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java.lang.Object net.sf.saxon.expr.Expression net.sf.saxon.expr.instruct.Instruction net.sf.saxon.expr.instruct.SimpleNodeConstructor net.sf.saxon.expr.instruct.ProcessingInstruction
public class ProcessingInstruction
An xsl:processing-instruction element in the stylesheet, or a processing-instruction constructor in a query
Field Summary |
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Fields inherited from class net.sf.saxon.expr.instruct.SimpleNodeConstructor |
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select |
Fields inherited from class net.sf.saxon.expr.Expression |
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EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, WATCH_METHOD |
Constructor Summary | |
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ProcessingInstruction(Expression name)
Create an xsl:processing-instruction instruction |
Method Summary | |
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protected String |
checkContent(String data,
XPathContext context)
Check the content of the node, and adjust it if necessary |
static String |
checkContentXQuery(String data)
Check the content of the node, and adjust it if necessary, using the XQuery rules |
static String |
checkContentXSLT(String data)
Check the content of the node, and adjust it if necessary, using the XSLT rules |
Expression |
copy()
Copy an expression. |
NodeName |
evaluateNodeName(XPathContext context)
Run-time method to compute the name of the node being constructed. |
void |
explain(ExpressionPresenter out)
Diagnostic print of expression structure. |
int |
getCardinality()
Determine the static cardinality of the expression. |
int |
getDependencies()
Determine which aspects of the context the expression depends on. |
int |
getInstructionNameCode()
Get the name of this instruction for diagnostic and tracing purposes |
ItemType |
getItemType(TypeHierarchy th)
Get the item type of the items returned by evaluating this instruction |
Expression |
getNameExpression()
Get the expression that defines the processing instruction name |
Iterator<Expression> |
iterateSubExpressions()
Get the immediate sub-expressions of this expression. |
void |
localTypeCheck(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Method to perform type-checking specific to the kind of instruction |
void |
processValue(CharSequence value,
XPathContext context)
Process the value of the node, to create the new node. |
protected void |
promoteInst(PromotionOffer offer)
Offer promotion for subexpressions. |
boolean |
replaceSubExpression(Expression original,
Expression replacement)
Replace one subexpression by a replacement subexpression |
Expression |
simplify(ExpressionVisitor visitor)
Simplify an expression. |
Methods inherited from class net.sf.saxon.expr.instruct.SimpleNodeConstructor |
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computeCardinality, computeSpecialProperties, createsNewNodes, evaluateItem, getContentExpression, iterate, optimize, processLeavingTail, setSelect, typeCheck |
Methods inherited from class net.sf.saxon.expr.instruct.Instruction |
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assembleParams, assembleTunnelParams, dynamicError, evaluateAsString, getConstructType, getExpressionName, getImplementationMethod, getInstructionName, getIteratorFromProcessMethod, getSourceLocator, isXSLT, process, promote |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface javax.xml.transform.SourceLocator |
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getColumnNumber, getLineNumber, getPublicId, getSystemId |
Constructor Detail |
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public ProcessingInstruction(Expression name)
name
- the expression used to compute the name of the generated
processing-instructionMethod Detail |
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public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public Expression getNameExpression()
public ItemType getItemType(TypeHierarchy th)
Instruction
getItemType
in class Instruction
th
- the type hierarchy cache
public int getCardinality()
Expression
getCardinality
in class Expression
public Expression simplify(ExpressionVisitor visitor) throws XPathException
Instruction
simplify
in class SimpleNodeConstructor
visitor
- an expression visitor
XPathException
- if an error is discovered during expression
rewritingpublic Expression copy()
copy
in class Expression
public void localTypeCheck(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
SimpleNodeConstructor
localTypeCheck
in class SimpleNodeConstructor
visitor
- an expression visitorcontextItemType
- the static type of the context item
XPathException
- if a type error is detectedpublic int getDependencies()
Expression
getDependencies
in class Expression
public Iterator<Expression> iterateSubExpressions()
Expression
iterateSubExpressions
in class SimpleNodeConstructor
public boolean replaceSubExpression(Expression original, Expression replacement)
replaceSubExpression
in class SimpleNodeConstructor
original
- the original subexpressionreplacement
- the replacement subexpression
protected void promoteInst(PromotionOffer offer) throws XPathException
promoteInst
in class SimpleNodeConstructor
offer
- details of the offer, for example the offer to move
expressions that don't depend on the context to an outer level in
the containing expression
XPathException
- if any error is detectedpublic void processValue(CharSequence value, XPathContext context) throws XPathException
processValue
in class SimpleNodeConstructor
value
- the string value of the new nodecontext
- the dynamic evaluation context
XPathException
protected String checkContent(String data, XPathContext context) throws XPathException
checkContent
in class SimpleNodeConstructor
data
- the supplied contentcontext
- the dynamic context
XPathException
- if the content is invalidpublic static String checkContentXSLT(String data)
data
- the supplied content
public static String checkContentXQuery(String data) throws XPathException
data
- the supplied content
XPathException
- if the content is invalidpublic NodeName evaluateNodeName(XPathContext context) throws XPathException
SimpleNodeConstructor
evaluateNodeName
in class SimpleNodeConstructor
context
- the XPath dynamic evaluation context
XPathException
- if any failure occurspublic void explain(ExpressionPresenter out)
explain
in class Expression
out
- the expression presenter used to display the structure
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