Package cascading.lingual.catalog.target

Source Code of cascading.lingual.catalog.target.DDLTarget

/*
* Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* 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 cascading.lingual.catalog.target;

import java.io.File;
import java.io.IOException;
import java.util.List;

import cascading.lingual.catalog.CatalogOptions;
import cascading.lingual.catalog.SchemaCatalog;
import cascading.lingual.catalog.SchemaCatalogManager;
import cascading.lingual.catalog.ddl.DDLParser;
import cascading.lingual.catalog.ddl.DDLTable;
import cascading.lingual.common.Printer;
import cascading.lingual.common.Target;
import cascading.lingual.platform.PlatformBroker;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
*
*/
public class DDLTarget extends Target
  {
  private static final Logger LOG = LoggerFactory.getLogger( DDLTarget.class );

  public DDLTarget( Printer printer, CatalogOptions options )
    {
    super( printer, options );
    }

  @Override
  public boolean handle( PlatformBroker platformBroker )
    {
    SchemaCatalog catalog = platformBroker.getSchemeCatalog();
    String schemaName = getOptions().getSchemaName();
    String protocolName = getOptions().getProtocolName();
    String formatName = getOptions().getFormatName();

    getSchemaDefChecked( catalog, schemaName, true );

    LOG.info( "loading ddl from: {}", getOptions().getDDL() );

    SchemaCatalogManager catalogManager = platformBroker.getCatalogManager();

    DDLParser parser = new DDLParser( catalogManager, schemaName, protocolName, formatName );

    try
      {
      List<DDLTable> commands = parser.parse( new File( getOptions().getDDL() ) );

      LOG.info( "found {} commands", commands.size() );

      parser.execute( commands );
      }
    catch( IOException exception )
      {
      throw new IllegalArgumentException( "unable to read file: " + getOptions().getDDL(), exception );
      }

    return true;
    }
  }
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