| 1 | /* |
| 2 | * Copyright 2007 brunella ltd |
| 3 | * |
| 4 | * Licensed under the LGPL Version 3 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * |
| 7 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 8 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 9 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 10 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 11 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 12 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 13 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 14 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 15 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 16 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 17 | * THE POSSIBILITY OF SUCH DAMAGE. |
| 18 | */ |
| 19 | package sf.qof.adapter; |
| 20 | |
| 21 | import static sf.qof.codegen.Constants.SIG_Boolean_valueOf; |
| 22 | import static sf.qof.codegen.Constants.SIG_booleanValue; |
| 23 | import static sf.qof.codegen.Constants.SIG_getString; |
| 24 | import static sf.qof.codegen.Constants.SIG_getStringNamed; |
| 25 | import static sf.qof.codegen.Constants.SIG_registerOutParameter; |
| 26 | import static sf.qof.codegen.Constants.SIG_setNull; |
| 27 | import static sf.qof.codegen.Constants.SIG_setString; |
| 28 | import static sf.qof.codegen.Constants.TYPE_Boolean; |
| 29 | import static sf.qof.codegen.Constants.TYPE_CallableStatement; |
| 30 | import static sf.qof.codegen.Constants.TYPE_PreparedStatement; |
| 31 | import static sf.qof.codegen.Constants.TYPE_ResultSet; |
| 32 | import static sf.qof.codegen.Constants.TYPE_SQLException; |
| 33 | import static sf.qof.codegen.Constants.TYPE_String; |
| 34 | import static sf.qof.codegen.Constants.TYPE_boolean; |
| 35 | import static sf.qof.codegen.Constants.TYPE_int; |
| 36 | |
| 37 | import java.util.HashSet; |
| 38 | import java.util.Set; |
| 39 | |
| 40 | import net.sf.cglib.core.CodeEmitter; |
| 41 | import net.sf.cglib.core.Local; |
| 42 | import net.sf.cglib.core.Signature; |
| 43 | |
| 44 | import org.objectweb.asm.Label; |
| 45 | import org.objectweb.asm.Type; |
| 46 | |
| 47 | import sf.qof.QueryObjectFactory; |
| 48 | import sf.qof.mapping.ParameterMapping; |
| 49 | import sf.qof.mapping.ResultMapping; |
| 50 | |
| 51 | /** |
| 52 | * BooleanAdapter is a generator mapping adapter for boolean data types. |
| 53 | * |
| 54 | * <p>It maps <code>VARCHAR</code> columns to <code>boolean</code> and <code>Boolean</code> and vice versa.</p> |
| 55 | * |
| 56 | * <p>Examples:</p> |
| 57 | * <pre><blockquote> |
| 58 | * (1) BooleanAdapter.register("yesno", "Y", "N", false, true); |
| 59 | * |
| 60 | * (2) BooleanAdapter.register("true-false", "true", "false", true, false); |
| 61 | * |
| 62 | * (3) BooleanAdapter.register("bigX", "X", null, true, true); |
| 63 | * </blockquote></pre> |
| 64 | * |
| 65 | * <p>(1) Maps boolean types to "Y" and "N", is not case-sensitive ("y" is true as well) |
| 66 | * and allows null values (a SQL null value gets mapped to <code>false</code> if the |
| 67 | * type is <code>boolean</code>).</p> |
| 68 | * |
| 69 | * <p>(2) Maps boolean types to the strings "true" and "false", is case-sensitive and |
| 70 | * does not allow null values.</p> |
| 71 | * |
| 72 | * <p>(3) Maps boolean types to "X" and null, is case-sensitive and allows nulls.</p> |
| 73 | * |
| 74 | * @see #registerYesNo() |
| 75 | * @see #register(String, String, String, boolean, boolean) |
| 76 | */ |
| 77 | public class BooleanAdapter implements GeneratorMappingAdapter { |
| 78 | |
| 79 | private final static Signature SIG_toUpperCase = new Signature("toUpperCase", "()Ljava/lang/String;"); |
| 80 | private final static Signature SIG_equals = new Signature("equals", "(Ljava/lang/Object;)Z"); |
| 81 | |
| 82 | private String typeName; |
| 83 | private String trueString; |
| 84 | private String falseString; |
| 85 | private boolean caseSensitive; |
| 86 | private boolean allowNull; |
| 87 | |
| 88 | private BooleanAdapter(String typeName, String trueString, String falseString, boolean caseSensitive, boolean allowNull) { |
| 89 | if (trueString == null) { |
| 90 | throw new IllegalArgumentException("trueString must not be null"); |
| 91 | } |
| 92 | this.typeName = typeName; |
| 93 | this.trueString = trueString; |
| 94 | this.falseString = falseString; |
| 95 | this.caseSensitive = caseSensitive; |
| 96 | this.allowNull = allowNull; |
| 97 | } |
| 98 | |
| 99 | public void generateFromResult(ResultMapping resultMapping, CodeEmitter co, Local result, int[] indexes) { |
| 100 | co.load_local(result); |
| 101 | co.push(indexes[0]); |
| 102 | co.invoke_interface(result.getType(), SIG_getString); |
| 103 | emitProcessResult(resultMapping, co); |
| 104 | } |
| 105 | |
| 106 | public void generateFromResultSet(ResultMapping resultMapping, CodeEmitter co, Local resultSet, String[] columns) { |
| 107 | co.load_local(resultSet); |
| 108 | co.push(columns[0]); |
| 109 | co.invoke_interface(TYPE_ResultSet, SIG_getStringNamed); |
| 110 | emitProcessResult(resultMapping, co); |
| 111 | } |
| 112 | |
| 113 | private void emitProcessResult(ResultMapping resultMapping, CodeEmitter co) { |
| 114 | Label labelNull = co.make_label(); |
| 115 | Label labelNotFalse = co.make_label(); |
| 116 | Label labelEnd = co.make_label(); |
| 117 | Local localString = co.make_local(TYPE_String); |
| 118 | Local localTrueFalse = co.make_local(TYPE_boolean); |
| 119 | Local localResult = null; |
| 120 | if (resultMapping.getType() == Boolean.class) { |
| 121 | localResult = co.make_local(TYPE_Boolean); |
| 122 | } |
| 123 | co.store_local(localString); |
| 124 | co.load_local(localString); |
| 125 | co.ifnull(labelNull); |
| 126 | // not null |
| 127 | co.load_local(localString); |
| 128 | if (!caseSensitive) { |
| 129 | co.invoke_virtual(TYPE_String, SIG_toUpperCase); |
| 130 | co.push(trueString.toUpperCase()); |
| 131 | } else { |
| 132 | co.push(trueString); |
| 133 | } |
| 134 | co.invoke_virtual(Type.getType(Object.class), SIG_equals); |
| 135 | co.store_local(localTrueFalse); |
| 136 | if (falseString != null) { |
| 137 | co.load_local(localTrueFalse); |
| 138 | co.if_jump(CodeEmitter.NE, labelNotFalse); |
| 139 | co.load_local(localString); |
| 140 | if (!caseSensitive) { |
| 141 | co.invoke_virtual(TYPE_String, SIG_toUpperCase); |
| 142 | co.push(falseString.toUpperCase()); |
| 143 | } else { |
| 144 | co.push(falseString); |
| 145 | } |
| 146 | co.invoke_virtual(Type.getType(Object.class), SIG_equals); |
| 147 | // negate result |
| 148 | Label labelIsFalse = co.make_label(); |
| 149 | Label labelIsTrueFalseEnd = co.make_label(); |
| 150 | |
| 151 | co.if_jump(CodeEmitter.EQ, labelIsFalse); |
| 152 | co.push(false); |
| 153 | co.goTo(labelIsTrueFalseEnd); |
| 154 | co.mark(labelIsFalse); |
| 155 | co.push(true); |
| 156 | co.mark(labelIsTrueFalseEnd); |
| 157 | |
| 158 | co.store_local(localTrueFalse); |
| 159 | co.load_local(localTrueFalse); |
| 160 | co.if_jump(CodeEmitter.EQ, labelNotFalse); |
| 161 | co.throw_exception(TYPE_SQLException, "invalid value for mapper \"" + typeName + "\""); |
| 162 | co.mark(labelNotFalse); |
| 163 | } |
| 164 | if (resultMapping.getType() == Boolean.class) { |
| 165 | co.load_local(localTrueFalse); |
| 166 | co.invoke_static(TYPE_Boolean, SIG_Boolean_valueOf); |
| 167 | co.store_local(localResult); |
| 168 | } |
| 169 | |
| 170 | co.goTo(labelEnd); |
| 171 | |
| 172 | co.mark(labelNull); |
| 173 | // null |
| 174 | if (falseString != null) { |
| 175 | if (allowNull) { |
| 176 | if (resultMapping.getType() == Boolean.class) { |
| 177 | co.aconst_null(); |
| 178 | co.store_local(localResult); |
| 179 | } else { |
| 180 | co.push(false); |
| 181 | co.store_local(localTrueFalse); |
| 182 | } |
| 183 | } else { |
| 184 | co.throw_exception(TYPE_SQLException, "null value not allowed for mapper \"" + typeName + "\""); |
| 185 | } |
| 186 | } else { |
| 187 | if (resultMapping.getType() == Boolean.class) { |
| 188 | co.push(false); |
| 189 | co.invoke_static(TYPE_Boolean, SIG_Boolean_valueOf); |
| 190 | co.store_local(localResult); |
| 191 | } else { |
| 192 | co.push(false); |
| 193 | co.store_local(localTrueFalse); |
| 194 | } |
| 195 | } |
| 196 | co.mark(labelEnd); |
| 197 | if (resultMapping.getType() == Boolean.class) { |
| 198 | co.load_local(localResult); |
| 199 | } else { |
| 200 | co.load_local(localTrueFalse); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | public void generateToPreparedStatement(ParameterMapping parameterMapping, CodeEmitter co, Local preparedStatement, int[] indexes, Local indexOffset) { |
| 205 | Label labelFalse = co.make_label(); |
| 206 | Label labelTrueFalseEnd = co.make_label(); |
| 207 | if (parameterMapping.getType() == Boolean.class) { |
| 208 | // Boolean type |
| 209 | Local localBoolean = co.make_local(TYPE_Boolean); |
| 210 | co.store_local(localBoolean); |
| 211 | co.load_local(localBoolean); |
| 212 | Label labelNull = co.make_label(); |
| 213 | Label labelEnd = co.make_label(); |
| 214 | co.ifnull(labelNull); |
| 215 | // not null |
| 216 | if (falseString != null) { |
| 217 | co.load_local(preparedStatement); |
| 218 | co.push(indexes[0]); |
| 219 | if (indexOffset != null) { |
| 220 | co.load_local(indexOffset); |
| 221 | co.math(CodeEmitter.ADD, TYPE_int); |
| 222 | } |
| 223 | co.load_local(localBoolean); |
| 224 | co.invoke_virtual(TYPE_Boolean, SIG_booleanValue); |
| 225 | co.if_jump(CodeEmitter.EQ, labelFalse); |
| 226 | // true |
| 227 | co.push(trueString); |
| 228 | co.goTo(labelTrueFalseEnd); |
| 229 | //false |
| 230 | co.mark(labelFalse); |
| 231 | co.push(falseString); |
| 232 | co.mark(labelTrueFalseEnd); |
| 233 | co.invoke_interface(TYPE_PreparedStatement, SIG_setString); |
| 234 | co.goTo(labelEnd); |
| 235 | } else { |
| 236 | co.load_local(localBoolean); |
| 237 | co.invoke_virtual(TYPE_Boolean, SIG_booleanValue); |
| 238 | co.if_jump(CodeEmitter.EQ, labelFalse); |
| 239 | // true |
| 240 | co.load_local(preparedStatement); |
| 241 | co.push(indexes[0]); |
| 242 | if (indexOffset != null) { |
| 243 | co.load_local(indexOffset); |
| 244 | co.math(CodeEmitter.ADD, TYPE_int); |
| 245 | } |
| 246 | co.push(trueString); |
| 247 | co.invoke_interface(TYPE_PreparedStatement, SIG_setString); |
| 248 | co.goTo(labelTrueFalseEnd); |
| 249 | //false |
| 250 | co.mark(labelFalse); |
| 251 | co.load_local(preparedStatement); |
| 252 | co.push(indexes[0]); |
| 253 | if (indexOffset != null) { |
| 254 | co.load_local(indexOffset); |
| 255 | co.math(CodeEmitter.ADD, TYPE_int); |
| 256 | } |
| 257 | co.push(java.sql.Types.VARCHAR); |
| 258 | co.invoke_interface(TYPE_PreparedStatement, SIG_setNull); |
| 259 | |
| 260 | co.mark(labelTrueFalseEnd); |
| 261 | co.goTo(labelEnd); |
| 262 | } |
| 263 | |
| 264 | co.mark(labelNull); |
| 265 | // null |
| 266 | if (allowNull) { |
| 267 | co.load_local(preparedStatement); |
| 268 | co.push(indexes[0]); |
| 269 | if (indexOffset != null) { |
| 270 | co.load_local(indexOffset); |
| 271 | co.math(CodeEmitter.ADD, TYPE_int); |
| 272 | } |
| 273 | co.push(java.sql.Types.VARCHAR); |
| 274 | co.invoke_interface(TYPE_PreparedStatement, SIG_setNull); |
| 275 | } else { |
| 276 | co.throw_exception(TYPE_SQLException, "null value not allowed for mapper \"" + typeName + "\""); |
| 277 | } |
| 278 | co.mark(labelEnd); |
| 279 | } else { |
| 280 | // boolean type |
| 281 | Local localBoolean = co.make_local(TYPE_boolean); |
| 282 | co.store_local(localBoolean); |
| 283 | if (falseString != null) { |
| 284 | co.load_local(preparedStatement); |
| 285 | co.push(indexes[0]); |
| 286 | if (indexOffset != null) { |
| 287 | co.load_local(indexOffset); |
| 288 | co.math(CodeEmitter.ADD, TYPE_int); |
| 289 | } |
| 290 | co.load_local(localBoolean); |
| 291 | co.if_jump(CodeEmitter.EQ, labelFalse); |
| 292 | // true |
| 293 | co.push(trueString); |
| 294 | co.goTo(labelTrueFalseEnd); |
| 295 | //false |
| 296 | co.mark(labelFalse); |
| 297 | co.push(falseString); |
| 298 | |
| 299 | co.mark(labelTrueFalseEnd); |
| 300 | co.invoke_interface(TYPE_PreparedStatement, SIG_setString); |
| 301 | } else { |
| 302 | co.load_local(localBoolean); |
| 303 | co.if_jump(CodeEmitter.EQ, labelFalse); |
| 304 | // true |
| 305 | co.load_local(preparedStatement); |
| 306 | co.push(indexes[0]); |
| 307 | if (indexOffset != null) { |
| 308 | co.load_local(indexOffset); |
| 309 | co.math(CodeEmitter.ADD, TYPE_int); |
| 310 | } |
| 311 | co.push(trueString); |
| 312 | co.invoke_interface(TYPE_PreparedStatement, SIG_setString); |
| 313 | co.goTo(labelTrueFalseEnd); |
| 314 | //false |
| 315 | co.mark(labelFalse); |
| 316 | co.load_local(preparedStatement); |
| 317 | co.push(indexes[0]); |
| 318 | if (indexOffset != null) { |
| 319 | co.load_local(indexOffset); |
| 320 | co.math(CodeEmitter.ADD, TYPE_int); |
| 321 | } |
| 322 | co.push(java.sql.Types.VARCHAR); |
| 323 | co.invoke_interface(TYPE_PreparedStatement, SIG_setNull); |
| 324 | co.mark(labelTrueFalseEnd); |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | public void generateRegisterOutputParameters(ResultMapping resultMapping, CodeEmitter co, Local callableStatement, |
| 330 | int[] indexes) { |
| 331 | co.load_local(callableStatement); |
| 332 | co.push(indexes[0]); |
| 333 | co.push(java.sql.Types.VARCHAR); |
| 334 | co.invoke_interface(TYPE_CallableStatement, SIG_registerOutParameter); |
| 335 | } |
| 336 | |
| 337 | public int getNumberOfColumns() { |
| 338 | return 1; |
| 339 | } |
| 340 | |
| 341 | public Set<Class<?>> getTypes() { |
| 342 | return typeSet; |
| 343 | } |
| 344 | |
| 345 | private static Set<Class<?>> typeSet; |
| 346 | |
| 347 | static { |
| 348 | typeSet = new HashSet<Class<?>>(); |
| 349 | typeSet.add(boolean.class); |
| 350 | typeSet.add(Boolean.class); |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * Registers a yes/no adapter with name "yesno". |
| 355 | * |
| 356 | * It maps "Y" to true, "N" to false, is not case-sensitive and allows null values. |
| 357 | */ |
| 358 | public static void registerYesNo() { |
| 359 | register("yesno", "Y", "N", false, true); |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * Registers a <code>BooleanAdapter</code> with a given name. |
| 364 | * |
| 365 | * @param typeName the type name to be used in parameter and result definitions |
| 366 | * @param trueString a string representing the true value |
| 367 | * @param falseString a string representing the false value. Can be null |
| 368 | * @param caseSensitive true if the mapping is case-sensitive |
| 369 | * @param allowNull true if null values are allowed |
| 370 | */ |
| 371 | public static void register(String typeName, String trueString, String falseString, boolean caseSensitive, boolean allowNull) { |
| 372 | QueryObjectFactory.registerMapper(typeName, new BooleanAdapter(typeName, trueString, falseString, caseSensitive, allowNull)); |
| 373 | } |
| 374 | |
| 375 | } |