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javax.xml.parsers

public abstract Class SAXParserFactory

extends Object
Class Inheritance
Known Direct Subclasses
com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl
Imports
com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl, javax.xml.validation.Schema, org.xml.sax.SAXException, .SAXNotRecognizedException, .SAXNotSupportedException

Defines a factory API that enables applications to configure and obtain a SAX based parser to parse XML documents.
Authors
Jeff Suttor, Neeraj Bajaj
Since
1.4

Field Summary

Modifier and TypeField and Description
private static final String
private boolean
namespaceAware

Should Parsers be namespace aware?

private boolean
validating

Should Parsers be validating?

Constructor Summary

AccessConstructor and Description
protected
SAXParserFactory()

Protected constructor to force use of newInstance().

Method Summary

Modifier and TypeMethod and Description
public abstract boolean

Returns:

Value of the requested property.
getFeature
(String
The name of the property to be retrieved.
name
)

Returns the particular property requested for in the underlying implementation of org.xml.sax.XMLReader.

public Schema

Returns:

the Schema object that was last set through the setSchema(Schema) method, or null if the method was not invoked since a SAXParserFactory is created.
getSchema
()

Gets the Schema object specified through the setSchema(Schema schema) method.

public boolean

Returns:

true if the factory is configured to produce parsers which are namespace aware; false otherwise.
isNamespaceAware
()

Indicates whether or not the factory is configured to produce parsers which are namespace aware.

public boolean

Returns:

true if the factory is configured to produce parsers which validate the XML content during parse; false otherwise.
isValidating
()

Indicates whether or not the factory is configured to produce parsers which validate the XML content during parse.

public boolean

Returns:

current state of XInclude processing
isXIncludeAware
()

Get state of XInclude processing.

private static SAXParserFactory
public static SAXParserFactory

Returns:

A new instance of the SAXParserFactory builtin system-default implementation.
newDefaultInstance
()

Creates a new instance of the SAXParserFactory builtin system-default implementation.

public static SAXParserFactory

Returns:

a new instance of the SAXParserFactory builtin system-default implementation.
newDefaultNSInstance
()

Creates a new NamespaceAware instance of the SAXParserFactory builtin system-default implementation.

public static SAXParserFactory

Returns:

A new instance of a SAXParserFactory.
newInstance
()

Obtains a new instance of a SAXParserFactory.

public static SAXParserFactory

Returns:

New instance of a SAXParserFactory
newInstance
(String
fully qualified factory class name that provides implementation of javax.xml.parsers.SAXParserFactory.
factoryClassName
,
ClassLoader
ClassLoader used to load the factory class. If null current Thread's context classLoader is used to load the factory class.
classLoader
)

Obtain a new instance of a SAXParserFactory from class name.

public static SAXParserFactory

Returns:

a new instance of the SAXParserFactory
newNSInstance
()

Creates a new NamespaceAware instance of a SAXParserFactory.

public static SAXParserFactory

Returns:

a new instance of the SAXParserFactory
newNSInstance
(String
a fully qualified factory class name that provides implementation of javax.xml.parsers.SAXParserFactory.
factoryClassName
,
ClassLoader
the ClassLoader used to load the factory class. If it is null, the current Thread's context classLoader is used to load the factory class.
classLoader
)

Creates a new NamespaceAware instance of a SAXParserFactory from the class name.

public abstract SAXParser

Returns:

A new instance of a SAXParser.
newSAXParser
()

Creates a new instance of a SAXParser using the currently configured factory parameters.

public abstract void
setFeature(String
The name of the feature to be set.
name
,
boolean
The value of the feature to be set.
value
)

Sets the particular feature in the underlying implementation of org.xml.sax.XMLReader.

public void
setNamespaceAware(boolean
true if the parser produced by this code will provide support for XML namespaces; false otherwise.
awareness
)

Specifies that the parser produced by this code will provide support for XML namespaces.

public void
setSchema(Schema
Schema to use, null to remove a schema.
schema
)

Set the Schema to be used by parsers created from this factory.

public void
setValidating(boolean
true if the parser produced by this code will validate documents as they are parsed; false otherwise.
validating
)

Specifies that the parser produced by this code will validate documents as they are parsed.

public void
setXIncludeAware(final boolean
Set XInclude processing to true or false
state
)

Set state of XInclude processing.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

DEFAULT_IMPLback to summary
private static final String DEFAULT_IMPL
namespaceAwareback to summary
private boolean namespaceAware

Should Parsers be namespace aware?

validatingback to summary
private boolean validating

Should Parsers be validating?

Constructor Detail

SAXParserFactoryback to summary
protected SAXParserFactory()

Protected constructor to force use of newInstance().

Method Detail

getFeatureback to summary
public abstract boolean getFeature(String name) throws ParserConfigurationException, SAXNotRecognizedException, SAXNotSupportedException

Returns the particular property requested for in the underlying implementation of org.xml.sax.XMLReader.

Parameters
name:String

The name of the property to be retrieved.

Returns:boolean

Value of the requested property.

Exceptions
ParserConfigurationException:
if a parser cannot be created which satisfies the requested configuration.
SAXNotRecognizedException:
When the underlying XMLReader does not recognize the property name.
SAXNotSupportedException:
When the underlying XMLReader recognizes the property name but doesn't support the property.
See Also
org.xml.sax.XMLReader#getProperty
getSchemaback to summary
public Schema getSchema()

Gets the Schema object specified through the setSchema(Schema schema) method.

Returns:Schema

the Schema object that was last set through the setSchema(Schema) method, or null if the method was not invoked since a SAXParserFactory is created.

Exceptions
UnsupportedOperationException:
When implementation does not override this method
Since
1.5
isNamespaceAwareback to summary
public boolean isNamespaceAware()

Indicates whether or not the factory is configured to produce parsers which are namespace aware.

Returns:boolean

true if the factory is configured to produce parsers which are namespace aware; false otherwise.

isValidatingback to summary
public boolean isValidating()

Indicates whether or not the factory is configured to produce parsers which validate the XML content during parse.

Returns:boolean

true if the factory is configured to produce parsers which validate the XML content during parse; false otherwise.

isXIncludeAwareback to summary
public boolean isXIncludeAware()

Get state of XInclude processing.

Returns:boolean

current state of XInclude processing

Exceptions
UnsupportedOperationException:
When implementation does not override this method
Since
1.5
makeNSAwareback to summary
private static SAXParserFactory makeNSAware(SAXParserFactory spf)
newDefaultInstanceback to summary
public static SAXParserFactory newDefaultInstance()

Creates a new instance of the SAXParserFactory builtin system-default implementation.

Returns:SAXParserFactory

A new instance of the SAXParserFactory builtin system-default implementation.

Since
9
newDefaultNSInstanceback to summary
public static SAXParserFactory newDefaultNSInstance()

Creates a new NamespaceAware instance of the SAXParserFactory builtin system-default implementation. Parsers produced by the factory instance provides support for XML namespaces by default.

Implementation Specification

In addition to creating a factory instance using the same process as newDefaultInstance(), this method must set NamespaceAware to true.

Returns:SAXParserFactory

a new instance of the SAXParserFactory builtin system-default implementation.

Since
13
newInstanceback to summary
public static SAXParserFactory newInstance()

Obtains a new instance of a SAXParserFactory. This method uses the JAXP Lookup Mechanism to determine the SAXParserFactory implementation class to load.

Once an application has obtained a reference to a SAXParserFactory, it can use the factory to configure and obtain parser instances.

Tip for Trouble-shooting

Setting the jaxp.debug system property will cause this method to print a lot of debug messages to System.err about what it is doing and where it is looking at.

If you have problems loading SAXParsers, try:

java -Djaxp.debug=1 YourProgram ....
Returns:SAXParserFactory

A new instance of a SAXParserFactory.

Exceptions
FactoryConfigurationError:
in case of service configuration error or if the implementation is not available or cannot be instantiated.
newInstanceback to summary
public static SAXParserFactory newInstance(String factoryClassName, ClassLoader classLoader)

Obtain a new instance of a SAXParserFactory from class name. This function is useful when there are multiple providers in the classpath. It gives more control to the application as it can specify which provider should be loaded.

Once an application has obtained a reference to a SAXParserFactory it can use the factory to configure and obtain parser instances.

Tip for Trouble-shooting

Setting the jaxp.debug system property will cause this method to print a lot of debug messages to System.err about what it is doing and where it is looking at.

If you have problems, try:

java -Djaxp.debug=1 YourProgram ....
Parameters
factoryClassName:String

fully qualified factory class name that provides implementation of javax.xml.parsers.SAXParserFactory.

classLoader:ClassLoader

ClassLoader used to load the factory class. If null current Thread's context classLoader is used to load the factory class.

Returns:SAXParserFactory

New instance of a SAXParserFactory

Exceptions
FactoryConfigurationError:
if factoryClassName is null, or the factory class cannot be loaded, instantiated.
Since
1.6
See Also
newInstance()
newNSInstanceback to summary
public static SAXParserFactory newNSInstance()

Creates a new NamespaceAware instance of a SAXParserFactory. Parsers produced by the factory instance provides support for XML namespaces by default.

Implementation Specification

In addition to creating a factory instance using the same process as newInstance(), this method must set NamespaceAware to true.

Returns:SAXParserFactory

a new instance of the SAXParserFactory

Exceptions
FactoryConfigurationError:
in case of service configuration error or if the implementation is not available or cannot be instantiated.
Since
13
newNSInstanceback to summary
public static SAXParserFactory newNSInstance(String factoryClassName, ClassLoader classLoader)

Creates a new NamespaceAware instance of a SAXParserFactory from the class name. Parsers produced by the factory instance provides support for XML namespaces by default.

Implementation Specification

In addition to creating a factory instance using the same process as newInstance(java.lang.String, java.lang.ClassLoader), this method must set NamespaceAware to true.

Parameters
factoryClassName:String

a fully qualified factory class name that provides implementation of javax.xml.parsers.SAXParserFactory.

classLoader:ClassLoader

the ClassLoader used to load the factory class. If it is null, the current Thread's context classLoader is used to load the factory class.

Returns:SAXParserFactory

a new instance of the SAXParserFactory

Exceptions
FactoryConfigurationError:
if factoryClassName is null, or the factory class cannot be loaded, instantiated.
Since
13
newSAXParserback to summary
public abstract SAXParser newSAXParser() throws ParserConfigurationException, SAXException

Creates a new instance of a SAXParser using the currently configured factory parameters.

Returns:SAXParser

A new instance of a SAXParser.

Exceptions
ParserConfigurationException:
if a parser cannot be created which satisfies the requested configuration.
SAXException:
for SAX errors.
setFeatureback to summary
public abstract void setFeature(String name, boolean value) throws ParserConfigurationException, SAXNotRecognizedException, SAXNotSupportedException

Sets the particular feature in the underlying implementation of org.xml.sax.XMLReader. A list of the core features and properties can be found at http://www.saxproject.org/

All implementations are required to support the javax.xml.XMLConstants#FEATURE_SECURE_PROCESSING feature. When the feature is

  • true: the implementation will limit XML processing to conform to implementation limits. Examples include entity expansion limits and XML Schema constructs that would consume large amounts of resources. If XML processing is limited for security reasons, it will be reported via a call to the registered org.xml.sax.ErrorHandler#fatalError(SAXParseException exception). See SAXParser parse methods for handler specification.
  • When the feature is false, the implementation will processing XML according to the XML specifications without regard to possible implementation limits.
Parameters
name:String

The name of the feature to be set.

value:boolean

The value of the feature to be set.

Exceptions
ParserConfigurationException:
if a parser cannot be created which satisfies the requested configuration.
SAXNotRecognizedException:
When the underlying XMLReader does not recognize the property name.
SAXNotSupportedException:
When the underlying XMLReader recognizes the property name but doesn't support the property.
NullPointerException:
If the name parameter is null.
See Also
org.xml.sax.XMLReader#setFeature
setNamespaceAwareback to summary
public void setNamespaceAware(boolean awareness)

Specifies that the parser produced by this code will provide support for XML namespaces. By default the value of this is set to false.

Parameters
awareness:boolean

true if the parser produced by this code will provide support for XML namespaces; false otherwise.

setSchemaback to summary
public void setSchema(Schema schema)

Set the Schema to be used by parsers created from this factory.

When a Schema is non-null, a parser will use a validator created from it to validate documents before it passes information down to the application.

When warnings/errors/fatal errors are found by the validator, the parser must handle them as if those errors were found by the parser itself. In other words, if the user-specified org.xml.sax.ErrorHandler is set, it must receive those errors, and if not, they must be treated according to the implementation specific default error handling rules.

A validator may modify the SAX event stream (for example by adding default values that were missing in documents), and a parser is responsible to make sure that the application will receive those modified event stream.

Initially, null is set as the Schema.

This processing will take effect even if the isValidating() method returns false.

It is an error to use the http://java.sun.com/xml/jaxp/properties/schemaSource property and/or the http://java.sun.com/xml/jaxp/properties/schemaLanguage property in conjunction with a non-null Schema object. Such configuration will cause a SAXException exception when those properties are set on a SAXParser.

Note for implementors

A parser must be able to work with any Schema implementation. However, parsers and schemas are allowed to use implementation-specific custom mechanisms as long as they yield the result described in the specification.

Parameters
schema:Schema

Schema to use, null to remove a schema.

Exceptions
UnsupportedOperationException:
When implementation does not override this method
Since
1.5
setValidatingback to summary
public void setValidating(boolean validating)

Specifies that the parser produced by this code will validate documents as they are parsed. By default the value of this is set to false.

Note that "the validation" here means a validating parser as defined in the XML recommendation. In other words, it essentially just controls the DTD validation. (except the legacy two properties defined in JAXP 1.2.)

To use modern schema languages such as W3C XML Schema or RELAX NG instead of DTD, you can configure your parser to be a non-validating parser by leaving the setValidating(boolean) method false, then use the setSchema(Schema) method to associate a schema to a parser.

Parameters
validating:boolean

true if the parser produced by this code will validate documents as they are parsed; false otherwise.

setXIncludeAwareback to summary
public void setXIncludeAware(final boolean state)

Set state of XInclude processing.

If XInclude markup is found in the document instance, should it be processed as specified in XML Inclusions (XInclude) Version 1.0.

XInclude processing defaults to false.

Parameters
state:boolean

Set XInclude processing to true or false

Exceptions
UnsupportedOperationException:
When implementation does not override this method
Since
1.5