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// $Id$
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/**
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* Copyright (C) 2009 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.database.update;
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import java.sql.Types;
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import org.apache.log4j.Logger;
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import eu.etaxonomy.cdm.common.monitor.IProgressMonitor;
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import eu.etaxonomy.cdm.database.DatabaseTypeEnum;
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import eu.etaxonomy.cdm.database.ICdmDataSource;
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/**
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* @author a.mueller
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* @date 16.09.2010
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*
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*/
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public class ColumnAdder extends AuditedSchemaUpdaterStepBase<ColumnAdder> implements ISchemaUpdaterStep {
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private static final Logger logger = Logger.getLogger(ColumnAdder.class);
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private String newColumnName;
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private String columnType;
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private Object defaultValue;
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private boolean isNotNull;
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private String referencedTable;
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public static final ColumnAdder NewIntegerInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable, boolean notNull, String referencedTable){
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return new ColumnAdder(stepName, tableName, newColumnName, "int", includeAudTable, null, notNull, referencedTable);
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}
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public static final ColumnAdder NewIntegerInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable, Integer defaultValue, boolean notNull){
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return new ColumnAdder(stepName, tableName, newColumnName, "int", includeAudTable, defaultValue, notNull, null);
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}
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public static final ColumnAdder NewTinyIntegerInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable, boolean notNull){
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return new ColumnAdder(stepName, tableName, newColumnName, "tinyint", includeAudTable, null, notNull, null);
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}
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public static final ColumnAdder NewDoubleInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable, boolean notNull){
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return new ColumnAdder(stepName, tableName, newColumnName, "double", includeAudTable, null, notNull, null);
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}
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public static final ColumnAdder NewBooleanInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable, Boolean defaultValue){
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return new ColumnAdder(stepName, tableName, newColumnName, "bit", includeAudTable, defaultValue, false, null);
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}
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public static final ColumnAdder NewStringInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable){
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return new ColumnAdder(stepName, tableName, newColumnName, "nvarchar(255)", includeAudTable, null, false, null);
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}
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public static final ColumnAdder NewStringInstance(String stepName, String tableName, String newColumnName, int length, boolean includeAudTable){
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return new ColumnAdder(stepName, tableName, newColumnName, "nvarchar("+length+")", includeAudTable, null, false, null);
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}
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public static final ColumnAdder NewClobInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable){
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return new ColumnAdder(stepName, tableName, newColumnName, "clob", includeAudTable, null, false, null);
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}
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public static final ColumnAdder NewDateTimeInstance(String stepName, String tableName, String newColumnName, boolean includeAudTable){
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return new ColumnAdder(stepName, tableName, newColumnName, "datetime", includeAudTable, null, false, null);
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}
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protected ColumnAdder(String stepName, String tableName, String newColumnName, String columnType, boolean includeAudTable, Object defaultValue, boolean notNull, String referencedTable) {
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super(stepName);
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this.tableName = tableName;
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this.newColumnName = newColumnName;
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this.columnType = columnType;
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this.includeAudTable = includeAudTable;
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this.defaultValue = defaultValue;
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this.isNotNull = notNull;
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this.referencedTable = referencedTable;
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}
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public ColumnAdder setNotNull(boolean isNotNull) {
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this.isNotNull = isNotNull;
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return this;
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}
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@Override
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protected boolean invokeOnTable(String tableName, ICdmDataSource datasource, IProgressMonitor monitor, CaseType caseType) {
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boolean result = true;
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try {
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String updateQuery = getUpdateQueryString(tableName, datasource, monitor);
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datasource.executeUpdate(updateQuery);
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if (defaultValue instanceof Boolean){
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updateQuery = "UPDATE @tableName SET @columnName = " + (defaultValue == null ? "null" : getBoolean((Boolean) defaultValue, datasource));
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updateQuery = updateQuery.replace("@tableName", tableName);
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updateQuery = updateQuery.replace("@columnName", newColumnName);
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datasource.executeUpdate(updateQuery);
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}
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if (referencedTable != null){
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result &= TableCreator.makeForeignKey(tableName, datasource, monitor, newColumnName, referencedTable, caseType);
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}
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return result;
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} catch ( Exception e) {
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monitor.warning(e.getMessage(), e);
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logger.error(e);
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return false;
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}
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}
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/**
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* Returns the update query string. tableName must already be cased correctly. See {@link CaseType}.
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* @param tableName correctly cased table name
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* @param datasource data source
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* @param monitor monitor
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* @return the query string
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* @throws DatabaseTypeNotSupportedException
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*/
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public String getUpdateQueryString(String tableName, ICdmDataSource datasource, IProgressMonitor monitor) throws DatabaseTypeNotSupportedException {
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String updateQuery;
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DatabaseTypeEnum type = datasource.getDatabaseType();
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String databaseColumnType = getDatabaseColumnType(datasource, this.columnType);
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if (type.equals(DatabaseTypeEnum.SqlServer2005)){
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//MySQL allows both syntaxes
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updateQuery = "ALTER TABLE @tableName ADD @columnName @columnType";
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}else if (type.equals(DatabaseTypeEnum.H2) || type.equals(DatabaseTypeEnum.PostgreSQL) || type.equals(DatabaseTypeEnum.MySQL)){
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updateQuery = "ALTER TABLE @tableName @addSeparator @columnName @columnType";
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}else{
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updateQuery = null;
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String warning = "Update step '" + this.getStepName() + "' is not supported by " + type.getName();
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monitor.warning(warning);
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throw new DatabaseTypeNotSupportedException(warning);
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}
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if (isNotNull){
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updateQuery += " NOT NULL";
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}
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updateQuery = updateQuery.replace("@tableName", tableName);
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updateQuery = updateQuery.replace("@columnName", newColumnName);
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updateQuery = updateQuery.replace("@columnType", databaseColumnType);
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updateQuery = updateQuery.replace("@addSeparator", getAddColumnSeperator(datasource));
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return updateQuery;
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}
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protected static String getDatabaseColumnType(ICdmDataSource datasource, String columnType) {
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String result = columnType;
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DatabaseTypeEnum dbType = datasource.getDatabaseType();
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//nvarchar
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if (dbType.equals(DatabaseTypeEnum.PostgreSQL)){ //TODO use PostgeSQL82 Dialect infos
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result = result.replace("nvarchar", "varchar");
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result = result.replace("double", "float8");
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result = result.replace("bit", DatabaseTypeEnum.PostgreSQL.getHibernateDialect().getTypeName(Types.BIT));
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result = result.replace("datetime", DatabaseTypeEnum.PostgreSQL.getHibernateDialect().getTypeName(Types.TIMESTAMP));
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result = result.replace("tinyint", DatabaseTypeEnum.PostgreSQL.getHibernateDialect().getTypeName(Types.TINYINT));
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}
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//CLOB
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if (columnType.equalsIgnoreCase("clob")){
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//TODO use hibernate dialects
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if (dbType.equals(DatabaseTypeEnum.MySQL)){
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result = "longtext";
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}else if (dbType.equals(DatabaseTypeEnum.H2)){
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result = "CLOB"; //or NVARCHAR
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}else if (dbType.equals(DatabaseTypeEnum.PostgreSQL)){
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result = "text";
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}else if (dbType.equals(DatabaseTypeEnum.SqlServer2005)){
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result = "NVARCHAR(MAX)";
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}
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}
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return result;
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}
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/**
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* Returns the sql keywords for adding a column. This is usually 'ADD' or 'ADD COLUMN'
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* @param datasource
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* @return
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* @throws DatabaseTypeNotSupportedException
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*/
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public static String getAddColumnSeperator(ICdmDataSource datasource) throws DatabaseTypeNotSupportedException {
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DatabaseTypeEnum type = datasource.getDatabaseType();
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if (type.equals(DatabaseTypeEnum.SqlServer2005)){
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return "ADD ";
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}else if (type.equals(DatabaseTypeEnum.H2) || type.equals(DatabaseTypeEnum.PostgreSQL) || type.equals(DatabaseTypeEnum.MySQL)){
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return "ADD COLUMN ";
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}else{
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throw new DatabaseTypeNotSupportedException(datasource.getName());
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}
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}
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public String getReferencedTable() {
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return referencedTable;
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}
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public String getNewColumnName() {
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return newColumnName;
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}
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}
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