org.apache.jackrabbit.oak.query.fulltext.FullTextOr Maven / Gradle / Ivy
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* 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.fulltext;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
/**
* A fulltext "or" condition.
*/
public class FullTextOr extends FullTextExpression {
public final List list;
public FullTextOr(List list) {
this.list = list;
}
@Override
public boolean evaluate(String value) {
for (FullTextExpression e : list) {
if (e.evaluate(value)) {
return true;
}
}
return false;
}
@Override
public FullTextExpression simplify() {
Set set = getUniqueSet(list);
if (set.size() == 1) {
return set.iterator().next();
}
ArrayList l = new ArrayList(
set.size());
l.addAll(set);
return new FullTextOr(l);
}
static Set getUniqueSet(
List list) {
// remove duplicates, but keep order
LinkedHashSet set = new LinkedHashSet(list.size());
for (int i = 0; i < list.size(); i++) {
set.add(list.get(i).simplify());
}
return set;
}
@Override
public String toString() {
StringBuilder buff = new StringBuilder();
int i = 0;
for (FullTextExpression e : list) {
if (i++ > 0) {
buff.append(" OR ");
}
if (e.getPrecedence() < getPrecedence()) {
buff.append('(');
}
buff.append(e.toString());
if (e.getPrecedence() < getPrecedence()) {
buff.append(')');
}
}
return buff.toString();
}
@Override
public int getPrecedence() {
return PRECEDENCE_OR;
}
@Override
public boolean accept(FullTextVisitor v) {
return v.visit(this);
}
}