public abstract class DocumentBuilderFactory extends Object
Modifier | Constructor | Description |
---|---|---|
protected |
Protected constructor to prevent instantiation. |
Modifier and Type | Method | Description |
---|---|---|
abstract Object |
getAttribute |
Allows the user to retrieve specific attributes on the underlying implementation. |
abstract boolean |
getFeature |
Get the state of the named feature. |
Schema |
getSchema() |
Gets the Schema object specified through the setSchema(Schema schema) method. |
boolean |
isCoalescing() |
Indicates whether or not the factory is configured to produce parsers which converts CDATA nodes to Text nodes and appends it to the adjacent (if any) Text node. |
boolean |
isExpandEntityReferences() |
Indicates whether or not the factory is configured to produce parsers which expand entity reference nodes. |
boolean |
isIgnoringComments() |
Indicates whether or not the factory is configured to produce parsers which ignores comments. |
boolean |
isIgnoringElementContentWhitespace() |
Indicates whether or not the factory is configured to produce parsers which ignore ignorable whitespace in element content. |
boolean |
isNamespaceAware() |
Indicates whether or not the factory is configured to produce parsers which are namespace aware. |
boolean |
isValidating() |
Indicates whether or not the factory is configured to produce parsers which validate the XML content during parse. |
boolean |
isXIncludeAware() |
Get state of XInclude processing. |
static DocumentBuilderFactory |
newDefaultInstance() |
Creates a new instance of the DocumentBuilderFactory builtin system-default implementation. |
static DocumentBuilderFactory |
newDefaultNSInstance() |
Creates a new NamespaceAware instance of the DocumentBuilderFactory builtin system-default implementation. |
abstract DocumentBuilder |
newDocumentBuilder() |
Creates a new instance of a DocumentBuilder using the currently configured parameters. |
static DocumentBuilderFactory |
newInstance() |
Obtains a new instance of a DocumentBuilderFactory . |
static DocumentBuilderFactory |
newInstance |
Obtain a new instance of a DocumentBuilderFactory from class name. |
static DocumentBuilderFactory |
newNSInstance() |
Creates a new NamespaceAware instance of a DocumentBuilderFactory . |
static DocumentBuilderFactory |
newNSInstance |
Creates a new NamespaceAware instance of a DocumentBuilderFactory from the class name. |
abstract void |
setAttribute |
Allows the user to set specific attributes on the underlying implementation. |
void |
setCoalescing |
Specifies that the parser produced by this code will convert CDATA nodes to Text nodes and append it to the adjacent (if any) text node. |
void |
setExpandEntityReferences |
Specifies that the parser produced by this code will expand entity reference nodes. |
abstract void |
setFeature |
Set a feature for this DocumentBuilderFactory and DocumentBuilder s created by this factory. |
void |
setIgnoringComments |
Specifies that the parser produced by this code will ignore comments. |
void |
setIgnoringElementContentWhitespace |
Specifies that the parsers created by this factory must eliminate whitespace in element content (sometimes known loosely as 'ignorable whitespace') when parsing XML documents (see XML Rec 2.10). |
void |
setNamespaceAware |
Specifies that the parser produced by this code will provide support for XML namespaces. |
void |
setSchema |
Set the Schema to be used by parsers created from this factory. |
void |
setValidating |
Specifies that the parser produced by this code will validate documents as they are parsed. |
void |
setXIncludeAware |
Set state of XInclude processing. |
protected DocumentBuilderFactory()
newInstance()
.public static DocumentBuilderFactory newDefaultNSInstance()
DocumentBuilderFactory
builtin system-default implementation. Parsers produced by the factory instance provides support for XML namespaces by default.newDefaultInstance()
, this method must set NamespaceAware to true.DocumentBuilderFactory
builtin system-default implementation.public static DocumentBuilderFactory newNSInstance()
DocumentBuilderFactory
. Parsers produced by the factory instance provides support for XML namespaces by default.newInstance()
, this method must set NamespaceAware to true.DocumentBuilderFactory
FactoryConfigurationError
- in case of service configuration error or if the implementation is not available or cannot be instantiated.public static DocumentBuilderFactory newNSInstance(String factoryClassName, ClassLoader classLoader)
DocumentBuilderFactory
from the class name. Parsers produced by the factory instance provides support for XML namespaces by default.newInstance(java.lang.String, java.lang.ClassLoader)
, this method must set NamespaceAware to true.factoryClassName
- a fully qualified factory class name that provides implementation of javax.xml.parsers.DocumentBuilderFactory
.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.DocumentBuilderFactory
FactoryConfigurationError
- if factoryClassName
is null
, or the factory class cannot be loaded, instantiated.public static DocumentBuilderFactory newDefaultInstance()
DocumentBuilderFactory
builtin system-default implementation.DocumentBuilderFactory
builtin system-default implementation.public static DocumentBuilderFactory newInstance()
DocumentBuilderFactory
. This method uses the JAXP Lookup Mechanism to determine the DocumentBuilderFactory
implementation class to load. Once an application has obtained a reference to a DocumentBuilderFactory
, it can use the factory to configure and obtain parser instances.
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 DocumentBuilder
s, try:
java -Djaxp.debug=1 YourProgram ....
DocumentBuilderFactory
FactoryConfigurationError
- in case of service configuration error or if the implementation is not available or cannot be instantiated.public static DocumentBuilderFactory newInstance(String factoryClassName, ClassLoader classLoader)
DocumentBuilderFactory
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 DocumentBuilderFactory
it can use the factory to configure and obtain parser instances.
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 ....
factoryClassName
- fully qualified factory class name that provides implementation of javax.xml.parsers.DocumentBuilderFactory
.classLoader
- ClassLoader
used to load the factory class. If null
current Thread
's context classLoader is used to load the factory class.DocumentBuilderFactory
FactoryConfigurationError
- if factoryClassName
is null
, or the factory class cannot be loaded, instantiated.public abstract DocumentBuilder newDocumentBuilder() throws ParserConfigurationException
DocumentBuilder
using the currently configured parameters.ParserConfigurationException
- if a DocumentBuilder cannot be created which satisfies the configuration requested.public void setNamespaceAware(boolean awareness)
false
awareness
- true if the parser produced will provide support for XML namespaces; false otherwise.public void setValidating(boolean validating)
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.
validating
- true if the parser produced will validate documents as they are parsed; false otherwise.public void setIgnoringElementContentWhitespace(boolean whitespace)
false
.whitespace
- true if the parser created must eliminate whitespace in the element content when parsing XML documents; false otherwise.public void setExpandEntityReferences(boolean expandEntityRef)
true
expandEntityRef
- true if the parser produced will expand entity reference nodes; false otherwise.public void setIgnoringComments(boolean ignoreComments)
false
.ignoreComments
- boolean
value to ignore comments during processingpublic void setCoalescing(boolean coalescing)
false
coalescing
- true if the parser produced will convert CDATA nodes to Text nodes and append it to the adjacent (if any) text node; false otherwise.public boolean isNamespaceAware()
public boolean isValidating()
public boolean isIgnoringElementContentWhitespace()
public boolean isExpandEntityReferences()
public boolean isIgnoringComments()
public boolean isCoalescing()
public abstract void setAttribute(String name, Object value) throws IllegalArgumentException
All implementations that implement JAXP 1.5 or newer are required to support the XMLConstants.ACCESS_EXTERNAL_DTD
and XMLConstants.ACCESS_EXTERNAL_SCHEMA
properties.
XMLConstants.ACCESS_EXTERNAL_DTD
property restricts the access to external DTDs, external Entity References to the protocols specified by the property. If access is denied during parsing due to the restriction of this property, SAXException
will be thrown by the parse methods defined by DocumentBuilder
. XMLConstants.ACCESS_EXTERNAL_SCHEMA
property restricts the access to external Schema set by the schemaLocation attribute to the protocols specified by the property. If access is denied during parsing due to the restriction of this property, SAXException
will be thrown by the parse methods defined by DocumentBuilder
. name
- The name of the attribute.value
- The value of the attribute.IllegalArgumentException
- thrown if the underlying implementation doesn't recognize the attribute.public abstract Object getAttribute(String name) throws IllegalArgumentException
name
- The name of the attribute.IllegalArgumentException
- thrown if the underlying implementation doesn't recognize the attribute.public abstract void setFeature(String name, boolean value) throws ParserConfigurationException
DocumentBuilderFactory
and DocumentBuilder
s created by this factory. Feature names are fully qualified URI
s. Implementations may define their own features. A ParserConfigurationException
is thrown if this DocumentBuilderFactory
or the DocumentBuilder
s it creates cannot support the feature. It is possible for a DocumentBuilderFactory
to expose a feature value but be unable to change its state.
All implementations are required to support the 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 ErrorHandler.fatalError(SAXParseException exception)
. See DocumentBuilder.setErrorHandler(org.xml.sax.ErrorHandler errorHandler)
. false
: the implementation will processing XML according to the XML specifications without regard to possible implementation limits. name
- Feature name.value
- Is feature state true
or false
.ParserConfigurationException
- if this DocumentBuilderFactory
or the DocumentBuilder
s it creates cannot support this feature.NullPointerException
- If the name
parameter is null.public abstract boolean getFeature(String name) throws ParserConfigurationException
Feature names are fully qualified URI
s. Implementations may define their own features. An ParserConfigurationException
is thrown if this DocumentBuilderFactory
or the DocumentBuilder
s it creates cannot support the feature. It is possible for an DocumentBuilderFactory
to expose a feature value but be unable to change its state.
name
- Feature name.ParserConfigurationException
- if this DocumentBuilderFactory
or the DocumentBuilder
s it creates cannot support this feature.public Schema getSchema()
Schema
object specified through the setSchema(Schema schema)
method.Schema
object that was last set through the setSchema(Schema)
method, or null if the method was not invoked since a DocumentBuilderFactory
is created.UnsupportedOperationException
- When implementation does not override this method.public void setSchema(Schema schema)
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 errors are found by the validator, the parser is responsible to report them to the user-specified ErrorHandler
(or if the error handler is not set, ignore them or throw them), just like any other errors found by the parser itself. In other words, if the user-specified 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 outcome of a parse (for example by adding default values that were missing in documents), and a parser is responsible to make sure that the application will receive modified DOM trees.
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 Schema
object. Such configuration will cause a ParserConfigurationException
exception when the newDocumentBuilder()
is invoked.
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.
schema
- Schema
to use or null
to remove a schema.UnsupportedOperationException
- When implementation does not override this method.public void setXIncludeAware(boolean state)
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
.
state
- Set XInclude processing to true
or false
UnsupportedOperationException
- When implementation does not override this method.public boolean isXIncludeAware()
UnsupportedOperationException
- When implementation does not override this method.
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