELECT testTextToJsonbObject(NULL);
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testtexttojsonbobject
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-----------------------
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{"a": null}
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(1 row)
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CREATE FUNCTION roundtrip(val jsonb, ref text = '') RETURNS jsonb
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LANGUAGE plperl
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TRANSFORM FOR TYPE jsonb
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AS $$
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# can't use Data::Dumper, but let's at least check for unexpected ref type
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die 'unexpected '.(ref($_[0]) || 'not a').' reference'
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if ref($_[0]) ne $_[1];
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return $_[0];
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$$;
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SELECT roundtrip('null') is null;
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?column?
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----------
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t
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(1 row)
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SELECT roundtrip('1');
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roundtrip
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-----------
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1
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(1 row)
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SELECT roundtrip('1E+131071');
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ERROR: cannot convert infinity to jsonb
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CONTEXT: PL/Perl function "roundtrip"
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SELECT roundtrip('-1');
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roundtrip
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-----------
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-1
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(1 row)
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SELECT roundtrip('1.2');
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roundtrip
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-----------
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1.2
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(1 row)
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SELECT roundtrip('-1.2');
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roundtrip
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-----------
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-1.2
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(1 row)
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SELECT roundtrip('"string"');
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roundtrip
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-----------
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"string"
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(1 row)
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SELECT roundtrip('"NaN"');
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roundtrip
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-----------
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"NaN"
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(1 row)
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SELECT roundtrip('true');
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roundtrip
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-----------
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1
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(1 row)
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SELECT roundtrip('false');
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roundtrip
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-----------
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0
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(1 row)
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SELECT roundtrip('[]', 'ARRAY');
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roundtrip
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-----------
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[]
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(1 row)
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SELECT roundtrip('[null, null]', 'ARRAY');
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roundtrip
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--------------
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[null, null]
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(1 row)
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SELECT roundtrip('[1, 2, 3]', 'ARRAY');
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roundtrip
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-----------
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[1, 2, 3]
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(1 row)
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SELECT roundtrip('[-1, 2, -3]', 'ARRAY');
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roundtrip
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-------------
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[-1, 2, -3]
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(1 row)
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SELECT roundtrip('[1.2, 2.3, 3.4]', 'ARRAY');
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roundtrip
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-----------------
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[1.2, 2.3, 3.4]
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(1 row)
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SELECT roundtrip('[-1.2, 2.3, -3.4]', 'ARRAY');
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roundtrip
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-------------------
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[-1.2, 2.3, -3.4]
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(1 row)
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SELECT roundtrip('["string1", "string2"]', 'ARRAY');
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roundtrip
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------------------------
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["string1", "string2"]
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(1 row)
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SELECT roundtrip('[["string1", "string2"]]', 'ARRAY');
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roundtrip
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--------------------------
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[["string1", "string2"]]
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(1 row)
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SELECT roundtrip('{}', 'HASH');
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roundtrip
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-----------
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{}
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(1 row)
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SELECT roundtrip('{"1": null}', 'HASH');
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roundtrip
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-------------
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{"1": null}
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(1 row)
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SELECT roundtrip('{"1": 1}', 'HASH');
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roundtrip
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-----------
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{"1": 1}
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(1 row)
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SELECT roundtrip('{"1": -1}', 'HASH');
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roundtrip
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-----------
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{"1": -1}
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(1 row)
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SELECT roundtrip('{"1": 1.1}', 'HASH');
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roundtrip
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------------
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{"1": 1.1}
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(1 row)
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SELECT roundtrip('{"1": -1.1}', 'HASH');
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roundtrip
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-------------
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{"1": -1.1}
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(1 row)
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SELECT roundtrip('{"1": "string1"}', 'HASH');
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roundtrip
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------------------
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{"1": "string1"}
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(1 row)
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SELECT roundtrip('{"1": {"2": [3, 4, 5]}, "2": 3}', 'HASH');
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roundtrip
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---------------------------------
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{"1": {"2": [3, 4, 5]}, "2": 3}
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(1 row)
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\set VERBOSITY terse \\ -- suppress cascade details
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DROP EXTENSION plperl CASCADE;
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NOTICE: drop cascades to 8 other objects
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