/*
* Copyright 2016-2017 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
*
* 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.springframework.integration.file.config;
import org.w3c.dom.Element;
import org.springframework.beans.BeanMetadataElement;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.integration.config.xml.AbstractPollingInboundChannelAdapterParser;
import org.springframework.integration.config.xml.IntegrationNamespaceUtils;
import org.springframework.integration.core.MessageSource;
import org.springframework.integration.file.filters.AbstractPersistentAcceptOnceFileListFilter;
import org.springframework.integration.file.filters.FileListFilter;
import org.springframework.integration.file.remote.RemoteFileOperations;
import org.springframework.util.StringUtils;
/**
* Abstract base class for parsing remote file streaming inbound channel adapters.
*
* @author Gary Russell
* @author Artem Bilan
*
* @since 4.3
*/
public abstract class AbstractRemoteFileStreamingInboundChannelAdapterParser
extends AbstractPollingInboundChannelAdapterParser {
@Override
protected final BeanMetadataElement parseSource(Element element, ParserContext parserContext) {
BeanDefinition templateDefinition = FileParserUtils.parseRemoteFileTemplate(element, parserContext, false,
getTemplateClass());
BeanDefinitionBuilder messageSourceBuilder =
BeanDefinitionBuilder.genericBeanDefinition(getMessageSourceClass());
messageSourceBuilder.addConstructorArgValue(templateDefinition);
BeanDefinition expressionDef = IntegrationNamespaceUtils.createExpressionDefinitionFromValueOrExpression(
"remote-directory", "remote-directory-expression", parserContext, element, false);
if (expressionDef != null) {
messageSourceBuilder.addPropertyValue("remoteDirectoryExpression", expressionDef);
}
String remoteFileSeparator = element.getAttribute("remote-file-separator");
messageSourceBuilder.addPropertyValue("remoteFileSeparator", remoteFileSeparator);
FileParserUtils.configureFilter(messageSourceBuilder, element, parserContext,
getSimplePatternFileListFilterClass(), getRegexPatternFileListFilterClass(), getPersistentAcceptOnceFileListFilterClass());
String comparator = element.getAttribute("comparator");
if (StringUtils.hasText(comparator)) {
messageSourceBuilder.addConstructorArgReference(comparator);
}
IntegrationNamespaceUtils.setValueIfAttributeDefined(messageSourceBuilder, element, "max-fetch-size");
return messageSourceBuilder.getBeanDefinition();
}
protected abstract Class<? extends RemoteFileOperations<?>> getTemplateClass();
protected abstract Class<? extends MessageSource<?>> getMessageSourceClass();
protected abstract Class<? extends FileListFilter<?>> getSimplePatternFileListFilterClass();
protected abstract Class<? extends FileListFilter<?>> getRegexPatternFileListFilterClass();
protected abstract Class<? extends AbstractPersistentAcceptOnceFileListFilter<?>> getPersistentAcceptOnceFileListFilterClass();
}