org.apache.lucene.queryParser.core.nodes
Class GroupQueryNode
java.lang.Object
org.apache.lucene.queryParser.core.nodes.QueryNodeImpl
org.apache.lucene.queryParser.core.nodes.GroupQueryNode
- All Implemented Interfaces:
- Serializable, Cloneable, QueryNode
public class GroupQueryNode
- extends QueryNodeImpl
A GroupQueryNode
represents a location where the original user typed
real parenthesis on the query string. This class is useful for queries like:
a) a AND b OR c b) ( a AND b) OR c
Parenthesis might be used to define the boolean operation precedence.
- See Also:
- Serialized Form
Constructor Summary |
GroupQueryNode(QueryNode query)
This QueryNode is used to identify parenthesis on the original query string |
Methods inherited from class org.apache.lucene.queryParser.core.nodes.QueryNodeImpl |
add, add, allocate, clone, containsTag, containsTag, getChildren, getParent, getTag, getTag, getTagMap, getTags, isDefaultField, isLeaf, isRoot, set, setLeaf, setTag, setTag, unsetTag, unsetTag |
GroupQueryNode
public GroupQueryNode(QueryNode query)
- This QueryNode is used to identify parenthesis on the original query string
getChild
public QueryNode getChild()
toString
public String toString()
- Description copied from class:
QueryNodeImpl
- Every implementation of this class should return pseudo xml like this:
For FieldQueryNode:
- Specified by:
toString
in interface QueryNode
- Overrides:
toString
in class QueryNodeImpl
- See Also:
QueryNode.toString()
toQueryString
public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser)
- Description copied from interface:
QueryNode
- convert to a query string understood by the query parser
cloneTree
public QueryNode 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 QueryNodeImpl
- Returns:
- the cloned tree
- Throws:
CloneNotSupportedException
setChild
public void setChild(QueryNode child)
- Parameters:
child
-
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