Class ConditionImpl

  • All Implemented Interfaces:
    java.io.Serializable

    public class ConditionImpl
    extends java.lang.Object
    implements java.io.Serializable
    An utility to simplify the implementation of Condition. Note: it doesn't implement Condition.
    Author:
    tomyeh
    See Also:
    Serialized Form
    • Constructor Summary

      Constructors 
      Constructor Description
      ConditionImpl​(java.lang.String ifc, java.lang.String unless)
      Construct.
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      ExValue getIf()
      Returns If expression.
      static ConditionImpl getInstance​(java.lang.String ifc, java.lang.String unless)
      Returns an instance of Condition, or null if both ifc and unless are empty.
      ExValue getUnless()
      Returns Unless expression.
      boolean isEffective​(Evaluator eval, Component comp)
      Used to evaluate whether it is effective.
      boolean isEffective​(Evaluator eval, Page page)
      Used to evaluate whether it is effective.
      boolean isIf()
      Returns whether it's If condition.
      boolean isUnless()
      Returns whether it's Unless condition.
      void setIf​(java.lang.String cond)
      Sets the if condition.
      void setUnless​(java.lang.String cond)
      Sets the unless condition.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Method Detail

      • getInstance

        public static ConditionImpl getInstance​(java.lang.String ifc,
                                                java.lang.String unless)
        Returns an instance of Condition, or null if both ifc and unless are empty. In other words, it is useful if you use null or empty to denote true.
      • isEffective

        public boolean isEffective​(Evaluator eval,
                                   Component comp)
        Used to evaluate whether it is effective.
        Parameters:
        eval - the evaluator to evaluate this condition
        comp - used as the self variable. Ignored if null.
        Since:
        3.0.0
      • isEffective

        public boolean isEffective​(Evaluator eval,
                                   Page page)
        Used to evaluate whether it is effective.
        Parameters:
        eval - the evaluator to evaluate this condition
        page - used as the self variable. Ignored if null.
        Since:
        3.0.0
      • isIf

        public boolean isIf()
        Returns whether it's If condition.
        Since:
        10.0.0
      • getIf

        public ExValue getIf()
        Returns If expression.
        Since:
        10.0.0
      • getUnless

        public ExValue getUnless()
        Returns Unless expression.
        Since:
        10.0.0
      • isUnless

        public boolean isUnless()
        Returns whether it's Unless condition.
        Since:
        10.0.0