public class FieldQuery extends Query
Query.ForEachQueryNode
Constructor and Description |
---|
FieldQuery()
An empty default constructor
|
FieldQuery(Query q)
Constructs a field query from the given query.
|
FieldQuery(Query q,
String f)
Constructs a field query from the given query and
the given field.
|
Modifier and Type | Method and Description |
---|---|
Object |
clone()
Deep Clone this object
|
String |
getField()
Gets the field that the query term should appear.
|
void |
getTermsOf(Class<? extends Query> c,
List<Query> alist,
boolean req)
Returns all the query terms, in subqueries that
are instances of a given class
|
boolean |
obtainControls(Set<String> allowed,
Map<String,String> controls)
Checks to see if field name is a valid control name, as specified by
allowed, and if so adds it to the controls table and returns true to
specify that this Query object is now dead.
|
void |
obtainQueryTerms(MatchingQueryTerms terms)
Prepares the query for matching by transforming
the query objects to a set of query terms.
|
void |
obtainQueryTerms(MatchingQueryTerms terms,
boolean required)
Prepares the query for matching by transforming
the query objects to a set of query terms.
|
String |
parseTree()
Returns the parse tree for the query as a string
|
void |
setField(String f)
Sets the value of the field.
|
String |
toString()
Returns a string representation of the query.
|
apply, applyTermPipeline, getTerms, obtainAllOf, setChild
public FieldQuery()
public FieldQuery(Query q)
q
- the query that is qualified with the field operator.public String getField()
public void setField(String f)
f
- String the value of the field.public String toString()
public void obtainQueryTerms(MatchingQueryTerms terms)
obtainQueryTerms
in class Query
terms
- MatchingQueryTerms the object which holds the
query terms and their modifiers.public void obtainQueryTerms(MatchingQueryTerms terms, boolean required)
obtainQueryTerms
in class Query
terms
- MatchingQueryTerms the object which holds the
query terms and their modifiers.required
- boolean indicates whether the field query
is required or not.public boolean obtainControls(Set<String> allowed, Map<String,String> controls)
obtainControls
in class Query
allowed
- A hashset of lowercase control names that may be set by user queries.controls
- The hashtable to add the found controls topublic void getTermsOf(Class<? extends Query> c, List<Query> alist, boolean req)
getTermsOf
in class Query
c
- Class a class of queries.alist
- ArrayList the list of query terms.req
- boolean indicates whether the subqueries
are required or not.Terrier 4.0. Copyright © 2004-2014 University of Glasgow