content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   *
   * 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.androidannotations.ormlite.helper;
  
  import java.util.List;
  
  import javax.lang.model.element.Element;
  import javax.lang.model.element.TypeElement;
  import javax.lang.model.type.DeclaredType;
  import javax.lang.model.type.TypeKind;
  import javax.lang.model.type.TypeMirror;
  import javax.lang.model.util.Types;
  
  import org.androidannotations.helper.TargetAnnotationHelper;
  
  public class OrmLiteHelper {
  
  	private final TargetAnnotationHelper helper;
  
  	private DeclaredType daoParametrizedType;
  	private DeclaredType runtimeExceptionDaoParametrizedType;
  
  	private TypeElement daoTypeElement;
  	private TypeElement runtimeExceptionDaoTypeElement;
  
  	public OrmLiteHelper(TargetAnnotationHelper helper) {
  		this.helper = helper;
  	}
  
  	public TypeMirror getEntityType(Element element) {
  		return getEntityOrIdType(element, 0);
  	}
  
  	public TypeMirror getEntityIdType(Element element) {
  		return getEntityOrIdType(element, 1);
  	}
  
  	private TypeMirror getEntityOrIdType(Element element, int index) {
  		if (isSubtypeOfDao(element.asType())) {
  			DeclaredType declaredType = (DeclaredType) element.asType();
  			List<? extends TypeMirror> typeArguments = declaredType.getTypeArguments();
  			if (typeArguments.size() == 2) {
  				return typeArguments.get(index);
  			}
  		}
  
  		List<? extends TypeMirror> superTypes = helper.directSupertypes(element.asType());
  		for (TypeMirror superType : superTypes) {
  
  			if (superType.getKind() == TypeKind.DECLARED && isSubtypeOfDao(superType)) {
  
  				DeclaredType superDeclaredType = (DeclaredType) superType;
  				List<? extends TypeMirror> typeArguments = superDeclaredType.getTypeArguments();
  				if (typeArguments.size() == 2) {
  					return typeArguments.get(index);
  				}
  			}
  		}
  		return null;
  	}
  
  	private boolean isSubtypeOfDao(TypeMirror type) {
  		return helper.isSubtype(type, daoParametrizedType) || helper.isSubtype(type, runtimeExceptionDaoParametrizedType);
  	}
  
  	public DeclaredType getDaoParametrizedType() {
  		if (daoParametrizedType == null) {
  			createDaoParametrizedTypes();
  		}
  		return daoParametrizedType;
  	}
  
  	public DeclaredType getRuntimeExceptionDaoParametrizedType() {
  		if (runtimeExceptionDaoParametrizedType == null) {
  			createDaoParametrizedTypes();
  		}
  		return runtimeExceptionDaoParametrizedType;
  	}
  
  	public DeclaredType getTypedDao(Element element) {
  		if (daoTypeElement == null) {
  			createDaoParametrizedTypes();
  		}
  		return helper.getTypeUtils().getDeclaredType(daoTypeElement, getEntityType(element), getEntityIdType(element));
  	}
  
  	public DeclaredType getTypedRuntimeExceptionDao(Element element) {
  		if (runtimeExceptionDaoTypeElement == null) {
  			createDaoParametrizedTypes();
  		}
  		return helper.getTypeUtils().getDeclaredType(runtimeExceptionDaoTypeElement, getEntityType(element), getEntityIdType(element));
  	}
  
  	private void createDaoParametrizedTypes() {
  		daoTypeElement = helper.typeElementFromQualifiedName(OrmLiteClasses.DAO);
  		runtimeExceptionDaoTypeElement = helper.typeElementFromQualifiedName(OrmLiteClasses.RUNTIME_EXCEPTION_DAO);
  
  		Types typeUtils = helper.getTypeUtils();
  		TypeMirror wildcardType = typeUtils.getWildcardType(null, null);
  		daoParametrizedType = helper.getTypeUtils().getDeclaredType(daoTypeElement, wildcardType, wildcardType);
  		runtimeExceptionDaoParametrizedType = helper.getTypeUtils().getDeclaredType(runtimeExceptionDaoTypeElement, wildcardType, wildcardType);
  	}
  }
  