Mercurial > pub > Impl
diff Lib/IMPL/Web/Application/RestResource.pm @ 201:0c018a247c8a
Reworked REST resource classes to be more transparent and intuitive
author | sergey |
---|---|
date | Tue, 24 Apr 2012 19:52:07 +0400 |
parents | a9dbe534d236 |
children | 5146e17a7b76 |
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--- a/Lib/IMPL/Web/Application/RestResource.pm Tue Apr 24 02:34:49 2012 +0400 +++ b/Lib/IMPL/Web/Application/RestResource.pm Tue Apr 24 19:52:07 2012 +0400 @@ -15,199 +15,106 @@ CustomResource => 'IMPL::Web::Application::CustomResource' }, base => { - 'IMPL::Web::Application::RestBaseResource' => '@_' + 'IMPL::Web::Application::RestCustomResource' => '@_' } }; BEGIN { public property target => PROP_GET | PROP_OWNERSET; + public property index => PROP_GET | PROP_OWNERSET; + public property fetch => PROP_GET | PROP_OWNERSET; public property methods => PROP_GET | PROP_OWNERSET; public property childRegex => PROP_GET | PROP_OWNERSET; public property enableForms => PROP_GET | PROP_OWNERSET; - public property orphan => PROP_GET | PROP_OWNERSET; - public property listChildren => PROP_GET | PROP_OWNERSET; - public property fetchChild => PROP_GET | PROP_OWNERSET; - public property createChild => PROP_GET | PROP_OWNERSET; - public property updateChild => PROP_GET | PROP_OWNERSET; - public property deleteChild => PROP_GET | PROP_OWNERSET; } sub CTOR { my ($this) = @_; - die ArgumentException->new("id","Identifier is required for non-root resources") if $this->id and not length $this->id; die ArgumentException->new("target") unless $this->target; - die ArgumentException->new("A contract is required") unless $this->contract; + + $this->final($this->childRegex ? 0 : 1); if ($this->enableForms) { - + $this->methods->{create} = { + get => \&_ParentGet, + post => \&_ParentPost, + final => 1 # this resource doesn't have any children + }; + + $this->methods->{edit} = { + get => \&_ParentGet, + post => \&_ParentPut, + final => 1 # this resource doesn't have any children + }; + + $this->methods->{delete} { + get => \&_ParentGet, + post => \&_ParentDelete + final => 1 # this resource doesn't have any children + } } } -sub GetImpl { - my ($this,$action) = @_; - - return $this->target; -} - -sub PutImpl { +sub _ParentGet { my ($this,$action) = @_; - - die ForbiddenException->new() if $this->orhpan; - - $this->parent->UpdateImpl($this->id,$action); + return $this->parent->GetImpl($action); } -sub PostImpl { - my ($this,$id,$action) = @_; - - my $method; - - if (length $id == 0) { - $method = $this->insert or die ForbiddenException->new(); - - $method = { - method => $method, - parameters => [qw(query)] - } unless ref $method; - } elsif ($this->methods and $method = $this->methods->{$id}->{post}) { - # we got method info - } else { - die ForbiddenException->new(); - } - - return $this->InvokeMemeber($method,$id,$action); +sub _ParentPut { + my ($this,$action) = @_; + return $this->parent->PutImpl($action); } -sub DeleteImpl { - my ($this,$id,$action) = @_; - - my $rx = $this->childRegex; - if ($rx and $id =~ m/$rx/ and my $method = $this->delete) { - - $method = { - method => $method, - parameters => [qw(id)] - } unless ref $method; - - return $this->InvokeMember($method,$id,$action); - } else { - die ForbiddenException->new(); - } +sub _ParentPost { + my ($this,$action) = @_; + return $this->parent->PostImpl($action); } -sub HttpFallbackImpl { - die ForbiddenException->new(); -} - -sub UpdateImpl { - my ($this,$id,$action) = @_; - - my $method = $this->updateChild or die ForbiddenException->new(); - $this->InvokeMember($method,$action); +sub _ParentDelete { + my ($this,$action) = @_; + return $this->parent->DeleteImpl($action); } sub FetchChildResource { my ($this,$id,$action) = @_; my $rx = $this->childRegex; - my $method; - my %params = ( - parent => $this, - id => $id - ); + + my $res; if (length $id == 0) { - $method = $this->list; + my $method = $this->index; die ForbiddenException->new() unless $method; - return $this->contract->Transform( $this->InvokeMember($method,$id,$action), \%params ); + $res = $this->InvokeMember($method,$action); - } elsif ($method = $this->methods->{$id}) { - # поскольку данный объект был получен не как дочерний объект, - # а как выполнение метода, то для него не определены операции - # put и delete по умолчанию. - $params{orphan} = 1; - - return $this->contract->Transform( $this->InvokeMember($method,$id,$action), \%params ); + } elsif (my $resource = $this->methods->{$id}) { + return CustomResource->new( + get => $resource->{get}, + post => $resource->{post}, + put => $resource->{put}, + delete => $resource->{delete}, + parent => $this, + id => $id, + target => $this->target + ); } elsif ($rx and $id =~ m/^$rx$/ and $method = $this->fetch) { - # ok + $res = $this->InvokeMember($method,$action, { id => $id } ); } else { die ForbiddenException->new(); } - my $res = $this->InvokeMember($method,$id,$action); die NotFoundException->new() unless defined $res; return $this->contract->Transform($res, {parent => $this, id => $id} ); } -sub InvokeMember { - my ($this,$method,$id,$action) = @_; - - die ArgumentException->new("method","No method information provided") unless $method; - - #normalize method info - if (not ref $method) { - $method = { - method => $method - }; - } - - if (ref $method eq 'HASH') { - my $member = $method->{method} or die InvalidOpException->new("A member name isn't specified"); - my @args; - - if (my $params = $method->{parameters}) { - if (ref $params eq 'HASH') { - @args = map { - $_, - $this->MakeParameter($params->{$_},$id,$action) - } keys %$params; - } elsif (ref $params eq 'ARRAY') { - @args = map $this->MakeParameter($_,$id,$action), @$params; - } else { - @args = ($this->MakeParameter($params,$id,$action)); - } - } - return $this->target->$member(@args); - } elsif (ref $method eq TResolve) { - return $method->Invoke($this->target); - } elsif (ref $method eq 'CODE') { - return $method->($this,$id,$action); - } else { - die InvalidOpException->new("Unsupported type of the method information", ref $method); - } -} - -sub MakeParameter { - my ($this,$param,$id,$action) = @_; - - if ($param) { - if (is $param, TTransform ) { - return $param->Transform($this,$action->query); - } elsif ($param and not ref $param) { - my %std = ( - id => $id, - action => $action, - query => $action->query - ); - - return $std{$param} || $action->query->param($param); - } - } else { - return undef; - } -} - - - - 1; __END__