Tue Mar  9 21:51:57 EST 2010  Daniel White <daniel@whitehouse.id.au>
  * Add function, within-transaction-p, to determine if a transaction is open

New patches:

[Add function, within-transaction-p, to determine if a transaction is open
Daniel White <daniel@whitehouse.id.au>**20100309105157
 Ignore-this: 8f4b353e7f892debf089f7de1c581a6e
] {
hunk ./doc/postmodern.html 337
 
     <p class="desc">Roll back the given database transaction.</p>
 
+    <p class="def">
+      <span>function</span>
+      <a name="within-transaction-p"></a>
+      within-transaction-p ()
+    </p>
+
+    <p class="desc">Returns a boolean indicating whether a transaction is open within the current scope.</p>
+
     <p class="def">
       <span>macro</span>
       <a name="with-savepoint"></a>
hunk ./doc/postmodern.html 895
       <li><a href="#with-connection">with-connection</a></li>
       <li><a href="#with-savepoint">with-savepoint</a></li>
       <li><a href="#with-transaction">with-transaction</a></li>
+      <li><a href="#within-transaction-p">within-transaction-p</a></li>
     </ul>
 
   </body>
hunk ./postmodern/package.lisp 26
    #:sequence-next #:list-sequences #:sequence-exists-p
    #:list-tables #:table-exists-p #:table-description
    #:list-views #:view-exists-p
-   #:with-transaction #:commit-transaction #:abort-transaction
+   #:with-transaction #:commit-transaction #:abort-transaction #:within-transaction-p
    #:with-savepoint #:rollback-savepoint #:release-savepoint
    #:db-null #:coalesce
 
hunk ./postmodern/tests.lisp 105
 (test transaction
   (with-test-connection
     (execute (:create-table test-data ((value :type integer))))
+    (is (not (within-transaction-p)))
     (ignore-errors
       (with-transaction ()
hunk ./postmodern/tests.lisp 108
+        (is (within-transaction-p))
         (execute (:insert-into 'test-data :set 'value 2))
         (error "no wait")))
     (is (length (query (:select '* :from 'test-data))) 0)
hunk ./postmodern/tests.lisp 116
       (with-transaction (transaction)
         (execute (:insert-into 'test-data :set 'value 2))
         (commit-transaction transaction)
+        (is (within-transaction-p))
         (error "no wait!!")))
     (is (length (query (:select '* :from 'test-data))) 1)
     (with-transaction (transaction)
hunk ./postmodern/tests.lisp 121
       (execute (:insert-into 'test-data :set 'value 44))
-      (abort-transaction transaction))
+      (abort-transaction transaction)
+      (is (within-transaction-p)))
     (is (length (query (:select '* :from 'test-data))) 1)
hunk ./postmodern/tests.lisp 124
+    (is (not (within-transaction-p)))
     (execute (:drop-table 'test-data))))
 
 (defclass test-data ()
hunk ./postmodern/util.lisp 77
 associated database connection of a transaction. When open-p is nil,
 the transaction has been aborted or committed."))
 
+(defvar *transaction* nil
+  "Special holding the current transaction.")
+
+(defun within-transaction-p ()
+  "Returns a boolean indicating whether a transaction is open within the current scope."
+  (when *transaction* t))
+
 (defmacro with-transaction ((&optional name) &body body)
   "Execute the body within a database transaction, committing when the
 body exits normally, and aborting otherwise. An optional name can be
hunk ./postmodern/util.lisp 90
 given to the transaction, which can be used to force a commit or abort
 before the body unwinds."
   (let ((name (or name (gensym))))
-    `(let ((,name (make-instance 'transaction-handle)))
+    `(let* ((*transaction* (make-instance 'transaction-handle))
+            (,name *transaction*))
       (execute "BEGIN")
       (unwind-protect
            (prog1 (progn ,@body)
}

Context:

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] 
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 Ignore-this: c30f340ba5a5e17c4bf21218ae4dac91
 
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 channels
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] 
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] 
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 tested).
 
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 for the rational 1/123 "8.130081300813009E-3" which is accepted and
 interpreted properly by PostgreSQL.
] 
[fix wrong default argument in enc-read-string
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marijnh@gmail.com**20080331131149] 
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marijnh@gmail.com**20080331082153] 
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marijnh@gmail.com**20080330115001] 
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marijnh@gmail.com**20080330114339] 
[add test case for auto-escaping of reserved words
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[add automatic escaping of reserved words, undo previous patch which is no longer needed
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[ugly hack to fix the problem of daos with only a primary and no other columns
**20080227145952] 
[raise an error when a :single, :alist, :str-alist, :list, or :row query yields a number of rows that is not 1
marijnh@gmail.com**20080228094458] 
[add :except-all and :intersect-all to s-sql
marijnh@gmail.com**20080228094043] 
[export and document symbols introduced in previous patches
marijnh@gmail.com**20080228092912] 
[remove disfunctional change-class trick, wrap stream-errors in a database-connection-error when they provide a :reconnect restart
marijnh@gmail.com**20080228091651] 
[provide :reconnect restart in more situations, database-connection-error is now the condition that is raised when this restart is available
marijnh@gmail.com**20080228084919] 
[remove inline declarations causing mysterious SBCL errors
marijnh@gmail.com**20080227153544] 
[fix foo.* expanding to foo._
marijnh@gmail.com**20080226103631] 
[clean up md5-optimise patch
marijnh@gmail.com**20080224073859] 
[Optimize md5-password
attila.lendvai@gmail.com**20080223175249] 
[revert accidental de-alphabetization of symbol list in docs
marijnh@gmail.com**20080223105834] 
[add *query-log* to cl-postgres
marijnh@gmail.com**20080223104959] 
[add license blurb to new file
marijnh@gmail.com**20080223093027] 
[add register-type-reader for custom interpretation of pg types
marijnh@gmail.com**20080222222824] 
[add file forgotten in previous patch (errors.lisp), and shorten error names
marijnh@gmail.com**20080222210710] 
[add cute asdf:test-op interface to tests
marijnh@gmail.com**20080222205148] 
[add distinct types for useful error conditions
marijnh@gmail.com**20080222201246] 
[Modify integer-reader so that it generates both the signed/unsigned version.
attila.lendvai@gmail.com**20071111163119
 
 This way it's more like the integer-writer. Also declaim inline the functions.
] 
[document sql-template
marijnh@gmail.com**20080220203027] 
[disable pretty printing when generating sql templates
marijnh@gmail.com**20080220195541] 
[remove superfluous check in sequence-next
marijnh@gmail.com**20080218221709] 
[add a way to precompute sql templates, storing them in functions
marijnh@gmail.com**20080218221642] 
[fix :set in the case it is given a dynamic argument that evaluates to nil
marijnh@gmail.com**20080222165046] 
[make sure dead connections do not get repooled
marijnh@gmail.com**20080213193556] 
[add support for 'union all' operator
marijnh@gmail.com**20080207091001] 
[remove (the ...) form that causes probs in lispworks
marijnh@gmail.com**20080204075046] 
[forgot a line in the previous patch
marijnh@gmail.com**20080114143344] 
[allow :unique indices in deftable, retouch deftable docs
marijnh@gmail.com**20080114141127] 
[mark release 1.05
marijnh@gmail.com**20080111222254] 
[change the meaning of the type (string N) from VARCHAR(N) to CHAR(N) in s-sql
marijnh@gmail.com**20080111215306] 
[fix forgotten comma in previous patch
marijnh@gmail.com**20080109172732] 
[make the interface for defining simple s-sql operators public
marijnh@gmail.com**20080108194027] 
[make strcat take a list of strings instead of &rest args
marijnh@gmail.com**20080108175954] 
[add an E prefix to strings to properly indicate that they are backslash-escaped, and add a mode for standard sql strings
marijnh@gmail.com**20080106204435] 
[store the configuration parameters in a hash table for later reference
marijnh@gmail.com**20080106200208] 
[fix and document the savepoint interface
marijnh@gmail.com**20080105110131] 
[add savepoint interface (by Ivan Boldyrev)
marijnh@gmail.com**20080105093551] 
[add type information to escaped representation of simple-date values
marijnh@gmail.com**20080105093046] 
[be a bit more liberal in the forms that :insert-into allows (stuff like :union is also valid)
marijnh@gmail.com**20080103151527] 
[mark release 1.04
marijnh@gmail.com**20071227092950] 
[recognise unicode support in Allegro (by Ivan Boldyrev)
marijnh@gmail.com**20071227091922] 
[there is no apostrophe in to-dos! (it still looks funny)
marijnh@gmail.com**20071118213523] 
[support :distinct-on, change place of :distinct
marijnh@gmail.com**20071113232921] 
[add distinct option to :select operator
marijnh@gmail.com**20071113134330] 
[+ corrected to * in split-on-keywords docstring.
Ryszard Szopa <ryszard.szopa@gmail.com>**20071107221948] 
[make error messages for malformed joins a little less confusing
marijnh@gmail.com**20071017115929] 
[optimize hex encoding in md5 authorisation
marijnh@gmail.com**20070925131842] 
[mark release 1.03
marijnh@gmail.com**20070918171824] 
[missing comma in definition of `WITH-CONNECTION*'.
Ryszard Szopa <ryszard.szopa@gmail.com>**20070918155338] 
[link to submarine from docs
marijnh@gmail.com**20070917135653] 
[add my name to the docs
marijnh@gmail.com**20070917132526] 
[*untested*: give some more practical alternatives to with-connection
marijnh@gmail.com**20070917131631] 
[*untested*: fix weird use of loop, to hopefully fix a lispworks problem
marijnh@gmail.com**20070917124449] 
[communicate.lisp: bugfix for CMUCL
Ryszard Szopa <ryszard.szopa@gmail.com>**20070905130310
 
 If CMUCL was used, declaring byte-length to be of type FIXNUM in
 read-ascii-string caused it to be optimized as non-NIL when given as
 first argument to WHEN. Fixed by declaring it to be of type (OR NULL
 FIXNUM).
 
] 
[make string-escaping and binary-data-escaping a *lot* faster by turning off *print-pretty* and not using format
marijnh@gmail.com**20070730213308] 
[fix query to evaluate its arguments *before* it prepares its query
marijnh@gmail.com**20070728153645] 
[add some check-type tests to prevent the connection from being screwed up in case a non-string value is passed as a query or query name
marijnh@gmail.com**20070728074336] 
[tiny error in doc
marijnh@gmail.com**20070724203257] 
[mark release 1.02
marijnh@gmail.com**20070724201043] 
[fix for the patch that added effected-rows output to query and execute
marijnh@gmail.com**20070724200520] 
[make the query macro more picky about interpreting arguments as format specifiers
marijnh@gmail.com**20070724194830] 
[detect server shutdown errors, close the connection when they happen
marijnh@gmail.com**20070716124633] 
[use Attila's ensure-socket-is-closed in a few more places
marijnh@gmail.com**20070716122115] 
[also add note about previous patch to postmodern documentation
marijnh@gmail.com**20070716114659] 
[clean up effected-rows code
marijnh@gmail.com**20070716114132] 
[Typo
attila.lendvai@gmail.com**20070712173643] 
[Return the updated row count from CommandComplete
attila.lendvai@gmail.com**20070712173609] 
[Make aborting transactions safer, properly close the socket
attila.lendvai@gmail.com**20070523124441] 
[fix to previous patch, make dao-exists-p check for bound auto-id, not save-dao, because the slot name is not always id
marijnh@gmail.com**20070622074026] 
[make save-dao work nicely with previous patch
marijnh@gmail.com**20070621155617] 
[add :defer-id keyword to table class initializer
marijnh@gmail.com**20070617205036] 
[release 1.01
marijnh@gmail.com**20070613105755] 
[sql-ize the name of fields when building index names
marijnh@gmail.com**20070522161607] 
[Extended integer-writer to define write-int* functions. Use write-int4 where appropriate.
levente.meszaros@gmail.com**20070503081639] 
[Use ecase at two places instead of case
attila.lendvai@gmail.com**20070424113757] 
[mark release 1.0 in docs
marijnh@gmail.com**20070515172832] 
[missed a :type-of in one-but-last patch
marijnh@gmail.com**20070430004853] 
[use uninterned keywords for exports in all packages
marijnh@gmail.com**20070430004807] 
[add :of-type keyword to type declarations in loops
marijnh@gmail.com**20070430004023] 
[Support binding (vector (unsigned-byte 8)) in bind-message. IOW, support binary long objects.
attila.lendvai@gmail.com**20070421142807] 
[Added vector-row-reader
attila.lendvai@gmail.com**20070421001358] 
[FIX: ignore-row-reader was collecting unnecessarily
attila.lendvai@gmail.com**20070421000500] 
[Added a simple blob test
attila.lendvai@gmail.com**20070420234300] 
[Use uninterned symbols in the .asd
attila.lendvai@gmail.com**20070420193639] 
[Signal an exported 'postgresql-warning so that it can be muffled
attila.lendvai@gmail.com**20070420193528] 
[fix :limit sql operator
marijnh@gmail.com**20070327113825] 
[release .24
marijnh@gmail.com**20070316081950] 
[make message-case macro continue with the next message if it encounters a warning (thanks to Bart Botta)
marijnh@gmail.com**20070303133912] 
[make :reconnect restarts usable, document them
marijnh@gmail.com**20070216075349] 
[allow extra arguments to query and execute to replace placeholders like $1 in the query
marijnh@gmail.com**20070215190255] 
[minor corrections in docs
marijnh@gmail.com**20070208194545] 
[release .23
marijnh@gmail.com**20070129085059] 
[fix bug in expansion of :create-table for NULL columns
marijnh@gmail.com**20070129084832] 
[fix bug that made regexp operator expand to minus
marijnh@gmail.com**20070127204150] 
[note release .22 in documentation
marijnh@gmail.com**20070127094928] 
[revise syntax of create-table, allowing constraints, foreign keys, and default values to be specified
marijnh@gmail.com**20070127093828] 
[remove typo from docs
marijnh@gmail.com**20070126204028] 
[beautify the style of the docs a bit
marijnh@gmail.com**20070126203826] 
[disallow recursive use of queries from row-readers
marijnh@gmail.com**20070126200826] 
[make the transaction model less error-prone
marijnh@gmail.com**20070126200631] 
[report release .21 in docs
marijnh@gmail.com**20070122213642] 
[update create-table example to reflect changes in syntax
marijnh@gmail.com**20070122211915] 
[fix typo in docs
marijnh@gmail.com**20070122211559] 
[add support for regular expression matching and traditional like/ilike matching to s-sql
marijnh@gmail.com**20070122211323] 
[make retrieving dao objects from a query result more robust
marijnh@gmail.com**20070122205950] 
[move db-null type into S-SQL, and use it in :create-table
marijnh@gmail.com**20070117142836] 
[switch from trivial-sockets to usocket
marijnh@gmail.com**20070117135908] 
[a few corrections in the documentation
marijnh@gmail.com**20061224074412] 
[correct typo in a link
marijnh@gmail.com**20061222204441] 
[initial import
marijnh@gmail.com**20061222202457] 
Patch bundle hash:
2fc2dbe49df6e67883c362ed1d9585e59242749b