Package org.alfresco.solr.query

Interface StructuredFieldPosition

All Known Implementing Classes:

AbsoluteStructuredFieldPosition, AbstractStructuredFieldPosition, AnyStructuredFieldPosition, DescendantAndSelfStructuredFieldPosition, RelativeStructuredFieldPosition, SelfAxisStructuredFieldPosition

public interface StructuredFieldPosition

Elements used to test agains path and Qname

Author:

andyh

Method Summary

Modifier and Type	Method	Description
boolean	allowslinkingByParent()
boolean	allowsLinkingBySelf()
CachingTermPositions	getCachingTermPositions()
int	getPosition()	If absolute return the position.
String	getTermText()	Get the test to search for in the term query.
boolean	isAbsolute()	Is this an absolute element; that is, it knows its exact position.
boolean	isDescendant()
boolean	isRelative()	This element only knows its position relative to the previous element.
boolean	isTerminal()	If this position is last in the chain and it is terminal it will ensure it is an exact match for the length of the chain found.
boolean	linkParent()
boolean	linkSelf()	Normally paths would require onlt parent chaining.
int	matches(int start, int end, int offset)	Does this element match
boolean	matchesAll()
void	setCachingTermPositions(CachingTermPositions tps)	A reference to the caching term positions this element uses.

Method Details

matches

int matches(int start,
 int end,
 int offset)
     throws IOException

Does this element match

Parameters:

start - - the start postion of the paths terms

end - - the end position of the paths terms

offset - - the current offset in the path

Returns:

returns the next match position (usually offset + 1) or -1 if it does not match.

Throws:

IOException

isTerminal

boolean isTerminal()

If this position is last in the chain and it is terminal it will ensure it is an exact match for the length of the chain found. If false, it will effectively allow prefix mathces for the likes of descendant-and-below style queries.

Returns:

boolean

isAbsolute

boolean isAbsolute()

Is this an absolute element; that is, it knows its exact position.

Returns:

boolean

isRelative

boolean isRelative()

This element only knows its position relative to the previous element.

Returns:

boolean

getTermText

String getTermText()

Get the test to search for in the term query. This may be null if it should not have a term query

Returns:

String

getPosition

int getPosition()

If absolute return the position. If relative we could compute the position knowing the previous term unless this element is preceded by a descendat and below style element

Returns:

int

setCachingTermPositions

void setCachingTermPositions(CachingTermPositions tps)

A reference to the caching term positions this element uses. This may be null which indicates all terms match, in that case there is no action against the index

Parameters:

tps - CachingTermPositions

getCachingTermPositions

CachingTermPositions getCachingTermPositions()

linkSelf

boolean linkSelf()

Normally paths would require onlt parent chaining. for some it is parent and child chaining.

Returns:

boolean

linkParent

boolean linkParent()

allowslinkingByParent

boolean allowslinkingByParent()

allowsLinkingBySelf

boolean allowsLinkingBySelf()

isDescendant

boolean isDescendant()

matchesAll

boolean matchesAll()