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CREATE EXTENSION xml2;
select query_to_xml('select 1 as x',true,false,'');
query_to_xml
---------------------------------------------------------------
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">+
+
<row> +
<x>1</x> +
</row> +
+
</table> +
(1 row)
select xslt_process( query_to_xml('select x from generate_series(1,5) as
x',true,false,'')::text,
$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="@*" />
<xsl:apply-templates />
</xsl:copy>
</xsl:template>
<xsl:template match="comment()|processing-instruction()">
<xsl:copy />
</xsl:template>
</xsl:stylesheet>
$$::text);
xslt_process
---------------------------------------------------------------
<?xml version="1.0"?> +
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">+
+
<row> +
<x>1</x> +
</row> +
+
<row> +
<x>2</x> +
</row> +
+
<row> +
<x>3</x> +
</row> +
+
<row> +
<x>4</x> +
</row> +
+
<row> +
<x>5</x> +
</row> +
+
</table> +
(1 row)
CREATE TABLE xpath_test (id integer NOT NULL, t xml);
INSERT INTO xpath_test VALUES (1, '<doc><int>1</int></doc>');
SELECT * FROM xpath_table('id', 't', 'xpath_test', '/doc/int', 'true')
as t(id int4);
id
----
(0 rows)
SELECT * FROM xpath_table('id', 't', 'xpath_test', '/doc/int', 'true')
as t(id int4, doc int4);
id | doc
----+-----
1 | 1
(1 row)
DROP TABLE xpath_test;
CREATE TABLE xpath_test (id integer NOT NULL, t text);
INSERT INTO xpath_test VALUES (1, '<doc><int>1</int></doc>');
SELECT * FROM xpath_table('id', 't', 'xpath_test', '/doc/int', 'true')
as t(id int4);
id
----
(0 rows)
SELECT * FROM xpath_table('id', 't', 'xpath_test', '/doc/int', 'true')
as t(id int4, doc int4);
id | doc
----+-----
1 | 1
(1 row)
create table articles (article_id integer, article_xml xml, date_entered date);
insert into articles (article_id, article_xml, date_entered)
values (2, '<article><author>test</author><pages>37</pages></article>', now());
SELECT * FROM
xpath_table('article_id',
'article_xml',
'articles',
'/article/author|/article/pages|/article/title',
'date_entered > ''2003-01-01'' ')
AS t(article_id integer, author text, page_count integer, title text);
article_id | author | page_count | title
------------+--------+------------+-------
2 | test | 37 |
(1 row)
-- this used to fail when invoked a second time
select xslt_process('<aaa/>',$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>$$)::xml;
xslt_process
--------------
<aaa/> +
(1 row)
select xslt_process('<aaa/>',$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>$$)::xml;
xslt_process
--------------
<aaa/> +
(1 row)
create table t1 (id integer, xml_data xml);
insert into t1 (id, xml_data)
values
(1, '<attributes><attribute name="attr_1">Some
Value</attribute></attributes>');
create index idx_xpath on t1 ( xpath_string
('/attributes/attribute[@name="attr_1"]/text()', xml_data::text));
SELECT xslt_process('<employee><name>cim</name><age>30</age><pay>400</pay></employee>'::text, $$<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:param name="n1"/>
<xsl:param name="n2"/>
<xsl:param name="n3"/>
<xsl:param name="n4"/>
<xsl:param name="n5" select="'me'"/>
<xsl:template match="*">
<xsl:element name="samples">
<xsl:element name="sample">
<xsl:value-of select="$n1"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n2"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n3"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n4"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n5"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n6"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n7"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n8"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n9"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n10"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n11"/>
</xsl:element>
<xsl:element name="sample">
<xsl:value-of select="$n12"/>
</xsl:element>
</xsl:element>
</xsl:template>
</xsl:stylesheet>$$::text, 'n1="v1",n2="v2",n3="v3",n4="v4",n5="v5",n6="v6",n7="v7",n8="v8",n9="v9",n10="v10",n11="v11",n12="v12"'::text);
xslt_process
------------------------
<samples> +
<sample>v1</sample> +
<sample>v2</sample> +
<sample>v3</sample> +
<sample>v4</sample> +
<sample>v5</sample> +
<sample>v6</sample> +
<sample>v7</sample> +
<sample>v8</sample> +
<sample>v9</sample> +
<sample>v10</sample>+
<sample>v11</sample>+
<sample>v12</sample>+
</samples> +
(1 row)
-- xpath_nodeset()
SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages')
FROM articles;
xpath_nodeset
----------------------------------------
<author>test</author><pages>37</pages>
(1 row)
SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
'item_without_toptag')
FROM articles;
xpath_nodeset
------------------------------------------------------------------------------------------------------------------------------
<item_without_toptag><author>test</author></item_without_toptag><item_without_toptag><pages>37</pages></item_without_toptag>
(1 row)
SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
'result', 'item')
FROM articles;
xpath_nodeset
-----------------------------------------------------------------------------------
<result><item><author>test</author></item><item><pages>37</pages></item></result>
(1 row)
-- xpath_list()
SELECT xpath_list(article_xml::text, '/article/author|/article/pages')
FROM articles;
xpath_list
------------
test,37
(1 row)
SELECT xpath_list(article_xml::text, '/article/author|/article/pages', '|')
FROM articles;
xpath_list
------------
test|37
(1 row)
-- possible security exploit
SELECT xslt_process('<xml><foo>Hello from XML</foo></xml>',
$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:sax="http://icl.com/saxon"
extension-element-prefixes="sax">
<xsl:template match="//foo">
<sax:output href="0wn3d.txt" method="text">
<xsl:value-of select="'0wn3d via xml2 extension and libxslt'"/>
<xsl:apply-templates/>
</sax:output>
</xsl:template>
</xsl:stylesheet>$$);
ERROR: failed to apply stylesheet
|
