package org.andromda.translation.ocl.syntax;
   
   import org.andromda.core.common.ExceptionUtils;
   import org.apache.commons.lang.StringUtils;
   
   /**
    * An implementation of the ocl OperationDeclaration facade.
    *
    * @author Chad Brandon
   * @see org.andromda.translation.ocl.syntax.OperationDeclaration
   */
  public class OperationDeclarationImpl
          implements OperationDeclaration
  {
      private String name;
      private String returnType;
      private VariableDeclaration[] arguments = new VariableDeclaration[0];
  
      /**
       * Constructs a new OperationDeclarationImpl
       *
       * @param name       the name of the Operation
       * @param returnType the returnType of the operation
       * @param arguments  the arguments of the operation.
       */
      public OperationDeclarationImpl(String name, String returnType, VariableDeclaration[] arguments)
      {
          ExceptionUtils.checkEmpty("name", name);
          this.name = StringUtils.trimToEmpty(name);
          this.returnType = StringUtils.trimToEmpty(returnType);
          this.arguments = arguments;
      }
  
      /**
       * @see org.andromda.translation.ocl.syntax.OperationDeclaration#getName()
       */
      public String getName()
      {
          return this.name;
      }
  
      /**
       * @see org.andromda.translation.ocl.syntax.OperationDeclaration#getReturnType()
       */
      public String getReturnType()
      {
          return this.returnType;
      }
  
      /**
       * @see org.andromda.translation.ocl.syntax.OperationDeclaration#getArguments()
       */
      public VariableDeclaration[] getArguments()
      {
          return arguments;
      }
  
      /**
       * @see Object#toString()
       */
      public String toString()
      {
          StringBuilder toString = new StringBuilder(this.getName());
          toString.append('(');
          if (this.getArguments().length > 0)
          {
              toString.append(StringUtils.join(this.getArguments(), ','));
          }
          toString.append(')');
          if (StringUtils.isNotBlank(this.getReturnType()))
          {
              toString.append("::");
              toString.append(this.getReturnType());
          }
          return toString.toString();
      }
  
  }