Module java.xml.crypto

Package javax.xml.crypto.dom

Class DOMCryptoContext

java.lang.Object

javax.xml.crypto.dom.DOMCryptoContext

All Implemented Interfaces:

XMLCryptoContext

Direct Known Subclasses:

DOMSignContext, DOMValidateContext

public class DOMCryptoContext
extends Object
implements XMLCryptoContext

This class provides a DOM-specific implementation of the XMLCryptoContext interface. It also includes additional methods that are specific to a DOM-based implementation for registering and retrieving elements that contain attributes of type ID.

Since:

1.6

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DOMCryptoContext()	Default constructor.

Method Summary

Modifier and Type	Method	Description
Object	get(Object key)	This implementation uses an internal HashMap to get the object that the specified key maps to.
String	getBaseURI()	Returns the base URI.
String	getDefaultNamespacePrefix()	Returns the default namespace prefix.
Element	getElementById(String idValue)	Returns the Element with the specified ID attribute value.
KeySelector	getKeySelector()	Returns the key selector for finding a key.
String	getNamespacePrefix(String namespaceURI, String defaultPrefix)	This implementation uses an internal HashMap to get the prefix that the specified URI maps to.
Object	getProperty(String name)	This implementation uses an internal HashMap to get the object that the specified name maps to.
URIDereferencer	getURIDereferencer()	Returns a URIDereferencer that is used to dereference URIReferences.
Iterator<Map.Entry<String,Element>>	iterator()	Returns a read-only iterator over the set of Id/Element mappings of this DOMCryptoContext.
Object	put(Object key, Object value)	This implementation uses an internal HashMap to map the key to the specified object.
String	putNamespacePrefix(String namespaceURI, String prefix)	This implementation uses an internal HashMap to map the URI to the specified prefix.
void	setBaseURI(String baseURI)	Sets the base URI.
void	setDefaultNamespacePrefix(String defaultPrefix)	Sets the default namespace prefix.
void	setIdAttributeNS(Element element, String namespaceURI, String localName)	Registers the element's attribute specified by the namespace URI and local name to be of type ID.
void	setKeySelector(KeySelector ks)	Sets the key selector for finding a key.
Object	setProperty(String name, Object value)	This implementation uses an internal HashMap to map the name to the specified object.
void	setURIDereferencer(URIDereferencer dereferencer)	Sets a URIDereferencer that is used to dereference URIReferences.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DOMCryptoContext

protected DOMCryptoContext()

Default constructor. (For invocation by subclass constructors).

Method Details

getNamespacePrefix

public String getNamespacePrefix(String namespaceURI,
 String defaultPrefix)

This implementation uses an internal HashMap to get the prefix that the specified URI maps to. It returns the defaultPrefix if it maps to null.

Specified by:

getNamespacePrefix in interface XMLCryptoContext

Parameters:

namespaceURI - a namespace URI

defaultPrefix - the prefix to be returned in the event that the the specified namespace URI has not been bound to a prefix.

Returns:

the prefix that is associated with the specified namespace URI, or defaultPrefix if the URI is not registered. If the namespace URI is registered but has no prefix, an empty string ("") is returned.

Throws:

NullPointerException - if namespaceURI is null

See Also:

• XMLCryptoContext.putNamespacePrefix(String, String)

putNamespacePrefix

public String putNamespacePrefix(String namespaceURI,
 String prefix)

This implementation uses an internal HashMap to map the URI to the specified prefix.

Specified by:

putNamespacePrefix in interface XMLCryptoContext

Parameters:

namespaceURI - a namespace URI

prefix - a namespace prefix (or null to remove any existing mapping). Specifying the empty string ("") binds no prefix to the namespace URI.

Returns:

the previous prefix associated with the specified namespace URI, or null if there was none

Throws:

NullPointerException - if namespaceURI is null

See Also:

• XMLCryptoContext.getNamespacePrefix(String, String)

getDefaultNamespacePrefix

public String getDefaultNamespacePrefix()

Description copied from interface: XMLCryptoContext

Returns the default namespace prefix. The default namespace prefix is the prefix for all namespace URIs not explicitly set by the putNamespacePrefix method.

Specified by:

getDefaultNamespacePrefix in interface XMLCryptoContext

Returns:

the default namespace prefix, or null if none has been set.

See Also:

• XMLCryptoContext.setDefaultNamespacePrefix(String)

setDefaultNamespacePrefix

public void setDefaultNamespacePrefix(String defaultPrefix)

Description copied from interface: XMLCryptoContext

Sets the default namespace prefix. This sets the namespace prefix for all namespace URIs not explicitly set by the putNamespacePrefix method.

Specified by:

setDefaultNamespacePrefix in interface XMLCryptoContext

Parameters:

defaultPrefix - the default namespace prefix, or null to remove the current setting. Specify the empty string ("") to bind no prefix.

See Also:

• XMLCryptoContext.getDefaultNamespacePrefix()

getBaseURI

public String getBaseURI()

Description copied from interface: XMLCryptoContext

Returns the base URI.

Specified by:

getBaseURI in interface XMLCryptoContext

Returns:

the base URI, or null if not specified

See Also:

• XMLCryptoContext.setBaseURI(String)

setBaseURI

public void setBaseURI(String baseURI)

Description copied from interface: XMLCryptoContext

Sets the base URI.

Specified by:

setBaseURI in interface XMLCryptoContext

Parameters:

baseURI - the base URI, or null to remove current value

Throws:

IllegalArgumentException - if baseURI is not RFC 2396 compliant

See Also:

• XMLCryptoContext.getBaseURI()

getURIDereferencer

public URIDereferencer getURIDereferencer()

Description copied from interface: XMLCryptoContext

Returns a URIDereferencer that is used to dereference URIReferences.

Specified by:

getURIDereferencer in interface XMLCryptoContext

Returns:

the URIDereferencer, or null if not specified

See Also:

• XMLCryptoContext.setURIDereferencer(URIDereferencer)

setURIDereferencer

public void setURIDereferencer(URIDereferencer dereferencer)

Description copied from interface: XMLCryptoContext

Sets a URIDereferencer that is used to dereference URIReferences. The specified URIDereferencer is used in place of an implementation's default URIDereferencer.

Specified by:

setURIDereferencer in interface XMLCryptoContext

Parameters:

dereferencer - the URIDereferencer, or null to remove any current setting

See Also:

• XMLCryptoContext.getURIDereferencer()

getProperty

public Object getProperty(String name)

This implementation uses an internal HashMap to get the object that the specified name maps to.

Specified by:

getProperty in interface XMLCryptoContext

Parameters:

name - the name of the property

Returns:

the current value of the specified property, or null if it does not have a value

Throws:

NullPointerException - if name is null

See Also:

• XMLCryptoContext.setProperty(String, Object)

setProperty

public Object setProperty(String name,
 Object value)

This implementation uses an internal HashMap to map the name to the specified object.

Specified by:

setProperty in interface XMLCryptoContext

Parameters:

name - the name of the property

value - the value of the property to be set

Returns:

the previous value of the specified property, or null if it did not have a value

Throws:

NullPointerException - if name is null

See Also:

• XMLCryptoContext.getProperty(String)

getKeySelector

public KeySelector getKeySelector()

Description copied from interface: XMLCryptoContext

Returns the key selector for finding a key.

Specified by:

getKeySelector in interface XMLCryptoContext

Returns:

the key selector, or null if not specified

See Also:

• XMLCryptoContext.setKeySelector(KeySelector)

setKeySelector

public void setKeySelector(KeySelector ks)

Description copied from interface: XMLCryptoContext

Sets the key selector for finding a key.

Specified by:

setKeySelector in interface XMLCryptoContext

Parameters:

ks - the key selector, or null to remove the current setting

See Also:

• XMLCryptoContext.getKeySelector()

getElementById

public Element getElementById(String idValue)

Returns the Element with the specified ID attribute value.

This implementation uses an internal HashMap to get the element that the specified attribute value maps to.

Parameters:

idValue - the value of the ID

Returns:

the Element with the specified ID attribute value, or null if none.

Throws:

NullPointerException - if idValue is null

See Also:

• setIdAttributeNS(org.w3c.dom.Element, java.lang.String, java.lang.String)

setIdAttributeNS

public void setIdAttributeNS(Element element,
 String namespaceURI,
 String localName)

Registers the element's attribute specified by the namespace URI and local name to be of type ID. The attribute must have a non-empty value.

This implementation uses an internal HashMap to map the attribute's value to the specified element.

Parameters:

element - the element

namespaceURI - the namespace URI of the attribute (specify null if not applicable)

localName - the local name of the attribute

Throws:

IllegalArgumentException - if localName is not an attribute of the specified element or it does not contain a specific value

NullPointerException - if element or localName is null

See Also:

• getElementById(java.lang.String)

iterator

public Iterator<Map.Entry<String,Element>> iterator()

Returns a read-only iterator over the set of Id/Element mappings of this DOMCryptoContext. Attempts to modify the set via the Iterator.remove() method throw an UnsupportedOperationException. The mappings are returned in no particular order. Each element in the iteration is represented as a Map.Entry. If the DOMCryptoContext is modified while an iteration is in progress, the results of the iteration are undefined.

Returns:

a read-only iterator over the set of mappings

get

public Object get(Object key)

This implementation uses an internal HashMap to get the object that the specified key maps to.

Specified by:

get in interface XMLCryptoContext

Parameters:

key - the key whose associated value is to be returned

Returns:

the value to which this context maps the specified key, or null if there is no mapping for the key

See Also:

• XMLCryptoContext.put(Object, Object)

put

public Object put(Object key,
 Object value)

This implementation uses an internal HashMap to map the key to the specified object.

Specified by:

put in interface XMLCryptoContext

Parameters:

key - key with which the specified value is to be associated with

value - value to be associated with the specified key

Returns:

the previous value associated with the key, or null if there was no mapping for the key

Throws:

IllegalArgumentException - if some aspect of this key or value prevents it from being stored in this context

See Also:

• XMLCryptoContext.get(Object)