Uses of Class
com.yahoo.prelude.query.Item

Packages that use Item

Package	Description
com.yahoo.prelude.query	The query model representing a boolean combination of selection criterions, where elements may be simple criterions, nested boolean operators, or annotated pieces of natural language text.
com.yahoo.prelude.query.parser
com.yahoo.prelude.query.textualrepresentation
com.yahoo.prelude.querytransform
com.yahoo.prelude.semantics.engine
com.yahoo.prelude.semantics.rule
com.yahoo.search.query	The search query model
com.yahoo.search.query.textserialize
com.yahoo.search.query.textserialize.item
com.yahoo.search.query.textserialize.serializer
com.yahoo.search.querytransform	Vespa search platform query transformation infrastructure.

Uses of Item in com.yahoo.prelude.query

Subclasses of Item in com.yahoo.prelude.query

Modifier and Type	Class	Description
class	AndItem	An and'ing of a collection of sub-expressions
class	AndSegmentItem	An immutable and'ing of a collection of sub-expressions.
class	BoolItem	A true/false term suitable for searching bool indexes.
class	CompositeIndexedItem	Common implementation for Item classes implementing the IndexedItem interface.
class	CompositeItem	Superclass of expressions which contains a collection of sub-expressions
class	CompositeTaggableItem	Common implementation for Item classes implementing the TaggableItem interface.
class	DotProductItem	A weighted set query item to be evaluated as a sparse dot product.
class	EquivItem	An Item where each child is an alternative which can be matched.
class	ExactStringItem	Used to signal that this term requires exact match if the backend supports it.
class	FalseItem	A query item which never matches.
class	FuzzyItem	Fuzzy search term
class	GeoLocationItem	This represents a geo-location in the query tree.
class	IndexedSegmentItem	Common implementation for Item classes implementing the IndexedItem interface.
class	IntItem	This represents either a number (integer or floating point) a partial range, given by "<number" or ">number", where the numbers are exclusive, or a full or open range "[number;number], "[number;]" or "[;number]" where the numbers are inclusive, or exclusive if a square bracket is replaced with a pointy one If a range is specified in brackets, it is also permissible to add a third number specifying the number of hits this will match on each node - [from;to;hitLimit]
class	MarkerWordItem	Special words known by the index used for marking things.
class	NearestNeighborItem	Represent a query item matching the K nearest neighbors in a multi-dimensional vector space.
class	NearItem	A set of terms which must be near each other to match.
class	NonReducibleCompositeItem	A composite item which specifies semantics which are not maintained if an instance with a single child is replaced by the single child.
class	NotItem	A composite item where the first item is positive and the following items are negative items where matches should exclude the document should from the result.
class	NullItem	A placeholder for null queries to make searchers easier to write.
class	ONearItem	Ordered NearItem.
class	OrItem	An or'ing of a collection of sub-expressions
class	PhraseItem	A term which contains a phrase - a collection of word terms
class	PhraseSegmentItem	A term which contains a fixed length phrase, a collection of word terms, resulting from a single segmentation operation.
class	PredicateQueryItem	A PredicateQueryItem is a collection of feature/value-pairs that are used to query predicate fields, which contains boolean constraints.
class	PrefixItem	A word which matches beginnings of words instead of complete words
class	PureWeightedInteger	An integer item which only consists of a value and weight.
class	PureWeightedItem	A word item which only consists of a value and weight, and gets other properties such as the index to query from ther parent item.
class	PureWeightedString	A word item which only consists of a value and weight.
class	RangeItem	This class represents a numeric range.
class	RankItem	Represents the rank operator, which only orders the result set and does not change which hits are returned.
class	RegExpItem	Match a field with the contained regular expression.
class	SameElementItem	This represents a query where all terms are required to match in the same element id.
class	SegmentItem	An immutable and'ing of a collection of sub-expressions.
class	SimpleIndexedItem	Common implementation for Item classes implementing the IndexedItem interface.
class	SimpleTaggableItem	Common implementation for Item classes implementing the TaggableItem interface.
class	SubstringItem	A word that matches substrings of words
class	SuffixItem	A word that matches a suffix of words instead of a complete word.
class	TaggableSegmentItem	Common implementation for Item classes implementing the TaggableItem interface.
class	TermItem	Superclass of "leaf" conditions containing a single entity which is either matched in a field or not.
class	TrueItem	A query item which matches everything.
class	UriItem	An item matching a uri field.
class	WandItem	A weighted set query item to be evaluated as a Wand with dot product scoring.
final class	WeakAndItem	Weak And of a collection of sub-expressions: this behaves like an OR unless many hits are returned and then it starts acting more like an AND.
class	WeightedSetItem	A term which contains a weighted set.
class	WordAlternativesItem	A set of words with differing exactness scores to be used for literal boost ranking.
class	WordItem	A simple word or token to match in some field.

Fields in com.yahoo.prelude.query declared as Item

Modifier and Type	Field	Description
protected Item	Item.connectedBacklink
protected Item	Item.connectedItem	Items for explicit connectivity

Methods in com.yahoo.prelude.query that return Item

Modifier and Type	Method	Description
Item	Item.clone()	Returns a deep copy of this item
Item	TermType.createItemClass()	Returns an instance of the class corresponding to the given type, AndItem if this is the DEFAULT type
Item	CompositeTaggableItem.getConnectedItem()
Item	SimpleTaggableItem.getConnectedItem()
Item	TaggableItem.getConnectedItem()
Item	TaggableSegmentItem.getConnectedItem()
Item	CompositeItem.getItem(int index)	Returns a subitem
Item	NotItem.getPositiveItem()	Returns the positive item (the first subitem), or TrueItem if no positive items has been added.
Item	CompositeItem.removeItem(int index)	Removes the item at the given index
Item	NotItem.removeItem(int index)
Item	SegmentItem.removeItem(int index)
Item	CompositeItem.setItem(int index, Item item)	Replaces the item at the given index.
Item	PhraseItem.setItem(int index, Item item)
Item	NotItem.setPositiveItem(Item item)	Sets the positive item (the first item)

Methods in com.yahoo.prelude.query that return types with arguments of type Item

Modifier and Type	Method	Description
Optional<Item>	CompositeItem.extractSingleChild()	Returns the single child of this, if this can be omitted without changes to recall semantics.
Optional<Item>	NonReducibleCompositeItem.extractSingleChild()
Optional<Item>	PhraseItem.extractSingleChild()
Optional<Item>	PhraseSegmentItem.extractSingleChild()
Optional<Item>	SameElementItem.extractSingleChild()
ListIterator<Item>	CompositeItem.getItemIterator()	Returns a modifiable list iterator of the immediate children of this
List<Item>	CompositeItem.items()	Returns a read only list of the immediate children of this
List<Item>	NotItem.negativeItems()	Returns the negative items of this: All child items except the first

Methods in com.yahoo.prelude.query with parameters of type Item

Modifier and Type	Method	Description
protected void	CompositeItem.adding(Item item)
protected void	EquivItem.adding(Item item)
protected void	SameElementItem.adding(Item item)
void	CompositeItem.addItem(int index, Item item)	Inserts the item at a position and increases the index of existing items starting on this position by one
void	CompositeItem.addItem(Item item)
void	NotItem.addItem(Item item)	Adds an item.
void	PhraseItem.addItem(int index, Item item)
void	PhraseItem.addItem(Item item)	Adds subitem.
void	PhraseSegmentItem.addItem(Item item)	Adds subitem.
void	SegmentItem.addItem(int index, Item item)
void	SegmentItem.addItem(Item item)
void	NotItem.addNegativeItem(Item negative)	Adds a negative item.
void	NotItem.addPositiveItem(Item item)	Convenience method for adding a positive item.
int	CompositeItem.getItemIndex(Item item)	Returns the index of a subitem
void	ItemHelper.getPositiveTerms(Item item, List<IndexedItem> terms)
boolean	CompositeItem.removeItem(Item item)	Removes the given item.
boolean	NotItem.removeItem(Item item)
boolean	SegmentItem.removeItem(Item item)
void	CompositeTaggableItem.setConnectivity(Item item, double connectivity)	See TaggableItem.setConnectivity(com.yahoo.prelude.query.Item, double)
void	SimpleTaggableItem.setConnectivity(Item item, double connectivity)
void	TaggableItem.setConnectivity(Item item, double connectivity)	Set the connectivity to another term in the same query tree.
void	TaggableSegmentItem.setConnectivity(Item item, double connectivity)	See TaggableItem.setConnectivity(com.yahoo.prelude.query.Item, double)
Item	CompositeItem.setItem(int index, Item item)	Replaces the item at the given index.
Item	PhraseItem.setItem(int index, Item item)
Item	NotItem.setPositiveItem(Item item)	Sets the positive item (the first item)
abstract boolean	ToolBox.QueryVisitor.visit(Item item)	Called for each item in the query tree given to ToolBox.visit(QueryVisitor, Item).
static void	ToolBox.visit(ToolBox.QueryVisitor visitor, Item item)

Constructors in com.yahoo.prelude.query with parameters of type Item

Modifier	Constructor	Description
	EquivItem(Item item)	Creates an EQUIV with the given item as child.
	EquivItem(Item item, Collection<String> words)	Creates an EQUIV with the given item and a set of alternate words as children.

Uses of Item in com.yahoo.prelude.query.parser

Methods in com.yahoo.prelude.query.parser that return Item

Modifier and Type	Method	Description
protected Item	AllParser.combineItems(Item topLevelItem, Item item)	Returns the top level item resulting from combining the given top level item and the new item.
protected Item	AnyParser.combineItems(Item topLevelItem, Item item)	Returns the top level item resulting from combining the given top level item and the new item.
protected Item	AdvancedParser.handleComposite(boolean topLevel)	Deprecated.
protected Item	AllParser.negativeItem()
protected Item	AnyParser.negativeItem()
final Item	AbstractParser.parse(String queryToParse, String filterToParse, com.yahoo.language.Language parsingLanguage, IndexFacts.Session indexFacts, String defaultIndexName)
Item	CustomParser.parse(String queryToParse, String filterToParse, com.yahoo.language.Language parsingLanguage, IndexFacts.Session indexFacts, String defaultIndexName)
default Item	CustomParser.parse(String queryToParse, String filterToParse, com.yahoo.language.Language parsingLanguage, Set<String> toSearch, IndexFacts indexFacts, String defaultIndexName)	Returns the raw result from parsing, not wrapped in a QueryTree instance.
Item	ProgrammaticParser.parse(String queryToParse, String filterToParse, com.yahoo.language.Language parsingLanguage, IndexFacts.Session indexFacts, String defaultIndexName)
protected abstract Item	AbstractParser.parseItems()
protected Item	AdvancedParser.parseItems()	Deprecated.
protected Item	AllParser.parseItems()
protected Item	AnyParser.parseItems()
protected Item	PhraseParser.parseItems()
protected Item	TokenizeParser.parseItems()
protected Item	AllParser.parseItemsBody()
protected Item	WebParser.parseItemsBody()
protected Item	AbstractParser.segment(String indexName, Token token, boolean quoted)	Segments a token
static Item	AbstractParser.simplifyPhrases(Item unwashed)	Collapses single item phrases in the tree to the contained item.
protected final Item	AllParser.simplifyUnnecessaryComposites(Item item)

Methods in com.yahoo.prelude.query.parser with parameters of type Item

Modifier and Type	Method	Description
protected CompositeItem	AllParser.addAnd(Item item, CompositeItem and)
protected NotItem	AllParser.addNot(Item item, NotItem not)
protected OrItem	AllParser.addOr(Item item, OrItem or)
protected Item	AllParser.combineItems(Item topLevelItem, Item item)	Returns the top level item resulting from combining the given top level item and the new item.
protected Item	AnyParser.combineItems(Item topLevelItem, Item item)	Returns the top level item resulting from combining the given top level item and the new item.
static Item	AbstractParser.simplifyPhrases(Item unwashed)	Collapses single item phrases in the tree to the contained item.
protected final Item	AllParser.simplifyUnnecessaryComposites(Item item)

Uses of Item in com.yahoo.prelude.query.textualrepresentation

Methods in com.yahoo.prelude.query.textualrepresentation with parameters of type Item

Modifier and Type	Method	Description
void	Discloser.addChild(Item item)

Constructors in com.yahoo.prelude.query.textualrepresentation with parameters of type Item

Modifier	Constructor	Description
	TextualQueryRepresentation(Item root)

Uses of Item in com.yahoo.prelude.querytransform

Methods in com.yahoo.prelude.querytransform that return Item

Modifier and Type	Method	Description
Item	PhraseMatcher.Phrase.MatchIterator.next()

Methods in com.yahoo.prelude.querytransform with parameters of type Item

Modifier and Type	Method	Description
List<PhraseMatcher.Phrase>	PhraseMatcher.matchPhrases(Item queryItem)	Finds all phrases (word sequences of length 1 or higher) of the same index, not negative items of a notitem, which constitutes a complete entry in the automaton of this matcher

Uses of Item in com.yahoo.prelude.semantics.engine

Methods in com.yahoo.prelude.semantics.engine that return Item

Modifier and Type	Method	Description
Item	Match.toItem(String label)	Returns a new item representing this match
Item	Match.toItem(String label, String term)	Returns a new item representing this match
Item	ReferencedMatches.toItem(String label)	Returns the item to insert from these referenced matches, or null if none

Methods in com.yahoo.prelude.semantics.engine with parameters of type Item

Modifier and Type	Method	Description
void	Evaluation.addItem(Item item, TermType termType)	Adds an item to the query being evaluated in a way consistent with the query type
void	Evaluation.removeItem(int position, Item item)	Removes an item, prefers the one at/close to the given position if there are multiple ones
void	Evaluation.removeItem(Item item)	Removes this item
void	RuleEvaluation.removeItem(int position, Item item)	Removes an item, prefers the one at/close to the given position if there are multiple ones
void	RuleEvaluation.removeItem(Item item)
void	Evaluation.removeItemByIdentity(Item item)	Removes this item by identity to ensure we remove the right one if there are multiple equal items
void	RuleEvaluation.removeItemByIdentity(Item item)

Method parameters in com.yahoo.prelude.semantics.engine with type arguments of type Item

Modifier and Type	Method	Description
void	RuleEvaluation.addItems(List<Item> items, TermType termType)	Adds an item to the query being evaluated in a way consistent with the query type
void	Evaluation.insertItems(List<Item> items, CompositeItem parent, int index, TermType desiredParentType)	Inserts an item to the query being evaluated in a way consistent with the query type
void	RuleEvaluation.insertItems(List<Item> items, CompositeItem parent, int index, TermType termType)	Inserts an item to the query being evaluated in a way consistent with the query type

Uses of Item in com.yahoo.prelude.semantics.rule

Method parameters in com.yahoo.prelude.semantics.rule with type arguments of type Item

Modifier and Type	Method	Description
protected void	TermProduction.insertMatch(RuleEvaluation e, Match matched, List<Item> newItems, int offset)	Inserts newItem at the position of this match TODO: Move to ruleevaluation

Uses of Item in com.yahoo.search.query

Subclasses of Item in com.yahoo.search.query

Modifier and Type	Class	Description
class	QueryTree	The root node of a query tree.

Methods in com.yahoo.search.query that return Item

Modifier and Type	Method	Description
Item	QueryTree.and(Item item)	Modifies this query to become the current query AND the given item.
Item	QueryTree.getRoot()	Returns the query root.
Item	QueryTree.withRank(Item item)	Modifies this query to become the current query RANK with the given item.

Methods in com.yahoo.search.query with parameters of type Item

Modifier and Type	Method	Description
void	QueryTree.addItem(int index, Item item)
void	QueryTree.addItem(Item item)
Item	QueryTree.and(Item item)	Modifies this query to become the current query AND the given item.
static List<IndexedItem>	QueryTree.getPositiveTerms(Item item)	Returns a flattened list of all positive query terms under the given item
final void	QueryTree.setRoot(Item root)
Item	QueryTree.withRank(Item item)	Modifies this query to become the current query RANK with the given item.

Constructors in com.yahoo.search.query with parameters of type Item

Modifier	Constructor	Description
	QueryTree(Item root)

Uses of Item in com.yahoo.search.query.textserialize

Methods in com.yahoo.search.query.textserialize that return Item

Modifier and Type	Method	Description
static Item	TextSerialize.parse(String serializedQuery)

Methods in com.yahoo.search.query.textserialize with parameters of type Item

Modifier and Type	Method	Description
static String	TextSerialize.serialize(Item item)

Uses of Item in com.yahoo.search.query.textserialize.item

Methods in com.yahoo.search.query.textserialize.item with parameters of type Item

Modifier and Type	Method	Description
protected String	AndNotRestConverter.getFormName(Item item)
protected String	CompositeConverter.getFormName(Item item)
static void	ItemInitializer.initialize(Item item, ItemArguments arguments, ItemContext itemContext)
static void	ItemInitializer.initializeForm(DispatchForm form, Item item, ItemIdMapper itemIdMapper)
DispatchForm	CompositeConverter.itemToForm(Item item, ItemIdMapper itemIdMapper)
DispatchForm	ItemFormConverter.itemToForm(Item item, ItemIdMapper itemIdMapper)
DispatchForm	NearConverter.itemToForm(Item item, ItemIdMapper itemIdMapper)
DispatchForm	TermConverter.itemToForm(Item item, ItemIdMapper itemIdMapper)
void	ItemContext.setItemId(String id, Item item)

Uses of Item in com.yahoo.search.query.textserialize.serializer

Methods in com.yahoo.search.query.textserialize.serializer with parameters of type Item

Modifier and Type	Method	Description
String	ItemIdMapper.getId(Item item)
String	QueryTreeSerializer.serialize(Item root)

Uses of Item in com.yahoo.search.querytransform

Methods in com.yahoo.search.querytransform that return Item

Modifier and Type	Method	Description
protected Item	NGramSearcher.splitToGrams(Item term, String text, int gramSize, Query query)	Splits the given item into n-grams and adds them as a CompositeItem containing WordItems searching the index of the input term.

Methods in com.yahoo.search.querytransform with parameters of type Item

Modifier and Type	Method	Description
protected Item	NGramSearcher.splitToGrams(Item term, String text, int gramSize, Query query)	Splits the given item into n-grams and adds them as a CompositeItem containing WordItems searching the index of the input term.