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POJava enum association
 

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    <p>I am trying to create a scenario where by an enum constant in <code>enum class A</code> has associated sub <code>enum class B</code> and <code>enum class C</code> containing their own constants. The constants in <code>enum class B</code> and <code>enum class C</code> group subsets of constants from <code>enum class D</code>. Below is a basically what I am trying to achieve:</p> <pre><code>enum A { CONST_1 ("const_1", B), // B is the associated enum CONST_2 ("const_2", C); // C in the associated enum private final String strVal; private final Enum associatedEnum; private A (String strVal, Enum associatedEnum) { this.strVal = strVal; this.associatedEnum = associatedEnum; } public Enum getAssociatedEnum() { return this.associatedEnum; } public String toString() { return this.strVal; } // Associated Enum contained subset of grouped constants enum B { CONST_3 (D.CONST_7.toString()), CONST_4 (D.CONST_8.toString()); private final String strVal; private B (String strVal) { this.strVal = strVal; } public String toString() { return this.strVal; } } // Associated Enum contained subset of grouped constants enum C { CONST_5 (D.CONST_9.toString()), CONST_6 (D.CONST_10.toString()); private final String strVal; private C (String strVal) { this.strVal = strVal; } public String toString() { return this.strVal; } } } // Separate Enum containing all ungrouped constants enum D { CONST_7 ("const_7"), CONST_8 ("const_8"); CONST_9 ("const_9"), CONST_10 ("const_10"); private final String strVal; private D (String strVal) { this.strVal = strVal; } public String toString() { return this.strVal; } } </code></pre> <p>Obviously this syntax doesn't work OOTB because you cannot pass classes in Java this way. But can anyone suggest a way in which I could achieve this?</p> <p>I am hoping to use it to validate static structured groupings in a client-side application.</p>
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    1. COhttp://stackoverflow.com/questions/221892/java-extendable-enumeration?rq=1
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      1. USMarkus Mikkolainen
 

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