[Bast-commits] r9119 - in SQL-Abstract/1.x/trunk: . lib/SQL
frew at dev.catalyst.perl.org
frew at dev.catalyst.perl.org
Sun Apr 11 17:02:36 GMT 2010
Author: frew
Date: 2010-04-11 18:02:36 +0100 (Sun, 11 Apr 2010)
New Revision: 9119
Modified:
SQL-Abstract/1.x/trunk/Changes
SQL-Abstract/1.x/trunk/lib/SQL/Abstract.pm
Log:
Release 1.64
Modified: SQL-Abstract/1.x/trunk/Changes
===================================================================
--- SQL-Abstract/1.x/trunk/Changes 2010-04-11 12:54:59 UTC (rev 9118)
+++ SQL-Abstract/1.x/trunk/Changes 2010-04-11 17:02:36 UTC (rev 9119)
@@ -1,5 +1,7 @@
Revision history for SQL::Abstract
+revision 1.64 2010-04-11 16:58 (UTC)
+----------------------------
- Fix multiple generic op handling regressions by
reverting the auto-equality assumption (turned out
to be a very very bad idea)
@@ -64,7 +66,7 @@
revision 1.52 2009-04-28 23:14 (UTC)
----------------------------
- - allow -between to handle [\"", \""] and \["", @bind]
+ - allow -between to handle [\"", \""] and \["", @bind]
- allow order_by to handle -asc|desc => [qw/colA colB/] (artifact from DBIx::Class)
- more tests and clearing up of some corner cases
- t/10test.t does not run by default (developer only, too cpu intensive)
Modified: SQL-Abstract/1.x/trunk/lib/SQL/Abstract.pm
===================================================================
--- SQL-Abstract/1.x/trunk/lib/SQL/Abstract.pm 2010-04-11 12:54:59 UTC (rev 9118)
+++ SQL-Abstract/1.x/trunk/lib/SQL/Abstract.pm 2010-04-11 17:02:36 UTC (rev 9119)
@@ -15,7 +15,7 @@
# GLOBALS
#======================================================================
-our $VERSION = '1.63_01';
+our $VERSION = '1.64';
# This would confuse some packagers
#$VERSION = eval $VERSION; # numify for warning-free dev releases
@@ -91,11 +91,11 @@
$opt{sqltrue} ||= '1=1';
$opt{sqlfalse} ||= '0=1';
- # special operators
+ # special operators
$opt{special_ops} ||= [];
push @{$opt{special_ops}}, @BUILTIN_SPECIAL_OPS;
- # unary operators
+ # unary operators
$opt{unary_ops} ||= [];
push @{$opt{unary_ops}}, @BUILTIN_UNARY_OPS;
@@ -191,7 +191,7 @@
$self->_SWITCH_refkind($v, {
- ARRAYREF => sub {
+ ARRAYREF => sub {
if ($self->{array_datatypes}) { # if array datatype are activated
push @values, '?';
push @all_bind, $self->_bindtype($column, $v);
@@ -211,7 +211,7 @@
push @all_bind, @bind;
},
- # THINK : anything useful to do with a HASHREF ?
+ # THINK : anything useful to do with a HASHREF ?
HASHREF => sub { # (nothing, but old SQLA passed it through)
#TODO in SQLA >= 2.0 it will die instead
belch "HASH ref as bind value in insert is not supported";
@@ -260,7 +260,7 @@
my $label = $self->_quote($k);
$self->_SWITCH_refkind($v, {
- ARRAYREF => sub {
+ ARRAYREF => sub {
if ($self->{array_datatypes}) { # array datatype
push @set, "$label = ?";
push @all_bind, $self->_bindtype($k, $v);
@@ -320,11 +320,11 @@
my $f = (ref $fields eq 'ARRAY') ? join ', ', map { $self->_quote($_) } @$fields
: $fields;
- my $sql = join(' ', $self->_sqlcase('select'), $f,
+ my $sql = join(' ', $self->_sqlcase('select'), $f,
$self->_sqlcase('from'), $table)
. $where_sql;
- return wantarray ? ($sql, @bind) : $sql;
+ return wantarray ? ($sql, @bind) : $sql;
}
#======================================================================
@@ -341,7 +341,7 @@
my($where_sql, @bind) = $self->where($where);
my $sql = $self->_sqlcase('delete from') . " $table" . $where_sql;
- return wantarray ? ($sql, @bind) : $sql;
+ return wantarray ? ($sql, @bind) : $sql;
}
@@ -364,7 +364,7 @@
$sql .= $self->_order_by($order);
}
- return wantarray ? ($sql, @bind) : $sql;
+ return wantarray ? ($sql, @bind) : $sql;
}
@@ -374,11 +374,11 @@
# dispatch on appropriate method according to refkind of $where
my $method = $self->_METHOD_FOR_refkind("_where", $where);
- my ($sql, @bind) = $self->$method($where, $logic);
+ my ($sql, @bind) = $self->$method($where, $logic);
- # DBIx::Class directly calls _recurse_where in scalar context, so
+ # DBIx::Class directly calls _recurse_where in scalar context, so
# we must implement it, even if not in the official API
- return wantarray ? ($sql, @bind) : $sql;
+ return wantarray ? ($sql, @bind) : $sql;
}
@@ -398,7 +398,7 @@
my (@sql_clauses, @all_bind);
# need to use while() so can shift() for pairs
- while (my $el = shift @clauses) {
+ while (my $el = shift @clauses) {
# switch according to kind of $el and get corresponding ($sql, @bind)
my ($sql, @bind) = $self->_SWITCH_refkind($el, {
@@ -412,7 +412,7 @@
# LDNOTE : previous SQLA code for hashrefs was creating a dirty
# side-effect: the first hashref within an array would change
# the global logic to 'AND'. So [ {cond1, cond2}, [cond3, cond4] ]
- # was interpreted as "(cond1 AND cond2) OR (cond3 AND cond4)",
+ # was interpreted as "(cond1 AND cond2) OR (cond3 AND cond4)",
# whereas it should be "(cond1 AND cond2) OR (cond3 OR cond4)".
SCALARREF => sub { ($$el); },
@@ -541,7 +541,7 @@
: $self->_where_HASHREF($v);
},
- SCALARREF => sub {
+ SCALARREF => sub {
puke "-$op => \\\$scalar not supported, use -nest => ...";
},
@@ -560,14 +560,14 @@
}
sub _where_op_NEST {
- my ($self, $op, $v) = @_;
+ my ($self, $op, $v) = @_;
$self->_SWITCH_refkind($v, {
SCALAR => sub { # permissively interpreted as SQL
belch "literal SQL should be -nest => \\'scalar' "
. "instead of -nest => 'scalar' ";
- return ($v);
+ return ($v);
},
UNDEF => sub {
@@ -583,10 +583,10 @@
sub _where_op_BOOL {
- my ($self, $op, $v) = @_;
+ my ($self, $op, $v) = @_;
- my ( $prefix, $suffix ) = ( $op =~ /\bnot\b/i )
- ? ( '(NOT ', ')' )
+ my ( $prefix, $suffix ) = ( $op =~ /\bnot\b/i )
+ ? ( '(NOT ', ')' )
: ( '', '' );
my ($sql, @bind) = do {
@@ -635,7 +635,7 @@
my $logic = $op ? substr($op, 1) : '';
return $self->_recurse_where(\@distributed, $logic);
- }
+ }
else {
# LDNOTE : not sure of this one. What does "distribute over nothing" mean?
$self->_debug("empty ARRAY($k) means 0=1");
@@ -749,18 +749,18 @@
# distribute $op over each remaining member of @vals, append logic if exists
return $self->_recurse_where([map { {$k => {$op, $_}} } @vals], $logic);
- # LDNOTE : had planned to change the distribution logic when
- # $op =~ $self->{inequality_op}, because of Morgan laws :
+ # LDNOTE : had planned to change the distribution logic when
+ # $op =~ $self->{inequality_op}, because of Morgan laws :
# with {field => {'!=' => [22, 33]}}, it would be ridiculous to generate
- # WHERE field != 22 OR field != 33 : the user probably means
+ # WHERE field != 22 OR field != 33 : the user probably means
# WHERE field != 22 AND field != 33.
# To do this, replace the above to roughly :
# my $logic = ($op =~ $self->{inequality_op}) ? 'AND' : 'OR';
# return $self->_recurse_where([map { {$k => {$op, $_}} } @vals], $logic);
- }
+ }
else {
- # try to DWIM on equality operators
+ # try to DWIM on equality operators
# LDNOTE : not 100% sure this is the correct thing to do ...
return ($self->{sqlfalse}) if $op =~ $self->{equality_op};
return ($self->{sqltrue}) if $op =~ $self->{inequality_op};
@@ -792,8 +792,8 @@
sub _where_hashpair_SCALAR {
my ($self, $k, $v) = @_;
$self->_debug("NOREF($k) means simple key=val: $k $self->{cmp} $v");
- my $sql = join ' ', $self->_convert($self->_quote($k)),
- $self->_sqlcase($self->{cmp}),
+ my $sql = join ' ', $self->_convert($self->_quote($k)),
+ $self->_sqlcase($self->{cmp}),
$self->_convert('?');
my @bind = $self->_bindtype($k, $v);
return ( $sql, @bind);
@@ -1075,7 +1075,7 @@
# do the quoting, except for "*" or for `table`.*
my @quoted = map { $_ eq '*' ? $_: $ql.$_.$qr} @to_quote;
- # reassemble and return.
+ # reassemble and return.
return join $sep, @quoted;
}
@@ -1087,7 +1087,7 @@
# LDNOTE : modified the previous implementation below because
# it was not consistent : the first "return" is always an array,
# the second "return" is context-dependent. Anyway, _convert
-# seems always used with just a single argument, so make it a
+# seems always used with just a single argument, so make it a
# scalar function.
# return @_ unless $self->{convert};
# my $conv = $self->_sqlcase($self->{convert});
@@ -1105,7 +1105,7 @@
my $self = shift;
my($col, @vals) = @_;
- #LDNOTE : changed original implementation below because it did not make
+ #LDNOTE : changed original implementation below because it did not make
# sense when bindtype eq 'columns' and @vals > 1.
# return $self->{bindtype} eq 'columns' ? [ $col, @vals ] : @vals;
@@ -1235,7 +1235,7 @@
foreach my $k ( sort keys %$data ) {
my $v = $data->{$k};
$self->_SWITCH_refkind($v, {
- ARRAYREF => sub {
+ ARRAYREF => sub {
if ($self->{array_datatypes}) { # array datatype
push @all_bind, $self->_bindtype($k, $v);
}
@@ -1282,7 +1282,7 @@
} elsif ($r eq 'SCALAR') {
# literal SQL without bind
push @sqlq, "$label = $$v";
- } else {
+ } else {
push @sqlq, "$label = ?";
push @sqlv, $self->_bindtype($k, $v);
}
@@ -1300,7 +1300,7 @@
} elsif ($r eq 'SCALAR') { # literal SQL without bind
# embedded literal SQL
push @sqlq, $$v;
- } else {
+ } else {
push @sqlq, '?';
push @sqlv, $v;
}
@@ -1423,14 +1423,14 @@
If your database has array types (like for example Postgres),
activate the special option C<< array_datatypes => 1 >>
-when creating the C<SQL::Abstract> object.
+when creating the C<SQL::Abstract> object.
Then you may use an arrayref to insert and update database array types:
my $sql = SQL::Abstract->new(array_datatypes => 1);
my %data = (
planets => [qw/Mercury Venus Earth Mars/]
);
-
+
my($stmt, @bind) = $sql->insert('solar_system', \%data);
This results in:
@@ -1450,7 +1450,7 @@
my %data = (
name => 'Bill',
date_entered => \["to_date(?,'MM/DD/YYYY')", "03/02/2003"],
- );
+ );
The first value in the array is the actual SQL. Any other values are
optional and would be included in the bind values array. This gives
@@ -1458,7 +1458,7 @@
my($stmt, @bind) = $sql->insert('people', \%data);
- $stmt = "INSERT INTO people (name, date_entered)
+ $stmt = "INSERT INTO people (name, date_entered)
VALUES (?, to_date(?,'MM/DD/YYYY'))";
@bind = ('Bill', '03/02/2003');
@@ -1505,7 +1505,7 @@
The functions are simple. There's one for each major SQL operation,
and a constructor you use first. The arguments are specified in a
-similar order to each function (table, then fields, then a where
+similar order to each function (table, then fields, then a where
clause) to try and simplify things.
@@ -1562,8 +1562,8 @@
array of the form:
@where = (
- event_date => {'>=', '2/13/99'},
- event_date => {'<=', '4/24/03'},
+ event_date => {'>=', '2/13/99'},
+ event_date => {'<=', '4/24/03'},
);
will generate SQL like this:
@@ -1582,7 +1582,7 @@
The logic can also be changed locally by inserting
a modifier in front of an arrayref :
- @where = (-and => [event_date => {'>=', '2/13/99'},
+ @where = (-and => [event_date => {'>=', '2/13/99'},
event_date => {'<=', '4/24/03'} ]);
See the L</"WHERE CLAUSES"> section for explanations.
@@ -1660,7 +1660,7 @@
=item quote_char
This is the character that a table or column name will be quoted
-with. By default this is an empty string, but you could set it to
+with. By default this is an empty string, but you could set it to
the character C<`>, to generate SQL like this:
SELECT `a_field` FROM `a_table` WHERE `some_field` LIKE '%someval%'
@@ -1672,7 +1672,7 @@
SELECT [a_field] FROM [a_table] WHERE [some_field] LIKE '%someval%'
-Quoting is useful if you have tables or columns names that are reserved
+Quoting is useful if you have tables or columns names that are reserved
words in your database's SQL dialect.
=item name_sep
@@ -1685,8 +1685,8 @@
=item array_datatypes
-When this option is true, arrayrefs in INSERT or UPDATE are
-interpreted as array datatypes and are passed directly
+When this option is true, arrayrefs in INSERT or UPDATE are
+interpreted as array datatypes and are passed directly
to the DBI layer.
When this option is false, arrayrefs are interpreted
as literal SQL, just like refs to arrayrefs
@@ -1697,13 +1697,13 @@
=item special_ops
-Takes a reference to a list of "special operators"
+Takes a reference to a list of "special operators"
to extend the syntax understood by L<SQL::Abstract>.
See section L</"SPECIAL OPERATORS"> for details.
=item unary_ops
-Takes a reference to a list of "unary operators"
+Takes a reference to a list of "unary operators"
to extend the syntax understood by L<SQL::Abstract>.
See section L</"UNARY OPERATORS"> for details.
@@ -1748,14 +1748,14 @@
=head2 select($source, $fields, $where, $order)
-This returns a SQL SELECT statement and associated list of bind values, as
+This returns a SQL SELECT statement and associated list of bind values, as
specified by the arguments :
=over
=item $source
-Specification of the 'FROM' part of the statement.
+Specification of the 'FROM' part of the statement.
The argument can be either a plain scalar (interpreted as a table
name, will be quoted), or an arrayref (interpreted as a list
of table names, joined by commas, quoted), or a scalarref
@@ -1764,10 +1764,10 @@
=item $fields
-Specification of the list of fields to retrieve from
+Specification of the list of fields to retrieve from
the source.
The argument can be either an arrayref (interpreted as a list
-of field names, will be joined by commas and quoted), or a
+of field names, will be joined by commas and quoted), or a
plain scalar (literal SQL, not quoted).
Please observe that this API is not as flexible as for
the first argument C<$table>, for backwards compatibility reasons.
@@ -1776,13 +1776,13 @@
Optional argument to specify the WHERE part of the query.
The argument is most often a hashref, but can also be
-an arrayref or plain scalar --
+an arrayref or plain scalar --
see section L<WHERE clause|/"WHERE CLAUSES"> for details.
=item $order
Optional argument to specify the ORDER BY part of the query.
-The argument can be a scalar, a hashref or an arrayref
+The argument can be a scalar, a hashref or an arrayref
-- see section L<ORDER BY clause|/"ORDER BY CLAUSES">
for details.
@@ -1887,11 +1887,11 @@
);
This simple code will create the following:
-
+
$stmt = "WHERE user = ? AND ( status = ? OR status = ? OR status = ? )";
@bind = ('nwiger', 'assigned', 'in-progress', 'pending');
-A field associated to an empty arrayref will be considered a
+A field associated to an empty arrayref will be considered a
logical false and will generate 0=1.
=head2 Specific comparison operators
@@ -1977,7 +1977,7 @@
As the second C<!=> key will obliterate the first. The solution
is to use the special C<-modifier> form inside an arrayref:
- priority => [ -and => {'!=', 2},
+ priority => [ -and => {'!=', 2},
{'!=', 1} ]
@@ -2018,7 +2018,7 @@
$stmt = "WHERE status = ? AND reportid IN (?,?,?)";
@bind = ('completed', '567', '2335', '2');
-The reverse operator C<-not_in> generates SQL C<NOT IN> and is used in
+The reverse operator C<-not_in> generates SQL C<NOT IN> and is used in
the same way.
If the argument to C<-in> is an empty array, 'sqlfalse' is generated
@@ -2067,7 +2067,7 @@
start0 => { -between => [ 1, 2 ] },
start1 => { -between => \["? AND ?", 1, 2] },
start2 => { -between => \"lower(x) AND upper(y)" },
- start3 => { -between => [
+ start3 => { -between => [
\"lower(x)",
\["upper(?)", 'stuff' ],
] },
@@ -2084,7 +2084,7 @@
@bind = (1, 2, 1, 2, 'stuff');
-These are the two builtin "special operators"; but the
+These are the two builtin "special operators"; but the
list can be expanded : see section L</"SPECIAL OPERATORS"> below.
=head2 Unary operators: bool
@@ -2175,7 +2175,7 @@
That would yield:
- WHERE ( user = ? AND
+ WHERE ( user = ? AND
( ( workhrs > ? AND geo = ? )
OR ( workhrs < ? AND geo = ? ) ) )
@@ -2195,18 +2195,18 @@
yielding
- WHERE ( ( ( a = ? AND b = ? )
- OR ( c = ? OR d = ? )
+ WHERE ( ( ( a = ? AND b = ? )
+ OR ( c = ? OR d = ? )
OR ( e LIKE ? AND e LIKE ? ) ) )
This difference in syntax is unfortunate but must be preserved for
historical reasons. So be careful : the two examples below would
seem algebraically equivalent, but they are not
- {col => [-and => {-like => 'foo%'}, {-like => '%bar'}]}
+ {col => [-and => {-like => 'foo%'}, {-like => '%bar'}]}
# yields : WHERE ( ( col LIKE ? AND col LIKE ? ) )
- [-and => {col => {-like => 'foo%'}, {col => {-like => '%bar'}}]]
+ [-and => {col => {-like => 'foo%'}, {col => {-like => '%bar'}}]]
# yields : WHERE ( ( col LIKE ? OR col LIKE ? ) )
@@ -2296,17 +2296,17 @@
This yields :
- $stmt = "WHERE (foo = ? AND bar IN (SELECT c1 FROM t1
+ $stmt = "WHERE (foo = ? AND bar IN (SELECT c1 FROM t1
WHERE c2 < ? AND c3 LIKE ?))";
@bind = (1234, 100, "foo%");
-Other subquery operators, like for example C<"E<gt> ALL"> or C<"NOT IN">,
+Other subquery operators, like for example C<"E<gt> ALL"> or C<"NOT IN">,
are expressed in the same way. Of course the C<$sub_stmt> and
-its associated bind values can be generated through a former call
+its associated bind values can be generated through a former call
to C<select()> :
my ($sub_stmt, @sub_bind)
- = $sql->select("t1", "c1", {c2 => {"<" => 100},
+ = $sql->select("t1", "c1", {c2 => {"<" => 100},
c3 => {-like => "foo%"}});
my %where = (
foo => 1234,
@@ -2314,10 +2314,10 @@
);
In the examples above, the subquery was used as an operator on a column;
-but the same principle also applies for a clause within the main C<%where>
+but the same principle also applies for a clause within the main C<%where>
hash, like an EXISTS subquery :
- my ($sub_stmt, @sub_bind)
+ my ($sub_stmt, @sub_bind)
= $sql->select("t1", "*", {c1 => 1, c2 => \"> t0.c0"});
my %where = (
foo => 1234,
@@ -2326,21 +2326,21 @@
which yields
- $stmt = "WHERE (foo = ? AND EXISTS (SELECT * FROM t1
+ $stmt = "WHERE (foo = ? AND EXISTS (SELECT * FROM t1
WHERE c1 = ? AND c2 > t0.c0))";
@bind = (1234, 1);
-Observe that the condition on C<c2> in the subquery refers to
-column C<t0.c0> of the main query : this is I<not> a bind
-value, so we have to express it through a scalar ref.
+Observe that the condition on C<c2> in the subquery refers to
+column C<t0.c0> of the main query : this is I<not> a bind
+value, so we have to express it through a scalar ref.
Writing C<< c2 => {">" => "t0.c0"} >> would have generated
C<< c2 > ? >> with bind value C<"t0.c0"> ... not exactly
what we wanted here.
Another use of the subquery technique is when some SQL clauses need
parentheses, as it often occurs with some proprietary SQL extensions
-like for example fulltext expressions, geospatial expressions,
+like for example fulltext expressions, geospatial expressions,
NATIVE clauses, etc. Here is an example of a fulltext query in MySQL :
my %where = (
@@ -2350,7 +2350,7 @@
Finally, here is an example where a subquery is used
for expressing unary negation:
- my ($sub_stmt, @sub_bind)
+ my ($sub_stmt, @sub_bind)
= $sql->where({age => [{"<" => 10}, {">" => 20}]});
$sub_stmt =~ s/^ where //i; # don't want "WHERE" in the subclause
my %where = (
@@ -2385,7 +2385,7 @@
=head1 ORDER BY CLAUSES
-Some functions take an order by clause. This can either be a scalar (just a
+Some functions take an order by clause. This can either be a scalar (just a
column name,) a hash of C<< { -desc => 'col' } >> or C<< { -asc => 'col' } >>,
or an array of either of the two previous forms. Examples:
@@ -2431,9 +2431,9 @@
},
]);
-A "special operator" is a SQL syntactic clause that can be
+A "special operator" is a SQL syntactic clause that can be
applied to a field, instead of a usual binary operator.
-For example :
+For example :
WHERE field IN (?, ?, ?)
WHERE field BETWEEN ? AND ?
@@ -2477,13 +2477,13 @@
=back
-For example, here is an implementation
+For example, here is an implementation
of the MATCH .. AGAINST syntax for MySQL
my $sqlmaker = SQL::Abstract->new(special_ops => [
-
+
# special op for MySql MATCH (field) AGAINST(word1, word2, ...)
- {regex => qr/^match$/i,
+ {regex => qr/^match$/i,
handler => sub {
my ($self, $field, $op, $arg) = @_;
$arg = [$arg] if not ref $arg;
@@ -2496,7 +2496,7 @@
return ($sql, @bind);
}
},
-
+
]);
@@ -2516,7 +2516,7 @@
},
]);
-A "unary operator" is a SQL syntactic clause that can be
+A "unary operator" is a SQL syntactic clause that can be
applied to a field - the operator goes before the field
You can write your own operator handlers - supply a C<unary_ops>
@@ -2604,7 +2604,7 @@
table, the actual query script can be extremely simplistic.
If you're B<REALLY> lazy (I am), check out C<HTML::QuickTable> for
-a fast interface to returning and formatting data. I frequently
+a fast interface to returning and formatting data. I frequently
use these three modules together to write complex database query
apps in under 50 lines.
@@ -2614,17 +2614,17 @@
Version 1.50 was a major internal refactoring of C<SQL::Abstract>.
Great care has been taken to preserve the I<published> behavior
documented in previous versions in the 1.* family; however,
-some features that were previously undocumented, or behaved
+some features that were previously undocumented, or behaved
differently from the documentation, had to be changed in order
to clarify the semantics. Hence, client code that was relying
-on some dark areas of C<SQL::Abstract> v1.*
+on some dark areas of C<SQL::Abstract> v1.*
B<might behave differently> in v1.50.
The main changes are :
=over
-=item *
+=item *
support for literal SQL through the C<< \ [$sql, bind] >> syntax.
@@ -2640,7 +2640,7 @@
optional support for L<array datatypes|/"Inserting and Updating Arrays">
-=item *
+=item *
defensive programming : check arguments
@@ -2658,7 +2658,7 @@
fixed semantics of _bindtype on array args
-=item *
+=item *
dropped the C<_anoncopy> of the %where tree. No longer necessary,
we just avoid shifting arrays within that tree.
@@ -2677,7 +2677,7 @@
this module. Unfortunately, most of them submitted bugs via CPAN
so I have no idea who they are! But the people I do know are:
- Ash Berlin (order_by hash term support)
+ Ash Berlin (order_by hash term support)
Matt Trout (DBIx::Class support)
Mark Stosberg (benchmarking)
Chas Owens (initial "IN" operator support)
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