Package net.sf.saxon.java
Class JavaPlatform
java.lang.Object
net.sf.saxon.java.JavaPlatform
- All Implemented Interfaces:
Platform
Implementation of the Platform class containing methods specific to the Java platform
(as distinct from .NET). This is a singleton class with no instance data.
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Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionThe constructor is called during the static initialization of the Configuration -
Method Summary
Modifier and TypeMethodDescriptionvoid
addFunctionLibraries
(FunctionLibraryList list, Configuration config, int hostLanguage) Add the platform-specific function libraries to a function library list.boolean
canReturnCollationKeys
(StringCollator collation) Given a collation, determine whether it is capable of returning collation keys.compileRegularExpression
(Configuration config, CharSequence regex, String flags, String hostLanguage, List<String> warnings) Compile a regular expressiongetCollationKey
(SimpleCollation namedCollation, String value) Given a collation, get a collation key.getExternalObjectType
(Configuration config, String uri, String localName) Get a SchemaType representing a wrapped external (Java or .NET) objectgetInstallationDirectory
(String edition, Configuration config) Return the name of the directory in which the software is installed (if available)getParserSource
(PipelineConfiguration pipe, StreamSource input, int validation, boolean dtdValidation) Convert a StreamSource to either a SAXSource or a PullSource, depending on the native parser of the selected platformGet a suffix letter to add to the Saxon version number to identify the platformGet the platform versionboolean
No ICU featuresboolean
Indicate whether the ICU library is available and supports Numberersvoid
initialize
(Configuration config) Perform platform-specific initialization of the configurationboolean
isDotNet()
Return true if this is the .NET platformboolean
isJava()
Return true if this is the Java platformboolean
JAXPStaticContextCheck
(RetainedStaticContext retainedStaticContext, StaticContext sc) Checks if the supplied static context is an instance of the JAXP static context.Get a parser by instantiating the SAXParserFactoryGet a parser suitable for parsing XML fragmentsmakeCollation
(Configuration config, Properties props, String uri) Obtain a collation with a given set of properties.Make an instance of the default module URI resolver for this platformmakeUcaCollator
(String uri, Configuration config) If available, make a collation using the ICU-J Libraryvoid
Register all the external object models that are provided as standard with the relevant edition of Saxon for this Configurationvoid
Set the default XML parser to be loaded by the SAXParserFactory on this platform.
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Field Details
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tryJdk9
static boolean tryJdk9
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Constructor Details
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JavaPlatform
public JavaPlatform()The constructor is called during the static initialization of the Configuration
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Method Details
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JAXPStaticContextCheck
public boolean JAXPStaticContextCheck(RetainedStaticContext retainedStaticContext, StaticContext sc) Checks if the supplied static context is an instance of the JAXP static context. On Java we create namespace information from the JAXP XPath static context. On the .NET platform we do nothing.- Specified by:
JAXPStaticContextCheck
in interfacePlatform
- Parameters:
retainedStaticContext
-sc
-- Returns:
- boolean
- Since:
- 9.7.0.5
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initialize
Perform platform-specific initialization of the configuration- Specified by:
initialize
in interfacePlatform
- Parameters:
config
- the Saxon Configuration
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isJava
public boolean isJava()Return true if this is the Java platform -
isDotNet
public boolean isDotNet()Return true if this is the .NET platform -
getPlatformVersion
Get the platform version- Specified by:
getPlatformVersion
in interfacePlatform
- Returns:
- the version of the platform, for example "Java version 1.5.09"
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getPlatformSuffix
Get a suffix letter to add to the Saxon version number to identify the platform- Specified by:
getPlatformSuffix
in interfacePlatform
- Returns:
- "J" for Java, "N" for .NET
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loadParser
Get a parser by instantiating the SAXParserFactory- Specified by:
loadParser
in interfacePlatform
- Returns:
- the parser (XMLReader)
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loadParserForXmlFragments
Get a parser suitable for parsing XML fragmentsFor background, see bugs 4127 and 4253. The problem is that to implement parse-xml-fragment(), we need to set an EntityResolver on the returned parser. But if an Apache catalog resolver is in use, the JAXP system properties may be set so that JAXP returns a custom XMLReader supplied by the catalog resolver, and that XMLReader ignores any attempt to set an EntityResolver. So we bypass JAXP and try to load the built-in parser within the JDK, which we know we can trust; only if this fails (presumably because this is not the Oracle JDK) do we fall back to using a JAXP-supplied parser. And if this turns out to ignore
setEntityResolver()
calls, we're hosed.- Specified by:
loadParserForXmlFragments
in interfacePlatform
- Returns:
- the parser (XMLReader)
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getParserSource
public Source getParserSource(PipelineConfiguration pipe, StreamSource input, int validation, boolean dtdValidation) Convert a StreamSource to either a SAXSource or a PullSource, depending on the native parser of the selected platform- Specified by:
getParserSource
in interfacePlatform
- Parameters:
pipe
- the pipeline configurationinput
- the supplied StreamSourcevalidation
- indicates whether schema validation is requireddtdValidation
- indicates whether DTD validation is required- Returns:
- the PullSource or SAXSource, initialized with a suitable parser, or the original input Source, if now special handling is required or possible. This implementation always returns the original input unchanged.
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makeCollation
public StringCollator makeCollation(Configuration config, Properties props, String uri) throws XPathException Obtain a collation with a given set of properties. The set of properties is extensible and variable across platforms. Common properties with example values include lang=ed-GB, strength=primary, case-order=upper-first, ignore-modifiers=yes, alphanumeric=yes. Properties that are not supported are generally ignored; however some errors, such as failing to load a requested class, are fatal.- Specified by:
makeCollation
in interfacePlatform
- Parameters:
config
- the configuration objectprops
- the desired properties of the collationuri
- the collation URI- Returns:
- a collation with these properties
- Throws:
XPathException
- if a fatal error occurs
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canReturnCollationKeys
Given a collation, determine whether it is capable of returning collation keys. The essential property of collation keys is that if two values are equal under the collation, then the collation keys are equal under the equals() method.- Specified by:
canReturnCollationKeys
in interfacePlatform
- Parameters:
collation
- the collation, provided as a Comparator- Returns:
- true if this collation can supply collation keys
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getCollationKey
Given a collation, get a collation key. The essential property of collation keys is that if two values are equal under the collation, then the collation keys are compare correctly under the equals() method.- Specified by:
getCollationKey
in interfacePlatform
- Parameters:
namedCollation
- the collation in usevalue
- the string whose collation key is required- Returns:
- a representation of the collation key, such that two collation keys are equal() if and only if the string values they represent are equal under the specified collation.
- Throws:
ClassCastException
- if the collation is not one that is capable of supplying collation keys (this should have been checked in advance)
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hasICUCollator
public boolean hasICUCollator()No ICU features- Specified by:
hasICUCollator
in interfacePlatform
- Returns:
- true if the ICU library class for collations appears to be loaded
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hasICUNumberer
public boolean hasICUNumberer()Description copied from interface:Platform
Indicate whether the ICU library is available and supports Numberers- Specified by:
hasICUNumberer
in interfacePlatform
- Returns:
- true if the ICU library class for rule-based numbering appears to be loaded
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makeUcaCollator
If available, make a collation using the ICU-J Library- Specified by:
makeUcaCollator
in interfacePlatform
- Parameters:
uri
- the collation URI (which will always be a UCA collation URI as defined in XSLT 3.0)config
- the Saxon configuration- Returns:
- the collation, or null if not available
- Throws:
XPathException
- if the URI is malformed in some way
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compileRegularExpression
public RegularExpression compileRegularExpression(Configuration config, CharSequence regex, String flags, String hostLanguage, List<String> warnings) throws XPathException Compile a regular expression- Specified by:
compileRegularExpression
in interfacePlatform
- Parameters:
config
- the Saxon configurationregex
- the regular expression as a stringflags
- the value of the flags attributehostLanguage
- one of "XSD10", "XSD11", "XP20" or "XP30". Also allow combinations, e.g. "XP20/XSD11".warnings
- if supplied, may capture warnings from the regular expression compiler- Returns:
- the compiled regular expression
- Throws:
XPathException
- if the regular expression or the flags are invalid
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addFunctionLibraries
Add the platform-specific function libraries to a function library list. This version of the method does nothing- Parameters:
list
- the function library list that is to be extendedconfig
- the ConfigurationhostLanguage
- the host language, for example Configuration.XQUERY
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getExternalObjectType
Description copied from interface:Platform
Get a SchemaType representing a wrapped external (Java or .NET) object- Specified by:
getExternalObjectType
in interfacePlatform
- Parameters:
config
- the Saxon Configurationuri
- the namespace URI of the schema typelocalName
- the local name of the schema type- Returns:
- the SchemaType object representing this type
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getInstallationDirectory
Return the name of the directory in which the software is installed (if available)- Specified by:
getInstallationDirectory
in interfacePlatform
- Parameters:
edition
- The edition of the software that is loaded ("HE", "PE", or "EE")config
- the Saxon configuration- Returns:
- the name of the directory in which Saxon is installed, if available, or null otherwise
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registerAllBuiltInObjectModels
Register all the external object models that are provided as standard with the relevant edition of Saxon for this Configuration- Specified by:
registerAllBuiltInObjectModels
in interfacePlatform
- Parameters:
config
- the Saxon configuration- Since:
- 9.3
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setDefaultSAXParserFactory
Set the default XML parser to be loaded by the SAXParserFactory on this platform. Needed because the Apache catalog resolver uses the SAXParserFactory to instantiate a parser, and if not customized this causes a failure on the .NET platform.- Specified by:
setDefaultSAXParserFactory
in interfacePlatform
- Parameters:
config
- the Saxon configuration- Since:
- 9.4
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makeStandardModuleURIResolver
Description copied from interface:Platform
Make an instance of the default module URI resolver for this platform- Specified by:
makeStandardModuleURIResolver
in interfacePlatform
- Parameters:
config
- the Saxon configuration- Returns:
- an instance of ModuleURIResolver
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