com.abubusoft.kripton.processor.sqlite.SelectBeanHelper Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright 2015, 2017 Francesco Benincasa ([email protected]).
 *
 * 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.abubusoft.kripton.processor.sqlite;

import static com.abubusoft.kripton.processor.core.reflect.TypeUtility.typeName;

import java.util.Set;

import com.abubusoft.kripton.common.SQLTypeAdapterUtils;
import com.abubusoft.kripton.processor.core.ImmutableUtility;
import com.abubusoft.kripton.processor.sqlite.grammars.jql.JQLProjection;
import com.abubusoft.kripton.processor.sqlite.model.SQLiteDaoDefinition;
import com.abubusoft.kripton.processor.sqlite.model.SQLiteEntity;
import com.abubusoft.kripton.processor.sqlite.model.SQLProperty;
import com.abubusoft.kripton.processor.sqlite.model.SQLiteModelMethod;
import com.abubusoft.kripton.processor.sqlite.transform.SQLTransformer;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeName;
import com.squareup.javapoet.TypeSpec;

/**
 * The Class SelectBeanHelper.
 *
 * @author Francesco Benincasa ([email protected])
 * @since 17/mag/2016
 */
public class SelectBeanHelper extends AbstractSelectCodeGenerator {

	/*
	 * (non-Javadoc)
	 * 
	 * @see com.abubusoft.kripton.processor.sqlite.AbstractSelectCodeGenerator#generateSpecializedPart(com.abubusoft.kripton.processor.sqlite.model.SQLiteModelMethod,
	 * com.squareup.javapoet.TypeSpec.Builder, com.squareup.javapoet.MethodSpec.Builder, java.util.Set, boolean)
	 */
	@Override
	public void generateSpecializedPart(SQLiteModelMethod method, TypeSpec.Builder classBuilder,
			MethodSpec.Builder methodBuilder, Set fieldList, boolean mapFields) {
		SQLiteDaoDefinition daoDefinition = method.getParent();
		SQLiteEntity entity = daoDefinition.getEntity();

		// List fields = fieldList.value1;

		// TypeName collectionClass;
		TypeName entityClass = typeName(entity.getElement());

		methodBuilder.addCode("\n");
		methodBuilder.addCode("$T resultBean=null;\n", entityClass);
		// immutable management
		if (entity.isImmutablePojo()) {
			methodBuilder.addCode("\n");
			methodBuilder.addComment("initialize temporary variable for immutable POJO");
			ImmutableUtility.generateImmutableVariableInit(entity, methodBuilder);
		}

		methodBuilder.addCode("\n");

		methodBuilder.beginControlFlow("if (_cursor.moveToFirst())");

		// generate index from columns
		methodBuilder.addCode("\n");
		{
			int i = 0;
			for (JQLProjection a : fieldList) {
				SQLProperty item = a.property;
				methodBuilder.addStatement("int index$L=_cursor.getColumnIndex($S)", (i++), item.columnName);
				if (item.hasTypeAdapter()) {
					methodBuilder.addStatement("$T $LAdapter=$T.getAdapter($T.class)",
							item.typeAdapter.getAdapterTypeName(), item.getName(), SQLTypeAdapterUtils.class,
							item.typeAdapter.getAdapterTypeName());
				}
			}
		}
		methodBuilder.addCode("\n");

		// immutable management
		if (entity.isImmutablePojo()) {
			methodBuilder.addComment("reset temporary variable for immutable POJO");
			ImmutableUtility.generateImmutableVariableReset(entity, methodBuilder);
		} else {
			methodBuilder.addCode("resultBean=new $T();\n\n", entityClass);
		}

		// generate mapping
		int i = 0;
		for (JQLProjection a : fieldList) {
			SQLProperty item = a.property;
			if (item.isNullable()) {
				methodBuilder.addCode("if (!_cursor.isNull(index$L)) { ", i);
			}
			SQLTransformer.cursor2Java(methodBuilder, entityClass, item, "resultBean", "_cursor", "index" + i + "");
			methodBuilder.addCode(";");
			if (item.isNullable()) {
				methodBuilder.addCode(" }");
			}
			methodBuilder.addCode("\n");

			i++;
		}

		// subqueries are executed after all
		generateSubQueries(methodBuilder, method);

		methodBuilder.addCode("\n");
		
		// immutable management
		if (entity.isImmutablePojo()) {
			methodBuilder.addComment("define immutable POJO");
			ImmutableUtility.generateImmutableEntityCreation(entity, methodBuilder, "resultBean", false);
		}

		methodBuilder.endControlFlow();

		methodBuilder.addCode("return resultBean;\n");
		// close try { open cursor
		methodBuilder.endControlFlow();

	}

}