| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed 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 signature.compare.model.impl; |
| |
| import java.lang.reflect.Field; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Set; |
| |
| import signature.compare.model.IDelta; |
| import signature.compare.model.DeltaType; |
| |
| public abstract class SigDelta<T> implements IDelta<T> { |
| private T from; |
| private T to; |
| |
| public SigDelta(T from, T to) { |
| this.from = from; |
| this.to = to; |
| } |
| |
| public final T getFrom() { |
| return from; |
| } |
| |
| public final T getTo() { |
| return to; |
| } |
| |
| public final DeltaType getType() { |
| if (from == null && to != null) { |
| return DeltaType.ADDED; |
| } |
| if (from != null && to == null) { |
| return DeltaType.REMOVED; |
| } |
| return DeltaType.CHANGED; |
| } |
| |
| private static <T extends IDelta<?>> Set<T> getDeltas(Set<T> deltas, |
| DeltaType type) { |
| Set<T> addedElements = new HashSet<T>(); |
| for (T delta : deltas) { |
| if (type.equals(delta.getType())) { |
| addedElements.add(delta); |
| } |
| } |
| return addedElements; |
| } |
| |
| public static <T extends IDelta<?>> Set<T> getAdded(Set<T> deltas) { |
| return getDeltas(deltas, DeltaType.ADDED); |
| } |
| |
| public static <T extends IDelta<?>> Set<T> getRemoved(Set<T> deltas) { |
| return getDeltas(deltas, DeltaType.REMOVED); |
| } |
| |
| public static <T extends IDelta<?>> Set<T> getChanged(Set<T> deltas) { |
| return getDeltas(deltas, DeltaType.CHANGED); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder builder = new StringBuilder(); |
| builder.append(getClass().getSimpleName()); |
| builder.append(":\n"); |
| |
| List<Field> allFields = new LinkedList<Field>(); |
| |
| Class<?> actualClass = getClass(); |
| |
| // add all fields / super classes also |
| do { |
| allFields.addAll(Arrays.asList(actualClass.getDeclaredFields())); |
| actualClass = actualClass.getSuperclass(); |
| } while (actualClass != Object.class); |
| |
| builder.append("from: "); |
| builder.append(from); |
| builder.append("\nto: "); |
| builder.append(to); |
| builder.append("\n"); |
| try { |
| for (Field field : allFields) { |
| if (!ignore.contains(field.getName())) { |
| field.setAccessible(true); |
| Object delta = field.get(this); |
| if (delta != null) { |
| builder.append(field.getName()); |
| builder.append(":\n"); |
| builder.append(delta); |
| } |
| } |
| } |
| } catch (IllegalArgumentException e) { |
| e.printStackTrace(); |
| } catch (IllegalAccessException e) { |
| e.printStackTrace(); |
| } catch (SecurityException e) { |
| e.printStackTrace(); |
| } |
| |
| return builder.toString(); |
| } |
| |
| private static Set<String> ignore = new HashSet<String>(); |
| { |
| ignore.add("from"); |
| ignore.add("to"); |
| ignore.add("reason"); |
| ignore.add("ignore"); // =) |
| } |
| } |