package org.apache.commons.contract.descriptor;

 import org.apache.commons.contract.constraints.Constraints;

 import org.apache.commons.contract.i18n.ParameterBundle;

 public class ParameterDescriptor extends Descriptor {

         public final static ParameterDescriptor[] NO_PARAMETERS = new ParameterDescriptor[0];

     protected Constraints constraints;

     protected Object defaultValue;

     protected boolean required;

     public ParameterDescriptor(String name, ParameterBundle description, Constraints valueDescriptor) {

         super(name, description);

         this.constraints = valueDescriptor;

         this.required = true;

     }

     public ParameterDescriptor(String name, ParameterBundle description, Constraints valueDescriptor, Object defaultValue) {

         super(name, description);

         this.constraints = valueDescriptor;

         this.defaultValue  = defaultValue;

         this.required = false;

     }

     public boolean isRequired() {

         return required;

     }

     public void setConstraints(Constraints valueDescriptor) {

         this.constraints = valueDescriptor;

     }

     public Constraints getConstraints() {

         return constraints;

     }

     public void setDefaultValue(Object defaultValue) {

         this.defaultValue = defaultValue;

         this.required = true;

     }

     public Object getDefaultValue() {

         return defaultValue;

     }

     public boolean equals(Object o) {

             if ( o instanceof ParameterDescriptor && ((ParameterDescriptor)o).getName().equals(getName())) return true;

             return false;

     }

 }