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HSQLDB example source code file (TransferHelper.java)
The HSQLDB TransferHelper.java source code/* Copyright (c) 2001-2008, The HSQL Development Group * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the HSQL Development Group nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG, * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.hsqldb.util; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import java.util.Hashtable; /** * Base class for conversion from a different databases * * @author Bob Preston (sqlbob@users dot sourceforge.net) * @version 1.7.0 */ class TransferHelper { protected TransferDb db; protected Traceable tracer; protected String sSchema; protected JDBCTypes JDBCT; private String quote; TransferHelper() { db = null; tracer = null; quote = "\'"; JDBCT = new JDBCTypes(); } TransferHelper(TransferDb database, Traceable t, String q) { db = database; tracer = t; quote = q; JDBCT = new JDBCTypes(); } void set(TransferDb database, Traceable t, String q) { db = database; tracer = t; quote = q; } String formatIdentifier(String id) { if (id == null) { return id; } if (id.equals("")) { return id; } if (!id.toLowerCase().equals(id) && !id.toUpperCase().equals(id)) { return (quote + id + quote); } if (!Character.isLetter(id.charAt(0)) || (id.indexOf(' ') != -1)) { return (quote + id + quote); } return id; } void setSchema(String _Schema) { sSchema = _Schema; } String formatName(String t) { String Name = ""; if ((sSchema != null) && (sSchema.length() > 0)) { Name = sSchema + "."; } Name += formatIdentifier(t); return Name; } int convertFromType(int type) { return (type); } int convertToType(int type) { return (type); } Hashtable getSupportedTypes() { Hashtable hTypes = new Hashtable(); if (db != null) { try { ResultSet result = db.meta.getTypeInfo(); while (result.next()) { Integer intobj = new Integer(result.getShort(2)); if (hTypes.get(intobj) == null) { try { int typeNumber = result.getShort(2); hTypes.put(intobj, JDBCT.toString(typeNumber)); } catch (Exception e) {} } } result.close(); } catch (SQLException e) {} } if (hTypes.isEmpty()) { hTypes = JDBCT.getHashtable(); } return hTypes; } String fixupColumnDefRead(TransferTable t, ResultSetMetaData meta, String columnType, ResultSet columnDesc, int columnIndex) throws SQLException { return (columnType); } String fixupColumnDefWrite(TransferTable t, ResultSetMetaData meta, String columnType, ResultSet columnDesc, int columnIndex) throws SQLException { return (columnType); } boolean needTransferTransaction() { return (false); } Object convertColumnValue(Object value, int column, int type) { return (value); } void beginDataTransfer() {} void endDataTransfer() {} String fixupColumnDefRead(String aTableName, ResultSetMetaData meta, String columnType, ResultSet columnDesc, int columnIndex) throws SQLException { return columnType; } String fixupColumnDefWrite(String aTableName, ResultSetMetaData meta, String columnType, ResultSet columnDesc, int columnIndex) throws SQLException { return columnType; } } Other HSQLDB examples (source code examples)Here is a short list of links related to this HSQLDB TransferHelper.java source code file: |
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