use of org.apache.lucene.queryparser.flexible.core.nodes.BooleanQueryNode in project lucene-solr by apache.
the class StandardSyntaxParser method ModClause.
// QueryNode Query(CharSequence field) :
// {
// List clauses = new ArrayList();
// List modifiers = new ArrayList();
// QueryNode q, firstQuery=null;
// ModifierQueryNode.Modifier mods;
// int conj;
// }
// {
// mods=Modifiers() q=Clause(field)
// {
// if (mods == ModifierQueryNode.Modifier.MOD_NONE) firstQuery=q;
//
// // do not create modifier nodes with MOD_NONE
// if (mods != ModifierQueryNode.Modifier.MOD_NONE) {
// q = new ModifierQueryNode(q, mods);
// }
// clauses.add(q);
// }
// (
// conj=Conjunction() mods=Modifiers() q=Clause(field)
// {
// // do not create modifier nodes with MOD_NONE
// if (mods != ModifierQueryNode.Modifier.MOD_NONE) {
// q = new ModifierQueryNode(q, mods);
// }
// clauses.add(q);
// //TODO: figure out what to do with AND and ORs
// }
// )*
// {
// if (clauses.size() == 1 && firstQuery != null)
// return firstQuery;
// else {
// return new BooleanQueryNode(clauses);
// }
// }
// }
public final QueryNode ModClause(CharSequence field) throws ParseException {
QueryNode q;
ModifierQueryNode.Modifier mods;
mods = Modifiers();
q = Clause(field);
if (mods != ModifierQueryNode.Modifier.MOD_NONE) {
q = new ModifierQueryNode(q, mods);
}
{
if (true)
return q;
}
throw new Error("Missing return statement in function");
}
use of org.apache.lucene.queryparser.flexible.core.nodes.BooleanQueryNode in project lucene-solr by apache.
the class BooleanQueryNodeBuilder method build.
@Override
public BooleanQuery build(QueryNode queryNode) throws QueryNodeException {
BooleanQueryNode booleanNode = (BooleanQueryNode) queryNode;
BooleanQuery.Builder bQuery = new BooleanQuery.Builder();
List<QueryNode> children = booleanNode.getChildren();
if (children != null) {
for (QueryNode child : children) {
Object obj = child.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
if (obj != null) {
Query query = (Query) obj;
try {
bQuery.add(query, getModifierValue(child));
} catch (TooManyClauses ex) {
throw new QueryNodeException(new MessageImpl(QueryParserMessages.TOO_MANY_BOOLEAN_CLAUSES, BooleanQuery.getMaxClauseCount(), queryNode.toQueryString(new EscapeQuerySyntaxImpl())), ex);
}
}
}
}
return bQuery.build();
}
use of org.apache.lucene.queryparser.flexible.core.nodes.BooleanQueryNode in project lucene-solr by apache.
the class SpanOrQueryNodeBuilder method build.
@Override
public SpanOrQuery build(QueryNode node) throws QueryNodeException {
// validates node
BooleanQueryNode booleanNode = (BooleanQueryNode) node;
List<QueryNode> children = booleanNode.getChildren();
SpanQuery[] spanQueries = new SpanQuery[children.size()];
int i = 0;
for (QueryNode child : children) {
spanQueries[i++] = (SpanQuery) child.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
}
return new SpanOrQuery(spanQueries);
}
use of org.apache.lucene.queryparser.flexible.core.nodes.BooleanQueryNode in project lucene-skos by behas.
the class SKOSQueryNodeProcessor method postProcessNode.
@Override
protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException {
if (node instanceof TextableQueryNode && !(node instanceof WildcardQueryNode) && !(node instanceof FuzzyQueryNode) && !(node instanceof RegexpQueryNode) && !(node.getParent() instanceof RangeQueryNode)) {
FieldQueryNode fieldNode = ((FieldQueryNode) node);
String text = fieldNode.getTextAsString();
String field = fieldNode.getFieldAsString();
CachingTokenFilter buffer = null;
PositionIncrementAttribute posIncrAtt = null;
int numTokens = 0;
int positionCount = 0;
boolean severalTokensAtSamePosition = false;
try {
try (TokenStream source = this.analyzer.tokenStream(field, text)) {
buffer = new CachingTokenFilter(source);
buffer.reset();
if (buffer.hasAttribute(PositionIncrementAttribute.class)) {
posIncrAtt = buffer.getAttribute(PositionIncrementAttribute.class);
}
try {
while (buffer.incrementToken()) {
numTokens++;
int positionIncrement = (posIncrAtt != null) ? posIncrAtt.getPositionIncrement() : 1;
if (positionIncrement != 0) {
positionCount += positionIncrement;
} else {
severalTokensAtSamePosition = true;
}
}
} catch (IOException e) {
// ignore
}
// rewind the buffer stream
//will never through on subsequent reset calls
buffer.reset();
} catch (IOException e) {
throw new RuntimeException(e);
}
if (!buffer.hasAttribute(CharTermAttribute.class)) {
return new NoTokenFoundQueryNode();
}
CharTermAttribute termAtt = buffer.getAttribute(CharTermAttribute.class);
if (numTokens == 0) {
return new NoTokenFoundQueryNode();
} else if (numTokens == 1) {
String term = null;
try {
boolean hasNext;
hasNext = buffer.incrementToken();
assert hasNext == true;
term = termAtt.toString();
} catch (IOException e) {
// safe to ignore, because we know the number of tokens
}
fieldNode.setText(term);
return fieldNode;
} else if (severalTokensAtSamePosition || !(node instanceof QuotedFieldQueryNode)) {
if (positionCount == 1 || !(node instanceof QuotedFieldQueryNode)) {
if (positionCount == 1) {
// simple case: only one position, with synonyms
LinkedList<QueryNode> children = new LinkedList<>();
for (int i = 0; i < numTokens; i++) {
String term = null;
try {
boolean hasNext = buffer.incrementToken();
assert hasNext == true;
term = termAtt.toString();
} catch (IOException e) {
// safe to ignore, because we know the number of tokens
}
if (buffer.hasAttribute(SKOSTypeAttribute.class) && boosts != null) {
SKOSTypeAttribute skosAttr = buffer.getAttribute(SKOSTypeAttribute.class);
children.add(new BoostQueryNode(new FieldQueryNode(field, term, -1, -1), getBoost(skosAttr.getSkosType())));
} else {
children.add(new FieldQueryNode(field, term, -1, -1));
}
}
return new GroupQueryNode(new StandardBooleanQueryNode(children, positionCount == 1));
} else {
// multiple positions
QueryNode q = new StandardBooleanQueryNode(Collections.<QueryNode>emptyList(), false);
QueryNode currentQuery = null;
for (int i = 0; i < numTokens; i++) {
String term = null;
try {
boolean hasNext = buffer.incrementToken();
assert hasNext == true;
term = termAtt.toString();
} catch (IOException e) {
// safe to ignore, because we know the number of tokens
}
if (posIncrAtt != null && posIncrAtt.getPositionIncrement() == 0) {
if (!(currentQuery instanceof BooleanQueryNode)) {
QueryNode t = currentQuery;
currentQuery = new StandardBooleanQueryNode(Collections.<QueryNode>emptyList(), true);
((BooleanQueryNode) currentQuery).add(t);
}
((BooleanQueryNode) currentQuery).add(new FieldQueryNode(field, term, -1, -1));
} else {
if (currentQuery != null) {
if (this.defaultOperator == Operator.OR) {
q.add(currentQuery);
} else {
q.add(new ModifierQueryNode(currentQuery, Modifier.MOD_REQ));
}
}
currentQuery = new FieldQueryNode(field, term, -1, -1);
}
}
if (this.defaultOperator == Operator.OR) {
q.add(currentQuery);
} else {
q.add(new ModifierQueryNode(currentQuery, Modifier.MOD_REQ));
}
if (q instanceof BooleanQueryNode) {
q = new GroupQueryNode(q);
}
return q;
}
} else {
// phrase query:
MultiPhraseQueryNode mpq = new MultiPhraseQueryNode();
List<FieldQueryNode> multiTerms = new ArrayList<>();
int position = -1;
int i = 0;
int termGroupCount = 0;
for (; i < numTokens; i++) {
String term = null;
int positionIncrement = 1;
try {
boolean hasNext = buffer.incrementToken();
assert hasNext == true;
term = termAtt.toString();
if (posIncrAtt != null) {
positionIncrement = posIncrAtt.getPositionIncrement();
}
} catch (IOException e) {
// safe to ignore, because we know the number of tokens
}
if (positionIncrement > 0 && multiTerms.size() > 0) {
for (FieldQueryNode termNode : multiTerms) {
if (this.positionIncrementsEnabled) {
termNode.setPositionIncrement(position);
} else {
termNode.setPositionIncrement(termGroupCount);
}
mpq.add(termNode);
}
// Only increment once for each "group" of
// terms that were in the same position:
termGroupCount++;
multiTerms.clear();
}
position += positionIncrement;
multiTerms.add(new FieldQueryNode(field, term, -1, -1));
}
for (FieldQueryNode termNode : multiTerms) {
if (this.positionIncrementsEnabled) {
termNode.setPositionIncrement(position);
} else {
termNode.setPositionIncrement(termGroupCount);
}
mpq.add(termNode);
}
return mpq;
}
} else {
TokenizedPhraseQueryNode pq = new TokenizedPhraseQueryNode();
int position = -1;
for (int i = 0; i < numTokens; i++) {
String term = null;
int positionIncrement = 1;
try {
boolean hasNext = buffer.incrementToken();
assert hasNext == true;
term = termAtt.toString();
if (posIncrAtt != null) {
positionIncrement = posIncrAtt.getPositionIncrement();
}
} catch (IOException e) {
// safe to ignore, because we know the number of tokens
}
FieldQueryNode newFieldNode = new FieldQueryNode(field, term, -1, -1);
if (this.positionIncrementsEnabled) {
position += positionIncrement;
newFieldNode.setPositionIncrement(position);
} else {
newFieldNode.setPositionIncrement(i);
}
pq.add(newFieldNode);
}
return pq;
}
} finally {
if (buffer != null) {
try {
buffer.close();
} catch (IOException e) {
// safe to ignore
}
}
}
}
return node;
}
use of org.apache.lucene.queryparser.flexible.core.nodes.BooleanQueryNode in project lucene-solr by apache.
the class StandardSyntaxParser method Query.
// These changes were made to introduce operator precedence:
// - Clause() now returns a QueryNode.
// - The modifiers are consumed by Clause() and returned as part of the QueryNode Object
// - Query does not consume conjunctions (AND, OR) anymore.
// - This is now done by two new non-terminals: ConjClause and DisjClause
// The parse tree looks similar to this:
// Query ::= DisjQuery ( DisjQuery )*
// DisjQuery ::= ConjQuery ( OR ConjQuery )*
// ConjQuery ::= Clause ( AND Clause )*
// Clause ::= [ Modifier ] ...
public final QueryNode Query(CharSequence field) throws ParseException {
Vector<QueryNode> clauses = null;
QueryNode c, first = null;
first = DisjQuery(field);
label_1: while (true) {
switch((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
case NOT:
case PLUS:
case MINUS:
case LPAREN:
case QUOTED:
case TERM:
case REGEXPTERM:
case RANGEIN_START:
case RANGEEX_START:
case NUMBER:
;
break;
default:
jj_la1[2] = jj_gen;
break label_1;
}
c = DisjQuery(field);
if (clauses == null) {
clauses = new Vector<QueryNode>();
clauses.addElement(first);
}
clauses.addElement(c);
}
if (clauses != null) {
{
if (true)
return new BooleanQueryNode(clauses);
}
} else {
// the returned result drops the negation.
if (first instanceof ModifierQueryNode) {
ModifierQueryNode m = (ModifierQueryNode) first;
if (m.getModifier() == ModifierQueryNode.Modifier.MOD_NOT) {
{
if (true)
return new BooleanQueryNode(Arrays.<QueryNode>asList(m));
}
}
}
{
if (true)
return first;
}
}
throw new Error("Missing return statement in function");
}
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