Chapter 43. Exchange Interface

package org.apache.camel;

import java.util.Map;

import org.apache.camel.spi.Synchronization;
import org.apache.camel.spi.UnitOfWork;

public interface Exchange {
    // Exchange property names (string constants)
    // (Not shown here)
    ...

    ExchangePattern getPattern();
    void setPattern(ExchangePattern pattern);

    Object getProperty(String name);
    Object getProperty(String name, Object defaultValue);
    <T> T  getProperty(String name, Class<T> type);
    <T> T  getProperty(String name, Object defaultValue, Class<T> type);
    void   setProperty(String name, Object value);
    Object removeProperty(String name);
    Map<String, Object> getProperties();
    boolean hasProperties();

    Message getIn();
    <T> T   getIn(Class<T> type);
    void    setIn(Message in);

    Message getOut();
    <T> T   getOut(Class<T> type);
    void    setOut(Message out);
    boolean hasOut();

    Throwable getException();
    <T> T     getException(Class<T> type);
    void      setException(Throwable e);

    boolean isFailed();

    boolean isTransacted();

    boolean isRollbackOnly();

    CamelContext getContext();

    Exchange copy();

    Endpoint getFromEndpoint();
    void     setFromEndpoint(Endpoint fromEndpoint);

    String getFromRouteId();
    void   setFromRouteId(String fromRouteId);

    UnitOfWork getUnitOfWork();
    void setUnitOfWork(UnitOfWork unitOfWork);

    String getExchangeId();
    void setExchangeId(String id);

    void addOnCompletion(Synchronization onCompletion);
    void handoverCompletions(Exchange target);
}