Java tutorial
/* * ==================================================================== * * This code is subject to the freebxml License, Version 1.1 * * Copyright (c) 2001 - 2003 freebxml.org. All rights reserved. * * $Header: /cvsroot/ebxmlrr/omar/src/java/org/freebxml/omar/server/persistence/rdb/ServiceBindingDAO.java,v 1.29 2006/08/24 20:42:29 farrukh_najmi Exp $ * ==================================================================== */ package org.freebxml.omar.server.persistence.rdb; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import javax.xml.bind.JAXBException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import javax.xml.registry.RegistryException; import org.freebxml.omar.common.exceptions.UnresolvedURLsException; import org.freebxml.omar.server.common.RegistryProperties; import org.freebxml.omar.server.common.ServerRequestContext; import org.freebxml.omar.server.common.Utility; import org.freebxml.omar.server.util.ServerResourceBundle; import org.oasis.ebxml.registry.bindings.rim.IdentifiableType; import org.oasis.ebxml.registry.bindings.rim.ObjectRef; import org.oasis.ebxml.registry.bindings.rim.RegistryObjectType; import org.oasis.ebxml.registry.bindings.rim.ServiceBinding; import org.oasis.ebxml.registry.bindings.rim.ServiceBindingType; import org.oasis.ebxml.registry.bindings.rim.SpecificationLink; /** * Maps to a BindingTemplate in UDDI. * * @see <{Concept}> * @author Farrukh S. Najmi * @author Kathy Walsh * @author Adrian Chong */ class ServiceBindingDAO extends RegistryObjectDAO { private static final Log log = LogFactory.getLog(ServiceBindingDAO.class); /** * Use this constructor only. */ ServiceBindingDAO(ServerRequestContext context) { super(context); } public static String getTableNameStatic() { return "ServiceBinding"; } public String getTableName() { return getTableNameStatic(); } protected void prepareToInsert(Object object) throws RegistryException { ServiceBindingType ro = (ServiceBindingType) object; super.prepareToInsert(object); validateURI(ro); } protected void prepareToUpdate(Object object) throws RegistryException { ServiceBinding ro = (ServiceBinding) object; super.prepareToUpdate(object); validateURI(ro); } protected void validateURI(ServiceBindingType object) throws RegistryException { // check those ExternalLink with http url String check = RegistryProperties.getInstance() .getProperty("omar.persistence.rdb.ServiceBindingDAO.checkURLs"); if (check.equalsIgnoreCase("true")) { ArrayList objs = new ArrayList(); objs.add(object); List invalidExtLinks = Utility.getInstance().validateURIs(objs); if (invalidExtLinks.size() > 0) { throw new UnresolvedURLsException(invalidExtLinks); } } } protected void deleteComposedObjects(Object object) throws RegistryException { RegistryObjectType ro = (RegistryObjectType) object; super.deleteComposedObjects(ro); SpecificationLinkDAO specLinkDAO = new SpecificationLinkDAO(context); specLinkDAO.setParent(object); specLinkDAO.deleteByParent(); } protected void insertComposedObjects(Object object) throws RegistryException { RegistryObjectType ro = (RegistryObjectType) object; super.insertComposedObjects(ro); ServiceBindingType serviceBinding = (ServiceBindingType) ro; SpecificationLinkDAO specLinkDAO = new SpecificationLinkDAO(context); specLinkDAO.setParent(object); specLinkDAO.insert(serviceBinding.getSpecificationLink()); } /** * Returns the SQL fragment string needed by insert or update statements * within insert or update method of sub-classes. This is done to avoid code * duplication. */ protected String getSQLStatementFragment(Object ro) throws RegistryException { ServiceBindingType serviceBinding = (ServiceBindingType) ro; String stmtFragment = null; String serviceId = serviceBinding.getService(); if (serviceId == null) { serviceId = ((IdentifiableType) parent).getId(); } if (serviceId == null) { throw new RegistryException(ServerResourceBundle.getInstance().getString( "message.serviceBindingHasNoParentService", new Object[] { serviceBinding.getId() })); } String accessURI = serviceBinding.getAccessURI(); if (accessURI != null) { accessURI = "'" + accessURI + "'"; } String targetBindingId = serviceBinding.getTargetBinding(); if (targetBindingId != null) { targetBindingId = "'" + targetBindingId + "'"; } if (action == DAO_ACTION_INSERT) { stmtFragment = "INSERT INTO ServiceBinding " + super.getSQLStatementFragment(ro) + ", '" + serviceId + "', " + accessURI + ", " + targetBindingId + " ) "; } else if (action == DAO_ACTION_UPDATE) { stmtFragment = "UPDATE ServiceBinding SET " + super.getSQLStatementFragment(ro) + ", service='" + serviceId + "', accessURI=" + accessURI + ", targetBinding=" + targetBindingId + " WHERE id = '" + ((RegistryObjectType) ro).getId() + "' "; } else if (action == DAO_ACTION_DELETE) { stmtFragment = super.getSQLStatementFragment(ro); } return stmtFragment; } protected String checkServiceBindingReferences(String serviceBindingId) throws RegistryException { String referencingServiceBindingId = null; PreparedStatement stmt = null; try { String sql = "SELECT id FROM ServiceBinding WHERE targetBinding=? AND targetBinding IS NOT NULL"; stmt = context.getConnection().prepareStatement(sql); stmt.setString(1, serviceBindingId); log.trace("SQL = " + sql); // HIEOS/BHT: (DEBUG) ResultSet rs = stmt.executeQuery(); if (rs.next()) { referencingServiceBindingId = rs.getString(1); } return referencingServiceBindingId; } catch (SQLException e) { throw new RegistryException(e); } finally { closeStatement(stmt); } } /* * Gets the column name that is foreign key ref into parent table. * Must be overridden by derived class if it is not 'parent' */ protected String getParentAttribute() { return "service"; } protected void loadObject(Object obj, ResultSet rs) throws RegistryException { if (!(obj instanceof ServiceBinding)) { throw new RegistryException(ServerResourceBundle.getInstance() .getString("message.ServiceBindingExpected", new Object[] { obj })); } ServiceBinding serviceBinding = (ServiceBinding) obj; super.loadObject(serviceBinding, rs); String accessUri = null; try { accessUri = rs.getString("accessuri"); serviceBinding.setAccessURI(accessUri); String targetBindingId = rs.getString("targetBinding"); if (targetBindingId != null) { ObjectRef targetBinding = bu.rimFac.createObjectRef(); context.getObjectRefs().add(targetBinding); targetBinding.setId(targetBindingId); serviceBinding.setTargetBinding(targetBindingId); } String serviceId = rs.getString("service"); if (serviceId != null) { ObjectRef service = bu.rimFac.createObjectRef(); context.getObjectRefs().add(service); service.setId(serviceId); serviceBinding.setService(serviceId); } } catch (SQLException e) { log.error(ServerResourceBundle.getInstance().getString("message.CaughtException1"), e); throw new RegistryException(e); } catch (JAXBException j) { log.error(ServerResourceBundle.getInstance().getString("message.CaughtException1"), j); throw new RegistryException(j); } boolean returnComposedObjects = context.getResponseOption().isReturnComposedObjects(); if (returnComposedObjects) { SpecificationLinkDAO specificationLinkDAO = new SpecificationLinkDAO(context); specificationLinkDAO.setParent(serviceBinding); List specLinks = specificationLinkDAO.getByParent(); Iterator iter = specLinks.iterator(); while (iter.hasNext()) { SpecificationLink sl = (SpecificationLink) iter.next(); serviceBinding.getSpecificationLink().add(sl); } } } /** * Creates an unitialized binding object for the type supported by this DAO. */ Object createObject() throws JAXBException { ServiceBinding obj = bu.rimFac.createServiceBinding(); return obj; } }