Java tutorial
/* * Copyright 2002-2019 the original author or authors. * * Licensed 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 * * https://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.springframework.integration.scheduling; import java.util.List; import java.util.concurrent.Executor; import org.aopalliance.aop.Advice; import org.springframework.beans.factory.BeanFactory; import org.springframework.integration.transaction.TransactionSynchronizationFactory; import org.springframework.scheduling.Trigger; import org.springframework.util.Assert; import org.springframework.util.ErrorHandler; /** * @author Mark Fisher * @author Oleg Zhurakousky * @author Gary Russell */ public class PollerMetadata { public static final int MAX_MESSAGES_UNBOUNDED = Integer.MIN_VALUE; public static final String DEFAULT_POLLER_METADATA_BEAN_NAME = "org.springframework.integration.context.defaultPollerMetadata"; /** * A convenient short alias for the global default poller bean name. */ public static final String DEFAULT_POLLER = DEFAULT_POLLER_METADATA_BEAN_NAME; private volatile Trigger trigger; private volatile long maxMessagesPerPoll = MAX_MESSAGES_UNBOUNDED; private volatile long receiveTimeout = 1000; private volatile ErrorHandler errorHandler; private volatile List<Advice> adviceChain; private volatile Executor taskExecutor; private volatile long sendTimeout; private volatile TransactionSynchronizationFactory transactionSynchronizationFactory; public void setTransactionSynchronizationFactory( TransactionSynchronizationFactory transactionSynchronizationFactory) { Assert.notNull(transactionSynchronizationFactory, "'transactionSynchronizationFactory' must not be null"); this.transactionSynchronizationFactory = transactionSynchronizationFactory; } public TransactionSynchronizationFactory getTransactionSynchronizationFactory() { return this.transactionSynchronizationFactory; } public void setTrigger(Trigger trigger) { this.trigger = trigger; } public Trigger getTrigger() { return this.trigger; } public ErrorHandler getErrorHandler() { return this.errorHandler; } public void setErrorHandler(ErrorHandler errorHandler) { this.errorHandler = errorHandler; } /** * Set the maximum number of messages to receive for each poll. * A non-positive value indicates that polling should repeat as long * as non-null messages are being received and successfully sent. * * <p>The default is unbounded. * * @param maxMessagesPerPoll The maxMessagesPerPoll to set. * * @see #MAX_MESSAGES_UNBOUNDED */ public void setMaxMessagesPerPoll(long maxMessagesPerPoll) { this.maxMessagesPerPoll = maxMessagesPerPoll; } public long getMaxMessagesPerPoll() { return this.maxMessagesPerPoll; } public void setReceiveTimeout(long receiveTimeout) { this.receiveTimeout = receiveTimeout; } public long getReceiveTimeout() { return this.receiveTimeout; } public void setAdviceChain(List<Advice> adviceChain) { this.adviceChain = adviceChain; } public List<Advice> getAdviceChain() { return this.adviceChain; } public void setTaskExecutor(Executor taskExecutor) { this.taskExecutor = taskExecutor; } public Executor getTaskExecutor() { return this.taskExecutor; } public long getSendTimeout() { return this.sendTimeout; } public void setSendTimeout(long sendTimeout) { this.sendTimeout = sendTimeout; } /** * Return the default {@link PollerMetadata} bean if available. * @param beanFactory BeanFactory for lookup, must not be null. * @return The poller metadata. */ public static PollerMetadata getDefaultPollerMetadata(BeanFactory beanFactory) { Assert.notNull(beanFactory, "BeanFactory must not be null"); if (!beanFactory.containsBean(DEFAULT_POLLER_METADATA_BEAN_NAME)) { return null; } return beanFactory.getBean(DEFAULT_POLLER_METADATA_BEAN_NAME, PollerMetadata.class); } }