/*
    * (c) Copyright 2006-2020 by rapiddweller GmbH & Volker Bergmann. All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, is permitted under the terms of the
    * GNU General Public License.
    *
    * For redistributing this software or a derivative work under a license other
    * than the GPL-compatible Free Software License as defined by the Free
   * Software Foundation or approved by OSI, you must first obtain a commercial
   * license to this software product from rapiddweller GmbH & Volker Bergmann.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
   * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
   * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  package com.rapiddweller.benerator.engine.parser.xml;
  
  import com.rapiddweller.benerator.engine.BeneratorRootStatement;
  import com.rapiddweller.benerator.engine.Statement;
  import com.rapiddweller.benerator.engine.statement.IfStatement;
  import com.rapiddweller.benerator.engine.statement.TranscodingTaskStatement;
  import com.rapiddweller.benerator.engine.statement.WhileStatement;
  import com.rapiddweller.common.CollectionUtil;
  import com.rapiddweller.common.ErrorHandler;
  import com.rapiddweller.platform.db.DBSystem;
  import com.rapiddweller.script.Expression;
  import org.w3c.dom.Element;
  
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_DEFAULT_SOURCE;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_IDENTITY;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_ON_ERROR;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_PAGESIZE;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_TARGET;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.EL_TRANSCODING_TASK;
  import static com.rapiddweller.benerator.engine.parser.xml.DescriptorParserUtil.parseScriptAttribute;
  import static com.rapiddweller.benerator.engine.parser.xml.DescriptorParserUtil.parseScriptableStringAttribute;
  
  /**
   * Parses Benerator's &lt;transcode&gt; XML descriptor element.<br/><br/>
   * Created: 10.09.2010 18:14:53
   *
   * @author Volker Bergmann
   * @since 0.6.4
   */
  public class TranscodingTaskParser extends AbstractTranscodeParser {
  
    /**
     * Instantiates a new Transcoding task parser.
     */
    public TranscodingTaskParser() {
      super(EL_TRANSCODING_TASK,
          CollectionUtil.toSet(ATT_TARGET),
          CollectionUtil.toSet(ATT_IDENTITY, ATT_DEFAULT_SOURCE, ATT_PAGESIZE, ATT_ON_ERROR),
          BeneratorRootStatement.class, IfStatement.class, WhileStatement.class);
    }
  
    @Override
    public Statementcom/rapiddweller/benerator/engine/Statement.html#Statement">Statement doParse(Element element, Statement[] parentPath, BeneratorParseContext parsingContext) {
      Expression<ErrorHandler> errorHandlerExpression = parseOnErrorAttribute(element, "transcodingTask");
      TranscodingTaskStatement/TranscodingTaskStatement.html#TranscodingTaskStatement">TranscodingTaskStatement statement = new TranscodingTaskStatement(
          parseDefaultSource(element),
          parseTarget(element),
          parseIdentity(element),
          parsePageSize(element),
          errorHandlerExpression);
      Statement[] subPath = parsingContext.createSubPath(parentPath, statement);
      statement.setSubStatements(parsingContext.parseChildElementsOf(element, subPath));
      return statement;
    }
  
    private static Expression<String> parseIdentity(Element element) {
      return parseScriptableStringAttribute("identity", element);
    }
  
    /**
     * Parse default source expression.
     *
     * @param element the element
     * @return the expression
     */
    @SuppressWarnings("unchecked")
    protected Expression<DBSystem> parseDefaultSource(Element element) {
      return (Expression<DBSystem>) parseScriptAttribute("defaultSource", element);
    }
  
  }