text: /*
   * 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.
   *
   * Other licenses:
   * -----------------------------------------------------------------------------
   * Commercial licenses for this work are available. These replace the above
   * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
   * database integrations.
   *
   * For more information, please visit: http://www.jooq.org/licenses
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   *
   */
  package org.jooq.impl;
  
  import static org.jooq.SQLDialect.DEFAULT;
  import static org.jooq.tools.StringUtils.defaultIfNull;
  
  import org.jooq.Configuration;
  import org.jooq.Meta;
  import org.jooq.MetaProvider;
  import org.jooq.SQLDialect;
  import org.jooq.Source;
  
  
  /**
   * A {@link MetaProvider} implementation that can handle different types of
   * {@link Source} content.
   *
   * @author Lukas Eder
   */
  final class SourceMetaProvider implements MetaProvider {
  
      private final Configuration configuration;
      private final Source[]      sources;
  
      SourceMetaProvider(Configuration configuration, Source... sources) {
          this.configuration = configuration;
          this.sources = sources;
      }
  
      @Override
      public final Meta provide() {
          if (sources.length > 0) {
              String s = sources[0].readString();
              sources[0] = Source.of(s);
  
              // TODO: Implement more thorough and reusable "isXML()" check in MiniJAXB
              if (s.startsWith("<?xml") || s.startsWith("<information_schema") || s.startsWith("<!--"))
                  return new InformationSchemaMetaProvider(configuration, sources).provide();
          }
  
          SQLDialect dialect = configuration.settings().getInterpreterDialect();
          switch (defaultIfNull(dialect, DEFAULT).family()) {
              case DEFAULT:
                  return new InterpreterMetaProvider(configuration, sources).provide();
  
              case DERBY:
              case H2:
              case HSQLDB:
              case SQLITE:
                  return new TranslatingMetaProvider(configuration, sources).provide();
  
              default:
                  throw new UnsupportedOperationException("Interpreter dialect not yet supported: " + dialect);
          }
      }
  }
  