Examples of org.springframework.expression.OperatorOverloader

org.springframework.expression.OperatorOverloader
By default the mathematical operators {@link Operation} support simple types like numbers. By providing animplementation of OperatorOverloader, a user of the expression language can support these operations on other types. @author Andy Clement @since 3.0

    }
    return null;
  }


  public TypedValue operate(Operation op, Object left, Object right) throws EvaluationException {
    OperatorOverloader overloader = this.relatedContext.getOperatorOverloader();
    if (overloader.overridesOperation(op, left, right)) {
      Object returnValue = overloader.operate(op, left, right);
      return new TypedValue(returnValue);
    }
    else {
      String leftType = (left==null?"null":left.getClass().getName());
      String rightType = (right==null?"null":right.getClass().getName());

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    }
    return null;
  }


  public TypedValue operate(Operation op, Object left, Object right) throws EvaluationException {
    OperatorOverloader overloader = this.relatedContext.getOperatorOverloader();
    if (overloader.overridesOperation(op, left, right)) {
      Object returnValue = overloader.operate(op, left, right);
      return new TypedValue(returnValue);
    }
    else {
      String leftType = (left==null?"null":left.getClass().getName());
      String rightType = (right==null?"null":right.getClass().getName());

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    }
    return null;
  }


  public TypedValue operate(Operation op, Object left, Object right) throws EvaluationException {
    OperatorOverloader overloader = this.relatedContext.getOperatorOverloader();
    if (overloader.overridesOperation(op, left, right)) {
      Object returnValue = overloader.operate(op, left, right);
      return new TypedValue(returnValue,TypeDescriptor.forObject(returnValue));
    }
    else {
      String leftType = (left==null?"null":left.getClass().getName());
      String rightType = (right==null?"null":right.getClass().getName());

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    assertEquals(tl, context.getTypeLocator());
  }


  @Test(expected = EvaluationException.class)
  public void testStandardOperatorOverloader() throws EvaluationException {
    OperatorOverloader oo = new StandardOperatorOverloader();
    assertFalse(oo.overridesOperation(Operation.ADD, null, null));
    oo.operate(Operation.ADD, 2, 3);
  }

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    }
    return null;
  }


  public TypedValue operate(Operation op, Object left, Object right) throws EvaluationException {
    OperatorOverloader overloader = this.relatedContext.getOperatorOverloader();
    if (overloader.overridesOperation(op, left, right)) {
      Object returnValue = overloader.operate(op, left, right);
      return new TypedValue(returnValue,TypeDescriptor.forObject(returnValue));
    }
    else {
      String leftType = (left==null?"null":left.getClass().getName());
      String rightType = (right==null?"null":right.getClass().getName());

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    }
    return null;
  }


  public TypedValue operate(Operation op, Object left, Object right) throws EvaluationException {
    OperatorOverloader overloader = this.relatedContext.getOperatorOverloader();
    if (overloader.overridesOperation(op, left, right)) {
      Object returnValue = overloader.operate(op, left, right);
      return new TypedValue(returnValue);
    }
    else {
      String leftType = (left == null ? "null" : left.getClass().getName());
      String rightType = (right == null? "null" : right.getClass().getName());

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Related Classes of org.springframework.expression.OperatorOverloader

org.springframework.expression.spel.ExpressionState

org.springframework.expression.spel.support.StandardComponentsTests

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