| /* |
| * 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.lucene.queryparser.flexible.spans; |
| |
| import org.apache.lucene.queryparser.flexible.core.nodes.FieldableNode; |
| import org.apache.lucene.util.AttributeImpl; |
| import org.apache.lucene.util.AttributeReflector; |
| |
| /** |
| * This attribute is used by the {@link UniqueFieldQueryNodeProcessor} |
| * processor. It holds a value that defines which is the unique field name that |
| * should be set in every {@link FieldableNode}. |
| * |
| * @see UniqueFieldQueryNodeProcessor |
| */ |
| public class UniqueFieldAttributeImpl extends AttributeImpl implements |
| UniqueFieldAttribute { |
| |
| private CharSequence uniqueField; |
| |
| public UniqueFieldAttributeImpl() { |
| clear(); |
| } |
| |
| @Override |
| public void clear() { |
| this.uniqueField = ""; |
| } |
| |
| @Override |
| public void setUniqueField(CharSequence uniqueField) { |
| this.uniqueField = uniqueField; |
| } |
| |
| @Override |
| public CharSequence getUniqueField() { |
| return this.uniqueField; |
| } |
| |
| @Override |
| public void copyTo(AttributeImpl target) { |
| |
| if (!(target instanceof UniqueFieldAttributeImpl)) { |
| throw new IllegalArgumentException( |
| "cannot copy the values from attribute UniqueFieldAttribute to an instance of " |
| + target.getClass().getName()); |
| } |
| |
| UniqueFieldAttributeImpl uniqueFieldAttr = (UniqueFieldAttributeImpl) target; |
| uniqueFieldAttr.uniqueField = uniqueField.toString(); |
| |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| |
| if (other instanceof UniqueFieldAttributeImpl) { |
| |
| return ((UniqueFieldAttributeImpl) other).uniqueField |
| .equals(this.uniqueField); |
| |
| } |
| |
| return false; |
| |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.uniqueField.hashCode(); |
| } |
| |
| @Override |
| public void reflectWith(AttributeReflector reflector) { |
| reflector.reflect(UniqueFieldAttribute.class, "uniqueField", uniqueField); |
| } |
| |
| } |