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  package org.apache.cayenne.access.translator.select;
  
  import org.apache.cayenne.exp.Expression;
  import org.apache.cayenne.exp.path.CayennePath;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.map.DbRelationship;
  import org.apache.cayenne.map.JoinType;
  
  /**
   * @since 4.2
   */
  class TableTreeNode {
  
      // path that spawned this node
      private final CayennePath attributePath;
      private final DbEntity entity;
      private final String tableAlias;
      private final JoinType joinType;
  
      // relationship that connects this node with parent (or null if this is root)
      private final DbRelationship relationship;
  
      private final Expression additionalQualifier;
  
      TableTreeNode(DbEntity entity, String tableAlias) {
          this.attributePath = CayennePath.EMPTY_PATH;
          this.entity = entity;
          this.tableAlias = tableAlias;
          this.relationship = null;
          this.joinType = null;
          this.additionalQualifier = null;
      }
  
      TableTreeNode(CayennePath path, DbRelationship relationship, String tableAlias, JoinType joinType, Expression additionalQualifier) {
          this.attributePath = path;
          this.entity = relationship.getTargetEntity();
          this.tableAlias = tableAlias;
          this.relationship = relationship;
          this.joinType = joinType;
          this.additionalQualifier = additionalQualifier;
      }
  
      public CayennePath getAttributePath() {
          return attributePath;
      }
  
      public DbEntity getEntity() {
          return entity;
      }
  
      public String getTableAlias() {
          return tableAlias;
      }
  
      public JoinType getJoinType() {
          return joinType;
      }
  
      public DbRelationship getRelationship() {
          return relationship;
      }
  
      public Expression getAdditionalQualifier() {
          return additionalQualifier;
      }
  }
  