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java.lang.Objectnet.sf.saxon.event.SequenceReceiver
net.sf.saxon.event.ProxyReceiver
net.sf.saxon.style.UseWhenFilter
public class UseWhenFilter
This is a filter inserted into the input pipeline for processing stylesheet modules, whose task is to evaluate use-when expressions and discard those parts of the stylesheet module for which the use-when attribute evaluates to false.
| Field Summary |
|---|
| Fields inherited from class net.sf.saxon.event.ProxyReceiver |
|---|
nextReceiver |
| Fields inherited from class net.sf.saxon.event.SequenceReceiver |
|---|
pipelineConfiguration, previousAtomic, systemId |
| Fields inherited from interface javax.xml.transform.Result |
|---|
PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING |
| Constructor Summary | |
|---|---|
UseWhenFilter(Receiver next)
Create a UseWhenFilter |
|
| Method Summary | |
|---|---|
void |
attribute(NodeName attName,
SimpleType typeCode,
CharSequence value,
int locationId,
int properties)
Notify an attribute. |
void |
characters(CharSequence chars,
int locationId,
int properties)
Character data |
void |
comment(CharSequence chars,
int locationId,
int properties)
Output a comment |
void |
endElement()
End of element |
boolean |
evaluateUseWhen(String expression,
int locationId)
Evaluate a use-when attribute |
void |
namespace(NamespaceBinding namespaceBinding,
int properties)
Notify a namespace. |
void |
open()
Start of document |
void |
processingInstruction(String target,
CharSequence data,
int locationId,
int properties)
Processing Instruction |
void |
setStartTagBuffer(StartTagBuffer startTag)
Set the start tag buffer |
void |
startContent()
Notify the start of the content, that is, the completion of all attributes and namespaces. |
void |
startElement(NodeName elemName,
SchemaType typeCode,
int locationId,
int properties)
Notify the start of an element. |
| Methods inherited from class net.sf.saxon.event.ProxyReceiver |
|---|
append, close, endDocument, getNamePool, getUnderlyingReceiver, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startDocument, usesTypeAnnotations |
| Methods inherited from class net.sf.saxon.event.SequenceReceiver |
|---|
append, getConfiguration, getPipelineConfiguration, getSystemId |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public UseWhenFilter(Receiver next)
next - the next receiver in the pipeline| Method Detail |
|---|
public void setStartTagBuffer(StartTagBuffer startTag)
startTag - a preceding filter on the pipeline that buffers the attributes of a start tag
public void open()
throws XPathException
open in interface Receiveropen in class ProxyReceiverXPathException - if an error occurs
public void startElement(NodeName elemName,
SchemaType typeCode,
int locationId,
int properties)
throws XPathException
startElement in interface ReceiverstartElement in class ProxyReceiverelemName - the name of the element.typeCode - integer code identifying the element's type within the name pool.properties - bit-significant properties of the element nodelocationId - an integer which can be interpreted using a LocationProvider to return
information such as line number and system ID. If no location information is available,
the value zero is supplied.
XPathException - if an error occurs
public void namespace(NamespaceBinding namespaceBinding,
int properties)
throws XPathException
namespace in interface Receivernamespace in class ProxyReceivernamespaceBinding - properties - any special properties to be passed on this call
IllegalStateException: - attempt to output a namespace when there is no open element
start tag
XPathException - if an error occurs
public void attribute(NodeName attName,
SimpleType typeCode,
CharSequence value,
int locationId,
int properties)
throws XPathException
attribute in interface Receiverattribute in class ProxyReceiverattName - The name of the attribute, as held in the name pooltypeCode - The type of the attribute, as held in the name poolproperties - Bit significant value. The following bits are defined:
value - the string value of the attributelocationId - an integer which can be interpreted using a LocationProvider to return
information such as line number and system ID. If no location information is available,
the value zero is supplied.
IllegalStateException: - attempt to output an attribute when there is no open element
start tag
XPathException - if an error occurs
public void startContent()
throws XPathException
startContent in interface ReceiverstartContent in class ProxyReceiverXPathException - if an error occurs
public void endElement()
throws XPathException
endElement in interface ReceiverendElement in class ProxyReceiverXPathException - if an error occurs
public void characters(CharSequence chars,
int locationId,
int properties)
throws XPathException
characters in interface Receivercharacters in class ProxyReceiverchars - The characterslocationId - an integer which can be interpreted using a LocationProvider
to return information such as line number and system ID. If no location information is available,
the value zero is supplied.properties - Bit significant value. The following bits are defined:
XPathException - if an error occurs
public void processingInstruction(String target,
CharSequence data,
int locationId,
int properties)
processingInstruction in interface ReceiverprocessingInstruction in class ProxyReceivertarget - The PI name. This must be a legal name (it will not be checked).data - The data portion of the processing instructionlocationId - an integer which can be interpreted using a LocationProvider to return
information such as line number and system ID. If no location information is available,
the value zero is supplied.properties - Additional information about the PI.
public void comment(CharSequence chars,
int locationId,
int properties)
throws XPathException
comment in interface Receivercomment in class ProxyReceiverchars - The content of the commentlocationId - an integer which can be interpreted using a LocationProvider to return
information such as line number and system ID. If no location information is available,
the value zero is supplied.properties - Additional information about the comment.
XPathException - if an error occurs
public boolean evaluateUseWhen(String expression,
int locationId)
throws XPathException
expression - the expression to be evaluatedlocationId - identifies the location of the expression in case error need to be reported
XPathException
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