| /* |
| * 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.profile.handlers.lightweight; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import org.apache.oodt.profile.ResourceAttributes; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Resource attributes that can be searched. |
| * |
| * @author Kelly |
| * @version $Revision: 1.1.1.1 $ |
| */ |
| public class SearchableResourceAttributes extends ResourceAttributes { |
| public SearchableResourceAttributes(SearchableProfile profile, Element node) { |
| super(profile, node); |
| } |
| |
| /** |
| * Produce a search result. |
| * |
| * @param value Desired value. |
| * @param operator What operator to use for comparison. |
| * @return a <code>Result</code> value. |
| */ |
| public Result result(String name, String value, String operator) { |
| if ("Identifier".equals(name)) |
| return computeResult(identifier, value, operator); |
| else if ("Title".equals(name)) |
| return computeResult(title, value, operator); |
| else if ("Format".equals(name)) |
| return computeResult(formats, value, operator); |
| else if ("Description".equals(name)) |
| return computeResult(description, value, operator); |
| else if ("Creator".equals(name)) |
| return computeResult(creators, value, operator); |
| else if ("Subject".equals(name)) |
| return computeResult(subjects, value, operator); |
| else if ("Publisher".equals(name)) |
| return computeResult(publishers, value, operator); |
| else if ("Contributor".equals(name)) |
| return computeResult(contributors, value, operator); |
| else if ("Date".equals(name)) |
| return computeResult(dates, value, operator); |
| else if ("Type".equals(name)) |
| return computeResult(types, value, operator); |
| else if ("Source".equals(name)) |
| return computeResult(sources, value, operator); |
| else if ("Language".equals(name)) |
| return computeResult(languages, value, operator); |
| else if ("Relation".equals(name)) |
| return computeResult(relations, value, operator); |
| else if ("Coverage".equals(name)) |
| return computeResult(coverages, value, operator); |
| else if ("Rights".equals(name)) |
| return computeResult(rights, value, operator); |
| else if ("resContext".equals(name)) |
| return computeResult(contexts, value, operator); |
| else if ("resClass".equals(name)) |
| return computeResult(clazz, value, operator); |
| else if ("resLocation".equals(name)) |
| return computeResult(locations, value, operator); |
| else |
| throw new IllegalArgumentException("Unknown attribute \"" + name + "\""); |
| } |
| |
| private Result computeResult(String a, String b, String op) { |
| int c = a.compareTo(b); |
| boolean t; |
| if ("EQ".equals(op) || "LIKE".equals(op)) |
| t = c == 0; |
| else if ("GE".equals(op)) |
| t = c >= 0; |
| else if ("GT".equals(op)) |
| t = c > 0; |
| else if ("LE".equals(op)) |
| t = c <= 0; |
| else if ("LT".equals(op)) |
| t = c < 0; |
| else if ("NE".equals(op) || "NOTLIKE".equals(op)) |
| t = c != 0; |
| else |
| throw new IllegalArgumentException("Unknown relational operator \"" + op + "\""); |
| if (t) |
| return new MatchingResult(new HashSet(profile.getProfileElements().values())); |
| else |
| return FalseResult.INSTANCE; |
| } |
| |
| private Result computeResult(List a, String b, String op) { |
| if (a == null || a.isEmpty()) return FalseResult.INSTANCE; |
| |
| Result f = FalseResult.INSTANCE; |
| Result t = new MatchingResult(new HashSet(profile.getProfileElements().values())); |
| Result rc = f; |
| if ("EQ".equals(op) || "LIKE".equals(op)) |
| if (a.contains(b)) rc = t; |
| else if ("NE".equals(op) || "NOTLIKE".equals(op)) |
| if (!a.contains(b)) rc = t; |
| else if ("LT".equals(op) || "GT".equals(op) || "LE".equals(op) || "GE".equals(op)) { |
| for (Iterator i = a.iterator(); i.hasNext();) { |
| String value = (String) i.next(); |
| rc = computeResult(value, b, op); |
| if (rc != f) break; |
| } |
| } else throw new IllegalArgumentException("Unknown relational operator \"" + op + "\""); |
| return rc; |
| } |
| |
| |
| } |