| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.spi; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.NamedNode; |
| import org.apache.camel.Processor; |
| import org.apache.camel.Route; |
| |
| /** |
| * A factory to create {@link Processor} based on the {@link org.apache.camel.model.ProcessorDefinition definition}. |
| * <p/> |
| * This allows you to implement a custom factory in which you can control the creation of the processors. It also allows |
| * you to manipulate the {@link org.apache.camel.model.ProcessorDefinition definition}s for example to configure or |
| * change options. Its also possible to add new steps in the route by adding outputs to |
| * {@link org.apache.camel.model.ProcessorDefinition definition}s. |
| * <p/> |
| * <b>Important:</b> A custom ProcessorFactory should extend the default implementation |
| * <tt>org.apache.camel.processor.DefaultProcessorFactory</tt> and in the overridden methods, super should be called to |
| * let the default implementation create the processor when custom processors is not created. |
| */ |
| public interface ProcessorFactory { |
| |
| /** |
| * Service factory key. |
| */ |
| String FACTORY = "processor-factory"; |
| |
| /** |
| * Creates the child processor. |
| * <p/> |
| * The child processor is an output from the given definition, for example the sub route in a splitter EIP. |
| * |
| * @param route the route context |
| * @param definition the definition which represents the processor |
| * @param mandatory whether or not the child is mandatory |
| * @return the created processor, or <tt>null</tt> to let the default implementation in Camel create the |
| * processor. |
| * @throws Exception can be thrown if error creating the processor |
| */ |
| Processor createChildProcessor(Route route, NamedNode definition, boolean mandatory) throws Exception; |
| |
| /** |
| * Creates the processor. |
| * |
| * @param route the route context |
| * @param definition the definition which represents the processor |
| * @return the created processor, or <tt>null</tt> to let the default implementation in Camel create the |
| * processor. |
| * @throws Exception can be thrown if error creating the processor |
| */ |
| Processor createProcessor(Route route, NamedNode definition) throws Exception; |
| |
| /** |
| * Creates a processor by the name of the definition. This should only be used in some special situations where the |
| * processor is used internally by Camel itself and some component such as camel-cloud, camel-seda. |
| * |
| * @param camelContext the camel context |
| * @param definitionName the name of the definition that represents the processor |
| * @param args arguments for creating the processor (optimized to use fixed order of parameters) |
| * @return the created processor, or <tt>null</tt> if this situation is not yet implemented. |
| * @throws Exception can be thrown if error creating the processor |
| */ |
| Processor createProcessor(CamelContext camelContext, String definitionName, Object[] args) throws Exception; |
| |
| } |