Package org.apache.xpath.functions
Class Function3Args
- java.lang.Object
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- org.apache.xpath.Expression
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- org.apache.xpath.functions.Function
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- org.apache.xpath.functions.FunctionOneArg
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- org.apache.xpath.functions.Function2Args
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- org.apache.xpath.functions.Function3Args
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- All Implemented Interfaces:
java.io.Serializable
,javax.xml.transform.SourceLocator
,ExpressionNode
,ExpressionOwner
,XPathVisitable
- Direct Known Subclasses:
FuncFormatNumb
,FuncSubstring
,FunctionMultiArgs
,FuncTranslate
public class Function3Args extends Function2Args
Base class for functions that accept three arguments.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description Function3Args()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
callArgVisitors(XPathVisitor visitor)
Call the visitors for the function arguments.boolean
canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside the current subtree.void
checkNumberArgs(int argNum)
Check that the number of arguments passed to this function is correct.boolean
deepEquals(Expression expr)
Compare this object with another object and see if they are equal, include the sub heararchy.void
fixupVariables(java.util.Vector vars, int globalsSize)
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.Expression
getArg2()
Return the third argument passed to the function (at index 2).void
setArg(Expression arg, int argNum)
Set an argument expression for a function.-
Methods inherited from class org.apache.xpath.functions.Function2Args
getArg1
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Methods inherited from class org.apache.xpath.functions.FunctionOneArg
getArg0, getExpression, setExpression
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Methods inherited from class org.apache.xpath.functions.Function
callVisitors, execute, postCompileStep
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Methods inherited from class org.apache.xpath.Expression
asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr
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Method Detail
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getArg2
public Expression getArg2()
Return the third argument passed to the function (at index 2).- Returns:
- An expression that represents the third argument passed to the function.
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fixupVariables
public void fixupVariables(java.util.Vector vars, int globalsSize)
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.- Overrides:
fixupVariables
in classFunction2Args
- Parameters:
vars
- List of QNames that correspond to variables. This list should be searched backwards for the first qualified name that corresponds to the variable reference qname. The position of the QName in the vector from the start of the vector will be its position in the stack frame (but variables above the globalsTop value will need to be offset to the current stack frame).
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setArg
public void setArg(Expression arg, int argNum) throws WrongNumberArgsException
Set an argument expression for a function. This method is called by the XPath compiler.- Overrides:
setArg
in classFunction2Args
- Parameters:
arg
- non-null expression that represents the argument.argNum
- The argument number index.- Throws:
WrongNumberArgsException
- If the argNum parameter is greater than 2.
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checkNumberArgs
public void checkNumberArgs(int argNum) throws WrongNumberArgsException
Check that the number of arguments passed to this function is correct.- Overrides:
checkNumberArgs
in classFunction2Args
- Parameters:
argNum
- The number of arguments that is being passed to the function.- Throws:
WrongNumberArgsException
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canTraverseOutsideSubtree
public boolean canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside the current subtree.- Overrides:
canTraverseOutsideSubtree
in classFunction2Args
- Returns:
- true if traversal outside the context node's subtree can occur.
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callArgVisitors
public void callArgVisitors(XPathVisitor visitor)
Description copied from class:Function
Call the visitors for the function arguments.- Overrides:
callArgVisitors
in classFunction2Args
- See Also:
XPathVisitable.callVisitors(ExpressionOwner, XPathVisitor)
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deepEquals
public boolean deepEquals(Expression expr)
Description copied from class:Expression
Compare this object with another object and see if they are equal, include the sub heararchy.- Overrides:
deepEquals
in classFunction2Args
- Parameters:
expr
- Another expression object.- Returns:
- true if this objects class and the expr object's class are the same, and the data contained within both objects are considered equal.
- See Also:
Expression.deepEquals(Expression)
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