FunctionDef1Arg (Xalan-Java 2.7.2)

java.lang.Object
- org.apache.xpath.Expression
- - org.apache.xpath.functions.Function
  - - org.apache.xpath.functions.FunctionOneArg
    - - org.apache.xpath.functions.FunctionDef1Arg

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.SourceLocator, ExpressionNode, ExpressionOwner, XPathVisitable

Direct Known Subclasses:

FuncDoclocation, FuncGenerateId, FuncLocalPart, FuncNamespace, FuncNormalizeSpace, FuncNumber, FuncQname, FuncString, FuncStringLength
```
public class FunctionDef1Arg
extends FunctionOneArg
```
Base class for functions that accept one argument that can be defaulted if not specified.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

FunctionDef1Arg()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`Arg0IsNodesetExpr()`	Tell if the expression is a nodeset expression.
`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.

Methods inherited from class org.apache.xpath.functions.FunctionOneArg
callArgVisitors, deepEquals, fixupVariables, getArg0, getExpression, setArg, setExpression

Methods inherited from class org.apache.xpath.functions.Function
callVisitors, execute, postCompileStep

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

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FunctionDef1Arg
```
public FunctionDef1Arg()
```
- Method Detail
  - Arg0IsNodesetExpr
```
public boolean Arg0IsNodesetExpr()
```
    Tell if the expression is a nodeset expression.
    
    Returns:
    
    true if the expression can be represented as a nodeset.
  - checkNumberArgs
```
public void checkNumberArgs(int argNum)
                     throws WrongNumberArgsException
```
    Check that the number of arguments passed to this function is correct.
    
    Overrides:
    
    checkNumberArgs in class FunctionOneArg
    
    Parameters:
    
    argNum - The number of arguments that is being passed to the function.
    
    Throws:
    
    WrongNumberArgsException - if the number of arguments is not 0 or 1.
  - canTraverseOutsideSubtree
```
public boolean canTraverseOutsideSubtree()
```
    Tell if this expression or it's subexpressions can traverse outside the current subtree.
    
    Overrides:
    
    canTraverseOutsideSubtree in class FunctionOneArg
    
    Returns:
    
    true if traversal outside the context node's subtree can occur.