org.eclipse.jnosql.mapping.reflection.DefaultCollectionParameterMetaData Maven / Gradle / Ivy

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/*
 *  Copyright (c) 2023 Contributors to the Eclipse Foundation
 *   All rights reserved. This program and the accompanying materials
 *   are made available under the terms of the Eclipse Public License v1.0
 *   and Apache License v2.0 which accompanies this distribution.
 *   The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 *   and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
 *
 *   You may elect to redistribute this code under either of these licenses.
 *
 *   Contributors:
 *
 *   Otavio Santana
 */
package org.eclipse.jnosql.mapping.reflection;

import org.eclipse.jnosql.communication.TypeSupplier;
import jakarta.nosql.AttributeConverter;
import org.eclipse.jnosql.mapping.metadata.CollectionSupplier;
import org.eclipse.jnosql.mapping.metadata.CollectionParameterMetaData;
import org.eclipse.jnosql.mapping.metadata.MappingType;

import java.lang.reflect.ParameterizedType;
import java.util.Collection;
import java.util.ServiceLoader;

class DefaultCollectionParameterMetaData extends DefaultParameterMetaData implements CollectionParameterMetaData {


    private final TypeSupplier typeSupplier;

    DefaultCollectionParameterMetaData(String name, Class type, boolean id,
                                       Class> converter,
                                       MappingType mappingType, TypeSupplier typeSupplier) {
        super(name, type, id, converter, mappingType);
        this.typeSupplier = typeSupplier;
    }

    @Override
    public Class elementType() {
        return (Class) ((ParameterizedType) typeSupplier.get()).getActualTypeArguments()[0];
    }

    @Override
    public Collection collectionInstance() {
        Class type =  type();
        final CollectionSupplier supplier = ServiceLoader.load(CollectionSupplier.class)
                .stream()
                .map(ServiceLoader.Provider::get)
                .map(CollectionSupplier.class::cast)
                .filter(c -> c.test(type))
                .findFirst()
                .orElseThrow(() -> new UnsupportedOperationException("This collection is not supported yet: " + type));
        return (Collection) supplier.get();
    }

}