Java tutorial
/* * Copyright 2008-2010 Xebia and 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 fr.xebia.management.config; import java.sql.Connection; 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.util.xml.DomUtils; import org.w3c.dom.Element; import fr.xebia.springframework.jdbc.ManagedBasicDataSource; public class ManagedBasicDataSourceBeanDefinitionParser extends AbstractBeanDefinitionParser { @Override protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) { BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(ManagedBasicDataSource.class); builder.setRole(BeanDefinition.ROLE_APPLICATION); builder.getRawBeanDefinition().setSource(parserContext.extractSource(element)); fillBuilderWithAttributeIfExists(builder, element, "accessToUnderlyingConnectionAllowed", "access-to-underlying-connection-allowed", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "connectionInitSqls", "connection-init-sqls", java.util.Collection.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "connectionProperties", "connection-properties", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "defaultAutoCommit", "default-auto-commit", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "defaultCatalog", "default-catalog", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "defaultReadOnly", "default-read-only", boolean.class, parserContext); Element defaultTransactionIsolationElement = DomUtils.getChildElementByTagName(element, "default-transaction-isolation"); if (defaultTransactionIsolationElement != null) { int defaultTransactionIsolation; String value = defaultTransactionIsolationElement.getAttribute("value"); if ("NONE".equals(value)) { defaultTransactionIsolation = Connection.TRANSACTION_NONE; } else if ("READ_UNCOMMITTED".equals(value)) { defaultTransactionIsolation = Connection.TRANSACTION_READ_UNCOMMITTED; } else if ("READ_COMMITTED".equals(value)) { defaultTransactionIsolation = Connection.TRANSACTION_READ_COMMITTED; } else if ("REPEATABLE_READ".equals(value)) { defaultTransactionIsolation = Connection.TRANSACTION_REPEATABLE_READ; } else if ("SERIALIZABLE".equals(value)) { defaultTransactionIsolation = Connection.TRANSACTION_SERIALIZABLE; } else { String msg = "Invalid value for '<default-transaction-isolation' value=\"" + value + "\" />'"; parserContext.getReaderContext().fatal(msg, defaultTransactionIsolationElement); throw new IllegalStateException(msg); } builder.addPropertyValue("defaultTransactionIsolation", defaultTransactionIsolation); } fillBuilderWithAttributeIfExists(builder, element, "driverClassName", "driver-class-name", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "initialSize", "initial-size", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "logAbandoned", "log-abandoned", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "maxActive", "max-active", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "maxIdle", "max-idle", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "maxOpenPreparedStatements", "max-open-prepared-statements", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "maxWait", "max-wait", long.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "minEvictableIdleTimeMillis", "min-evictable-idle-time-millis", long.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "minIdle", "min-idle", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "numTestsPerEvictionRun", "num-tests-per-eviction-run", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "password", "password", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "poolPreparedStatements", "pool-prepared-statements", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "removeAbandoned", "remove-abandoned", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "removeAbandonedTimeout", "remove-abandoned-timeout", int.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "testOnBorrow", "test-on-borrow", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "testOnReturn", "test-on-return", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "testWhileIdle", "test-while-idle", boolean.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "timeBetweenEvictionRunsMillis", "time-between-eviction-runs-millis", long.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "url", "url", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "username", "username", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "validationQuery", "validation-query", String.class, parserContext); fillBuilderWithAttributeIfExists(builder, element, "validationQueryTimeout", "validation-query-timeout", int.class, parserContext); builder.setDestroyMethodName("close"); return builder.getBeanDefinition(); } protected void fillBuilderWithAttributeIfExists(BeanDefinitionBuilder builder, Element parentElement, String propertyName, String elementName, Class<?> expectedType, ParserContext parserContext) { Element element = DomUtils.getChildElementByTagName(parentElement, elementName); if (element == null) { // skip } else { String value = element.getAttribute("value"); if (value == null) { String msg = "Sub element '" + elementName + "' is missing attribute '" + "value" + "'"; parserContext.getReaderContext().fatal(msg, parentElement); throw new IllegalStateException(msg); } builder.addPropertyValue(propertyName, value); } } }