Package	Description
com.saxonica	This package together with its subpackages contains the code of Saxon-PE and Saxon-EE, other than the code that is in common with the open-source version Saxon-HE.
com.saxonica.config	This package contains classes supporting configuration of Saxon-PE and Saxon-EE.
com.saxonica.config.pe	This package contains classes supporting configuration of Saxon-PE.
com.saxonica.ee.bytecode	This package and its subpackages contain code responsible for bytecode generation under Saxon-EE.
com.saxonica.ee.bytecode.converter	This package contains classes responsible for generating bytecode to effect data type conversions, for example boolean to double conversion.
com.saxonica.ee.bytecode.iter	This package contains abstract superclasses for generated bytecode classes providing custom iterators.
com.saxonica.ee.bytecode.map	This package contains abstract superclasses for generating bytecode classes that provide custom mapping functions.
com.saxonica.ee.bytecode.simtype	This package contains classes used for generation of bytecode to validate strings against user-defined simple types.
com.saxonica.ee.bytecode.util	This package contains utility classes supporting the generation of bytecode and the interface with the ASM library.
com.saxonica.ee.config	This package contains classes supporting configuration of Saxon-EE.
com.saxonica.ee.domino	This package is an implementation of a tree structure allowing efficient navigation of DOM trees.
com.saxonica.ee.extfn	This package contains implementations of extension functions that are available only in Saxon-EE.
com.saxonica.ee.extfn.js	This package contains implementations of extension functions and extension instructions that are available only in Saxon-JS.
com.saxonica.ee.jaxp	This package contains the Saxon implementation of the JAXP schema validation API.
com.saxonica.ee.optim	This package contains classes used to support optimized expressions and instructions that are specific to Saxon-EE, and that don't fit conveniently into a more specialized category (such as streaming).
com.saxonica.ee.s9api	This package contains classes used to support the Saxon-EE specific parts of the s9api API, in particular the parts concerned with schema validation.
com.saxonica.ee.schema	This package contains classes used to represent the information in a schema, that is, the schema components.
com.saxonica.ee.schema.fsa	The package com.saxonica.ee.schema.fsa contains classes used to implement the finite state machines used when validating document instances against a schema.
com.saxonica.ee.schema.sdoc	This package contains code used to import a schema.
com.saxonica.ee.stream	This package and its subpackages contain classes used to support streaming and document projection.
com.saxonica.ee.stream.adjunct	This package contains classes used to support streaming.
com.saxonica.ee.stream.feed	This package contains classes used to support streaming.
com.saxonica.ee.stream.om	The package com.saxonica.ee.stream.om contains internal code to support executing of streaming templates in XSLT.
com.saxonica.ee.stream.watch	This package contains defines the two interfaces Watch and WatchMaker, and various implementations of these interfaces.
com.saxonica.ee.trans	This package contains classes supporting optimized XSLT transformation in Saxon-EE.
com.saxonica.ee.update	This package contains classes used to support XQuery Update.
com.saxonica.ee.validate	The validation package contains classes used to validate document instances against a schema.
com.saxonica.ee.xtupdate	This package contains classes used to support the compile-time extension instructions enabling the functionality of XQuery Update to be used within XSLT.
com.saxonica.expr	This package contains classes used to support expressions and instructions that are new in XPath 3.0, XQuery 3.0, or XSLT 3.0, and that don't fit conveniently into a more specialized category (such as streaming).
com.saxonica.expr.sort	This package contains classes used to support the use of the ICU library for collating strings, in particular, for the implementation of the Unicode Collation Algorithm.
com.saxonica.functions.extfn	The package com.saxonica.extfn contains implementations of extension functions in the Saxon namespace.
com.saxonica.functions.extfn.EXPathArchive	This package contains implementations of extension functions in the EXPath archive module.
com.saxonica.functions.registry	This package contains classes used to manage the collections of system functions available in various processing environments.
com.saxonica.functions.sql	This package contains implementations of extension functions allowing access to SQL databases.
com.saxonica.serialize	This package contains additions to the serializer that are specific to Saxon-PE and Saxon-EE.
com.saxonica.trans	This package contains classes used for XSLT transformation in Saxon-PE and Saxon-EE.
com.saxonica.xqj	This package contains an implementation of the XQJ specification defined in JSR 225.
com.saxonica.xqj.pull	This package extends the pull API for Saxon that is provided in package net.sf.saxon.pull in Saxon-HE.
com.saxonica.xsltextn	This package contains classes used at compile time to support extensions to XSLT beyond 2.0: both facilities in the working draft of XSLT 3.0, and extensions specific to Saxon.
com.saxonica.xsltextn.instruct	This package contains implementations of XSLT extension instructions available in Saxon-PE and Saxon-EE.
com.saxonica.xsltextn.pedigree	This package contains classes associated with the implementation of the saxon:deep-update extension instruction.
com.saxonica.xsltextn.style	This package contains implementations of XSLT extension instructions available in Saxon-PE and Saxon-EE.
javax.xml.xquery
net.sf.saxon	This package provides the core classes of the SAXON XSLT library.
net.sf.saxon.dom	This package provides glue classes that enable Saxon to process a source document supplied as a DOM tree in the form of a DOMSource object; it also provides classes that present a DOM view of Saxon's native tree structures.
net.sf.saxon.event	This package provides classes that feed SAX-like events from one tree to another.
net.sf.saxon.expr	This package provides classes associated with XPath expression handling.
net.sf.saxon.expr.accum	This package contains classes used to implement XSLT 3.0 accumulators, in particular, accumulators for non-streamed documents.
net.sf.saxon.expr.compat	This package contains classes concerned with evaluation of expressions in XPath 1.0 compatibility mode.
net.sf.saxon.expr.flwor	This package contains classes responsible for evaluation of FLWOR expressions.
net.sf.saxon.expr.instruct	This package provides classes for the compiled representation of the various elements and other instructions found in an XSLT stylesheet.
net.sf.saxon.expr.number	This package provides classes associated with numbering and the xsl:number instruction.
net.sf.saxon.expr.oper	This package contains a class used to handle expressions with an array of operands.
net.sf.saxon.expr.parser	This package contains classes associated with parsing and general static analysis of XPath expressions.
net.sf.saxon.expr.sort	This package provides utility routines for sorting and grouping.
net.sf.saxon.functions	This package provides implementations of all the core functions available for use in XPath expressions.
net.sf.saxon.functions.hof	The package com.saxonica.hof contains code to support higher-order functions.
net.sf.saxon.functions.registry	This package contains libraries of function signatures for the standard functions available in various Saxon-HE environments.
net.sf.saxon.gizmo	This package provides supporting code for the Gizmo utility, found at net.sf.saxon.Gizmo.
net.sf.saxon.java	This package contains Saxon code that is specific to the Java platform, as distinct from .NET
net.sf.saxon.jaxp	This package contains classes that provide Saxon's implementation of JAXP interfaces.
net.sf.saxon.lib	This package collects together interfaces intended for user applications to implement in order to customize Saxon's behavior, default implementations of these interfaces, and classes containing constants that are used in public Saxon interfaces.
net.sf.saxon.ma	This package contains classes associated with the implementation of maps, arrays, and JSON for XSLT 3.0 and XPath 3.1.
net.sf.saxon.ma.arrays	This package implements arrays, as introduced in XPath/XQuery 3.1: arrays provide a list-like data structure that (unlike sequences) allows nesting.
net.sf.saxon.ma.json	This package implements support for JSON: it includes classes that implement the XPath 3.1 functions for JSON, and underlying support code for parsing and serializating JSON.
net.sf.saxon.ma.map	This package implements maps, as introduced in XSLT 3.0 and XQuery 3.1: maps provide a dictionary-like data structure.
net.sf.saxon.ma.parray	This package contains an implementation of persistent immutable arrays.
net.sf.saxon.ma.trie	This package contains a general-purpose implementation of immutable hash trie maps, used to underpin the Saxon implementation of XSLT 3.0 maps.
net.sf.saxon.om	This package defines the interface to the Saxon tree structure.
net.sf.saxon.option.axiom	This package contains classes that interface Saxon to the Apache AXIOM tree model.
net.sf.saxon.option.dom4j	This package provides glue classes that enable Saxon to process a source document supplied as a DOM4J tree (see https://dom4j.github.io).
net.sf.saxon.option.exslt	This package provides implementations of the functions defined in EXSLT.
net.sf.saxon.option.jdom2	This package contains classes that interface Saxon to the JDOM2 tree model.
net.sf.saxon.option.local	This package contains classes responsible for localizing the output of functions such as format-dateTime and format-integer into various languages.
net.sf.saxon.option.sql	This package provides some sample extension elements for loading data into an SQL database.
net.sf.saxon.option.xom	This package provides glue classes that enable Saxon to process a source document supplied as a XOM tree (see http://www.cafeconleche.org/XOM).
net.sf.saxon.pattern	This package provides classes associated with XSLT pattern handling.
net.sf.saxon.pull	This package provides classes that interface Saxon to an XML parser that supplies data in the form of a stream of events.
net.sf.saxon.query	This package provides a relatively low-level API for executing XQuery queries directly from a Java application.
net.sf.saxon.regex	This package contains the code to map XML Schema and XPath regular expressions to a regular expression engine of the underlying Java platform.
net.sf.saxon.regex.charclass	This package contains Java classes used to represent character classes in regular expressions.
net.sf.saxon.resource	This package contains Java classes used to represent abstractions of resources of different kinds that can be retrieved as part of a collection (using the fn:collection() function).
net.sf.saxon.s9api	This package provides Saxon's preferred Java API for XSLT, XQuery, XPath, and XML Schema processing.
net.sf.saxon.s9api.streams	This package (introduced in Saxon 9.9) provides methods to manipulate XDM values using Java 8 streams.
net.sf.saxon.sapling	This package defines a public API for constructing trees; it represents trees-under-construction using a lightweight immutable data structure called a sapling; once construction of a sapling tree is complete, it can be copied to form a fully-functional XDM tree in the form of an XdmNode or NodeInfo object.
net.sf.saxon.serialize	This package contains code for serializing trees using the standard W3C-defined serialization methods (xml, html, text, etc).
net.sf.saxon.serialize.charcode	This package provides classes for handling different character sets, especially when serializing the output of a query or transformation.
net.sf.saxon.serialize.codenorm	This package contains the code to implement Unicode normalization.
net.sf.saxon.stax	This package contains classes used to connect to StAX (pull-parser) events for input and output.
net.sf.saxon.style	This package provides classes used during the compilation of an XSLT stylesheet.
net.sf.saxon.sxpath	This package originally provided an alternative API for executing XPath expressions directly from a Java application.
net.sf.saxon.trace	This package provides an interface to Saxon tracing and debugging capabilities.
net.sf.saxon.trans	This package provides a miscellaneous collection of helper classes for XSLT transformation.
net.sf.saxon.trans.packages	This package contains classes used to support creation of XSLT 3.0 packages.
net.sf.saxon.trans.rules	This package provides classes to implement matching of patterns for selection of template rules within a mode.
net.sf.saxon.tree	This package contains subpackages containing the code for different tree models.
net.sf.saxon.tree.iter	This package defines implementations and subinterfaces of the interface SequenceIterator, which is used to iterate over an XDM sequence.
net.sf.saxon.tree.jiter	This package defines utility classes designed to work with Java iterators, that is, implementations of java.util.Iterator (not to be confused with Saxon's SequenceIterator class).
net.sf.saxon.tree.linked	This package defines the implementation of the so-called "linked tree" structure.
net.sf.saxon.tree.tiny	This package is an implementation of the Saxon internal tree structure, designed to minimize memory usage, and the costs of allocating and garbage-collecting Java objects.
net.sf.saxon.tree.util	This package defines a number of utility and helper classes for implementing tree models.
net.sf.saxon.tree.wrapper	This package defines a number of implementations of "virtual nodes" implemented as wrappers around other nodes.
net.sf.saxon.type	This package contains classes that implement the XPath 2.0 and 3.1 type system.
net.sf.saxon.value	This package provides classes representing XPath values (that is, the results of an expression).
net.sf.saxon.xpath	This package is Saxon's implementation of the JAXP API designed for executing XPath 1.0 expressions directly from a Java application.
net.sf.saxon.z	This package provides utility routines for handling integer sets and maps.