Java tutorial
/* * ==================================================================== * This file is part of the ebXML Registry by Icar Cnr v3.2 * ("eRICv32" in the following disclaimer). * * "eRICv32" is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * "eRICv32" is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License Version 3 * along with "eRICv32". If not, see <http://www.gnu.org/licenses/>. * * eRICv32 is a forked, derivative work, based on: * - freebXML Registry, a royalty-free, open source implementation of the ebXML Registry standard, * which was published under the "freebxml License, Version 1.1"; * - ebXML OMAR v3.2 Edition, published under the GNU GPL v3 by S. Krushe & P. Arwanitis. * * All derivative software changes and additions are made under * * Copyright (C) 2013 Ing. Antonio Messina <messina@pa.icar.cnr.it> * * This software consists of voluntary contributions made by many * individuals on behalf of the freebxml Software Foundation. For more * information on the freebxml Software Foundation, please see * "http://www.freebxml.org/". * * This product includes software developed by the Apache Software * Foundation (http://www.apache.org/). * * ==================================================================== */ package it.cnr.icar.eric.server.persistence.rdb; import it.cnr.icar.eric.server.common.ServerRequestContext; import it.cnr.icar.eric.server.util.ServerResourceBundle; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import javax.xml.bind.JAXBException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import javax.xml.registry.RegistryException; import org.oasis.ebxml.registry.bindings.rim.ClassificationSchemeType; import org.oasis.ebxml.registry.bindings.rim.RegistryObjectType; class ClassificationSchemeDAO extends RegistryObjectDAO { private static final Log log = LogFactory.getLog(ClassificationSchemeDAO.class); /** * Use this constructor only. */ ClassificationSchemeDAO(ServerRequestContext context) { super(context); } public static String getTableNameStatic() { return "ClassScheme"; } public String getTableName() { return getTableNameStatic(); } protected void deleteComposedObjects(Object object) throws RegistryException { ClassificationSchemeType ro = (ClassificationSchemeType) object; super.deleteComposedObjects(ro); ArrayList<String> parentIds = new ArrayList<String>(); parentIds.add(ro.getId()); } protected void insertComposedObjects(Object object) throws RegistryException { super.insertComposedObjects(object); ClassificationSchemeType scheme = (ClassificationSchemeType) object; ClassificationNodeDAO classificationNodeDAO = new ClassificationNodeDAO(context); classificationNodeDAO.setParent(scheme); classificationNodeDAO.insert(scheme.getClassificationNode()); } /** * 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 { ClassificationSchemeType scheme = (ClassificationSchemeType) ro; String stmtFragment = null; String isInternal = "'F'"; if (scheme.isIsInternal()) { isInternal = "'T'"; } String nodeType = null; if (scheme.getNodeType() != null) nodeType = scheme.getNodeType().toString(); if (nodeType == null) { nodeType = "UniqueCode"; } if (action == DAO_ACTION_INSERT) { stmtFragment = "INSERT INTO ClassScheme " + super.getSQLStatementFragment(ro) + ", " + isInternal + ", '" + nodeType + "' ) "; } else if (action == DAO_ACTION_UPDATE) { stmtFragment = "UPDATE ClassScheme SET " + super.getSQLStatementFragment(ro) + ", isInternal=" + isInternal + ", nodeType='" + nodeType + "' WHERE id = '" + ((RegistryObjectType) ro).getId() + "' "; } else if (action == DAO_ACTION_DELETE) { stmtFragment = super.getSQLStatementFragment(ro); } return stmtFragment; } // Should we make index on ClassifcationScheme in Classification???? protected String checkClassificationReferences(java.sql.Connection conn, String schemeId) throws RegistryException { String classId = null; PreparedStatement stmt = null; try { String sql = "SELECT id FROM Classification WHERE " + "classificationScheme=? AND classificationScheme IS NOT NULL"; stmt = context.getConnection().prepareStatement(sql); stmt.setString(1, schemeId); ResultSet rs = stmt.executeQuery(); if (rs.next()) { classId = rs.getString(1); } return classId; } catch (SQLException e) { throw new RegistryException(e); } finally { closeStatement(stmt); } } // Should we make index on parent in ClassificationNode???? protected String checkClassificationNodeReferences(java.sql.Connection conn, String schemeId) throws RegistryException { String nodeId = null; PreparedStatement stmt = null; try { String sql = "SELECT id FROM ClassificationNode WHERE parent=? AND parent IS NOT NULL"; stmt = context.getConnection().prepareStatement(sql); stmt.setString(1, schemeId); ResultSet rs = stmt.executeQuery(); if (rs.next()) { nodeId = rs.getString(1); } return nodeId; } catch (SQLException e) { throw new RegistryException(e); } finally { closeStatement(stmt); } } protected void loadObject(Object obj, ResultSet rs) throws RegistryException { try { if (!(obj instanceof ClassificationSchemeType)) { throw new RegistryException(ServerResourceBundle.getInstance() .getString("message.ClassficationSchemeExpected", new Object[] { obj })); } ClassificationSchemeType ebClassificationSchemeType = (ClassificationSchemeType) obj; super.loadObject(ebClassificationSchemeType, rs); String isInternal = rs.getString("isInternal"); if (isInternal.equals("T")) { ebClassificationSchemeType.setIsInternal(true); } else { ebClassificationSchemeType.setIsInternal(false); } String nodeType = rs.getString("nodeType"); ebClassificationSchemeType.setNodeType(nodeType); } catch (SQLException e) { log.error(ServerResourceBundle.getInstance().getString("message.CaughtException1"), e); throw new RegistryException(e); } } /** * Creates an unitialized binding object for the type supported by this DAO. */ Object createObject() throws JAXBException { ClassificationSchemeType ebClassificationSchemeType = bu.rimFac.createClassificationSchemeType(); return ebClassificationSchemeType; } }