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Using Temporary Trees in XSLT Oracle XDK

вторник, 16 ноября 2010 г. Оставить комментарий

In a previous post, I showed you how to create your own transformer xslt, use the Oracle XDK.

Consider the new features that give us their own transformer.

All features can be read here

Now Let's consider "Temporary trees".

In the first version of xslt, you can use the built-in extension must be used ora:node-set.


select ora_20000_xmlutility.XMLTransformClob
(xml_sample.xmltext,
q'~<?xml version="1.0" encoding="Windows-1251"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ora="http://www.oracle.com/XSL/Transform/java"
version="1.0">

<xsl:output method="xml" indent="yes"/>

<xsl:variable name="v-genre-type">
<genre>
<id>1</id>
<name>Computer</name>
</genre>
<genre>
<id>2</id>
<name>Fantasy</name>
</genre>
<genre>
<id>3</id>
<name>Romance</name>
</genre>
<genre>
<id>4</id>
<name>Horror</name>
</genre>
<genre>
<id>5</id>
<name>Science Fiction</name>
</genre>
</xsl:variable>

<xsl:template match="*">
<xsl:element name="{local-name()}">
<xsl:apply-templates select="node()|@*" />
</xsl:element>
</xsl:template>

<xsl:template match="genre">
<xsl:variable name="v-genre-value"><xsl:value-of select="."/></xsl:variable>
<xsl:element name="{local-name()}"><xsl:value-of select="ora:node-set($v-genre-type)/genre[name=$v-genre-value]/id"/></xsl:element>
</xsl:template>

<xsl:template match="@*">
<xsl:attribute name="{local-name()}"><xsl:value-of select="."/></xsl:attribute>
</xsl:template>

</xsl:stylesheet>~'
)
from xml_sample;

Result:


<?xml version="1.0" encoding="UTF-8"?>
<catalog>
<book id="bk101">
<author>Gambardella, Matthew</author>
<title>XML Developer's Guide</title>
<genre>1</genre>
<price>44.95</price>
<publish_date>2000-10-01</publish_date>
<description>An in-depth look at creating applications
with XML.</description>
</book>
<book id="bk102">
<author>Ralls, Kim</author>
<title>Midnight Rain</title>
<genre>2</genre>
<price>5.95</price>
<publish_date>2000-12-16</publish_date>
<description>A former architect battles corporate zombies,
an evil sorceress, and her own childhood to become queen
of the world.</description>
</book>
<book id="bk103">
<author>Corets, Eva</author>
<title>Maeve Ascendant</title>
<genre>2</genre>
<price>5.95</price>
<publish_date>2000-11-17</publish_date>
<description>After the collapse of a nanotechnology
society in England, the young survivors lay the
foundation for a new society.</description>
</book>
<book id="bk104">
<author>Corets, Eva</author>
<title>Oberon's Legacy</title>
<genre>2</genre>
<price>5.95</price>
<publish_date>2001-03-10</publish_date>
<description>In post-apocalypse England, the mysterious
agent known only as Oberon helps to create a new life
for the inhabitants of London. Sequel to Maeve
Ascendant.</description>
</book>
<book id="bk105">
<author>Corets, Eva</author>
<title>The Sundered Grail</title>
<genre>2</genre>
<price>5.95</price>
<publish_date>2001-09-10</publish_date>
<description>The two daughters of Maeve, half-sisters,
battle one another for control of England. Sequel to
Oberon's Legacy.</description>
</book>
<book id="bk106">
<author>Randall, Cynthia</author>
<title>Lover Birds</title>
<genre>3</genre>
<price>4.95</price>
<publish_date>2000-09-02</publish_date>
<description>When Carla meets Paul at an ornithology
conference, tempers fly as feathers get ruffled.</description>
</book>
<book id="bk107">
<author>Thurman, Paula</author>
<title>Splish Splash</title>
<genre>3</genre>
<price>4.95</price>
<publish_date>2000-11-02</publish_date>
<description>A deep sea diver finds true love twenty
thousand leagues beneath the sea.</description>
</book>
<book id="bk108">
<author>Knorr, Stefan</author>
<title>Creepy Crawlies</title>
<genre>4</genre>
<price>4.95</price>
<publish_date>2000-12-06</publish_date>
<description>An anthology of horror stories about roaches,
centipedes, scorpions and other insects.</description>
</book>
<book id="bk109">
<author>Kress, Peter</author>
<title>Paradox Lost</title>
<genre>5</genre>
<price>6.95</price>
<publish_date>2000-11-02</publish_date>
<description>After an inadvertant trip through a Heisenberg
Uncertainty Device, James Salway discovers the problems
of being quantum.</description>
</book>
<book id="bk110">
<author>O'Brien, Tim</author>
<title>Microsoft .NET: The Programming Bible</title>
<genre>1</genre>
<price>36.95</price>
<publish_date>2000-12-09</publish_date>
<description>Microsoft's .NET initiative is explored in
detail in this deep programmer's reference.</description>
</book>
<book id="bk111">
<author>O'Brien, Tim</author>
<title>MSXML3: A Comprehensive Guide</title>
<genre>1</genre>
<price>36.95</price>
<publish_date>2000-12-01</publish_date>
<description>The Microsoft MSXML3 parser is covered in
detail, with attention to XML DOM interfaces, XSLT processing,
SAX and more.</description>
</book>
<book id="bk112">
<author>Galos, Mike</author>
<title>Visual Studio 7: A Comprehensive Guide</title>
<genre>1</genre>
<price>49.95</price>
<publish_date>2001-04-16</publish_date>
<description>Microsoft Visual Studio 7 is explored in depth,
looking at how Visual Basic, Visual C++, C#, and ASP+ are
integrated into a comprehensive development
environment.</description>
</book>
</catalog>

The second version of xslt, Temporary trees are automatically converted into node-set.


select ora_20000_xmlutility.XMLTransformClob
(xml_sample.xmltext,
q'~<?xml version="1.0" encoding="Windows-1251"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ora="http://www.oracle.com/XSL/Transform/java"
version="2.0">

<xsl:output method="xml" indent="yes"/>

<xsl:variable name="v-genre-type">
<genre>
<id>1</id>
<name>Computer</name>
</genre>
<genre>
<id>2</id>
<name>Fantasy</name>
</genre>
<genre>
<id>3</id>
<name>Romance</name>
</genre>
<genre>
<id>4</id>
<name>Horror</name>
</genre>
<genre>
<id>5</id>
<name>Science Fiction</name>
</genre>
</xsl:variable>

<xsl:template match="*">
<xsl:element name="{local-name()}">
<xsl:apply-templates select="node()|@*" />
</xsl:element>
</xsl:template>

<xsl:template match="genre">
<xsl:variable name="v-genre-value"><xsl:value-of select="."/></xsl:variable>
<xsl:element name="{local-name()}"><xsl:value-of select="$v-genre-type/genre[name=$v-genre-value]/id"/></xsl:element>
</xsl:template>

<xsl:template match="@*">
<xsl:attribute name="{local-name()}"><xsl:value-of select="."/></xsl:attribute>
</xsl:template>

</xsl:stylesheet>~'
)
from xml_sample;

Additional links:

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