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'Databene Formats' is an open source software library for supporting data file and other formats like CSV, fixed width files, XLS, Properties and Regex. It is designed for multithreaded use and high performance.

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/*
 * Copyright (C) 2011-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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.databene.formats.compare;

import org.databene.commons.Converter;
import org.databene.commons.NullSafeComparator;

/**
 * Represents a difference between the state of two objects.
 * Created: 21.11.2013 11:29:35
 * @since 1.0.5
 * @author Volker Bergmann
 */

public class DiffDetail {
	
	private Object expected;
	private Object actual;
	private String objectClassifier;
	private DiffDetailType type;
	private String locator1;
	private String locator2;
	private Converter formatter;
	
	public DiffDetail(Object expected, Object actual, String objectClassifier, DiffDetailType type, Converter formatter) {
		this(expected, actual, objectClassifier, type, null, null, formatter);
	}
	
	public DiffDetail(Object expected, Object actual, String objectClassifier, DiffDetailType type, String locator1, String locator2, Converter formatter) {
		this.expected = expected;
		this.actual = actual;
		this.objectClassifier = objectClassifier;
		this.type = type;
		this.locator1 = locator1;
		this.locator2 = locator2;
		this.formatter = formatter;
	}

	public Object getExpected() {
		return expected;
	}
	
	public Object getActual() {
		return actual;
	}
	
	public String getObjectClassifier() {
		return objectClassifier;
	}
	
	public DiffDetailType getType() {
		return type;
	}
	
	public String getLocator1() {
		return locator1;
	}
	
	public String getLocator2() {
		return locator2;
	}
	
	public void setFormat(Converter formatter) {
		this.formatter = formatter;
	}
	
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((locator1 == null) ? 0 : locator1.hashCode());
		result = prime * result + ((locator2 == null) ? 0 : locator2.hashCode());
		result = prime * result + ((objectClassifier == null) ? 0 : objectClassifier.hashCode());
		result = prime * result + ((type == null) ? 0 : type.hashCode());
		result = prime * result + ((expected == null) ? 0 : expected.hashCode());
		result = prime * result + ((actual == null) ? 0 : actual.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null || getClass() != obj.getClass())
			return false;
		DiffDetail that = (DiffDetail) obj;
		return (NullSafeComparator.equals(this.expected, that.expected) &&
				NullSafeComparator.equals(this.actual, that.actual) &&
				NullSafeComparator.equals(this.type, that.type) &&
				NullSafeComparator.equals(this.locator1, that.locator1) &&
				NullSafeComparator.equals(this.locator2, that.locator2));
	}

	@Override
	public String toString() {
		switch (type) {
			case DIFFERENT :  return "Different " + objectClassifier + ": expected " + format(expected) + " but found " + format(actual) + (locator2 != null ? " at " + locator2 : "");
			case MISSING :    return "Missing " + objectClassifier + " " + format(expected) + " at " + locator1;
			case UNEXPECTED : return "Unexpected " + objectClassifier + " " + format(actual) + " found at " + locator2;
			case MOVED :      return "Moved " + objectClassifier + " " + format(expected) + " from " + locator1 + " to " + locator2;
			default :         return type + " " + objectClassifier + ", expected " + format(expected) + ", found " + actual + " " + locator1 + " " + locator2;
		}
	}

	protected String format(Object value) {
		return formatter.convert(value);
	}
	
}