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JMapper Framework is a java bean mapper based on javassist. JMapper exposes interesting features as relational mapping, dynamic conversions and more

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/**
 * Copyright (C) 2012 - 2016 Alessandro Vurro.
 *
 * 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 com.googlecode.jmapper.operations.analyzer;

import static com.googlecode.jmapper.conversions.implicit.ConversionAnalyzer.getConversionType;
import static com.googlecode.jmapper.enums.ConversionType.ABSENT;
import static com.googlecode.jmapper.enums.ConversionType.UNDEFINED;
import static com.googlecode.jmapper.enums.OperationType.BASIC_INSTRUCTION;
import static com.googlecode.jmapper.util.ClassesManager.areEqual;
import static com.googlecode.jmapper.util.ClassesManager.areMappedObjects;
import static com.googlecode.jmapper.util.ClassesManager.isAssignableFrom;
import static com.googlecode.jmapper.util.GeneralUtility.isBasic;
import static com.googlecode.jmapper.util.GeneralUtility.isStructure;

import java.lang.reflect.Field;

import com.googlecode.jmapper.operations.IOperationAnalyzer;
import com.googlecode.jmapper.operations.info.InfoOperation;
import com.googlecode.jmapper.xml.XML;
/**
 * This Class analyzes operations between basic types.
 * @author Alessandro Vurro
 *
 */
public final class BasicAnalyzer implements IOperationAnalyzer{

	/** xml object */
	private XML xml;

	/**
	 * Takes as input an xml object that represents the xml configuration.
	 * @param xml xml object
	 */
	public BasicAnalyzer(XML xml) {
		this.xml = xml;
	}

	public InfoOperation getInfoOperation(final Field destination, final Field source) {
		
		InfoOperation operation = new InfoOperation().setInstructionType(BASIC_INSTRUCTION)
													 .setConversionType (UNDEFINED);
		
		if(isAssignableFrom(destination,source))
			return operation.setConversionType (ABSENT);
		
		if(isBasic(destination.getType()) && isBasic(source.getType()))
			return operation.setConversionType(getConversionType(destination, source));
		
		return operation;
	}

	public boolean verifyConditions(Field destination, Field source) {
		Class dClass = destination.getType();
		Class sClass = source.getType();
		// if the fields aren't structure or mapped objects
		return  (!isStructure(dClass) && !isStructure(sClass) && !areMappedObjects(dClass,sClass,xml)
				 // and destination is equal or assignable from source
				 && (areEqual(destination,source) || isAssignableFrom(destination,source))
				) 
				// or are both basic classes
				||	(isBasic(dClass) && isBasic(sClass));
	}

}