/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
<<<<<<< Updated upstream
 *
 *     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
=======
 * 
 *     https://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 
>>>>>>> Stashed changes
 * limitations under the License.
 */

package org.apache.jdo.tck.query.result;

import java.math.BigDecimal;
import java.util.Arrays;
import javax.jdo.JDOQLTypedQuery;
import javax.jdo.query.IfThenElseExpression;
import org.apache.jdo.tck.pc.company.CompanyModelReader;
import org.apache.jdo.tck.pc.company.DentalInsurance;
import org.apache.jdo.tck.pc.company.Employee;
import org.apache.jdo.tck.pc.company.Project;
import org.apache.jdo.tck.pc.company.QDentalInsurance;
import org.apache.jdo.tck.pc.company.QProject;
import org.apache.jdo.tck.query.QueryElementHolder;
import org.apache.jdo.tck.query.QueryTest;
import org.apache.jdo.tck.util.BatchTestRunner;

/**
 * <B>Title:</B> IfElseResult. <br>
 * <B>Keywords:</B> query <br>
 * <B>Assertion ID:</B> . <br>
 * <B>Assertion Description: </B>
 */
public class IfElseResult extends QueryTest {

  /** */
  private static final String ASSERTION_FAILED = "Assertion (IfElseResult) failed: ";

  /**
   * The array of invalid queries which may be executed as single string queries and as API queries.
   */
  private static final QueryElementHolder<?>[] INVALID_QUERIES = {
    // Invalid type of condition expression
    new QueryElementHolder<>(
        /*UNIQUE*/ null,
        /*RESULT*/ "IF (this.firstname) 0 ELSE 1",
        /*INTO*/ null,
        /*FROM*/ Employee.class,
        /*EXCLUDE*/ null,
        /*WHERE*/ null,
        /*VARIABLES*/ null,
        /*PARAMETERS*/ null,
        /*IMPORTS*/ null,
        /*GROUP BY*/ null,
        /*ORDER BY*/ null,
        /*FROM*/ null,
        /*TO*/ null),
    // missing ELSE
    new QueryElementHolder<>(
        /*UNIQUE*/ null,
        /*RESULT*/ "IF (this.employee == null) 0",
        /*INTO*/ null,
        /*FROM*/ DentalInsurance.class,
        /*EXCLUDE*/ null,
        /*WHERE*/ null,
        /*VARIABLES*/ null,
        /*PARAMETERS*/ null,
        /*IMPORTS*/ null,
        /*GROUP BY*/ null,
        /*ORDER BY*/ null,
        /*FROM*/ null,
        /*TO*/ null),
    // type of THEN expr must be the same as type of ELSE expr
    new QueryElementHolder<>(
        /*UNIQUE*/ null,
        /*RESULT*/ "IF (this.employee == null) 'Michael' ELSE this.employee",
        /*INTO*/ null,
        /*FROM*/ DentalInsurance.class,
        /*EXCLUDE*/ null,
        /*WHERE*/ null,
        /*VARIABLES*/ null,
        /*PARAMETERS*/ null,
        /*IMPORTS*/ null,
        /*GROUP BY*/ null,
        /*ORDER BY*/ null,
        /*FROM*/ null,
        /*TO*/ null)
  };

  /**
   * The <code>main</code> is called when the class is directly executed from the command line.
   *
   * @param args The arguments passed to the program.
   */
  public static void main(String[] args) {
    BatchTestRunner.run(NullResults.class);
  }

  /** */
  public void testPositive0() {
    Object expected =
        Arrays.asList("emp1Last", "emp2Last", "emp3Last", "emp4Last", "emp5Last", "No employee");

    JDOQLTypedQuery<DentalInsurance> query = getPM().newJDOQLTypedQuery(DentalInsurance.class);
    QDentalInsurance cand = QDentalInsurance.candidate();
    query.result(
        false,
        query.ifThenElse(cand.employee.eq((Employee) null), "No employee", cand.employee.lastname));
    query.orderBy(cand.insid.asc());

    QueryElementHolder<DentalInsurance> holder =
        new QueryElementHolder<>(
            /*UNIQUE*/ null,
            /*RESULT*/ "IF (this.employee == null) 'No employee' ELSE this.employee.lastname",
            /*INTO*/ null,
            /*FROM*/ DentalInsurance.class,
            /*EXCLUDE*/ null,
            /*WHERE*/ null,
            /*VARIABLES*/ null,
            /*PARAMETERS*/ null,
            /*IMPORTS*/ null,
            /*GROUP BY*/ null,
            /*ORDER BY*/ "this.insid ascending",
            /*FROM*/ null,
            /*TO*/ null,
            /*JDOQLTyped*/ query,
            /*paramValues*/ null);

    executeAPIQuery(ASSERTION_FAILED, holder, expected);
    executeSingleStringQuery(ASSERTION_FAILED, holder, expected);
    executeJDOQLTypedQuery(ASSERTION_FAILED, holder, null, true, expected);
  }

  /** */
  @SuppressWarnings("unchecked")
  public void testPositive1() {
    Object expected =
        Arrays.asList(
            new BigDecimal("3000001.188"), new BigDecimal("55000"), new BigDecimal("2201.089"));

    JDOQLTypedQuery<Project> query = getPM().newJDOQLTypedQuery(Project.class);
    QProject cand = QProject.candidate();
    query.result(
        false,
        query.ifThenElse(
            BigDecimal.class,
            cand.members.size().gt(2),
            cand.budget.mul(new BigDecimal("1.2")),
            cand.budget.mul(new BigDecimal("1.1"))));
    query.orderBy(cand.projid.asc());

    QueryElementHolder<Project> holder =
        new QueryElementHolder<>(
            /*UNIQUE*/ null,
            /*RESULT*/ "IF (this.members.size() > 2) this.budget * 1.2 ELSE this.budget * 1.1",
            /*INTO*/ null,
            /*FROM*/ Project.class,
            /*EXCLUDE*/ null,
            /*WHERE*/ null,
            /*VARIABLES*/ null,
            /*PARAMETERS*/ null,
            /*IMPORTS*/ null,
            /*GROUP BY*/ null,
            /*ORDER BY*/ "this.projid ascending",
            /*FROM*/ null,
            /*TO*/ null,
            /*JDOQLTyped*/ query,
            /*paramValues*/ null);

    executeAPIQuery(ASSERTION_FAILED, holder, expected);
    executeSingleStringQuery(ASSERTION_FAILED, holder, expected);
    executeJDOQLTypedQuery(ASSERTION_FAILED, holder, null, true, expected);
  }

  /** */
  @SuppressWarnings("unchecked")
  public void testPositive2() {
    Object expected = Arrays.asList("No reviewer", "Reviewer team", "Single reviewer");

    JDOQLTypedQuery<Project> query = getPM().newJDOQLTypedQuery(Project.class);
    QProject cand = QProject.candidate();
    IfThenElseExpression<String> ifThenElse =
        query
            .ifThen(cand.reviewers.isEmpty(), "No reviewer")
            .ifThen(cand.reviewers.size().eq(1), "Single reviewer")
            .elseEnd("Reviewer team");
    query.result(false, ifThenElse);
    query.orderBy(cand.projid.asc());

    QueryElementHolder<Project> holder =
        new QueryElementHolder<>(
            /*UNIQUE*/ null,
            /*RESULT*/ "IF (this.reviewers.isEmpty()) 'No reviewer' "
                + "ELSE IF (this.reviewers.size() == 1) 'Single reviewer' ELSE 'Reviewer team'",
            /*INTO*/ null,
            /*FROM*/ Project.class,
            /*EXCLUDE*/ null,
            /*WHERE*/ null,
            /*VARIABLES*/ null,
            /*PARAMETERS*/ null,
            /*IMPORTS*/ null,
            /*GROUP BY*/ null,
            /*ORDER BY*/ "this.projid ascending",
            /*FROM*/ null,
            /*TO*/ null,
            /*JDOQLTyped*/ query,
            /*paramValues*/ null);

    executeAPIQuery(ASSERTION_FAILED, holder, expected);
    executeSingleStringQuery(ASSERTION_FAILED, holder, expected);
    executeJDOQLTypedQuery(ASSERTION_FAILED, holder, null, true, expected);
  }

  /** */
  public void testNegative() {
    for (QueryElementHolder<?> invalidQuery : INVALID_QUERIES) {
      compileAPIQuery(ASSERTION_FAILED, invalidQuery, false);
      compileSingleStringQuery(ASSERTION_FAILED, invalidQuery, false);
    }
  }

  /**
   * @see org.apache.jdo.tck.JDO_Test#localSetUp()
   */
  @Override
  protected void localSetUp() {
    addTearDownClass(CompanyModelReader.getTearDownClasses());
    loadAndPersistCompanyModel(getPM());
  }
}