org.treetank.service.xml.xpath

Class SequenceType

java.lang.Object

org.treetank.service.xml.xpath.SequenceType

public class SequenceType
extends Object

SequenceType

A sequence type defines a type a the items in a sequnce can have. It consists of either an empty-sequence-test, or an ItemType(kind test, item() or atomic value) and an optional wildcard (*, ?, +)

Constructor Summary

Constructors

Constructor and Description
SequenceType() Constructor with no arguments means, the sequence type is the empty sequence.
SequenceType(AbsFilter mFilter) Constructor.
SequenceType(AbsFilter filter, char mWildcard) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
AbsFilter	getFilter()
char	getWildcard() Returns the wildcard's char representation.
boolean	hasWildcard()
boolean	isEmptySequence()

Methods inherited from class java.lang.Object

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

Constructor Detail

SequenceType

public SequenceType()

Constructor with no arguments means, the sequence type is the empty sequence.

SequenceType

public SequenceType(AbsFilter mFilter)

Constructor. Sequence type is an ItemType.

Parameters:

mFilter - item type filter

SequenceType

public SequenceType(AbsFilter filter,
            char mWildcard)

Constructor. Sequence type is an ItemType with an wildcard.

'ItemType ?' means the sequence has zero or one items that are of the ItemType 'ItemType +' means the sequence one or more items that are of the ItemType 'ItemType *' means the sequence has zero or more items that are of the ItemType

Parameters:

filter - item type filter

mWildcard - either '*', '?' or '+'

Method Detail

isEmptySequence

public boolean isEmptySequence()

Returns:

true, if sequence is the empty sequence

getFilter

public AbsFilter getFilter()

Returns:

the ItemType test

hasWildcard

public boolean hasWildcard()

Returns:

true, if a wildcard is present

getWildcard

public char getWildcard()

Returns the wildcard's char representation.

Returns:

wildcard sign