| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.impl.jdbc.EmbedResultSet20 |
| 4 | |
| 5 | Copyright 1998, 2005 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.impl.jdbc; |
| 22 | |
| 23 | import org.apache.derby.iapi.reference.JDBC20Translation; |
| 24 | import org.apache.derby.iapi.reference.SQLState; |
| 25 | |
| 26 | import org.apache.derby.iapi.sql.ResultSet; |
| 27 | |
| 28 | import org.apache.derby.iapi.sql.execute.ExecCursorTableReference; |
| 29 | |
| 30 | import org.apache.derby.iapi.error.StandardException; |
| 31 | import org.apache.derby.impl.jdbc.Util; |
| 32 | import org.apache.derby.iapi.sql.conn.LanguageConnectionContext; |
| 33 | import org.apache.derby.iapi.sql.conn.StatementContext; |
| 34 | |
| 35 | import org.apache.derby.iapi.types.DataValueDescriptor; |
| 36 | |
| 37 | import java.sql.Statement; |
| 38 | import java.sql.SQLException; |
| 39 | import java.sql.Types; |
| 40 | |
| 41 | /* ---- New jdbc 2.0 types ----- */ |
| 42 | import java.sql.Array; |
| 43 | import java.sql.Blob; |
| 44 | import java.sql.Clob; |
| 45 | import java.sql.Ref; |
| 46 | |
| 47 | import java.math.BigDecimal; |
| 48 | import java.net.URL; |
| 49 | |
| 50 | /** |
| 51 | * This class extends the EmbedResultSet class in order to support new |
| 52 | * methods and classes that come with JDBC 2.0. |
| 53 | <P><B>Supports</B> |
| 54 | <UL> |
| 55 | <LI> JDBC 2.0/2.1 |
| 56 | <LI> JDBC 3.0 |
| 57 | </UL> |
| 58 | * @see org.apache.derby.impl.jdbc.EmbedResultSet |
| 59 | * |
| 60 | * @author francois |
| 61 | */ |
| 62 | |
| 63 | public class EmbedResultSet20 |
| 64 | extends org.apache.derby.impl.jdbc.EmbedResultSet { |
| 65 | |
| 66 | ////////////////////////////////////////////////////////////// |
| 67 | // |
| 68 | // CONSTRUCTORS |
| 69 | // |
| 70 | ////////////////////////////////////////////////////////////// |
| 71 | |
| 72 | /** |
| 73 | * This class provides the glue between the Derby |
| 74 | * resultset and the JDBC resultset, mapping calls-to-calls. |
| 75 | */ |
| 76 | public EmbedResultSet20(org.apache.derby.impl.jdbc.EmbedConnection conn, |
| 77 | ResultSet resultsToWrap, |
| 78 | boolean forMetaData, |
| 79 | org.apache.derby.impl.jdbc.EmbedStatement stmt, |
| 80 | boolean isAtomic) |
| 81 | throws SQLException { |
| 82 | super(conn, resultsToWrap, forMetaData, stmt, isAtomic); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | /* |
| 87 | ** Methods using java.math.BigDecimal, not supported in JSR169 |
| 88 | */ |
| 89 | /** |
| 90 | * Get the value of a column in the current row as a java.lang.BigDecimal object. |
| 91 | * |
| 92 | * @param columnIndex the first column is 1, the second is 2, ... |
| 93 | * @param scale the number of digits to the right of the decimal |
| 94 | * @return the column value; if the value is SQL NULL, the result is null |
| 95 | * @exception SQLException thrown on failure. |
| 96 | */ |
| 97 | public final BigDecimal getBigDecimal(int columnIndex, int scale) |
| 98 | throws SQLException { |
| 99 | |
| 100 | BigDecimal ret = getBigDecimal(columnIndex); |
| 101 | if (ret != null) { |
| 102 | return ret.setScale(scale, BigDecimal.ROUND_HALF_DOWN); |
| 103 | } |
| 104 | return null; |
| 105 | } |
| 106 | |
| 107 | public final BigDecimal getBigDecimal(int columnIndex) |
| 108 | throws SQLException { |
| 109 | checkIfClosed("getBigDecimal"); |
| 110 | try { |
| 111 | |
| 112 | DataValueDescriptor dvd = getColumn(columnIndex); |
| 113 | |
| 114 | if (wasNull = dvd.isNull()) |
| 115 | return null; |
| 116 | |
| 117 | return org.apache.derby.iapi.types.SQLDecimal.getBigDecimal(dvd); |
| 118 | |
| 119 | } catch (StandardException t) { |
| 120 | throw noStateChangeException(t); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * Get the value of a column in the current row as a java.lang.BigDecimal object. |
| 126 | * |
| 127 | * @param columnName is the SQL name of the column |
| 128 | * @param scale the number of digits to the right of the decimal |
| 129 | * @return the column value; if the value is SQL NULL, the result is null |
| 130 | * @exception SQLException thrown on failure. |
| 131 | */ |
| 132 | public final BigDecimal getBigDecimal(String columnName, int scale) |
| 133 | throws SQLException { |
| 134 | checkIfClosed("getBigDecimal"); |
| 135 | return (getBigDecimal(findColumnName(columnName), scale)); |
| 136 | } |
| 137 | |
| 138 | |
| 139 | /** |
| 140 | * JDBC 2.0 |
| 141 | * |
| 142 | Deprecated in JDBC 2.0, not supported by JCC. |
| 143 | * @exception SQLException thrown on failure. |
| 144 | */ |
| 145 | public final java.io.InputStream getUnicodeStream(int columnIndex) throws SQLException { |
| 146 | throw Util.notImplemented("getUnicodeStream"); |
| 147 | } |
| 148 | /** |
| 149 | Deprecated in JDBC 2.0, not supported by JCC. |
| 150 | * @exception SQLException thrown on failure. |
| 151 | */ |
| 152 | public final java.io.InputStream getUnicodeStream(String columnName) throws SQLException { |
| 153 | throw Util.notImplemented("getUnicodeStream"); |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * JDBC 2.0 |
| 158 | * |
| 159 | * Get the value of a column in the current row as a java.math.BigDecimal |
| 160 | * object. |
| 161 | * |
| 162 | * @exception SQLException Feature not implemented for now. |
| 163 | */ |
| 164 | public final BigDecimal getBigDecimal(String columnName) throws SQLException { |
| 165 | checkIfClosed("getBigDecimal"); |
| 166 | return getBigDecimal(findColumnName(columnName)); |
| 167 | } |
| 168 | |
| 169 | public void updateBigDecimal(int columnIndex, BigDecimal x) |
| 170 | throws SQLException { |
| 171 | try { |
| 172 | getDVDforColumnToBeUpdated(columnIndex, "updateBigDecimal").setBigDecimal(x); |
| 173 | } catch (StandardException t) { |
| 174 | throw noStateChangeException(t); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * JDBC 2.0 |
| 180 | * |
| 181 | * Update a column with an Object value. |
| 182 | * |
| 183 | * The updateXXX() methods are used to update column values in the current |
| 184 | * row, or the insert row. The updateXXX() methods do not update the |
| 185 | * underlying database, instead the updateRow() or insertRow() methods are |
| 186 | * called to update the database. |
| 187 | * |
| 188 | * @param columnIndex |
| 189 | * the first column is 1, the second is 2, ... |
| 190 | * @param x |
| 191 | * the new column value |
| 192 | * @exception SQLException |
| 193 | * if a database-access error occurs |
| 194 | */ |
| 195 | public void updateObject(int columnIndex, Object x) throws SQLException { |
| 196 | //If the Object x is the right datatype, this method will eventually call getDVDforColumnToBeUpdated which will check for |
| 197 | //the read only resultset. But for other datatypes of x, we want to catch if this updateObject is being |
| 198 | //issued against a read only resultset. And that is the reason for call to checksBeforeUpdateOrDelete here. |
| 199 | checksBeforeUpdateOrDelete("updateObject", columnIndex); |
| 200 | int colType = getColumnType(columnIndex); |
| 201 | |
| 202 | if (x instanceof BigDecimal) { |
| 203 | updateBigDecimal(columnIndex, (BigDecimal) x); |
| 204 | return; |
| 205 | } |
| 206 | super.updateObject(columnIndex, x); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * JDBC 2.0 |
| 211 | * |
| 212 | * Update a column with a BigDecimal value. |
| 213 | * |
| 214 | * The updateXXX() methods are used to update column values in the |
| 215 | * current row, or the insert row. The updateXXX() methods do not |
| 216 | * update the underlying database, instead the updateRow() or insertRow() |
| 217 | * methods are called to update the database. |
| 218 | * |
| 219 | * @param columnName the name of the column |
| 220 | * @param x the new column value |
| 221 | * @exception SQLException if a database-access error occurs |
| 222 | */ |
| 223 | public void updateBigDecimal(String columnName, BigDecimal x) |
| 224 | throws SQLException { |
| 225 | checkIfClosed("updateBigDecimal"); |
| 226 | updateBigDecimal(findColumnName(columnName), x); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * JDBC 2.0 |
| 231 | * |
| 232 | * Returns the value of column @i as a Java object. Use the |
| 233 | * param map to determine the class from which to construct data of |
| 234 | * SQL structured and distinct types. |
| 235 | * |
| 236 | * @param columnIndex the first column is 1, the second is 2, ... |
| 237 | * @param map the mapping from SQL type names to Java classes |
| 238 | * @return an object representing the SQL value |
| 239 | * @exception SQLException Feature not implemented for now. |
| 240 | */ |
| 241 | public Object getObject(int columnIndex, java.util.Map map) throws SQLException { |
| 242 | checkIfClosed("getObject"); |
| 243 | if( map == null) |
| 244 | throw Util.generateCsSQLException(SQLState.INVALID_API_PARAMETER,map,"map", |
| 245 | "java.sql.ResultSet.getObject"); |
| 246 | if(!(map.isEmpty())) |
| 247 | throw Util.notImplemented(); |
| 248 | // Map is empty call the normal getObject method. |
| 249 | return getObject(columnIndex); |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * JDBC 2.0 |
| 254 | * |
| 255 | * Get a REF(<structured-type>) column. |
| 256 | * |
| 257 | * @param i the first column is 1, the second is 2, ... |
| 258 | * @return an object representing data of an SQL REF type |
| 259 | * @exception SQLException Feature not implemented for now. |
| 260 | */ |
| 261 | public Ref getRef(int i) throws SQLException { |
| 262 | throw Util.notImplemented(); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * JDBC 2.0 |
| 267 | * |
| 268 | * Get an array column. |
| 269 | * |
| 270 | * @param i the first column is 1, the second is 2, ... |
| 271 | * @return an object representing an SQL array |
| 272 | * @exception SQLException Feature not implemented for now. |
| 273 | */ |
| 274 | public Array getArray(int i) throws SQLException { |
| 275 | throw Util.notImplemented(); |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * JDBC 2.0 |
| 280 | * |
| 281 | * Returns the value of column @i as a Java object. Use the |
| 282 | * param map to determine the class from which to construct data of |
| 283 | * SQL structured and distinct types. |
| 284 | * |
| 285 | * @param colName the column name |
| 286 | * @param map the mapping from SQL type names to Java classes |
| 287 | * @return an object representing the SQL value |
| 288 | * @exception SQLException Feature not implemented for now. |
| 289 | */ |
| 290 | public Object getObject(String colName, java.util.Map map) |
| 291 | throws SQLException { |
| 292 | checkIfClosed("getObject"); |
| 293 | return getObject(findColumn(colName),map); |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * JDBC 2.0 |
| 298 | * |
| 299 | * Get a REF(<structured-type>) column. |
| 300 | * |
| 301 | * @param colName the column name |
| 302 | * @return an object representing data of an SQL REF type |
| 303 | * @exception SQLException Feature not implemented for now. |
| 304 | */ |
| 305 | public Ref getRef(String colName) throws SQLException { |
| 306 | throw Util.notImplemented(); |
| 307 | } |
| 308 | |
| 309 | |
| 310 | |
| 311 | |
| 312 | /** |
| 313 | * JDBC 2.0 |
| 314 | * |
| 315 | * Get an array column. |
| 316 | * |
| 317 | * @param colName the column name |
| 318 | * @return an object representing an SQL array |
| 319 | * @exception SQLException Feature not implemented for now. |
| 320 | */ |
| 321 | public Array getArray(String colName) throws SQLException { |
| 322 | throw Util.notImplemented(); |
| 323 | } |
| 324 | |
| 325 | |
| 326 | /** |
| 327 | Following methods are for the new JDBC 3.0 methods in java.sql.ResultSet |
| 328 | (see the JDBC 3.0 spec). We have the JDBC 3.0 methods in Local20 |
| 329 | package, so we don't have to have a new class in Local30. |
| 330 | The new JDBC 3.0 methods don't make use of any new JDBC3.0 classes and |
| 331 | so this will work fine in jdbc2.0 configuration. |
| 332 | */ |
| 333 | |
| 334 | ///////////////////////////////////////////////////////////////////////// |
| 335 | // |
| 336 | // JDBC 3.0 - New public methods |
| 337 | // |
| 338 | ///////////////////////////////////////////////////////////////////////// |
| 339 | |
| 340 | |
| 341 | |
| 342 | /** |
| 343 | * JDBC 3.0 |
| 344 | * |
| 345 | * Updates the designated column with a java.sql.Ref value. The updater methods are |
| 346 | * used to update column values in the current row or the insert row. The |
| 347 | * updater methods do not update the underlying database; instead the updateRow |
| 348 | * or insertRow methods are called to update the database. |
| 349 | * |
| 350 | * @param columnIndex - the first column is 1, the second is 2 |
| 351 | * @param x - the new column value |
| 352 | * @exception SQLException Feature not implemented for now. |
| 353 | */ |
| 354 | public void updateRef(int columnIndex, Ref x) |
| 355 | throws SQLException |
| 356 | { |
| 357 | throw Util.notImplemented(); |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * JDBC 3.0 |
| 362 | * |
| 363 | * Updates the designated column with a java.sql.Ref value. The updater methods are |
| 364 | * used to update column values in the current row or the insert row. The |
| 365 | * updater methods do not update the underlying database; instead the updateRow |
| 366 | * or insertRow methods are called to update the database. |
| 367 | * |
| 368 | * @param columnName - the SQL name of the column |
| 369 | * @param x - the new column value |
| 370 | * @exception SQLException Feature not implemented for now. |
| 371 | */ |
| 372 | public void updateRef(String columnName, Ref x) |
| 373 | throws SQLException |
| 374 | { |
| 375 | throw Util.notImplemented(); |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * JDBC 3.0 |
| 380 | * |
| 381 | * Updates the designated column with a java.sql.Array value. The updater methods are |
| 382 | * used to update column values in the current row or the insert row. The |
| 383 | * updater methods do not update the underlying database; instead the updateRow |
| 384 | * or insertRow methods are called to update the database. |
| 385 | * |
| 386 | * @param columnIndex - the first column is 1, the second is 2 |
| 387 | * @param x - the new column value |
| 388 | * @exception SQLException Feature not implemented for now. |
| 389 | */ |
| 390 | public void updateArray(int columnIndex, Array x) |
| 391 | throws SQLException |
| 392 | { |
| 393 | throw Util.notImplemented(); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * JDBC 3.0 |
| 398 | * |
| 399 | * Updates the designated column with a java.sql.Array value. The updater methods are |
| 400 | * used to update column values in the current row or the insert row. The |
| 401 | * updater methods do not update the underlying database; instead the updateRow |
| 402 | * or insertRow methods are called to update the database. |
| 403 | * |
| 404 | * @param columnName - the SQL name of the column |
| 405 | * @param x - the new column value |
| 406 | * @exception SQLException Feature not implemented for now. |
| 407 | */ |
| 408 | public void updateArray(String columnName, Array x) |
| 409 | throws SQLException |
| 410 | { |
| 411 | throw Util.notImplemented(); |
| 412 | } |
| 413 | |
| 414 | |
| 415 | |
| 416 | |
| 417 | } |