Examples of org.springframework.expression.spel.ExpressionState

Package org.springframework.expression.spel

Examples of org.springframework.expression.spel.ExpressionState

org.springframework.expression.spel.ExpressionState
An ExpressionState is for maintaining per-expression-evaluation state, any changes to it are not seen by other expressions but it gives a place to hold local variables and for component expressions in a compound expression to communicate state. This is in contrast to the EvaluationContext, which is shared amongst expression evaluations, and any changes to it will be seen by other expressions or any code that chooses to ask questions of the context.
It also acts as a place for to define common utility routines that the various Ast nodes might need. @author Andy Clement @since 3.0

    return ast.isWritable(new ExpressionState(context, toTypedValue(rootObject), configuration));
  }


  public void setValue(EvaluationContext context, Object value) throws EvaluationException {
    Assert.notNull(context, "The EvaluationContext is required");    
    ast.setValue(new ExpressionState(context, configuration), value);
  }

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    Assert.notNull(context, "The EvaluationContext is required");    
    ast.setValue(new ExpressionState(context, configuration), value);
  }


  public void setValue(Object rootObject, Object value) throws EvaluationException {
    ast.setValue(new ExpressionState(getEvaluationContext(), toTypedValue(rootObject), configuration), value);
  }

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    ast.setValue(new ExpressionState(getEvaluationContext(), toTypedValue(rootObject), configuration), value);
  }
  
  public void setValue(EvaluationContext context, Object rootObject, Object value) throws EvaluationException {
    Assert.notNull(context, "The EvaluationContext is required");    
    ast.setValue(new ExpressionState(context, toTypedValue(rootObject), configuration), value);
  }

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    new OpPlus(-1);
  }


  @Test(expected = SpelEvaluationException.class)
  public void test_unaryPlusWithStringLiteral() {
    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    StringLiteral str = new StringLiteral("word", -1, "word");


    OpPlus o = new OpPlus(-1, str);
    o.getValueInternal(expressionState);

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    o.getValueInternal(expressionState);
  }


  @Test
  public void test_unaryPlusWithNumberOperand() {
    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    {
      RealLiteral realLiteral = new RealLiteral("123.00", -1, 123.0);
      OpPlus o = new OpPlus(-1, realLiteral);
      TypedValue value = o.getValueInternal(expressionState);

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    }
  }


  @Test
  public void test_binaryPlusWithNumberOperands() {
    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    {
      RealLiteral n1 = new RealLiteral("123.00", -1, 123.0);
      RealLiteral n2 = new RealLiteral("456.00", -1, 456.0);
      OpPlus o = new OpPlus(-1, n1, n2);

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    }
  }


  @Test
  public void test_binaryPlusWithStringOperands() {
    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    StringLiteral n1 = new StringLiteral("\"foo\"", -1, "\"foo\"");
    StringLiteral n2 = new StringLiteral("\"bar\"", -1, "\"bar\"");
    OpPlus o = new OpPlus(-1, n1, n2);
    TypedValue value = o.getValueInternal(expressionState);

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    assertEquals("foobar", value.getValue());
  }


  @Test
  public void test_binaryPlusWithLeftStringOperand() {
    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    StringLiteral n1 = new StringLiteral("\"number is \"", -1, "\"number is \"");
    LongLiteral n2 = new LongLiteral("123", -1, 123);
    OpPlus o = new OpPlus(-1, n1, n2);
    TypedValue value = o.getValueInternal(expressionState);

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    assertEquals("number is 123", value.getValue());
  }


  @Test
  public void test_binaryPlusWithRightStringOperand() {
    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    LongLiteral n1 = new LongLiteral("123", -1, 123);
    StringLiteral n2 = new StringLiteral("\" is a number\"", -1, "\" is a number\"");
    OpPlus o = new OpPlus(-1, n1, n2);
    TypedValue value = o.getValueInternal(expressionState);

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  }


  @Test
  public void test_binaryPlusWithTime_ToString() {


    ExpressionState expressionState = new ExpressionState(new StandardEvaluationContext());


    Time time = new Time(new Date().getTime());


    VariableReference var = new VariableReference("timeVar", -1);
    var.setValue(expressionState, time);

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Related Classes of org.springframework.expression.spel.ExpressionState

org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer

org.springframework.expression.OperatorOverloader

org.springframework.expression.spel.ast.OpPlusTests

org.springframework.expression.spel.ast.SpelNodeImpl

org.springframework.expression.spel.standard.SpelExpression

org.springframework.expression.TypedValue

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