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public interface Transform
A representation of the XML Transform element as
defined in the
W3C Recommendation for XML-Signature Syntax and Processing.
The XML Schema Definition is defined as:
<element name="Transform" type="ds:TransformType"/>
<complexType name="TransformType" mixed="true">
<choice minOccurs="0" maxOccurs="unbounded">
<any namespace="##other" processContents="lax"/>
<!-- (1,1) elements from (0,unbounded) namespaces -->
<element name="XPath" type="string"/>
</choice>
<attribute name="Algorithm" type="anyURI" use="required"/>
</complexType>
A Transform instance may be created by invoking the
newTransform method
of the XMLSignatureFactory class.
XMLSignatureFactory.newTransform(String, TransformParameterSpec)| Field Summary | |
|---|---|
static java.lang.String |
BASE64
The Base64 transform algorithm URI. |
static java.lang.String |
ENVELOPED
The Enveloped Signature transform algorithm URI. |
static java.lang.String |
XPATH
The XPath transform algorithm URI. |
static java.lang.String |
XPATH2
The XPath Filter 2 transform algorithm URI. |
static java.lang.String |
XSLT
The XSLT transform algorithm URI. |
| Method Summary | |
|---|---|
java.security.spec.AlgorithmParameterSpec |
getParameterSpec()
Returns the algorithm-specific input parameters associated with this Transform. |
Data |
transform(Data data,
XMLCryptoContext context)
Transforms the specified data using the underlying transform algorithm. |
Data |
transform(Data data,
XMLCryptoContext context,
java.io.OutputStream os)
Transforms the specified data using the underlying transform algorithm. |
| Methods inherited from interface javax.xml.crypto.XMLStructure |
|---|
isFeatureSupported |
| Methods inherited from interface javax.xml.crypto.AlgorithmMethod |
|---|
getAlgorithm |
| Field Detail |
|---|
static final java.lang.String BASE64
static final java.lang.String ENVELOPED
static final java.lang.String XPATH
static final java.lang.String XPATH2
static final java.lang.String XSLT
| Method Detail |
|---|
java.security.spec.AlgorithmParameterSpec getParameterSpec()
Transform.
The returned parameters can be typecast to a
TransformParameterSpec object.
getParameterSpec in interface AlgorithmMethodnull
if not specified)
Data transform(Data data,
XMLCryptoContext context)
throws TransformException
data - the data to be transformedcontext - the XMLCryptoContext containing
additional context (may be null if not applicable)
java.lang.NullPointerException - if data is null
TransformException - if an error occurs while executing the
transform
Data transform(Data data,
XMLCryptoContext context,
java.io.OutputStream os)
throws TransformException
OctetStreamData, then
this method returns null and the bytes are written to the
specified OutputStream. Otherwise, the
OutputStream is ignored and the method behaves as if
transform(Data, XMLCryptoContext) were invoked.
data - the data to be transformedcontext - the XMLCryptoContext containing
additional context (may be null if not applicable)os - the OutputStream that should be used to write
the transformed data to
null if the data was
written to the OutputStream parameter)
java.lang.NullPointerException - if data or os
is null
TransformException - if an error occurs while executing the
transform
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