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

Class PrefixWildcardQueryNode

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

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

All Implemented Interfaces:

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

public class PrefixWildcardQueryNode
extends WildcardQueryNode

A PrefixWildcardQueryNode represents wildcardquery that matches abc* or *. This does not apply to phrases, this is a special case on the original lucene parser. TODO: refactor the code to remove this special case from the parser. and probably do it on a Processor

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
PrefixWildcardQueryNode(CharSequence field, CharSequence text, int begin, int end)
PrefixWildcardQueryNode(FieldQueryNode fqn)

Method Summary

Modifier and Type	Method	Description
PrefixWildcardQueryNode	cloneTree()	Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method
String	toString()	Every implementation of this class should return pseudo xml like this:

Methods inherited from class org.apache.lucene.queryparser.flexible.standard.nodes.WildcardQueryNode

toQueryString

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

PrefixWildcardQueryNode

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

Parameters:

field - - field name

text - - value including the wildcard

begin - - position in the query string

end - - position in the query string

PrefixWildcardQueryNode

public PrefixWildcardQueryNode(FieldQueryNode fqn)

Method Details

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 WildcardQueryNode

See Also:

• QueryNode.toString()

cloneTree

public PrefixWildcardQueryNode 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 WildcardQueryNode

Returns:

the cloned tree

Throws:

CloneNotSupportedException