Package org.jaxen.function
Class StartsWithFunction
- java.lang.Object
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- org.jaxen.function.StartsWithFunction
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- All Implemented Interfaces:
Function
public class StartsWithFunction extends java.lang.Object implements Function
4.2
boolean starts-with(string,string)
The starts-with function returns true if the first argument string starts with the second argument string, and otherwise returns false.
- See Also:
- Section 4.2 of the XPath Specification
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Constructor Summary
Constructors Constructor Description StartsWithFunction()
Create a newStartsWithFunction
object.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
call(Context context, java.util.List args)
Returns true if the string-value of the first item inargs
starts with the string-value of the second item inargs
.static java.lang.Boolean
evaluate(java.lang.Object strArg, java.lang.Object matchArg, Navigator nav)
Returns true if the string-value ofstrArg
starts with the string-value ofmatchArg
.
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Method Detail
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call
public java.lang.Object call(Context context, java.util.List args) throws FunctionCallException
Returns true if the string-value of the first item inargs
starts with the string-value of the second item inargs
. Otherwise it returns false.- Specified by:
call
in interfaceFunction
- Parameters:
context
- the context at the point in the expression when the function is calledargs
- a list that contains two items- Returns:
Boolean.TRUE
if the first item inargs
starts with the string-value of the second item inargs
; otherwiseBoolean.FALSE
- Throws:
FunctionCallException
- ifargs
does not have length two
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evaluate
public static java.lang.Boolean evaluate(java.lang.Object strArg, java.lang.Object matchArg, Navigator nav)
Returns true if the string-value ofstrArg
starts with the string-value ofmatchArg
. Otherwise it returns false.- Parameters:
strArg
- the object whose string-value searched for the prefixmatchArg
- the object whose string-value becomes the prefix string to compare againstnav
- the navigator used to calculate the string-values of the arguments- Returns:
Boolean.TRUE
if the string-value ofstrArg
starts with the string-value ofmatchArg
; otherwiseBoolean.FALSE
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