comparison: libidav/davqlparser.h
libidav/davqlparser.h
- changeset 130
- 80d273229f24
- parent 127
- 7072a2b4ae35
- child 131
- 32e7b3e6b482
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| 129:7532963bd15b | 130:80d273229f24 |
|---|---|
| 155 * Contains the binary information about the parsed query. | 155 * Contains the binary information about the parsed query. |
| 156 * | 156 * |
| 157 * The grammar for a DavQLStatement is: | 157 * The grammar for a DavQLStatement is: |
| 158 * | 158 * |
| 159 * <pre> | 159 * <pre> |
| 160 * Keyword = "select" | "set" | "from" | "at" | "as" | "where" | "with" | |
| 161 * | "order" | "by" | "asc" | "desc"; | |
| 162 * | |
| 160 * Expression = AddExpression; | 163 * Expression = AddExpression; |
| 161 * AddExpression = MultExpression, [AddOperator, AddExpression]; | 164 * AddExpression = MultExpression, [AddOperator, AddExpression]; |
| 162 * MultExpression = BitwiseExpression, [MultOperator, MultExpression]; | 165 * MultExpression = BitwiseExpression, [MultOperator, MultExpression]; |
| 163 * BitwiseExpression = UnaryExpression, [BitwiseOperator, BitwiseExpression]; | 166 * BitwiseExpression = UnaryExpression, [BitwiseOperator, BitwiseExpression]; |
| 164 * UnaryExpression = [UnaryOperator], (ParExpression | AtomicExpression); | 167 * UnaryExpression = [UnaryOperator], (ParExpression | AtomicExpression); |
| 198 * NamedField = Expression, " as ", Identifier; | 201 * NamedField = Expression, " as ", Identifier; |
| 199 * | 202 * |
| 200 * SetExpressions = SetExpression, {",", SetExpression}; | 203 * SetExpressions = SetExpression, {",", SetExpression}; |
| 201 * SetExpression = Identifier, "=", Expression; | 204 * SetExpression = Identifier, "=", Expression; |
| 202 * | 205 * |
| 203 * Path = "%s" | 206 * Path = String |
| 204 * | "/", {?Character? - " "} | 207 * | "/", [PathNode, {"/", PathNode}], ["/"]; |
| 205 * | "'/", {?Character?}, "'"; | 208 * PathNode = {{?Character? - "/"} - Keyword}; |
| 206 * | 209 * |
| 207 * WithClause = "depth", "=", (Number | "infinity"); | 210 * WithClause = "depth", "=", (Number | "infinity"); |
| 208 * | 211 * |
| 209 * OrderByClause = OrderByCriterion, {",", OrderByCriterion}; | 212 * OrderByClause = OrderByCriterion, {",", OrderByCriterion}; |
| 210 * OrderByCriterion = (Identifier | Number), [" asc"|" desc"]; | 213 * OrderByCriterion = (Identifier | Number), [" asc"|" desc"]; |
| 211 * | 214 * |
| 212 * </pre> | 215 * </pre> |
| 213 * | 216 * |
| 214 * Note: mandatory spaces are part of the grammar. But you may also insert an | 217 * Note: mandatory spaces are part of the grammar. But you may also insert an |
| 215 * arbitrary amount of optional spaces between two symbols if they are not part | 218 * arbitrary amount of optional spaces between two symbols if they are not part |
| 216 * of an literal or identifier. | 219 * of an literal, identifier or the path. |
| 217 * | 220 * |
| 218 * <b>SELECT:</b> | 221 * <b>SELECT:</b> |
| 219 * <pre> | 222 * <pre> |
| 220 * SelectStatement = "select ", FieldExpressions, | 223 * SelectStatement = "select ", FieldExpressions, |
| 221 * " from ", Path, | 224 * " from ", Path, |
