org.apache.jackrabbit.oak.query.ast.FullTextSearchScoreImpl Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.jackrabbit.oak.query.ast;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import javax.jcr.PropertyType;
import org.apache.jackrabbit.oak.api.PropertyValue;
import org.apache.jackrabbit.oak.query.index.FilterImpl;
import org.apache.jackrabbit.oak.plugins.memory.PropertyValues;
import org.apache.jackrabbit.oak.spi.query.QueryConstants;
import org.apache.jackrabbit.oak.spi.query.QueryIndex.OrderEntry;
/**
* A fulltext search score expression.
*/
public class FullTextSearchScoreImpl extends DynamicOperandImpl {
private final String selectorName;
private SelectorImpl selector;
public FullTextSearchScoreImpl(String selectorName) {
this.selectorName = selectorName;
}
@Override
boolean accept(AstVisitor v) {
return v.visit(this);
}
@Override
public String toString() {
return "score(" + quote(selectorName) + ')';
}
@Override
public PropertyExistenceImpl getPropertyExistence() {
return null;
}
@Override
public Set getSelectors() {
return Collections.singleton(selector);
}
@Override
public PropertyValue currentProperty() {
PropertyValue p = selector.currentOakProperty(QueryConstants.JCR_SCORE);
if (p == null) {
// TODO if score() is not supported by the index, use the value 0.0?
return PropertyValues.newDouble(0.0);
}
return p;
}
public void bindSelector(SourceImpl source) {
selector = source.getExistingSelector(selectorName);
}
@Override
public void restrict(FilterImpl f, Operator operator, PropertyValue v) {
if (f.getSelector().equals(selector)) {
if (operator == Operator.NOT_EQUAL && v != null) {
// not supported
return;
}
f.restrictProperty(QueryConstants.JCR_SCORE, operator, v);
}
}
@Override
public void restrictList(FilterImpl f, List list) {
// optimizations of the type "jcr:score() in(a, b, c)" are not supported
}
@Override
public String getFunction(SelectorImpl s) {
// optimizations of the type "upper(jcr:score()) = '1'" are not supported
return null;
}
@Override
public boolean canRestrictSelector(SelectorImpl s) {
return s.equals(selector);
}
@Override
int getPropertyType() {
return PropertyType.DOUBLE;
}
@Override
public DynamicOperandImpl createCopy() {
return new FullTextSearchScoreImpl(selectorName);
}
@Override
public OrderEntry getOrderEntry(SelectorImpl s, OrderingImpl o) {
return null;
}
}