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  package org.apache.cayenne.dba.hsqldb;
  
  import java.sql.Types;
  
  import org.apache.cayenne.access.translator.ejbql.EJBQLConditionTranslator;
  import org.apache.cayenne.access.translator.ejbql.EJBQLMultiColumnOperand;
  import org.apache.cayenne.access.translator.ejbql.EJBQLPathTranslator;
  import org.apache.cayenne.access.translator.ejbql.EJBQLTranslationContext;
  import org.apache.cayenne.ejbql.EJBQLExpression;
  import org.apache.cayenne.map.ObjAttribute;
  
  /**
   * @since 4.0
   */
  public class HSQLEJBQLConditionTranslator extends EJBQLConditionTranslator {
  
      HSQLEJBQLConditionTranslator(EJBQLTranslationContext context) {
          super(context);
      }
  
      @Override
      public boolean visitPath(EJBQLExpression expression, int finishedChildIndex) {
  
          expression.visit(new EJBQLPathTranslator(context) {
  
              @Override
              protected void appendMultiColumnPath(EJBQLMultiColumnOperand operand) {
                  HSQLEJBQLConditionTranslator.this.addMultiColumnOperand(operand);
              }
  
              @Override
              protected void processTerminatingAttribute(ObjAttribute attribute) {
                  if (attribute.getDbAttribute().getType() == Types.CHAR) {
                      context.append(' ').append(HSQLDBAdapter.TRIM_FUNCTION).append("(");
                      super.processTerminatingAttribute(attribute);
                      context.append(')');
                  }
                  else {
                      super.processTerminatingAttribute(attribute);
                  }
              }
          });
  
          return false;
      }
  }