Package org.apache.camel.support

Examples of org.apache.camel.support.ExpressionAdapter

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     * 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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     * 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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     *
     * @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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     * @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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     * @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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     * 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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     *
     * @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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     *
     * @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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     *
     * @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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     *
     * @see Exchange#getException()
     * @return an expression object which will return the exception set on the exchange
     */
    public static Expression exchangeExceptionExpression() {
        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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Related Classes of org.apache.camel.support.ExpressionAdapter

  • org.apache.camel.builder.ExpressionBuilder
  • org.apache.camel.component.bean.CustomParameterMappingStrategyTest$MyCustomStrategy
  • org.apache.camel.component.hl7.HL7
  • org.apache.camel.component.hl7.TerserLanguage
  • org.apache.camel.component.jgroups.JGroupsExpressions
  • org.apache.camel.component.jpa.JpaEndpoint
  • org.apache.camel.issues.NeilSplitterTest
  • org.apache.camel.language.ref.RefLanguage
  • org.apache.camel.model.InterceptFromDefinition
  • org.apache.camel.processor.SetHeaderUsingDslExpressionsTest
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