/*
* Copyright 2002-2010 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.jdbc.config;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseFactoryBean;
import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
import org.springframework.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;
/**
* {@link org.springframework.beans.factory.xml.BeanDefinitionParser} that parses {@code embedded-database} element and
* creates a {@link BeanDefinition} for {@link EmbeddedDatabaseFactoryBean}. Picks up nested {@code script} elements and
* configures a {@link ResourceDatabasePopulator} for them.
*
* @author Oliver Gierke
* @since 3.0
*/
class EmbeddedDatabaseBeanDefinitionParser extends AbstractBeanDefinitionParser {
private static final String NAME_PROPERTY = "databaseName";
@Override
protected AbstractBeanDefinition parseInternal(Element element, ParserContext context) {
BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(EmbeddedDatabaseFactoryBean.class);
setDatabaseType(element, builder);
setDatabasePopulator(element, context, builder);
useIdAsDatabaseNameIfGiven(element, builder);
return getSourcedBeanDefinition(builder, element, context);
}
private void useIdAsDatabaseNameIfGiven(Element element, BeanDefinitionBuilder builder) {
String id = element.getAttribute(ID_ATTRIBUTE);
if (StringUtils.hasText(id)) {
builder.addPropertyValue(NAME_PROPERTY, id);
}
}
private void setDatabaseType(Element element, BeanDefinitionBuilder builder) {
String type = element.getAttribute("type");
if (StringUtils.hasText(type)) {
builder.addPropertyValue("databaseType", type);
}
}
private void setDatabasePopulator(Element element, ParserContext context, BeanDefinitionBuilder builder) {
List<Element> scripts = DomUtils.getChildElementsByTagName(element, "script");
if (scripts.size() > 0) {
builder.addPropertyValue("databasePopulator", createDatabasePopulator(scripts, context));
}
}
private BeanDefinition createDatabasePopulator(List<Element> scripts, ParserContext context) {
BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(ResourceDatabasePopulator.class);
List<String> locations = new ArrayList<String>();
for (Element scriptElement : scripts) {
locations.add(scriptElement.getAttribute("location"));
}
// Use a factory bean for the resources so they can be given an order if a pattern is used
BeanDefinitionBuilder resourcesFactory = BeanDefinitionBuilder
.genericBeanDefinition(SortedResourcesFactoryBean.class);
resourcesFactory.addConstructorArgValue(locations);
builder.addPropertyValue("scripts", resourcesFactory.getBeanDefinition());
return builder.getBeanDefinition();
}
private AbstractBeanDefinition getSourcedBeanDefinition(
BeanDefinitionBuilder builder, Element source, ParserContext context) {
AbstractBeanDefinition definition = builder.getBeanDefinition();
definition.setSource(context.extractSource(source));
return definition;
}
}
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