org.ucl.xpath.function
Class FnConcat

java.lang.Object
  org.ucl.xpath.function.Function
      org.ucl.xpath.function.FnConcat

public class FnConcat

extends Function

Sequence concatenation function.

Usage: fn:concat($arg1 as xdt:anyAtomicType?, $arg2 as xdt:anyAtomicType?, ... ) as xs:string

This class accepts two or more xdt:anyAtomicType arguments and converts them to xs:string. It then returns the xs:string that is the concatenation of the values of its arguments after conversion. If any of the arguments is the empty sequence, the argument is treated as the zero-length string.

The concat() function is specified to allow an arbitrary number of arguments that are concatenated together.

Field Summary

Fields inherited from class org.ucl.xpath.function.Function

_arity, _fl, _name

Constructor Summary

FnConcat()
Constructor for FnConcat.

Method Summary

static ResultSequence	concat(java.util.Collection args) Concatenate the arguments.
ResultSequence	evaluate(java.util.Collection args) Evaluate the arguments.

Methods inherited from class org.ucl.xpath.function.Function

arity, convert_argument, convert_arguments, dynamic_context, name, set_function_library, signature, signature, signature, static_context

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FnConcat

public FnConcat()

Constructor for FnConcat.

Method Detail

evaluate

public ResultSequence evaluate(java.util.Collection args)
                        throws DynamicError

Evaluate the arguments.

Specified by:

evaluate in class Function

Parameters:

args - is evaluated.

Returns:

The evaluation of the concatenation of the arguments.

Throws:

DynamicError - Dynamic error.

concat

public static ResultSequence concat(java.util.Collection args)
                             throws DynamicError

Concatenate the arguments.

Parameters:

args - are concatenated.

Returns:

The result of the concatenation of the arguments.

Throws:

DynamicError - Dynamic error.