Add test cases and re-org packages

src/main/java/org/springframework/classify/BinaryExceptionClassifier.java

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+/*
+ * Copyright 2006-2007 the original author or authors.
+ *
+ * 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 org.springframework.classify;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * A {@link Classifier} for exceptions that has only two classes (true and
+ * false). Classifies objects according to their inheritance relation with the
+ * supplied types. If the object to be classified is one of the provided types,
+ * or is a subclass of one of the types, then the non-default value is returned
+ * (usually true).
+ * 
+ * @see SubclassClassifier
+ * 
+ * @author Dave Syer
+ * 
+ */
+public class BinaryExceptionClassifier extends SubclassClassifier<Throwable, Boolean> {
+
+	/**
+	 * Create a binary exception classifier with the provided default value.
+	 * 
+	 * @param defaultValue defaults to false
+	 */
+	public BinaryExceptionClassifier(boolean defaultValue) {
+		super(defaultValue);
+	}
+
+	/**
+	 * Create a binary exception classifier with the provided classes and their
+	 * subclasses. The mapped value for these exceptions will be the one
+	 * provided (which will be the opposite of the default).
+	 * 
+	 * @param value
+	 */
+	public BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses, boolean value) {
+		this(!value);
+		if (exceptionClasses != null) {
+			Map<Class<? extends Throwable>, Boolean> map = new HashMap<Class<? extends Throwable>, Boolean>();
+			for (Class<? extends Throwable> type : exceptionClasses) {
+				map.put(type, !getDefault());
+			}
+			setTypeMap(map);
+		}
+	}
+
+	/**
+	 * Create a binary exception classifier with the default value false and
+	 * value mapping true for the provided classes and their subclasses.
+	 */
+	public BinaryExceptionClassifier(Collection<Class<? extends Throwable>> exceptionClasses) {
+		this(exceptionClasses, true);
+	}
+
+	/**
+	 * Create a binary exception classifier using the given classification map
+	 * and a default classification of false.
+	 * 
+	 * @param typeMap
+	 */
+	public BinaryExceptionClassifier(Map<Class<? extends Throwable>, Boolean> typeMap) {
+		this(typeMap, false);
+	}
+
+	/**
+	 * Create a binary exception classifier using the given classification map
+	 * and a default classification of false.
+	 * 
+	 * @param typeMap
+	 */
+	public BinaryExceptionClassifier(Map<Class<? extends Throwable>, Boolean> typeMap, boolean defaultValue) {
+		super(typeMap, defaultValue);
+	}
+
+}