package org.kuali.rice.core.api.parameter;

 import org.kuali.rice.core.api.mo.common.Coded;

 import org.kuali.rice.core.api.util.jaxb.EnumStringAdapter;

 /**

  * Defines the possible evaluation operators that can be supported on system parameters.

  */

 public enum EvaluationOperator implements Coded {

         /**

          * Indicates that evaluation will determine if the value being tested in present

          * in the set of values defined on the parameter.  If it is present in this set,

          * then evaluation will succeed.

          */

         ALLOW("A"),

         /**

          * Indicates that evaluation will determine if the value being tested is absent

          * from the set of values defined on the parameter.  If it is absent from this

          * set, then the evaluation will succeed.

          */

         DISALLOW("D");

         private final String code;

         EvaluationOperator(final String code) {

                 this.code = code;

         }

         /**

          * Returns the operator code for this evaluation operator.

          * 

          * @return the code

          */

         @Override

         public String getCode() {

                 return code;

         }

         public static EvaluationOperator fromCode(String code) {

                 if (code == null) {

                         return null;

                 }

                 for (EvaluationOperator operator : values()) {

                         if (operator.code.equals(code)) {

                                 return operator;

                         }

                 }

                 throw new IllegalArgumentException("Failed to locate the EvaluationOperator with the given code: " + code);

         }

         static final class Adapter extends EnumStringAdapter<EvaluationOperator> {

                 protected Class<EvaluationOperator> getEnumClass() {

                         return EvaluationOperator.class;

                 }

         }

 }