XPath fixes:

 - Function renamed to "xpath".
 - Function is now strict, per discussion.
 - Return empty array in case when XPath expression detects nothing
   (previously, NULL was returned in such case), per discussion.
 - (bugfix) Work with fragments with prologue: select xpath('/a',
   '<?xml version="1.0"?><a /><b />'); // now XML datum is always wrapped
   with dummy <x>...</x>, XML prologue simply goes away (if any).
 - Some cleanup.

Nikolay Samokhvalov

Some code cleanup and documentation work by myself.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/test/regress/sql/xml.sql b/src/test/regress/sql/xml.sql
index 1658a38036..2c9db299fd 100644
--- a/src/test/regress/sql/xml.sql
+++ b/src/test/regress/sql/xml.sql
@@ -147,9 +147,9 @@ SELECT table_name, view_definition FROM information_schema.views
 
 -- Text XPath expressions evaluation
 
-SELECT xmlpath('/value', data) FROM xmltest;
-SELECT xmlpath(NULL, NULL) IS NULL FROM xmltest;
-SELECT xmlpath('', '<!-- error -->');
-SELECT xmlpath('//text()', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>');
-SELECT xmlpath('//loc:piece/@id', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc'], ARRAY['http://127.0.0.1']]);
-SELECT xmlpath('//b', '<a>one <b>two</b> three <b>etc</b></a>');
+SELECT xpath('/value', data) FROM xmltest;
+SELECT xpath(NULL, NULL) IS NULL FROM xmltest;
+SELECT xpath('', '<!-- error -->');
+SELECT xpath('//text()', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>');
+SELECT xpath('//loc:piece/@id', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
+SELECT xpath('//b', '<a>one <b>two</b> three <b>etc</b></a>');