public class BooleanQuery2ModifierNodeProcessor extends java.lang.Object implements QueryNodeProcessor
This processor is used to apply the correct ModifierQueryNode
to
BooleanQueryNode
s children. This is a variant of
BooleanModifiersQueryNodeProcessor
which ignores precedence.
The StandardSyntaxParser
knows the rules of precedence, but lucene
does not. e.g. (A AND B OR C AND D)
ist treated like
(+A +B +C +D)
.
This processor walks through the query node tree looking for
BooleanQueryNode
s. If an AndQueryNode
is found, every child,
which is not a ModifierQueryNode
or the ModifierQueryNode
is
ModifierQueryNode.Modifier.MOD_NONE
, becomes a ModifierQueryNode.Modifier.MOD_REQ
. For default
BooleanQueryNode
, it checks the default operator is
StandardQueryConfigHandler.Operator.AND
, if it is, the same operation when an
AndQueryNode
is found is applied to it. Each BooleanQueryNode
which direct parent is also a BooleanQueryNode
is removed (to ignore
the rules of precedence).
Modifier and Type | Field and Description |
---|---|
private java.util.ArrayList<QueryNode> |
childrenBuffer |
(package private) QueryConfigHandler |
queryConfigHandler |
(package private) static java.lang.String |
TAG_BOOLEAN_ROOT |
(package private) static java.lang.String |
TAG_MODIFIER |
(package private) static java.lang.String |
TAG_REMOVE |
private java.lang.Boolean |
usingAnd |
Constructor and Description |
---|
BooleanQuery2ModifierNodeProcessor() |
Modifier and Type | Method and Description |
---|---|
private QueryNode |
applyModifier(QueryNode node,
ModifierQueryNode.Modifier mod) |
protected void |
fillChildrenBufferAndApplyModifiery(QueryNode parent) |
QueryConfigHandler |
getQueryConfigHandler()
Returns the
QueryConfigHandler associated to the query tree if any,
otherwise it returns null |
protected boolean |
isDefaultBooleanQueryNode(QueryNode toTest) |
protected QueryNode |
postProcessNode(QueryNode node) |
protected QueryNode |
preProcessNode(QueryNode node) |
QueryNode |
process(QueryNode queryTree)
Processes a query node tree.
|
protected void |
processChildren(QueryNode queryTree) |
private QueryNode |
processIteration(QueryNode queryTree) |
void |
setQueryConfigHandler(QueryConfigHandler queryConfigHandler)
Sets the
QueryConfigHandler associated to the query tree. |
protected void |
tagModifierButDoNotOverride(QueryNode node,
ModifierQueryNode.Modifier mod) |
static final java.lang.String TAG_REMOVE
static final java.lang.String TAG_MODIFIER
static final java.lang.String TAG_BOOLEAN_ROOT
QueryConfigHandler queryConfigHandler
private final java.util.ArrayList<QueryNode> childrenBuffer
private java.lang.Boolean usingAnd
public QueryNode process(QueryNode queryTree) throws QueryNodeException
QueryNodeProcessor
null
.process
in interface QueryNodeProcessor
queryTree
- tree root nodeQueryNodeException
protected void processChildren(QueryNode queryTree) throws QueryNodeException
QueryNodeException
private QueryNode processIteration(QueryNode queryTree) throws QueryNodeException
QueryNodeException
protected void fillChildrenBufferAndApplyModifiery(QueryNode parent)
protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException
QueryNodeException
protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException
QueryNodeException
protected boolean isDefaultBooleanQueryNode(QueryNode toTest)
private QueryNode applyModifier(QueryNode node, ModifierQueryNode.Modifier mod)
protected void tagModifierButDoNotOverride(QueryNode node, ModifierQueryNode.Modifier mod)
public void setQueryConfigHandler(QueryConfigHandler queryConfigHandler)
QueryNodeProcessor
QueryConfigHandler
associated to the query tree.setQueryConfigHandler
in interface QueryNodeProcessor
public QueryConfigHandler getQueryConfigHandler()
QueryNodeProcessor
QueryConfigHandler
associated to the query tree if any,
otherwise it returns null
getQueryConfigHandler
in interface QueryNodeProcessor
QueryConfigHandler
associated to the query tree if any,
otherwise it returns null