| /* |
| * 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.oodt.cas.catalog.query; |
| |
| //JDK imports |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * @author bfoster |
| * @version $Revision$ |
| * |
| * <p> |
| * A Expression for querying against a CatalogServices Metadata |
| * <p> |
| */ |
| public abstract class QueryExpression implements Cloneable { |
| |
| protected Set<String> bucketNames; |
| |
| public QueryExpression() {} |
| |
| public QueryExpression(Set<String> bucketNames) { |
| this.bucketNames = new HashSet<String>(bucketNames); |
| } |
| |
| public Set<String> getBucketNames() { |
| return (this.bucketNames != null) ? new HashSet<String>(this.bucketNames) : null; |
| } |
| |
| public void setBucketNames(Set<String> bucketNames) { |
| this.bucketNames = bucketNames; |
| } |
| |
| public abstract String toString(); |
| |
| public abstract QueryExpression clone(); |
| |
| } |