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  package org.apache.cayenne.dba.hsqldb;
  
  import org.apache.cayenne.access.types.ExtendedType;
  import org.apache.cayenne.access.types.ExtendedTypeFactory;
  import org.apache.cayenne.access.types.ValueObjectTypeRegistry;
  import org.apache.cayenne.configuration.Constants;
  import org.apache.cayenne.configuration.RuntimeProperties;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.resource.ResourceLocator;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * A flavor of HSQLDBAdapter that implements workarounds for some old driver limitations.
   * 
   * @since 1.2
   */
  public class HSQLDBNoSchemaAdapter extends HSQLDBAdapter {
      
      public HSQLDBNoSchemaAdapter(@Inject RuntimeProperties runtimeProperties,
              @Inject(Constants.DEFAULT_TYPES_LIST) List<ExtendedType> defaultExtendedTypes,
              @Inject(Constants.USER_TYPES_LIST) List<ExtendedType> userExtendedTypes,
              @Inject(Constants.TYPE_FACTORIES_LIST) List<ExtendedTypeFactory> extendedTypeFactories,
              @Inject(Constants.RESOURCE_LOCATOR) ResourceLocator resourceLocator,
              @Inject ValueObjectTypeRegistry valueObjectTypeRegistry) {
          super(runtimeProperties, defaultExtendedTypes, userExtendedTypes, extendedTypeFactories, resourceLocator, valueObjectTypeRegistry);
      }
  
      /**
       * Generate unqualified name without schema.
       * 
       * @since 1.2
       */
      @Override
      protected String getTableName(DbEntity entity) {
          return quotingStrategy.quotedIdentifier(entity, entity.getName());
      }
  
      /**
       * Returns NULL.
       * 
       * @since 1.2
       */
      @Override
      protected String getSchemaName(DbEntity entity) {
          return null;
      }
   
      @Override
      public Collection<String> dropTableStatements(DbEntity table) {
          // hsqldb doesn't support schema namespaces, so remove if found
          return Collections.singleton("DROP TABLE " + getTableName(table));
      }
  
      /**
       * Uses unqualified entity names.
       * 
       * @since 1.2
       */
      @Override
      public String createTable(DbEntity ent) {
          String sql = super.createTable(ent);
  
          // hsqldb doesn't support schema namespaces, so remove if found
          String fqnCreate = "CREATE CACHED TABLE " + super.getTableName(ent) + " (";
          if (sql != null && sql.toUpperCase().startsWith(fqnCreate)) {
              sql = "CREATE CACHED TABLE "
                      + getTableName(ent)
                      + " ("
                      + sql.substring(fqnCreate.length());
          }
  
          return sql;
      }
  }
  