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2012年 7月 23日 (月) 14:37:29 JST
Kouhei Sutou 2012-07-23 14:37:29 +0900 (Mon, 23 Jul 2012) New Revision: 7bb345f07922128ed1f75d06905805f2cdd72f62 https://github.com/groonga/groonga/commit/7bb345f07922128ed1f75d06905805f2cdd72f62 Log: doc script syntax: add execution examples Added files: doc/source/example/reference/grn_expr/script_syntax/simple_addition_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_and_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_not_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_or_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_xor_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_division_operator_quotient.log doc/source/example/reference/grn_expr/script_syntax/simple_division_operator_remainder.log doc/source/example/reference/grn_expr/script_syntax/simple_equal_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_function.log doc/source/example/reference/grn_expr/script_syntax/simple_grouping.log doc/source/example/reference/grn_expr/script_syntax/simple_left_shift_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_logical_and_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_logical_but_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_logical_not_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_logical_or_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_multiplication_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_not_equal_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_right_shift_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_signed_right_shift_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_subtraction_operator.log doc/source/example/reference/grn_expr/script_syntax/simple_unsigned_right_shift_operator.log Modified files: doc/source/reference/grn_expr/script_syntax.txt Added: doc/source/example/reference/grn_expr/script_syntax/simple_addition_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_addition_operator.log 2012-07-23 14:37:29 +0900 (49fd9bf) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == 10 + 5' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_and_operator.log (+59 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_and_operator.log 2012-07-23 14:37:29 +0900 (be523ce) @@ -0,0 +1,59 @@ +Execution example:: + + select Entries --filter '(n_likes & 1) == 1' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 4 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 4, + # "Good-bye Senna", + # "I migrated all Senna system!", + # 3 + # ], + # [ + # 5, + # "Good-bye Tritonn", + # "I also migrated all Tritonn system!", + # 3 + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_not_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_not_operator.log 2012-07-23 14:37:29 +0900 (539aeee) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter '~n_likes == -6' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_or_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_or_operator.log 2012-07-23 14:37:29 +0900 (1292740) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == (1 | 4)' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_xor_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_bitwise_xor_operator.log 2012-07-23 14:37:29 +0900 (c3c3863) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == (10 ^ 15)' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_division_operator_quotient.log (+47 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_division_operator_quotient.log 2012-07-23 14:37:29 +0900 (17cd48e) @@ -0,0 +1,47 @@ +Execution example:: + + select Entries --filter 'n_likes == 26 / 7' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 2 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 4, + # "Good-bye Senna", + # "I migrated all Senna system!", + # 3 + # ], + # [ + # 5, + # "Good-bye Tritonn", + # "I also migrated all Tritonn system!", + # 3 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_division_operator_remainder.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_division_operator_remainder.log 2012-07-23 14:37:29 +0900 (c44e0d8) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == 26 % 7' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_equal_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_equal_operator.log 2012-07-23 14:37:29 +0900 (a67ab63) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == 5' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_function.log (+47 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_function.log 2012-07-23 14:37:29 +0900 (4018ed2) @@ -0,0 +1,47 @@ +Execution example:: + + select Entries --filter 'edit_distance(_key, "Groonga") <= 1' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 2 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_grouping.log (+92 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_grouping.log 2012-07-23 14:37:29 +0900 (edbf8cb) @@ -0,0 +1,92 @@ +Execution example:: + + select Entries --filter 'n_likes < 5 && content @ "senna" || content @ "fast"' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 3 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 4, + # "Good-bye Senna", + # "I migrated all Senna system!", + # 3 + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] + select Entries --filter 'n_likes < 5 && (content @ "senna" || content @ "fast")' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 4, + # "Good-bye Senna", + # "I migrated all Senna system!", + # 3 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_left_shift_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_left_shift_operator.log 2012-07-23 14:37:29 +0900 (f3d2249) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == (5 << 1)' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_logical_and_operator.log (+47 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_logical_and_operator.log 2012-07-23 14:37:29 +0900 (6b08a98) @@ -0,0 +1,47 @@ +Execution example:: + + select Entries --filter 'content @ "fast" && n_likes >= 10' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 2 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_logical_but_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_logical_but_operator.log 2012-07-23 14:37:29 +0900 (0ee1132) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'content @ "fast" &! content @ "mroonga"' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_logical_not_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_logical_not_operator.log 2012-07-23 14:37:29 +0900 (9b8dd4c) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter '!(n_likes == 5)' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_logical_or_operator.log (+47 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_logical_or_operator.log 2012-07-23 14:37:29 +0900 (a610ca0) @@ -0,0 +1,47 @@ +Execution example:: + + select Entries --filter 'n_likes == 5 || n_likes == 10' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 2 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_multiplication_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_multiplication_operator.log 2012-07-23 14:37:29 +0900 (b428240) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == 3 * 5' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_not_equal_operator.log (+59 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_not_equal_operator.log 2012-07-23 14:37:29 +0900 (d8fe862) @@ -0,0 +1,59 @@ +Execution example:: + + select Entries --filter 'n_likes != 5' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 4 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 4, + # "Good-bye Senna", + # "I migrated all Senna system!", + # 3 + # ], + # [ + # 5, + # "Good-bye Tritonn", + # "I also migrated all Tritonn system!", + # 3 + # ], + # [ + # 2, + # "Groonga", + # "I started to use groonga. It's very fast!", + # 10 + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_right_shift_operator.log (+35 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_right_shift_operator.log 2012-07-23 14:37:29 +0900 (785df21) @@ -0,0 +1,35 @@ +Execution example:: + + select Entries --filter 'n_likes == (-10 >>> 1)' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 0 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_signed_right_shift_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_signed_right_shift_operator.log 2012-07-23 14:37:29 +0900 (3cd2025) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == -(-10 >> 1)' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_subtraction_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_subtraction_operator.log 2012-07-23 14:37:29 +0900 (c5a5359) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == 20 - 5' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 3, + # "Mroonga", + # "I also started to use mroonga. It's also very fast! Really fast!", + # 15 + # ] + # ] + # ] + # ] Added: doc/source/example/reference/grn_expr/script_syntax/simple_unsigned_right_shift_operator.log (+41 -0) 100644 =================================================================== --- /dev/null +++ doc/source/example/reference/grn_expr/script_syntax/simple_unsigned_right_shift_operator.log 2012-07-23 14:37:29 +0900 (b69d409) @@ -0,0 +1,41 @@ +Execution example:: + + select Entries --filter 'n_likes == (2147483648 - (-10 >>> 1))' + # [ + # [ + # 0, + # 1337566253.89858, + # 0.000355720520019531 + # ], + # [ + # [ + # [ + # 1 + # ], + # [ + # [ + # "_id", + # "UInt32" + # ], + # [ + # "_key", + # "ShortText" + # ], + # [ + # "content", + # "Text" + # ], + # [ + # "n_likes", + # "UInt32" + # ] + # ], + # [ + # 1, + # "The first post!", + # "Welcome! This is my first post!", + # 5 + # ] + # ] + # ] + # ] Modified: doc/source/reference/grn_expr/script_syntax.txt (+194 -28) =================================================================== --- doc/source/reference/grn_expr/script_syntax.txt 2012-07-23 14:18:01 +0900 (60006f1) +++ doc/source/reference/grn_expr/script_syntax.txt 2012-07-23 14:37:29 +0900 (2cfb43c) @@ -156,25 +156,63 @@ control syntax. ``A ? B : C`` returns ``B`` if ``A`` is true, ``C`` otherwise. -TODO: example +Here is a simple exmaple. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_control_syntax_ternary_operator.log +.. select Entries --filter 'n_likes == (_id == 1 ? 5 : 3)' + +The expression matches records that ``_id`` column value is equal to ``1`` +and ``n_likes`` column value is equal to ``5`` or ``_id`` column value is +not equal to 1 and ``n_likes`` column value is equal to ``3``. Grouping -------- Its syntax is ``(...)``. ``...`` is space separated expression list. -TODO: description +``(...)`` groups one ore more expressions and they can be processed as +an expression. ``a && b || c`` means that ``a`` and ``b`` are matched +or ``c`` is matched. ``a && (b || c)`` means that ``a`` and one of +``b`` and ``c`` are matched. + +Here is a simple exmaple. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_grouping.log +.. select Entries --filter 'n_likes < 5 && content @ "senna" || content @ "fast"' +.. select Entries --filter 'n_likes < 5 && (content @ "senna" || content @ "fast")' + +The first expression doesn't use grouping. It matches records that +``n_likes < 5`` and ``content @ "senna"`` are matched or +``content @ "fast"`` is matched. -TODO: example +The second expression uses grouping. It matches records that ``n_likes +< 5`` and one of ``content @ "senna"`` or ``content @ "fast"`` are +matched. Function call ------------- Its syntax is ``name(arugment1, argument2, ...)``. -TODO: description +``name(argument1, argument2, ...)`` calls a function that is named +``name`` with arguments ``argument1``, ``argument2`` and ``...``. -TODO: example +See :doc:`/reference/functions/` for available functin list. + +Here is a simple exmaple. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_function.log +.. select Entries --filter 'edit_distance(_key, "Groonga") <= 1' + +The expression uses :doc:`/reference/function/edit_distance`. It +matches records that ``_key`` column value is ``"Groonga"`` like +value. Similality of ``"Groonga"`` is computed as edit distance. If +edit distance is less than or equal to 1, the value is treated as +similar. In this case, ``"Groonga"`` and ``"Mroonga"`` are treated as +similar. Basic operators --------------- @@ -188,7 +226,14 @@ Its syntax is ``number1 * number2``. The operator multiplies ``number1`` and ``number2`` and returns the result. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_multiplication_operator.log +.. select Entries --filter 'n_likes == 3 * 5' + +The expression matches records that ``n_likes`` column value is equal +to ``15`` (= ``3 * 5``). Addition operator ^^^^^^^^^^^^^^^^^ @@ -197,7 +242,14 @@ Its syntax is ``number1 + number2``. The operator adds ``number1`` and ``number2`` and returns the result. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_addition_operator.log +.. select Entries --filter 'n_likes == 10 + 5' + +The expression matches records that ``n_likes`` column value is equal +to ``15`` (= ``10 + 5``). Subtraction operator ^^^^^^^^^^^^^^^^^^^^ @@ -206,7 +258,14 @@ Its syntax is ``number1 - number2``. The operator subtracts ``number2`` from ``number1`` and returns the result. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_subtraction_operator.log +.. select Entries --filter 'n_likes == 20 - 5' + +The expression matches records that ``n_likes`` column value is equal +to ``15`` (= ``20 - 5``). Division operator ^^^^^^^^^^^^^^^^^ @@ -216,7 +275,21 @@ Its syntax is ``number1 / number2`` and ``number1 % number2``. The operator divides ``number2`` by ``number1``. ``/`` returns the quotient of result. ``%`` returns the remainder of result. -TODO: example +Here is simple examples. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_division_operator_quotient.log +.. select Entries --filter 'n_likes == 26 / 7' + +The expression matches records that ``n_likes`` column value is equal +to ``3`` (= ``26 / 7``). + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_division_operator_remainder.log +.. select Entries --filter 'n_likes == 26 % 7' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` (= ``26 % 7``). Logical NOT operator ^^^^^^^^^^^^^^^^^^^^ @@ -225,7 +298,14 @@ Its syntax is ``!condition``. The operator inverts boolean value of ``condition``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_logical_not_operator.log +.. select Entries --filter '!(n_likes == 5)' + +The expression matches records that ``n_likes`` column value is not +equal to ``5``. Bitwise NOT operator ^^^^^^^^^^^^^^^^^^^^ @@ -234,7 +314,14 @@ Its syntax is ``~number``. The operator returns bitwise NOT of ``number``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_bitwise_not_operator.log +.. select Entries --filter '~n_likes == -6' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` because bitwise NOT of ``~5`` is ``-6``. Bitwise AND operator ^^^^^^^^^^^^^^^^^^^^ @@ -243,7 +330,16 @@ Its syntax is ``number1 & number2``. The operator returns bitwise AND between ``number1`` and ``number2``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_bitwise_and_operator.log +.. select Entries --filter '(n_likes & 1) == 1' + +The expression matches records that ``n_likes`` column value is even +number because bitwise AND between an even number and ``1`` is equal +to ``1`` and bitwise AND between an odd number and ``1`` is equal to +``0``. Logical AND operator ^^^^^^^^^^^^^^^^^^^^ @@ -253,17 +349,32 @@ Its syntax is ``condition1 && condition2``. The operator returns true if both of ``condition1`` and ``condition2`` are true, false otherwise. -TODO: example +Here is a simple example. -Logical NOT operator +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_logical_and_operator.log +.. select Entries --filter 'content @ "fast" && n_likes >= 10' + +The expression matches records that ``content`` column value has the +word ``fast`` and ``n_likes`` column value is greater or equal to +``10``. + +Logical BUT operator ^^^^^^^^^^^^^^^^^^^^ Its syntax is ``condition1 &! condition2``. -The operator returns true if ``condition1`` is true but -``condition2`` is false, false otherwise. +The operator returns true if ``condition1`` is true but ``condition2`` +is false, false otherwise. It returns difference set. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_logical_but_operator.log +.. select Entries --filter 'content @ "fast" &! content @ "mroonga"' + +The expression matches records that ``content`` column value has the +word ``fast`` but doesn't have the word ``mroonga``. Left shift operator ^^^^^^^^^^^^^^^^^^^ @@ -273,7 +384,14 @@ Its syntax is ``number1 << number2``. The operator performs a bitwise left shift operation on ``number1`` by ``number2``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_left_shift_operator.log +.. select Entries --filter 'n_likes == (5 << 1)' + +The expression matches records that ``n_likes`` column value is equal +to ``10`` (= ``5 << 1``). Signed right shift operator ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -283,18 +401,31 @@ Its syntax is ``number1 >> number2``. The operator shifts bits of ``number1`` to right by ``number2``. The sign of the result is the same as ``number1``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_signed_right_shift_operator.log +.. select Entries --filter 'n_likes == -(-10 >> 1)' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` (= ``-(-10 >> 1)`` = ``-(-5)``). Unsigned right shift operator ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Its syntax is ``number1 >>> number2``. -The operator shifts bits of ``number1`` to right by ``number2``. If -``number2`` is larger than 0, the sign of the result is always -positive. +The operator shifts bits of ``number1`` to right by ``number2``. The +leftmost ``number2`` bits are filled by ``0``. + +Here is a simple example. -TODO: example +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_unsigned_right_shift_operator.log +.. select Entries --filter 'n_likes == (2147483648 - (-10 >>> 1))' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` (= ``2147483648 - (-10 >>> 1)`` = ``2147483648 - 2147483643``). Bitwise OR operator ^^^^^^^^^^^^^^^^^^^ @@ -303,7 +434,14 @@ Its syntax is ``number1 | number2``. The operator returns bitwise OR between ``number1`` and ``number2``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_bitwise_or_operator.log +.. select Entries --filter 'n_likes == (1 | 4)' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` (= ``1 | 4``). Bitwise XOR operator ^^^^^^^^^^^^^^^^^^^^ @@ -312,7 +450,14 @@ Its syntax is ``number1 ^ number2``. The operator returns bitwise XOR between ``number1`` and ``number2``. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_bitwise_xor_operator.log +.. select Entries --filter 'n_likes == (10 ^ 15)' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` (= ``10 ^ 15``). Logical OR operator ^^^^^^^^^^^^^^^^^^^ @@ -322,7 +467,14 @@ Its syntax is ``condition1 || condition2``. The operator returns true if either ``condition1`` or ``condition2`` is true, false otherwise. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_logical_or_operator.log +.. select Entries --filter 'n_likes == 5 || n_likes == 10' + +The expression matches records that ``n_likes`` column value is equal +to ``5`` or ``10``. Equal operator ^^^^^^^^^^^^^^ @@ -332,7 +484,14 @@ Its syntax is ``object1 == object2``. The operator returns true if ``object1`` equals to ``object2``, false otherwise. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_equal_operator.log +.. select Entries --filter 'n_likes == 5' + +The expression matches records that ``n_likes`` column value is equal +to ``5``. Not equal operator ^^^^^^^^^^^^^^^^^^ @@ -342,7 +501,14 @@ Its syntax is ``object1 != object2``. The operator returns true if ``object1`` does not equal to ``object2``, false otherwise. -TODO: example +Here is a simple example. + +.. groonga-command +.. include:: ../../example/reference/grn_expr/script_syntax/simple_not_equal_operator.log +.. select Entries --filter 'n_likes != 5' + +The expression matches records that ``n_likes`` column value is not +equal to ``5``. 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