Examples of org.apache.camel.support.ExpressionAdapter

org.apache.camel.support.ExpressionAdapter
A helper class for developers wishing to implement an {@link org.apache.camel.Expression}using Java code with a minimum amount of code to write so that the developer only needs to implement one of the {@link #evaluate(org.apache.camel.Exchange,Class)} or{@link #evaluate(org.apache.camel.Exchange)} methods. @version

     * in a simple OGNL notation
     *
     * @param ognl  methods to invoke on the body in a simple OGNL syntax
     */
    public static Expression exchangeExceptionOgnlExpression(final String ognl) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                Object exception = exchange.getException();
                if (exception == null) {
                    exception = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Exception.class);
                }

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     * Returns an expression for the type converter
     *
     * @return an expression object which will return the type converter
     */
    public static Expression typeConverterExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getContext().getTypeConverter();
            }


            @Override

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     * Returns an expression for the {@link org.apache.camel.spi.Registry}
     *
     * @return an expression object which will return the registry
     */
    public static Expression registryExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getContext().getRegistry();
            }


            @Override

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     * Returns an expression for lookup a bean in the {@link org.apache.camel.spi.Registry}
     *
     * @return an expression object which will return the bean
     */
    public static Expression refExpression(final String ref) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getContext().getRegistry().lookupByName(ref);
            }


            @Override

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     * Returns an expression for the {@link org.apache.camel.CamelContext}
     *
     * @return an expression object which will return the camel context
     */
    public static Expression camelContextExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getContext();
            }


            @Override

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     * Returns an expression for the {@link org.apache.camel.CamelContext} name
     *
     * @return an expression object which will return the camel context name
     */
    public static Expression camelContextNameExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getContext().getName();
            }


            @Override

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     *
     * @see <tt>Exchange.getException().getMessage()</tt>
     * @return an expression object which will return the exception message set on the exchange
     */
    public static Expression exchangeExceptionMessageExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                Exception exception = exchange.getException();
                if (exception == null) {
                    exception = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Exception.class);
                }

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     * Returns an expression for an exception stacktrace set on the exchange
     *
     * @return an expression object which will return the exception stacktrace set on the exchange
     */
    public static Expression exchangeExceptionStackTraceExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                Exception exception = exchange.getException();
                if (exception == null) {
                    exception = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Exception.class);
                }

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     *
     * @param propertyName the name of the property the expression will return
     * @return an expression object which will return the property value
     */
    public static Expression propertyExpression(final String propertyName) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getProperty(propertyName);
            }


            @Override

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     * Returns an expression for the properties of exchange
     *
     * @return an expression object which will return the properties
     */
    public static Expression propertiesExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getProperties();
            }


            @Override

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