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java.lang.Object net.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 |
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Fields inherited from class net.sf.saxon.event.ProxyReceiver |
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nextReceiver |
Fields inherited from class net.sf.saxon.event.SequenceReceiver |
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pipelineConfiguration, previousAtomic, systemId |
Fields inherited from interface javax.xml.transform.Result |
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PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING |
Constructor Summary | |
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UseWhenFilter(Receiver next)
Create a UseWhenFilter |
Method Summary | |
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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 |
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append, close, endDocument, getNamePool, getUnderlyingReceiver, setPipelineConfiguration, setSystemId, setUnderlyingReceiver, setUnparsedEntity, startDocument, usesTypeAnnotations |
Methods inherited from class net.sf.saxon.event.SequenceReceiver |
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append, getConfiguration, getPipelineConfiguration, getSystemId |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public UseWhenFilter(Receiver next)
next
- the next receiver in the pipelineMethod Detail |
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public void setStartTagBuffer(StartTagBuffer startTag)
startTag
- a preceding filter on the pipeline that buffers the attributes of a start tagpublic void open() throws XPathException
open
in interface Receiver
open
in class ProxyReceiver
XPathException
- if an error occurspublic void startElement(NodeName elemName, SchemaType typeCode, int locationId, int properties) throws XPathException
startElement
in interface Receiver
startElement
in class ProxyReceiver
elemName
- 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 occurspublic void namespace(NamespaceBinding namespaceBinding, int properties) throws XPathException
namespace
in interface Receiver
namespace
in class ProxyReceiver
namespaceBinding
- 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 occurspublic void attribute(NodeName attName, SimpleType typeCode, CharSequence value, int locationId, int properties) throws XPathException
attribute
in interface Receiver
attribute
in class ProxyReceiver
attName
- 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 occurspublic void startContent() throws XPathException
startContent
in interface Receiver
startContent
in class ProxyReceiver
XPathException
- if an error occurspublic void endElement() throws XPathException
endElement
in interface Receiver
endElement
in class ProxyReceiver
XPathException
- if an error occurspublic void characters(CharSequence chars, int locationId, int properties) throws XPathException
characters
in interface Receiver
characters
in class ProxyReceiver
chars
- 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 occurspublic void processingInstruction(String target, CharSequence data, int locationId, int properties)
processingInstruction
in interface Receiver
processingInstruction
in class ProxyReceiver
target
- 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 Receiver
comment
in class ProxyReceiver
chars
- 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 occurspublic 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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