| /* |
| * 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.qpid.proton.apireconciliation; |
| |
| import java.lang.reflect.Method; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.qpid.proton.apireconciliation.reportwriter.AnnotationAccessor; |
| |
| public class Joiner |
| { |
| private final AnnotationAccessor _annotationAccessor; |
| |
| public Joiner(AnnotationAccessor annotationAccessor) |
| { |
| _annotationAccessor = annotationAccessor; |
| } |
| |
| /** |
| * Does an outer join of the supplied C functions with those named by the |
| * annotations on the Java methods. |
| */ |
| public ReconciliationReport join(List<String> protonCFunctions, Set<Method> javaMethods) |
| { |
| ReconciliationReport report = new ReconciliationReport(); |
| |
| Map<String, Method> cFunctionToJavaMethodMap = createOneToOneMappingBetweenCFunctionNameAndJavaMethodMap(javaMethods); |
| |
| Set<Method> unannotatedMethods = new HashSet<Method>(javaMethods); |
| unannotatedMethods.removeAll(cFunctionToJavaMethodMap.values()); |
| |
| for (Method unannotatedMethod : unannotatedMethods) |
| { |
| report.addRow(null, unannotatedMethod); |
| } |
| |
| for (String protonCFunction : protonCFunctions) |
| { |
| Method javaMethod = cFunctionToJavaMethodMap.remove(protonCFunction); |
| report.addRow(protonCFunction, javaMethod); |
| } |
| |
| // add anything remaining in annotatedNameToMethod to report as Java methods with an unknown annotation |
| for (Method method : cFunctionToJavaMethodMap.values()) |
| { |
| report.addRow(null, method); |
| } |
| |
| return report; |
| } |
| |
| private Map<String, Method> createOneToOneMappingBetweenCFunctionNameAndJavaMethodMap(Set<Method> javaMethods) |
| { |
| Map<String, Method> annotatedNameToMethod = new HashMap<String, Method>(); |
| Set<String> functionsWithDuplicateJavaMappings = new HashSet<String>(); |
| |
| for (Method method : javaMethods) |
| { |
| String functionName = _annotationAccessor.getAnnotationValue(method); |
| if (functionName != null) |
| { |
| if (annotatedNameToMethod.containsKey(functionName)) |
| { |
| functionsWithDuplicateJavaMappings.add(functionName); |
| } |
| annotatedNameToMethod.put(functionName, method); |
| } |
| } |
| |
| // Any functions that had duplicate java method names are removed. |
| for (String functionName : functionsWithDuplicateJavaMappings) |
| { |
| annotatedNameToMethod.remove(functionName); |
| } |
| |
| return annotatedNameToMethod; |
| } |
| |
| } |