Package org.apache.camel

Examples of org.apache.camel.Expression

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        assertTrue(predicate.matches(exchange));

        predicate = SimpleLanguage.predicate("${header.bar} == 124");
        assertFalse(predicate.matches(exchange));

        Expression expression = SimpleLanguage.expression("${body}");
        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));

        expression = SimpleLanguage.simple("${body}");
        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));
        expression = SimpleLanguage.simple("${body}", String.class);
        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));

        expression = SimpleLanguage.simple("${header.bar} == 123", boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 123", Boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", Boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
    }
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            assertEquals("expression must be specified", e.getMessage());
        }
    }

    public void testBodyExpression() throws Exception {
        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
    }
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        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
    }

    public void testBodyExpressionUsingAlternativeStartToken() throws Exception {
        Expression exp = SimpleLanguage.simple("$simple{body}");
        assertNotNull(exp);
    }
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        assertNotNull(exp);
    }

    public void testBodyExpressionNotStringType() throws Exception {
        exchange.getIn().setBody(123);
        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
        Object val = exp.evaluate(exchange, Object.class);
        assertIsInstanceOf(Integer.class, val);
        assertEquals(123, val);
    }
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        return "simple";
    }

    protected void assertExpressionResultInstanceOf(String expressionText, Class<?> expectedType) {
        Language language = assertResolveLanguage(getLanguageName());
        Expression expression = language.createExpression(expressionText);
        assertNotNull("Cannot assert type when no type is provided", expectedType);
        assertNotNull("No Expression could be created for text: " + expressionText + " language: " + language, expression);
        Object answer = expression.evaluate(exchange, Object.class);
        assertIsInstanceOf(expectedType, answer);
    }
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        for (int i = 0; i < size / 2; i++) {
            Class<?> oldType = parameterTypes[i];
            if (oldParameters.size() == 0) {
                // the first parameter is the body
                Expression oldBody = ExpressionBuilder.mandatoryBodyExpression(oldType);
                ParameterInfo info = new ParameterInfo(i, oldType, null, oldBody);
                oldParameters.add(info);
            } else if (oldParameters.size() == 1) {
                // the 2nd parameter is the headers
                Expression oldHeaders = ExpressionBuilder.headersExpression();
                ParameterInfo info = new ParameterInfo(i, oldType, null, oldHeaders);
                oldParameters.add(info);
            } else if (oldParameters.size() == 2) {
                // the 3rd parameter is the properties
                Expression oldProperties = ExpressionBuilder.propertiesExpression();
                ParameterInfo info = new ParameterInfo(i, oldType, null, oldProperties);
                oldParameters.add(info);
            }
        }

        for (int i = size / 2; i < size; i++) {
            Class<?> newType = parameterTypes[i];
            if (newParameters.size() == 0) {
                // the first parameter is the body
                Expression newBody = ExpressionBuilder.mandatoryBodyExpression(newType);
                ParameterInfo info = new ParameterInfo(i, newType, null, newBody);
                newParameters.add(info);
            } else if (newParameters.size() == 1) {
                // the 2nd parameter is the headers
                Expression newHeaders = ExpressionBuilder.headersExpression();
                ParameterInfo info = new ParameterInfo(i, newType, null, newHeaders);
                newParameters.add(info);
            } else if (newParameters.size() == 2) {
                // the 3rd parameter is the properties
                Expression newProperties = ExpressionBuilder.propertiesExpression();
                ParameterInfo info = new ParameterInfo(i, newType, null, newProperties);
                newParameters.add(info);
            }
        }
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        assertTrue(predicate.matches(exchange));

        predicate = SimpleLanguage.predicate("${header.bar} == 124");
        assertFalse(predicate.matches(exchange));

        Expression expression = SimpleLanguage.expression("${body}");
        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));

        expression = SimpleLanguage.simple("${body}");
        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));
        expression = SimpleLanguage.simple("${body}", String.class);
        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));

        expression = SimpleLanguage.simple("${header.bar} == 123", boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 123", Boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", Boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
    }
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            assertEquals("expression must be specified", e.getMessage());
        }
    }

    public void testBodyExpression() throws Exception {
        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
    }
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        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
    }

    public void testBodyExpressionUsingAlternativeStartToken() throws Exception {
        Expression exp = SimpleLanguage.simple("$simple{body}");
        assertNotNull(exp);
    }
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        assertNotNull(exp);
    }

    public void testBodyExpressionNotStringType() throws Exception {
        exchange.getIn().setBody(123);
        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
        Object val = exp.evaluate(exchange, Object.class);
        assertIsInstanceOf(Integer.class, val);
        assertEquals(123, val);
    }
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Related Classes of org.apache.camel.Expression

  • org.apache.camel.builder.Builder
  • org.apache.camel.builder.DeadLetterChannelBuilder
  • org.apache.camel.builder.DefaultErrorHandlerBuilder
  • org.apache.camel.builder.ExpressionBuilderTest
  • org.apache.camel.builder.ExpressionClause
  • org.apache.camel.builder.NotifyBuilder
  • org.apache.camel.builder.PredicateBinaryCoerceTypeTest
  • org.apache.camel.builder.PredicateBuilderConcurrentTest
  • org.apache.camel.builder.sql.SqlTest
  • org.apache.camel.builder.ValueBuilder
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