Java Module java.xml.crypto Package javax.xml.crypto.dom Class DOMCryptoContext（JDK11）

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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

All Methods Instance Methods Concrete Methods
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.
`Element`	`getElementById(String idValue)`	Returns the `Element` with the specified ID attribute value.
`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.
`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`	`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.
`Object`	`setProperty(String name, Object value)`	This implementation uses an internal `HashMap` to map the name to the specified object.

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods declared in interface javax.xml.crypto.XMLCryptoContext
getBaseURI, getDefaultNamespacePrefix, getKeySelector, getURIDereferencer, setDefaultNamespacePrefix, setKeySelector, setURIDereferencer

- Constructor Detail
  - DOMCryptoContext
```
protected DOMCryptoContext()
```
    Default constructor. (For invocation by subclass constructors).
- Method Detail
  - 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)
  - 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()
  - 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)
  - 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)

Java Module java.xml.crypto Package javax.xml.crypto.dom Class DOMCryptoContext（JDK11）

Class DOMCryptoContext

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Methods declared in interface javax.xml.crypto.XMLCryptoContext

Constructor Detail

DOMCryptoContext

Method Detail

getNamespacePrefix

putNamespacePrefix

setBaseURI

getProperty

setProperty

getElementById

setIdAttributeNS

iterator

get

put