## net.sf.saxon.java
Class JavaPlatform

    java.lang.Object
      net.sf.saxon.java.JavaPlatform

All Implemented Interfaces:
  Serializable, Platform

Direct Known Subclasses:
  JavaPlatformPE

    public class JavaPlatform

extends Object
implements 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.

See Also:
  Serialized Form

Constructor Summary
`JavaPlatform()` The constructor is called during the static initialization of the Configuration, by virtue of the class name appearing in the edition.properties file within the issued JAR file

Method Summary
`void` `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.
`Object` `getCollationKey(NamedCollation namedCollation, String value)` Given a collation, get a collation key.
`SchemaType` `getExternalObjectType(Configuration config, String uri, String localName)` Get a SchemaType representing a wrapped external (Java or .NET) object
`String` `getInstallationDirectory(String edition)` Return the name of the directory in which the software is installed (if available)
`Source` `getParserSource(PipelineConfiguration pipe, StreamSource input, int validation, boolean dtdValidation, int stripspace)` Convert a StreamSource to either a SAXSource or a PullSource, depending on the native parser of the selected platform
`String` `getPlatformSuffix()` Get a suffix letter to add to the Saxon version number to identify the platform
`String` `getPlatformVersion()` Get the platform version
`String` `getVerifierClassName()` Get the verifier appropriate to the platform
`void` `initialize(Configuration config)` Perform platform-specific initialization of the configuration
`boolean` `isDotNet()` Return true if this is the .NET platform
`boolean` `isJava()` Return true if this is the Java platform
`XMLReader` `loadParser()` Get a parser by instantiating the SAXParserFactory
`StringCollator` `makeCollation(Configuration config, Properties props, String uri)` Obtain a collation with a given set of properties.
`void` `registerAllBuiltInObjectModels(Configuration config)` Register all the external object models that are provided as standard with the relevant edition of Saxon for this Configuration

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### JavaPlatform

    public JavaPlatform()

  The constructor is called during the static initialization of the Configuration, by virtue of the class name appearing in the edition.properties file within the issued JAR file

Method Detail

### initialize

    public void initialize(Configuration config)

  Perform platform-specific initialization of the configuration

  Specified by:
    `initialize` in interface `Platform`
  Parameters:
    `config` - the Saxon Configuration

### isJava

    public boolean isJava()

  Return true if this is the Java platform

  Specified by:
    `isJava` in interface `Platform`
  Returns:
    true if this is the Java platform

### isDotNet

    public boolean isDotNet()

  Return true if this is the .NET platform

  Specified by:
    `isDotNet` in interface `Platform`
  Returns:
    true if this is the .NET platform

### getVerifierClassName

    public String getVerifierClassName()

  Get the verifier appropriate to the platform

  Specified by:
    `getVerifierClassName` in interface `Platform`

### getPlatformVersion

    public String getPlatformVersion()

  Get the platform version

  Specified by:
    `getPlatformVersion` in interface `Platform`
  Returns:
    the version of the platform, for example "Java version 1.5.09"

### getPlatformSuffix

    public String getPlatformSuffix()

  Get a suffix letter to add to the Saxon version number to identify the platform

  Specified by:
    `getPlatformSuffix` in interface `Platform`
  Returns:
    "J" for Java, "N" for .NET

### loadParser

    public XMLReader loadParser()

  Get a parser by instantiating the SAXParserFactory

  Specified by:
    `loadParser` in interface `Platform`
  Returns:
    the parser (XMLReader)

### getParserSource

    public Source getParserSource(PipelineConfiguration pipe,
                                  StreamSource input,
                                  int validation,
                                  boolean dtdValidation,
                                  int stripspace)

  Convert a StreamSource to either a SAXSource or a PullSource, depending on the native parser of the selected platform

  Specified by:
    `getParserSource` in interface `Platform`
  Parameters:
    `pipe` - the pipeline configuration
    `input` - the supplied StreamSource
    `validation` - indicates whether schema validation is required
    `dtdValidation` - indicates whether DTD validation is required
    `stripspace` - indicates whether whitespace text nodes should be stripped
  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.

### 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 interface `Platform`
  Parameters:
    `config` - the configuration object
    `props` - the desired properties of the collation
    `uri` - the collation URI
  Returns:
    a collation with these properties
  Throws:
    `XPathException` - if a fatal error occurs

### canReturnCollationKeys

    public boolean canReturnCollationKeys(StringCollator collation)

  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 interface `Platform`
  Parameters:
    `collation` - the collation, provided as a Comparator
  Returns:
    true if this collation can supply collation keys

### getCollationKey

    public Object getCollationKey(NamedCollation namedCollation,
                                  String value)

  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 interface `Platform`
  Parameters:
    `namedCollation` - the collation in use
    `value` - 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)

### addFunctionLibraries

    public void addFunctionLibraries(FunctionLibraryList list,
                                     Configuration config,
                                     int hostLanguage)

  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 extended
    `config` - the Configuration
    `hostLanguage` - the host language, for example Configuration.XQUERY

### getExternalObjectType

    public SchemaType getExternalObjectType(Configuration config,
                                            String uri,
                                            String localName)

  Description copied from interface: `Platform`
  Get a SchemaType representing a wrapped external (Java or .NET) object

  Specified by:
    `getExternalObjectType` in interface `Platform`
  Parameters:
    `config` - the Saxon Configuration
    `uri` - the namespace URI of the schema type
    `localName` - the local name of the schema type
  Returns:
    the SchemaType object representing this type

### getInstallationDirectory

    public String getInstallationDirectory(String edition)

  Return the name of the directory in which the software is installed (if available)

  Specified by:
    `getInstallationDirectory` in interface `Platform`
  Parameters:
    `edition` -
  Returns:
    the name of the directory in which Saxon is installed, if available, or null otherwise

### registerAllBuiltInObjectModels

    public void registerAllBuiltInObjectModels(Configuration config)

  Register all the external object models that are provided as standard with the relevant edition of Saxon for this Configuration

  Specified by:
    `registerAllBuiltInObjectModels` in interface `Platform`
  Since:
    9.3

Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.