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  package org.apache.cayenne.access.translator.select;
  
  import java.util.Map;
  
  import org.apache.cayenne.access.jdbc.ColumnDescriptor;
  import org.apache.cayenne.access.translator.DbAttributeBinding;
  import org.apache.cayenne.map.ObjAttribute;
  import org.apache.cayenne.query.ObjectSelect;
  
  /**
   * An abstraction of {@link ObjectSelect} translator.
   * 
   * @since 4.0 this is an interface.
   */
  public interface SelectTranslator {
  
  	String getSql() throws Exception;
  
  	DbAttributeBinding[] getBindings();
  
  	Map<ObjAttribute, ColumnDescriptor> getAttributeOverrides();
  
  	ColumnDescriptor[] getResultColumns();
  
  	boolean isSuppressingDistinct();
  
  	/**
  	 * @since 4.0
  	 * @return do query has at least one join
  	 */
  	boolean hasJoins();
  }
  