package org.apache.lucene.queryParser.standard.config;
/**
* 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.
*/
import org.apache.lucene.queryParser.core.config.QueryConfigHandler;
import org.apache.lucene.queryParser.standard.processors.GroupQueryNodeProcessor;
import org.apache.lucene.util.AttributeImpl;
/**
* This attribute is used by {@link GroupQueryNodeProcessor} processor and must
* be defined in the {@link QueryConfigHandler}. This attribute tells the
* processor which is the default boolean operator when no operator is defined
* between terms. <br/>
*
* @see org.apache.lucene.queryParser.standard.config.DefaultOperatorAttribute
*/
public class DefaultOperatorAttributeImpl extends AttributeImpl
implements DefaultOperatorAttribute {
private static final long serialVersionUID = -6804760312723049526L;
private Operator operator = Operator.OR;
public DefaultOperatorAttributeImpl() {
// empty constructor
}
public void setOperator(Operator operator) {
if (operator == null) {
throw new IllegalArgumentException("default operator cannot be null!");
}
this.operator = operator;
}
public Operator getOperator() {
return this.operator;
}
@Override
public void clear() {
throw new UnsupportedOperationException();
}
@Override
public void copyTo(AttributeImpl target) {
throw new UnsupportedOperationException();
}
@Override
public boolean equals(Object other) {
if (other instanceof DefaultOperatorAttributeImpl) {
DefaultOperatorAttributeImpl defaultOperatorAttr = (DefaultOperatorAttributeImpl) other;
if (defaultOperatorAttr.getOperator() == this.getOperator()) {
return true;
}
}
return false;
}
@Override
public int hashCode() {
return getOperator().hashCode() * 31;
}
@Override
public String toString() {
return "<defaultOperatorAttribute operator=" + this.operator.name() + "/>";
}
}