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java.lang.Object | +--net.sf.saxon.expr.ComputedExpression | +--net.sf.saxon.expr.FunctionCall | +--net.sf.saxon.functions.SystemFunction
Abstract superclass for system-defined and user-defined functions
Field Summary | |
protected int |
operation
|
Fields inherited from class net.sf.saxon.expr.FunctionCall |
argument |
Fields inherited from class net.sf.saxon.expr.ComputedExpression |
lineNumber, NO_ARGUMENTS, staticProperties |
Constructor Summary | |
SystemFunction()
|
Method Summary | |
protected void |
addContextDocumentArgument(int pos,
java.lang.String augmentedName)
Add an implicit argument referring to the context document. |
void |
checkArguments(StaticContext env)
Method called during static type checking |
int |
computeCardinality()
Determine the cardinality of the function. |
void |
display(int level,
NamePool pool)
Diagnostic print of expression structure |
protected StandardFunction.Entry |
getDetails()
Get the details |
ItemType |
getItemType()
Determine the item type of the value returned by the function |
java.lang.String |
getName()
Get the name of the function. |
protected SequenceType |
getRequiredType(int arg)
Get the required type of the nth argument |
static void |
main(java.lang.String[] args)
The main() method of this class is not intended to be called, it merely tells the code inspection tools in IDEA that the constructors of each function class are actual entry points |
static FunctionCall |
makeSystemFunction(java.lang.String name)
Make a system function (one in the standard function namespace). |
protected void |
useContextItemAsDefault()
Set "." as the default value for the first and only argument. |
Methods inherited from class net.sf.saxon.expr.FunctionCall |
analyze, checkArgumentCount, getNumberOfArguments, getSubExpressions, preEvaluate, promote, setArguments, simplify, simplifyArguments |
Methods inherited from class net.sf.saxon.expr.ComputedExpression |
computeDependencies, computeSpecialProperties, computeStaticProperties, dynamicError, effectiveBooleanValue, evaluateAsString, evaluateItem, getCardinality, getDependencies, getIntrinsicDependencies, getLineNumber, getSourceLocator, getSpecialProperties, iterate, markTailFunctionCalls, setLineNumber, typeError |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected int operation
Constructor Detail |
public SystemFunction()
Method Detail |
public static FunctionCall makeSystemFunction(java.lang.String name)
name
- The local name of the function
protected StandardFunction.Entry getDetails()
public void checkArguments(StaticContext env) throws XPathException
checkArguments
in class FunctionCall
XPathException
protected SequenceType getRequiredType(int arg)
public java.lang.String getName()
getName
in class FunctionCall
public ItemType getItemType()
public int computeCardinality()
computeCardinality
in class ComputedExpression
protected final void useContextItemAsDefault()
protected final void addContextDocumentArgument(int pos, java.lang.String augmentedName) throws XPathException.Static
XPathException.Static
public void display(int level, NamePool pool)
display
in interface Expression
display
in class FunctionCall
level
- indentation level for this expressionpublic static void main(java.lang.String[] args) throws java.lang.Exception
java.lang.Exception
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