Package opendap.servers

Class ValueClause

  • All Implemented Interfaces:
    Clause, SubClause
    public class ValueClause
extends AbstractClause
implements SubClause
    Represents a clause containing a simple value. If the value is an constant value such as "2.0", the clause's isConstant() method will return true; if it is a variable of the dataset, isConstant() will return false.
    See Also:
    ClauseFactory

    • Field Detail

      • value

        protected opendap.dap.BaseType value

      • parent

        protected Clause parent

    • Constructor Detail

      • ValueClause

        protected ValueClause​(opendap.dap.BaseType value,
                      boolean constant)
        Creates a new ValueClause.
        Parameters:
        value - The BaseType represented by this clause. This can be either a BaseType taken from the DDS of a dataset, or a BaseType object created to hold a constant value.
        constant - Should be set to false if the value parameter is from the DDS of a dataset, and true if the value parameter is a constant value.

    • Method Detail

      • getValue

        public opendap.dap.BaseType getValue()
        Returns the BaseType represented by this clause.
        Specified by:
        getValue in interface SubClause

      • evaluate

        public opendap.dap.BaseType evaluate()
        Returns the BaseType represented by this clause. Equivalent to getValue(), except that calling this method flags this clause as "defined".
        Specified by:
        evaluate in interface SubClause
        Throws:
        DAP2ServerSideException - Not thrown by this type of clause.

      • getParent

        public Clause getParent()
        Description copied from interface: SubClause
        Returns the Clause which contains this subclause. The clause returned may be a TopLevelClause or another SubClause.
        Specified by:
        getParent in interface SubClause

      • setParent

        public void setParent​(Clause parent)
        Description copied from interface: SubClause
        Sets the parent of this subclause. Used during parsing.
        Specified by:
        setParent in interface SubClause

      • printConstraint

        public void printConstraint​(PrintWriter os)
        Prints the original string representation of this clause. For use in debugging.
        Specified by:
        printConstraint in interface Clause