Network Deployment (Distributed operating systems), v8.0 > Develop and deploying applications > XML applications > Use the XML API to perform operations > Performing basic operations > Overview of the XML API


Conformance statements

The processor is an implementation of the XSL Transformations (XSLT) v2.0 and the XQuery 1.0 W3C recommendations. See section 21 of the XSLT 2.0 recommendation and section 5 of the XQuery 1.0 recommendation for more information about conformance criteria for processors.

It implements the first editions of the XSLT 2.0, XQuery 1.0, and XPath 2.0 recommendations, with the levels of conformance described in this article, as well as all errata published in the proposed edited recommendations of the second editions of the XSLT 2.0, XQuery 1.0, XPath 2.0 and ancillary recommendations.

This includes support for the fn:element-with-id function and the XSLT xsl:supports-namespace-axis system property.


XSLT 2.0 conformance

The processor conforms to XSLT 2.0 as a schema-aware XSLT processor. It also supports the following optional features of XSLT 2.0:

For a complete list of implementation-defined features, read XSLT 2.0, XPath 2.0, and XQuery 1.0 implementation-specific behaviors.


XQuery 1.0 conformance

The processor has minimal conformance to XQuery 1.0. It also supports the following optional features of XQuery 1.0:

For a complete list of implementation-defined features, read XSLT 2.0, XPath 2.0, and XQuery 1.0 implementation-specific behaviors.

Data Model conformance

The processor supports normative construction of an instance of the XQuery/XPath Data Model from an Infoset or from a PSVI. By default, construction of the instance of the Data Model will be from an Infoset. If the setValidating method of an XFactory instance is called with a value of true, any instance of the Data Model that the processor creates will be constructed from PSVI.

For more information, Performing basic XQuery operations.

The processor supports both XML 1.0 and XML 1.1.


Extension support

The processor supports the following additional extensions:

xalan:indent-amount extension attribute of xsl:output

If the value of the indent serialization parameter is yes for an explicit or an implicit xsl:result-document instruction in an XSLT stylesheet, the processor will use the value of any indent-amount extension attribute on the associated xsl:output declaration to determine the amount by which indentation should be increased for every level of element nesting in the serialized result.

The indent-amount extension attribute is in the http://xml.apache.org/xalan namespace.

EXSLT extension functions

In order to facilitate migration of XSLT 1.0 stylesheets, the processor supports many extension functions defined by the EXSLT community initiative. In many cases, these functions duplicate functions that have been included in XSLT 2.0, XPath 2.0 and XQuery 1.0.

For more information about EXSLT, see the EXSLT website.

EXSLT common functions

The processor supports only the node-set common extension function. This function is made redundant by the fact that XSLT 2.0 does not restrict the operations that can be performed on temporary trees.

The EXSLT common functions are in the namespace http://exslt.org/common.

EXSLT dates-and-times functions

The EXSLT dates-and-times functions provide facilities for manipulating date and time values. Most of these functions are redundant with the inclusion of the new date and time data types from XML Schema in XSLT 2.0, XQuery 1.0, and XPath 2.0.

The EXSLT dates-and-times functions are in the namespace http://exslt.org/dates-and-times.

EXSLT dynamic functions

The processor supports only the evaluate dynamic extension function.

The EXSLT dynamic functions are in the namespace http://exslt.org/dynamic.

EXSLT math functions

The EXSLT math functions provide facilities for several commonly used mathematical operations. Only the math:abs, math:max, math:min, and math:highest functions have been made redundant in XSLT 2.0, XQuery 1.0, and XPath 2.0.

The EXSLT math functions are in the namespace http://exslt.org/math.

EXSLT set functions

The EXSLT set functions define facilities for performing set operations on sequences of nodes. These have been made redundant by the new intersect and except set operations and the < < and >> node comparison operations introduced in XSLT 2.0, XQuery 1.0, and XPath 2.0.

The EXSLT set functions are in the namespace http://exslt.org/sets.

EXSLT string functions

The EXSLT string functions provide facilities for string manipulation. The tokenize and split functions have been made redundant by the new operations for string manipulation in XSLT 2.0, XQuery 1.0, and XPath 2.0, including the fn:tokenize function and the xsl:analyze-string instruction.

The EXSLT string functions are in the namespace http://exslt.org/strings.

xalan:redirect extension element

The redirect extension element provides a means of directing output from an XSLT stylesheet to more than one output destination. This extension element is made redundant by the new xsl:result-document instruction of XSLT 2.0.

The redirect extension element is in the http://xml.apache.org/xalan namespace.

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