Package org.basex.query.func.db

Class DbOpen

java.lang.Object
org.basex.query.expr.ExprInfo
org.basex.query.expr.Expr
org.basex.query.expr.ParseExpr
org.basex.query.expr.Arr
org.basex.query.func.StandardFunc
org.basex.query.func.db.DbOpen
public final class DbOpen extends StandardFunc
Function implementation.
Author:
BaseX Team 2005-21, BSD License, Christian Gruen

  • Constructor Details

    • DbOpen

      public DbOpen()

  • Method Details

    • value

      public Value value(QueryContext qc) throws QueryException
      Description copied from class: Expr
      Evaluates the expression and returns the resulting value. If this method is not implemented, Expr.item(QueryContext, InputInfo) must be implemented instead.
      Overrides:
      value in class ParseExpr
      Parameters:
      qc - query context
      Returns:
      value
      Throws:
      QueryException - query exception

    • ddo

      public boolean ddo()
      Description copied from class: Expr
      Indicates if this expression returns nodes in document order without duplicates.
      Overrides:
      ddo in class Expr
      Returns:
      result of check

    • opt

      protected Expr opt(CompileContext cc) throws QueryException
      Description copied from class: StandardFunc
      Performs function specific optimizations.
      Overrides:
      opt in class StandardFunc
      Parameters:
      cc - compilation context
      Returns:
      optimized or original expression
      Throws:
      QueryException - query exception

    • accept

      public boolean accept(ASTVisitor visitor)
      Description copied from class: Expr
      Traverses this expression, notifying the visitor of declared and used variables, and checking the tree for other recursive properties.
      Overrides:
      accept in class Arr
      Parameters:
      visitor - visitor
      Returns:
      if the walk should be continued