Examples of ExpressionAdapter

org.apache.camel.impl.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,Class)} methods. @version $Revision: 766032 $
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

Examples of org.apache.camel.impl.ExpressionAdapter

     * <p/>
     * The expression is evaluted as a {@link List} object to allow sorting.
     */
    @SuppressWarnings("unchecked")
    public static Expression sortExpression(final Expression expression, final Comparator comparator) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                List list = expression.evaluate(exchange, List.class);
                Collections.sort(list, comparator);
                return list;
            }

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Examples of org.apache.camel.support.ExpressionAdapter

     * Returns an expression for the inbound message attachments
     *
     * @return an expression object which will return the inbound message attachments
     */
    public static Expression attachmentsExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getIn().getAttachments();
            }


            @Override

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Examples of org.apache.camel.support.ExpressionAdapter

     * Returns an expression for the inbound message attachments
     *
     * @return an expression object which will return the inbound message attachments
     */
    public static Expression attachmentValuesExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getIn().getAttachments().values();
            }


            @Override

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Examples of org.apache.camel.support.ExpressionAdapter

     *
     * @param headerName the name of the header the expression will return
     * @return an expression object which will return the header value
     */
    public static Expression headerExpression(final String headerName) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                Object header = exchange.getIn().getHeader(headerName);
                if (header == null) {
                    // fall back on a property
                    header = exchange.getProperty(headerName);

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Examples of org.apache.camel.support.ExpressionAdapter

     * @param headerName the name of the header the expression will return
     * @param type the type to convert to
     * @return an expression object which will return the header value
     */
    public static <T> Expression headerExpression(final String headerName, final Class<T> type) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                Object header = exchange.getIn().getHeader(headerName, type);
                if (header == null) {
                    // fall back on a property
                    header = exchange.getProperty(headerName, type);

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Examples of org.apache.camel.support.ExpressionAdapter

     * @param headerName the name of the header the expression will return
     * @param name the type to convert to as a FQN class name
     * @return an expression object which will return the header value
     */
    public static Expression headerExpression(final String headerName, final String name) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                Class<?> type;
                try {
                    type = exchange.getContext().getClassResolver().resolveMandatoryClass(name);
                } catch (ClassNotFoundException e) {

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Examples of org.apache.camel.support.ExpressionAdapter

     * Returns an expression for the inbound message headers
     *
     * @return an expression object which will return the inbound headers
     */
    public static Expression headersExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getIn().getHeaders();
            }


            @Override

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Examples of org.apache.camel.support.ExpressionAdapter

     *
     * @param headerName the name of the header the expression will return
     * @return an expression object which will return the header value
     */
    public static Expression outHeaderExpression(final String headerName) {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                if (!exchange.hasOut()) {
                    return null;
                }

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Examples of org.apache.camel.support.ExpressionAdapter

     *
     * @return an expression object which will return the headers, will be <tt>null</tt> if the
     * exchange is not out capable.
     */
    public static Expression outHeadersExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                // only get out headers if the MEP is out capable
                if (ExchangeHelper.isOutCapable(exchange)) {
                    return exchange.getOut().getHeaders();
                } else {

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Examples of org.apache.camel.support.ExpressionAdapter

     *
     * @see org.apache.camel.Exchange#getPattern()
     * @return an expression object which will return the exchange pattern
     */
    public static Expression exchangePatternExpression() {
        return new ExpressionAdapter() {
            public Object evaluate(Exchange exchange) {
                return exchange.getPattern();
            }


            @Override

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