Examples of tcg.common.util.ExpressionParser.evaluate()

tcg.common.util.ExpressionParser.evaluate()
Evaluate the expression.
If the expression is not yet parsed, it will be parsed. If the operation (both the parsing, if it is not yet done, and the evaluation) fails, the return value is null. The caller is responsible for converting the result into the correct type. @return the result of the expression if successful, null otherwise. @throws Exception when the evaluation fails, exception is thrown.

      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (4 <= 6)
      parser.set("var1", new Integer(4));
      parser.set("var2", new Integer(6));
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (6 <= 6)
      parser.set("var1", new Integer(6));
      parser.set("var2", new Integer(6));

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (6 <= 6)
      parser.set("var1", new Integer(6));
      parser.set("var2", new Integer(6));
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (8 < 6)
      parser.set("var1", new Integer(8));
      parser.set("var2", new Integer(6));

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (8 < 6)
      parser.set("var1", new Integer(8));
      parser.set("var2", new Integer(6));
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
    }
    catch(Exception ex)
    {

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    parser.createVariable("var1", Boolean.class, Boolean.FALSE);
    parser.createVariable("var2", Boolean.class, Boolean.FALSE);
    try
    {
      //initial state
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false || false)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.FALSE);

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false || false)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.FALSE);
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false || true)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.TRUE);

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false || true)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.TRUE);
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (true || false)
      parser.set("var1", Boolean.TRUE);
      parser.set("var2", Boolean.FALSE);

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (true || false)
      parser.set("var1", Boolean.TRUE);
      parser.set("var2", Boolean.FALSE);
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (true || true)
      parser.set("var1", Boolean.TRUE);
      parser.set("var2", Boolean.TRUE);

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
      //evaluate (true || true)
      parser.set("var1", Boolean.TRUE);
      parser.set("var2", Boolean.TRUE);
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(true, boolResult.booleanValue());
    }
    catch(Exception ex)
    {

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    parser.createVariable("var1", Boolean.class, Boolean.FALSE);
    parser.createVariable("var2", Boolean.class, Boolean.FALSE);
    try
    {
      //initial state
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false && false)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.FALSE);

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      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false && false)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.FALSE);
      boolResult = (Boolean)parser.evaluate();
      Assert.assertNotNull(boolResult);
      Assert.assertEquals(false, boolResult.booleanValue());
      //evaluate (false && true)
      parser.set("var1", Boolean.FALSE);
      parser.set("var2", Boolean.TRUE);

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