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package org.apache.camel.builder; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import org.apache.camel.CamelContext; |
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import org.apache.camel.Endpoint; |
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import org.apache.camel.Exchange; |
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import org.apache.camel.Processor; |
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import org.apache.camel.Route; |
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import org.apache.camel.impl.DefaultCamelContext; |
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public abstract class RouteBuilder extends BuilderSupport { |
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private List<FromBuilder> fromBuilders = new ArrayList<FromBuilder>(); |
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private AtomicBoolean initalized = new AtomicBoolean(false); |
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private List<Route> routes = new ArrayList<Route>(); |
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protected RouteBuilder() { |
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this(null); |
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} |
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protected RouteBuilder(CamelContext context) { |
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super(context); |
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} |
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public abstract void configure() throws Exception; |
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@Fluent |
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public FromBuilder from( @FluentArg("uri") String uri) { |
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if( uri == null ) { |
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throw new IllegalArgumentException("uri parameter cannot be null"); |
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} |
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Endpoint endpoint = endpoint(uri); |
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if( endpoint == null ) { |
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throw new IllegalArgumentException("uri '"+uri+"' could not be resolved."); |
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} |
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return from(endpoint); |
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} |
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@Fluent |
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public FromBuilder from( @FluentArg("ref") Endpoint endpoint) { |
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FromBuilder answer = new FromBuilder(this, endpoint); |
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addFromBuilder(answer); |
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return answer; |
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} |
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public RouteBuilder errorHandler(ErrorHandlerBuilder errorHandlerBuilder) { |
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setErrorHandlerBuilder(errorHandlerBuilder); |
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return this; |
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} |
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public RouteBuilder inheritErrorHandler(boolean value) { |
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setInheritErrorHandler(value); |
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return this; |
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} |
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public CamelContext getContext() { |
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CamelContext context = super.getContext(); |
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if (context == null) { |
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context = createContainer(); |
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setContext(context); |
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} |
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return context; |
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} |
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public List<Route> getRouteList() throws Exception { |
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checkInitialized(); |
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return routes; |
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} |
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public List<FromBuilder> getFromBuilders() throws Exception { |
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checkInitialized(); |
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return fromBuilders; |
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} |
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public void addFromBuilder(FromBuilder answer) { |
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fromBuilders.add(answer); |
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} |
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protected void checkInitialized() throws Exception { |
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if (initalized.compareAndSet(false, true)) { |
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configure(); |
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populateRoutes(routes); |
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} |
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} |
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protected void populateRoutes(List<Route> routes) throws Exception { |
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for (FromBuilder builder : fromBuilders) { |
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Route route = builder.createRoute(); |
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routes.add(route); |
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} |
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} |
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protected CamelContext createContainer() { |
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return new DefaultCamelContext(); |
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} |
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} |