org.hibernate.sql.results.internal.instantiation.DynamicInstantiationListAssemblerImpl Maven / Gradle / Ivy

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Hibernate's core ORM functionality

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later
 * See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
 */
package org.hibernate.sql.results.internal.instantiation;

import java.util.ArrayList;
import java.util.List;

import org.hibernate.sql.results.spi.JdbcValuesSourceProcessingOptions;
import org.hibernate.sql.results.spi.DomainResultAssembler;
import org.hibernate.sql.results.spi.RowProcessingState;
import org.hibernate.type.descriptor.java.spi.BasicJavaDescriptor;
import org.hibernate.type.descriptor.java.spi.JavaTypeDescriptor;

import org.jboss.logging.Logger;

/**
 * A QueryResultAssembler implementation representing handling for dynamic-
 * instantiations targeting a List (per-"row"),
 *
 * E.g.`select new list( pers.name, pers.dateOfBirth ) ...`
 *
 * @author Steve Ebersole
 */
public class DynamicInstantiationListAssemblerImpl implements DomainResultAssembler {
	private static final Logger log = Logger.getLogger( DynamicInstantiationListAssemblerImpl.class );

	private final BasicJavaDescriptor listJavaDescriptor;
	private final List argumentReaders;

	public DynamicInstantiationListAssemblerImpl(
			BasicJavaDescriptor listJavaDescriptor,
			List argumentReaders) {
		this.listJavaDescriptor = listJavaDescriptor;
		this.argumentReaders = argumentReaders;
	}

	@Override
	public JavaTypeDescriptor getJavaTypeDescriptor() {
		return listJavaDescriptor;
	}

	@Override
	public Object assemble(
			RowProcessingState rowProcessingState,
			JdbcValuesSourceProcessingOptions options) {
		final ArrayList