AbstractSQLEntityStoreAssembler.java

/*
 * Copyright (c) 2010, Stanislav Muhametsin. All Rights Reserved.
 * Copyright (c) 2010, Paul Merlin. All Rights Reserved.
 *
 * 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.
 *
 */
package org.qi4j.entitystore.sql.assembly;

import java.io.IOException;

import org.qi4j.api.common.Visibility;
import org.qi4j.bootstrap.AssemblyException;
import org.qi4j.bootstrap.ModuleAssembly;
import org.qi4j.entitystore.sql.SQLEntityStoreService;
import org.qi4j.entitystore.sql.internal.DatabaseSQLService.DatabaseSQLServiceComposite;
import org.qi4j.entitystore.sql.internal.DatabaseSQLServiceCoreMixin;
import org.qi4j.entitystore.sql.internal.DatabaseSQLServiceSpi;
import org.qi4j.entitystore.sql.internal.DatabaseSQLServiceStatementsMixin;
import org.qi4j.entitystore.sql.internal.DatabaseSQLStringsBuilder;
import org.qi4j.library.sql.common.AbstractSQLAssembler;
import org.qi4j.library.sql.ds.assembly.DataSourceAssembler;
import org.qi4j.spi.uuid.UuidIdentityGeneratorService;
import org.sql.generation.api.vendor.SQLVendor;
import org.sql.generation.api.vendor.SQLVendorProvider;

abstract class AbstractSQLEntityStoreAssembler extends AbstractSQLAssembler
{

    private static final Visibility DEFAULT_VISIBILITY = Visibility.module;

    public AbstractSQLEntityStoreAssembler()
    {
        this( DEFAULT_VISIBILITY, new DataSourceAssembler() );
    }

    public AbstractSQLEntityStoreAssembler( Visibility visibility )
    {
        this( visibility, new DataSourceAssembler() );
    }

    public AbstractSQLEntityStoreAssembler( DataSourceAssembler assembler )
    {
        this( DEFAULT_VISIBILITY, assembler );
    }

    public AbstractSQLEntityStoreAssembler( Visibility visibility, DataSourceAssembler assembler )
    {
        super( visibility, assembler );
    }

    protected abstract String getEntityStoreServiceName();

    protected abstract Class<?> getDatabaseSQLServiceSpecializationMixin();

    protected Class<?> getDatabaseStringBuilderMixin()
    {
        return DatabaseSQLStringsBuilder.CommonMixin.class;
    }

    protected SQLVendor getSQLVendor()
        throws IOException
    {
        return SQLVendorProvider.createVendor( SQLVendor.class );
    }

    @SuppressWarnings("unchecked")
    public final void doAssemble( ModuleAssembly module )
        throws AssemblyException
    {

        module.services( SQLEntityStoreService.class ).visibleIn( this.getVisibility() );

        try
        {
            SQLVendor sqlVendor = this.getSQLVendor();
            if( sqlVendor == null )
            {
                throw new AssemblyException("SQL Vendor could not be determined." );
            }
            module
                .services( DatabaseSQLServiceComposite.class )
                .withMixins( DatabaseSQLServiceCoreMixin.class, DatabaseSQLServiceSpi.CommonMixin.class,
                             getDatabaseStringBuilderMixin(), DatabaseSQLServiceStatementsMixin.class,
                             getDatabaseSQLServiceSpecializationMixin() ).identifiedBy( getEntityStoreServiceName() )
                .visibleIn( Visibility.module ).setMetaInfo( sqlVendor );
        }
        catch( IOException ioe )
        {
            throw new AssemblyException( ioe );
        }
        module.services( UuidIdentityGeneratorService.class ).visibleIn( this.getVisibility() );
    }

}