org.apache.polygene.api.query.Query类的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.apache.polygene.api.query.Query类的一些代码示例，展示了Query类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query类的具体详情如下：
包路径：org.apache.polygene.api.query.Query
类名称：Query

Query介绍

[英]This represents a Query in an indexing system. It is created from a QueryBuilder, which decides the "where" clause in the query.

Additional limitations, such as paging, ordering, and variables, can be set on a Query before it is executed by calling one of find(), iterator(), or count().

DDD tip: typically Queries are created in the Domain Model and passed to the UI, which sets the order and paging before executing it.
[中]这表示索引系统中的查询。它是从QueryBuilder创建的，QueryBuilder决定查询中的“where”子句。
在执行查询之前，可以通过调用find（）、iterator（）或count（）中的一个来设置其他限制，例如分页、排序和变量。
DDD提示：查询通常在域模型中创建，并传递给UI，UI在执行查询之前设置顺序和分页。

代码示例

代码示例来源：origin: apache/attic-polygene-java

@Test
public void script24()
{
  final QueryBuilder<Domain> qb = this.moduleInstance.newQueryBuilder( Domain.class );
  final Nameable nameable = templateFor( Nameable.class );
  final Query<Domain> query = unitOfWork.newQuery( qb.where( eq( nameable.name(), "Gaming" ) ) );
  System.out.println( "*** script24: " + query );
  assertThat( query.find().name().get(), is( equalTo( "Gaming" ) ) );
}

代码示例来源：origin: apache/attic-polygene-java

@Override
  public void expect()
    throws Exception
  {
    assertThat( query.count(), equalTo(1) );
    Male male = query.find();
    assertThat( male.title().get(), equalTo( Person.Title.MR ));
  }
}

代码示例来源：origin: org.apache.polygene.core/org.apache.polygene.core.testsupport

@Test
public void script20()
{
  Person person = templateFor( Person.class );
  final Query<Person> query = unitOfWork.newQuery( this.moduleInstance
    .newQueryBuilder( Person.class )
    .where( queries.get( "script20" ) ) );
  query.orderBy( orderBy( person.name(), OrderBy.Order.DESCENDING ) );
  System.out.println( "*** script20: " + query );
  verifyOrderedResults( query, "Joe Doe", "Ann Doe" );
}

代码示例来源：origin: org.apache.polygene.core/org.apache.polygene.core.testsupport

@Test
public void script17()
{
  QueryBuilder<Nameable> qb = this.moduleInstance.newQueryBuilder( Nameable.class );
  // should return only 3 entities starting with forth one
  Nameable nameable = templateFor( Nameable.class );
  Query<Nameable> query = unitOfWork.newQuery( qb );
  query.orderBy( orderBy( nameable.name() ) );
  query.firstResult( 3 );
  query.maxResults( 2 );
  System.out.println( "*** script17: " + query );
  verifyOrderedResults( query, "Felix", "Gaming" );
}

代码示例来源：origin: org.apache.polygene.core/org.apache.polygene.core.testsupport

@Test
  public void script24()
  {
    final Query<Domain> query = unitOfWork.newQuery( this.moduleInstance
      .newQueryBuilder( Domain.class )
      .where( queries.get( "script24" ) ) );
    query.setVariable( "domain", "Gaming" );
    System.out.println( "*** script24: " + query );
    assertThat( query.find().name().get(), is( equalTo( "Gaming" ) ) );
  }
}

代码示例来源：origin: org.apache.polygene.core/org.apache.polygene.core.testsupport

@Test
public void script16()
{
  QueryBuilder<Nameable> qb = this.moduleInstance.newQueryBuilder( Nameable.class );
  // should return only 2 entities
  Nameable nameable = templateFor( Nameable.class );
  Query<Nameable> query = unitOfWork.newQuery( qb );
  query.orderBy( orderBy( nameable.name() ) );
  query.maxResults( 2 );
  System.out.println( "*** script16: " + query );
  verifyOrderedResults( query, "Ann Doe", "Cars" );
}

代码示例来源：origin: apache/attic-polygene-java

query.orderBy( orderBy( template.methodName() ) );
Iterator<TraceRecord> result = query.iterator();
assertTrue( result.hasNext() );
TraceRecord rec1 = result.next();

代码示例来源：origin: apache/attic-polygene-java

Query<MyEntity> q = uow.newQuery( qBuilder );
assertEquals( 1, q.count() );
assertEquals( TEST_NAME, q.iterator().next().name().get() );

代码示例来源：origin: apache/attic-polygene-java

private void doRemove( int howMany )
{
  Iterator<ExampleEntity> iter = this.unitOfWorkFactory.currentUnitOfWork().newQuery( this.queryBuilderFactory.newQueryBuilder( ExampleEntity.class )).maxResults( howMany ).iterator();
  Integer removed = 0;
  while (iter.hasNext())
  {
    this.unitOfWorkFactory.currentUnitOfWork().remove( iter.next() );
    ++removed;
  }
  if (removed != howMany)
  {
    LOG.warn( "Removed " + removed + " entities instead of " + howMany + "." );
  }
}

代码示例来源：origin: apache/attic-polygene-java

private void verifyOrder( Query<TestComposite> query, String expected )
{
  String actual = "";
  for( TestComposite testComposite : query )
  {
    actual = actual + testComposite.b().get();
  }
  assertThat( "Query is correct", actual, equalTo( expected ) );
  assertThat( "Count is correct", query.count(), equalTo( (long) expected.length() ) );
}

代码示例来源：origin: apache/attic-polygene-java

private List<ExampleEntity> doList( int howMany )
{
  List<ExampleEntity> list = new ArrayList<ExampleEntity>();
  UnitOfWork uow = this.unitOfWorkFactory.newUnitOfWork();
  Iterator<ExampleEntity> iter = uow.newQuery( this.queryBuilderFactory.newQueryBuilder( ExampleEntity.class ) ).iterator();
  int found = 0;
  while (iter.hasNext())
  {
    found++;
    ExampleEntity exampleEntity = iter.next();
    if (exampleEntity != null)
      list.add( exampleEntity );
  }
  uow.discard();
  if (found != howMany)
  {
    LOG.warn( "Found " + found + " entities instead of " + howMany + "." );
  }
  return list;
}

代码示例来源：origin: apache/attic-polygene-java

@Test
public void givenPlainQueryWhenMaxedResultExpectLimitedResult()
{
  Query<TestComposite> query = queryBuilderFactory.newQueryBuilder( TestComposite.class ).newQuery( composites );
  query.maxResults( 5 );
  verifyOrder( query, "62345" );
}

代码示例来源：origin: apache/attic-polygene-java

@Test
public void givenPlainQueryWhenFirstResultIsBeyondFirstElementExpectLimitedResult()
{
  Query<TestComposite> query = queryBuilderFactory.newQueryBuilder( TestComposite.class ).newQuery( composites );
  query.firstResult( 2 );
  verifyOrder( query, "3451" );
}

代码示例来源：origin: apache/attic-polygene-java

@Test
public void script17()
{
  QueryBuilder<Nameable> qb = this.moduleInstance.newQueryBuilder( Nameable.class );
  // should return only 3 entities starting with forth one
  Nameable nameable = templateFor( Nameable.class );
  Query<Nameable> query = unitOfWork.newQuery( qb );
  query.orderBy( orderBy( nameable.name() ) );
  query.firstResult( 3 );
  query.maxResults( 2 );
  System.out.println( "*** script17: " + query );
  verifyOrderedResults( query, "Felix", "Gaming" );
}

代码示例来源：origin: apache/attic-polygene-java

@Test
public void script16()
{
  QueryBuilder<Nameable> qb = this.moduleInstance.newQueryBuilder( Nameable.class );
  // should return only 2 entities
  Nameable nameable = templateFor( Nameable.class );
  Query<Nameable> query = unitOfWork.newQuery( qb );
  query.orderBy( orderBy( nameable.name() ) );
  query.maxResults( 2 );
  System.out.println( "*** script16: " + query );
  verifyOrderedResults( query, "Ann Doe", "Cars" );
}

代码示例来源：origin: apache/attic-polygene-java

@Test
  public void script24()
  {
    final Query<Domain> query = unitOfWork.newQuery( this.moduleInstance
      .newQueryBuilder( Domain.class )
      .where( queries.get( "script24" ) ) );
    query.setVariable( "domain", "Gaming" );
    System.out.println( "*** script24: " + query );
    assertThat( query.find().name().get(), is( equalTo( "Gaming" ) ) );
  }
}

代码示例来源：origin: apache/attic-polygene-java

query.orderBy( orderBy( template.manufacturer() ), orderBy( template.model() ) );
Iterator<Car> cars = query.iterator();
Assert.assertTrue( cars.hasNext() );
Car car1 = cars.next();

代码示例来源：origin: apache/attic-polygene-java

Query<ExampleEntity> query = uow.newQuery( this.queryBuilderFactory.newQueryBuilder( ExampleEntity.class ).
    where( QueryExpressions.contains( QueryExpressions.templateFor( ExampleEntity.class ).manyAssoc(), entity50) ));
System.out.println(query.count());

代码示例来源：origin: apache/attic-polygene-java

@Test
  public void whenTraceOnMixinTypeMethodExpectOneEntryInEntityStore()
    throws Exception
  {
    SomeService sc = serviceFinder.findService( SomeService.class ).get();
    assertEquals( 123, sc.doSomethingImportant() );
    assertEquals( 456, sc.doSomethingLessImportant() );
    UnitOfWork uow = unitOfWorkFactory.newUnitOfWork();
    QueryBuilder<TraceRecord> builder = queryBuilderFactory.newQueryBuilder( TraceRecord.class );
    Query<TraceRecord> query = uow.newQuery( builder );
    // IS sorting needed??
//        TraceRecord template = templateFor( TraceRecord.class );
//        query.orderBy( orderBy( template.methodName() ) );
    Iterator<TraceRecord> result = query.iterator();
    assertTrue( result.hasNext() );
    TraceRecord rec1 = result.next();
    assertEquals( "doSomethingImportant", rec1.methodName().get() );
    assertFalse( result.hasNext() );
    uow.complete();
  }

代码示例来源：origin: org.apache.polygene.core/org.apache.polygene.core.testsupport

@Test
public void script24()
{
  final QueryBuilder<Domain> qb = this.moduleInstance.newQueryBuilder( Domain.class );
  final Nameable nameable = templateFor( Nameable.class );
  final Query<Domain> query = unitOfWork.newQuery( qb.where( eq( nameable.name(), "Gaming" ) ) );
  System.out.println( "*** script24: " + query );
  assertThat( query.find().name().get(), is( equalTo( "Gaming" ) ) );
}

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