Package org.apache.lucene.queryparser.flexible.standard.nodes

Class WildcardQueryNode

java.lang.Object

org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl

org.apache.lucene.queryparser.flexible.core.nodes.FieldQueryNode

org.apache.lucene.queryparser.flexible.standard.nodes.WildcardQueryNode

All Implemented Interfaces:

Cloneable, FieldableNode, FieldValuePairQueryNode<CharSequence>, QueryNode, TextableQueryNode, ValueQueryNode<CharSequence>

Direct Known Subclasses:

PrefixWildcardQueryNode

public class WildcardQueryNode
extends FieldQueryNode

A WildcardQueryNode represents wildcard query This does not apply to phrases. Examples: a*b*c Fl?w? m?ke*g.

Field Summary

Fields inherited from class org.apache.lucene.queryparser.flexible.core.nodes.FieldQueryNode

begin, end, field, positionIncrement, text

Fields inherited from class org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl

PLAINTEXT_FIELD_NAME, toQueryStringIgnoreFields

Constructor Summary

Constructors

Constructor	Description
WildcardQueryNode(CharSequence field, CharSequence text, int begin, int end)
WildcardQueryNode(FieldQueryNode fqn)

Method Summary

Modifier and Type	Method	Description
WildcardQueryNode	cloneTree()	Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method
CharSequence	toQueryString(EscapeQuerySyntax escaper)	convert to a query string understood by the query parser
String	toString()	Every implementation of this class should return pseudo xml like this:

Methods inherited from class org.apache.lucene.queryparser.flexible.core.nodes.FieldQueryNode

getBegin, getEnd, getField, getFieldAsString, getPositionIncrement, getTermEscaped, getTermEscapeQuoted, getText, getTextAsString, getValue, setBegin, setEnd, setField, setPositionIncrement, setText, setValue

Methods inherited from class org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl

add, add, allocate, clone, containsTag, getChildren, getParent, getTag, getTagMap, isDefaultField, isLeaf, isRoot, removeChildren, removeFromParent, set, setLeaf, setTag, unsetTag

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.queryparser.flexible.core.nodes.QueryNode

add, add, containsTag, getChildren, getParent, getTag, getTagMap, isLeaf, removeChildren, removeFromParent, set, setTag, unsetTag

Constructor Details

WildcardQueryNode

public WildcardQueryNode(CharSequence field,
 CharSequence text,
 int begin,
 int end)

Parameters:

field - - field name

text - - value that contains one or more wild card characters (? or *)

begin - - position in the query string

end - - position in the query string

WildcardQueryNode

public WildcardQueryNode(FieldQueryNode fqn)

Method Details

toQueryString

public CharSequence toQueryString(EscapeQuerySyntax escaper)

Description copied from interface: QueryNode

convert to a query string understood by the query parser

Specified by:

toQueryString in interface QueryNode

Overrides:

toQueryString in class FieldQueryNode

toString

public String toString()

Description copied from class: QueryNodeImpl

Every implementation of this class should return pseudo xml like this:

For FieldQueryNode: <field start='1' end='2' field='subject' text='foo'/>

Specified by:

toString in interface QueryNode

Overrides:

toString in class FieldQueryNode

See Also:

• QueryNode.toString()

cloneTree

public WildcardQueryNode cloneTree()
                            throws CloneNotSupportedException

Description copied from interface: QueryNode

Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method

Specified by:

cloneTree in interface QueryNode

Overrides:

cloneTree in class FieldQueryNode

Returns:

the cloned tree

Throws:

CloneNotSupportedException