### Question:
MappedUpdate extends BaseMappedStatement<T, ID> { public static <T, ID> MappedUpdate<T, ID> build(DatabaseType databaseType, TableInfo<T, ID> tableInfo) throws SQLException { FieldType idField = tableInfo.getIdField(); if (idField == null) { throw new SQLException("Cannot update " + tableInfo.getDataClass() + " because it doesn't have an id field"); } StringBuilder sb = new StringBuilder(64); appendTableName(databaseType, sb, "UPDATE ", tableInfo.getTableName()); boolean first = true; int argFieldC = 0; FieldType versionFieldType = null; int versionFieldTypeIndex = -1; for (FieldType fieldType : tableInfo.getFieldTypes()) { if (isFieldUpdatable(fieldType, idField)) { if (fieldType.isVersion()) { versionFieldType = fieldType; versionFieldTypeIndex = argFieldC; } argFieldC++; } } argFieldC++; if (versionFieldType != null) { argFieldC++; } FieldType[] argFieldTypes = new FieldType[argFieldC]; argFieldC = 0; for (FieldType fieldType : tableInfo.getFieldTypes()) { if (!isFieldUpdatable(fieldType, idField)) { continue; } if (first) { sb.append("SET "); first = false; } else { sb.append(", "); } appendFieldColumnName(databaseType, sb, fieldType, null); argFieldTypes[argFieldC++] = fieldType; sb.append("= ?"); } sb.append(' '); appendWhereFieldEq(databaseType, idField, sb, null); argFieldTypes[argFieldC++] = idField; if (versionFieldType != null) { sb.append(" AND "); appendFieldColumnName(databaseType, sb, versionFieldType, null); sb.append("= ?"); argFieldTypes[argFieldC++] = versionFieldType; } return new MappedUpdate<T, ID>(tableInfo, sb.toString(), argFieldTypes, versionFieldType, versionFieldTypeIndex); } private  MappedUpdate(TableInfo<T, ID> tableInfo, String statement, FieldType[] argFieldTypes,
			FieldType versionFieldType, int versionFieldTypeIndex); static MappedUpdate<T, ID> build(DatabaseType databaseType, TableInfo<T, ID> tableInfo); int update(DatabaseConnection databaseConnection, T data, ObjectCache objectCache);  }### Answer:
@Test(expected = SQLException.class) public void testNoIdBuildUpdater() throws Exception { MappedUpdate.build(databaseType, new TableInfo<NoId, Void>(connectionSource, null, NoId.class)); }
@Test(expected = SQLException.class) public void testJustIdBuildUpdater() throws Exception { MappedUpdate.build(databaseType, new TableInfo<NoId, Void>(connectionSource, null, NoId.class)); }