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package org.apache.camel.impl; |
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import java.util.HashMap; |
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import java.util.Map; |
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import org.apache.camel.CamelContext; |
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import org.apache.camel.Exchange; |
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import org.apache.camel.Message; |
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import org.apache.camel.util.UuidGenerator; |
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public class DefaultExchange implements Exchange { |
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private static final UuidGenerator DEFAULT_ID_GENERATOR = new UuidGenerator(); |
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protected final CamelContext context; |
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private Map<String, Object> properties; |
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private Message in; |
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private Message out; |
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private Message fault; |
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private Throwable exception; |
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private String exchangeId = DefaultExchange.DEFAULT_ID_GENERATOR.generateId(); |
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public DefaultExchange(CamelContext context) { |
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this.context = context; |
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} |
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@Override |
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public String toString() { |
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return "Exchange[" + in + "]"; |
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} |
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public Exchange copy() { |
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Exchange exchange = newInstance(); |
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exchange.copyFrom(this); |
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return exchange; |
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} |
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public void copyFrom(Exchange exchange) { |
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if (exchange == this) { |
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return; |
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} |
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setProperties(safeCopy(exchange.getProperties())); |
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safeCopy(getIn(), exchange, exchange.getIn()); |
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Message copyOut = exchange.getOut(); |
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if (copyOut != null) { |
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safeCopy(getOut(true), exchange, copyOut); |
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} |
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Message copyFault = exchange.getFault(); |
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if (copyFault != null) { |
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safeCopy(getFault(), exchange, copyFault); |
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} |
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setException(exchange.getException()); |
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} |
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private static void safeCopy(Message message, Exchange exchange, Message that) { |
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if (message != null) { |
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message.copyFrom(that); |
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} |
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} |
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private static Map<String, Object> safeCopy(Map<String, Object> properties) { |
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if (properties == null) { |
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return null; |
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} |
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return new HashMap<String, Object>(properties); |
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} |
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private static Message safeCopy(Exchange exchange, Message message) { |
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if (message == null) { |
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return null; |
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} |
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Message answer = message.copy(); |
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if (answer instanceof MessageSupport) { |
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MessageSupport messageSupport = (MessageSupport) answer; |
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messageSupport.setExchange(exchange); |
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} |
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return answer; |
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} |
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public Exchange newInstance() { |
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return new DefaultExchange(context); |
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} |
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public CamelContext getContext() { |
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return context; |
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} |
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public Object getProperty(String name) { |
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if (properties != null) { |
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return properties.get(name); |
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} |
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return null; |
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} |
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public <T> T getProperty(String name, Class<T> type) { |
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Object value = getProperty(name); |
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return getContext().getTypeConverter().convertTo(type, value); |
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} |
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public void setProperty(String name, Object value) { |
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getProperties().put(name, value); |
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} |
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public Map<String, Object> getProperties() { |
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if (properties == null) { |
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properties = new HashMap<String, Object>(); |
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} |
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return properties; |
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} |
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public void setProperties(Map<String, Object> properties) { |
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this.properties = properties; |
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} |
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public Message getIn() { |
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if (in == null) { |
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in = createInMessage(); |
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configureMessage(in); |
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} |
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return in; |
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} |
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public void setIn(Message in) { |
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this.in = in; |
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configureMessage(in); |
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} |
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public Message getOut() { |
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return getOut(true); |
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} |
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public Message getOut(boolean lazyCreate) { |
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if (out == null && lazyCreate) { |
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out = createOutMessage(); |
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configureMessage(out); |
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} |
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return out; |
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} |
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public void setOut(Message out) { |
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this.out = out; |
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configureMessage(out); |
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} |
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public Throwable getException() { |
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return exception; |
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} |
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public void setException(Throwable exception) { |
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this.exception = exception; |
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} |
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public Message getFault() { |
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return fault; |
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} |
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public void setFault(Message fault) { |
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this.fault = fault; |
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configureMessage(fault); |
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} |
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public String getExchangeId() { |
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return exchangeId; |
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} |
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public void setExchangeId(String id) { |
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this.exchangeId = id; |
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} |
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protected Message createInMessage() { |
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return new DefaultMessage(); |
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} |
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protected Message createOutMessage() { |
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return new DefaultMessage(); |
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} |
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protected void configureMessage(Message message) { |
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if (message instanceof MessageSupport) { |
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MessageSupport messageSupport = (MessageSupport)message; |
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messageSupport.setExchange(this); |
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} |
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} |
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} |