org.fabric3.datasource.runtime.DataSourceWireAttacher Maven / Gradle / Ivy

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/*
 * Fabric3
 * Copyright (c) 2009-2015 Metaform Systems
 *
 * 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.
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 */
package org.fabric3.datasource.runtime;

import javax.sql.DataSource;

import org.fabric3.spi.container.ContainerException;
import org.oasisopen.sca.annotation.Reference;

import org.fabric3.datasource.provision.DataSourceWireTargetDefinition;
import org.fabric3.datasource.spi.DataSourceRegistry;
import org.fabric3.spi.container.builder.component.TargetWireAttacher;
import org.fabric3.spi.model.physical.PhysicalWireSourceDefinition;
import org.fabric3.spi.container.objectfactory.ObjectFactory;
import org.fabric3.spi.container.objectfactory.SingletonObjectFactory;
import org.fabric3.spi.container.wire.Wire;

/**
 * Attaches to a runtime DataSource.
 */
public class DataSourceWireAttacher implements TargetWireAttacher {
    private DataSourceRegistry registry;

    public DataSourceWireAttacher(@Reference DataSourceRegistry registry) {
        this.registry = registry;
    }

    public void attach(PhysicalWireSourceDefinition source, DataSourceWireTargetDefinition target, Wire wire) throws ContainerException {
        throw new AssertionError();
    }

    public void detach(PhysicalWireSourceDefinition source, DataSourceWireTargetDefinition target) throws ContainerException {
        throw new AssertionError();
    }

    public ObjectFactory createObjectFactory(DataSourceWireTargetDefinition target) throws ContainerException {
        String dataSourceName = target.getDataSourceName();
        DataSource source = registry.getDataSource(dataSourceName);
        if (!target.isOptional() && source == null) {
            throw new DataSourceNotFoundException("DataSource not found: " + dataSourceName);
        }
        return new SingletonObjectFactory<>(source);
    }
}