Package org.apache.camel.spi

Examples of org.apache.camel.spi.Language

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    /**
     * Asserts that the given language name and expression evaluates to the
     * given value on a specific exchange
     */
    protected void assertExpression(Exchange exchange, String languageName, String expressionText, Object expectedValue) {
        Language language = assertResolveLanguage(languageName);

        Expression expression = language.createExpression(expressionText);
        assertNotNull("No Expression could be created for text: " + expressionText + " language: " + language, expression);

        assertExpression(expression, exchange, expectedValue);
    }
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    /**
     * Asserts that the given language name and predicate expression evaluates
     * to the expected value on the message exchange
     */
    protected void assertPredicate(String languageName, String expressionText, Exchange exchange, boolean expected) {
        Language language = assertResolveLanguage(languageName);

        Predicate predicate = language.createPredicate(expressionText);
        assertNotNull("No Predicate could be created for text: " + expressionText + " language: " + language, predicate);

        assertPredicate(predicate, exchange, expected);
    }
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    /**
     * Asserts that the language name can be resolved
     */
    protected Language assertResolveLanguage(String languageName) {
        Language language = context.resolveLanguage(languageName);
        assertNotNull("No language found for name: " + languageName, language);
        return language;
    }
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    /**
     * Asserts that the given language name and expression evaluates to the
     * given value on a specific exchange
     */
    protected void assertExpression(Exchange exchange, String languageName, String expressionText, Object expectedValue) {
        Language language = assertResolveLanguage(languageName);

        Expression expression = language.createExpression(expressionText);
        assertNotNull("No Expression could be created for text: " + expressionText + " language: " + language, expression);

        assertExpression(expression, exchange, expectedValue);
    }
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    /**
     * Asserts that the given language name and predicate expression evaluates
     * to the expected value on the message exchange
     */
    protected void assertPredicate(String languageName, String expressionText, Exchange exchange, boolean expected) {
        Language language = assertResolveLanguage(languageName);

        Predicate predicate = language.createPredicate(expressionText);
        assertNotNull("No Predicate could be created for text: " + expressionText + " language: " + language, predicate);

        assertPredicate(predicate, exchange, expected);
    }
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    /**
     * Asserts that the language name can be resolved
     */
    protected Language assertResolveLanguage(String languageName) {
        Language language = context.resolveLanguage(languageName);
        assertNotNull("No language found for name: " + languageName, language);
        return language;
    }
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    protected void assertExpressionResultInstanceOf(String expressionText, Class<?> expectedType) {
        // TODO [hz]: we should refactor TestSupport.assertExpression(Expression, Exchange, Object)
        // into 2 methods, a helper that returns the value and use that helper in assertExpression
        // Then use the helper here to get the value and move this method to LanguageTestSupport
        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(Animal.class, answer);
    }
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        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                // resolve language using context to have a clear separation of packages
                // must call evaluate to return the nested language evaluate when evaluating
                // stacked expressions
                Language language = exchange.getContext().resolveLanguage("simple");
                return language.createExpression(expression).evaluate(exchange, Object.class);
            }

            @Override
            public String toString() {
                return "simple(" + expression + ")";
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        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                // resolve language using context to have a clear separation of packages
                // must call evaluate to return the nested language evaluate when evaluating
                // stacked expressions
                Language language = exchange.getContext().resolveLanguage("bean");
                return language.createExpression(expression).evaluate(exchange, Object.class);
            }

            @Override
            public String toString() {
                return "bean(" + expression + ")";
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    // Helper methods
    // -----------------------------------------------------------------------

    public Language resolveLanguage(String language) {
        Language answer;
        synchronized (languages) {
            answer = languages.get(language);

            // check if the language is singleton, if so return the shared instance
            if (answer instanceof IsSingleton) {
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Related Classes of org.apache.camel.spi.Language

  • org.apache.camel.builder.DefaultErrorHandlerBuilder
  • org.apache.camel.builder.ExpressionBuilder
  • org.apache.camel.builder.ExpressionClause
  • org.apache.camel.builder.ExpressionClauseSupport
  • org.apache.camel.builder.FileExpressionBuilder
  • org.apache.camel.builder.xml.XPathBuilder
  • org.apache.camel.component.bean.DefaultAnnotationExpressionFactory
  • org.apache.camel.component.file.GenericFileDefaultSorter
  • org.apache.camel.component.file.GenericFileEndpoint
  • org.apache.camel.component.file.GenericFileProducer
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