[fdo-internals] King Oracle Issue

Zac Spitzer zac.spitzer at gmail.com
Wed Jun 17 05:20:17 EDT 2009


On Wed, Jun 17, 2009 at 7:08 PM, Haris Kurtagic<haris at sl-king.com> wrote:
> We could use OracleSchema for FDO schema but again there will inconsistency between providers. In best case Default.SHPFile will become OracleOwner.SHPFile. Using OracleSchema as FDO schema name was my first choice when I wrote provider. Later I changed it, not sure why right now. I guess having all tables accessible to that Oracle user in one FDO schema was appealing too.

you could always keep kingOra as the full schema, as a choice

> And still there is case with multiple geometries in same table ?

then stick with your solution

zac.roads.centerline  == zac:roads~centerline
zac.roads.cabling == zac:roads~cabling

whilst a table with only one geom column would be exposed as
zac.cadastre == zac:cadastre

how does fdo2fdo handle these multiple geometries when copying?

>
> I don't quite understand your question, but oracle and pooling is not related to FDO names creation or FDO caching.
>
> In case of FDO application which would use different users (with different privileges) to connect to Oracle they will see different Oracle table.
> Because of that if I would use some naming convention which doesn't take in count Oracle schema ,table name and column name it could end up with having same FDO class name in those two connections pointing to different Oracle tables, which is not good I believe.
>
> Haris
>
>
>
> -----Original Message-----
> From: fdo-internals-bounces at lists.osgeo.org [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Zac Spitzer
> Sent: Wednesday, June 17, 2009 10:34 AM
> To: FDO Internals Mail List
> Subject: Re: [fdo-internals] King Oracle Issue
>
> On Wed, Jun 17, 2009 at 6:32 PM, Haris Kurtagic<haris at sl-king.com> wrote:
>> If I understood correctly ticket PostGIS provider will set FDO class name same as table name.
>> That logic alone is not enough if there are multiple tables with same name in different Postgre Schemas.
>
> simply using use the database schema rather than kingOra solves that problem?
>
>> As you mentioned, there is also case with more than one geometry column in table.
>>
>> I read your blog post. In point 4. you wrote "Coz if the are multiple geometries, FDO requires
>> to know which one is the identifier". That is not case for King.Oracle, ~column_name name is just about generating unique name inside one FDO schema. Provider uses different way to know which Oracle schema, table name and column name are used for that particular FDO class.
>>
>> I read also email thread and see that many don't like how is naming done (using metadata table it can be done in any way you want). Perhaps I should change something ( I am not fan of '~' character but I am fan of consistent and accurate).
>>
>> I could change that in cases where is only one Oracle table name then I will use that name for
>> like: OracleSchema.OracleTable == KingOra.OracleTable
>
> or
> OracleSchema.OracleTable FDO Schema=OracleSchema FDO Class=OracleTable
>
>> But there could be another problem with this approach. Name of FDO class representing particular Oracle table could be different depending of connection properties. Good reason for using unique OracleSchema~OracleTable for FDO class and reason is that no meter what connection properties you use to connect to Oracle, you know that you are accessing particular Oracle physical table.
>
> my understanding is that oracle handles this transparently with pooling and
> with mapguide different connection strings, mean you would be using a different
> featuresource which is the only level where caching starts?
>
>>
>> Still there would be inconsistency across providers because of FDO Schema Names. I believe inconsistency can come also from allowed characters in filenames and table names.
>>
>> I think, that only way to do across providers it is to have additional metadata. But that is something we don't like in many cases.
>>
>> Haris
>>
>> -----Original Message-----
>> From: fdo-internals-bounces at lists.osgeo.org [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Zac Spitzer
>> Sent: Wednesday, June 17, 2009 4:24 AM
>> To: FDO Internals Mail List
>> Subject: Re: [fdo-internals] King Oracle Issue
>>
>> Wasn't the main reason for this approach tables with multiple geometry columns?
>>
>> It's a real pain and makes FDO really inconsistant as an abstraction layer...
>>
>> The FDO PostGIS provider does this in a nice transparent fashion
>>
>> http://zacster.blogspot.com/2008/08/some-ponderings-on-fdo-schemas.html
>>
>> z
>>
>>
>>
>> On Tue, Jun 16, 2009 at 8:53 PM, Haris Kurtagic<haris at sl-king.com> wrote:
>>> Hi Tomas,
>>>
>>>
>>>
>>> Regarding names of FDO classes and their representation in underlying data
>>> store is something which could be pain but I don't see right solution (other
>>> then use of additional metadata to describe generated name for FDO class).
>>> It is not only problem of King.Oracle or rdbms providers but also files.
>>> There are some steps in King.Oracle that could create names of FDO classes
>>> which would more look like original, but no 100% solution.
>>>
>>>
>>>
>>> KingFdoClass is metadata table which works and we use it a lot. You need to
>>> add row to it after creating table in Oracle. Row in KingFdoClass metadata
>>> table will not be auto added with apply schema command.
>>>
>>>
>>>
>>> - Schema is cached because of performance reasons. Right now it is necessary
>>> because of extensive use of DescribeSchema command by current FDO clients. I
>>> would much more prefer that schema would not be cached but right now it
>>> would not be practical.
>>>
>>>
>>>
>>> - Perhaps we changed something. As far as I remember it was different
>>> schema.
>>>
>>>
>>>
>>> - I was thinking about auto-updating metadata table with apply schema. But
>>> there are few scenarios in which it would not be possible. Also trough our
>>> experience of use of provider in our projects we realized we don't need it.
>>>
>>>
>>>
>>> Haris
>>>
>>>
>>>
>>> From: fdo-internals-bounces at lists.osgeo.org
>>> [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Thomas Knoell
>>> Sent: Monday, June 15, 2009 9:43 PM
>>> To: 'FDO Internals Mail List'
>>> Subject: RE: [fdo-internals] King Oracle Issue
>>>
>>>
>>>
>>> Hi Haris,
>>>
>>>
>>>
>>> I got by the describe schema issue I had with the King Oracle provider.
>>> Executing the describe schema command after applying the schema now works
>>> fine.
>>>
>>>
>>>
>>> One thing that is unpleasant is the fact that the describe-schema
>>> implementation in the provider returns class names for feature classes that
>>> do not match the original class name: the new name is a combination of data
>>> store, class and geometry property name, all concatenated by a hyphen (for
>>> example DB1~MYCLASS~GEOM). That means that the application needs a provider
>>> specific implementation where the original class name can be mapped to the
>>> one the King Oracle provider uses.
>>>
>>>
>>>
>>> The link you provided in a previous mail describes a possibility to define a
>>> new class name of an existing geometry table using a King Oracle meta data
>>> table and hence providing a workaround to the fact that feature class names
>>> are altered. I applied this to the feature classes I created with the
>>> apply-schema command but it did not work: rather than replacing the name
>>> (for example) DB1~MYCLASS~GEOM with NewClass, it actually returns two
>>> classes now: DB1~MYCLASS~GEOM and NewClass (for which no table actually
>>> exists). Since the site you point to mentions that this option is in a BETA
>>> release status, I assume that either this may not be supported yet or I had
>>> an incorrect expectation. Could you please comment on this.
>>>
>>>
>>>
>>> There are a couple of other issues with this meta data table:
>>>
>>>
>>>
>>> Ø  I updated the meta data table from the application after successfully
>>> applying the schema. Unfortunately, to have those changes take effect, I
>>> have to close and re-open the connection. before executing the describe
>>> schema command. I believe this should not be necessary.
>>>
>>> Ø  Your site states that non feature classes identified via the meta data
>>> table belong to a schema named KingFdoClass. This is currently not the case
>>> as those classes are listed as members of the schema KingOra. Will this
>>> change for the final release?
>>>
>>>
>>>
>>> In my last mail I asked whether or not you plan to automatically maintain
>>> the meta data table if a schema is applied. Can you please comment on this
>>> as well?
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>>
>>>   Thomas
>>>
>>>
>>>
>>> From: fdo-internals-bounces at lists.osgeo.org
>>> [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Thomas Knoell
>>> Sent: June-10-09 5:21 PM
>>> To: 'FDO Internals Mail List'
>>> Subject: RE: [fdo-internals] King Oracle Issue
>>>
>>>
>>>
>>> Hi Haris,
>>>
>>>
>>>
>>> Thanks for the provided link, that is helpful.
>>>
>>>
>>>
>>> I created the table, added the information to the connection string and
>>> executed the test. I noted that the ApplySchema command is not adding any
>>> specified non feature classes to that table. Since the link you provided
>>> indicates that this is in Beta release at this point, is your final version
>>> enhancing your ApplySchema command implementation to automatically update
>>> this table for non feature classes?
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>>
>>>   Thomas
>>>
>>>
>>>
>>> From: fdo-internals-bounces at lists.osgeo.org
>>> [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Haris Kurtagic
>>> Sent: June-10-09 5:01 PM
>>> To: FDO Internals Mail List
>>> Subject: RE: [fdo-internals] King Oracle Issue
>>>
>>>
>>>
>>> For tables which are not in sdo_geom_metadata you need to add them using
>>> "KingFdoClass" table (http://www.sl-king.com/fdooracle/KingFdoClass.htm).
>>>
>>>
>>>
>>> One reason I can remember right now for not working, would be because FDO
>>> schema is cached. You would need to restart provider ( there is also
>>> non-standard FDO function in King.Oracle connection).
>>>
>>> Haris
>>>
>>>
>>>
>>> From: fdo-internals-bounces at lists.osgeo.org
>>> [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Thomas Knoell
>>> Sent: Wednesday, June 10, 2009 10:13 PM
>>> To: 'FDO Internals Mail List'
>>> Subject: RE: [fdo-internals] King Oracle Issue
>>>
>>>
>>>
>>> Hi Haris,
>>>
>>>
>>>
>>> Here are the answers to your questions:
>>>
>>>
>>>
>>>>> How did you applied schema ? You mention feature and non-feature class ?
>>>
>>>
>>>
>>> I executed the apply schema command (see below) from the FDO application.
>>> The schema that is defined and then applied contains a FdoFeatureClass and
>>> FdoClass. The application has to work with data stores that contain tables
>>> with and without spatial information and must be able to maintain them. That
>>> is why the test schema contains both classes.
>>>
>>>
>>>
>>>>> You applied Autodesk schema , metadata tables?
>>>
>>>
>>>
>>> The original data store did not contain any tables. However, since you
>>> mentioned it here, I added the f_* tables and tried it again - same result.
>>>
>>>
>>>
>>>>> In King.Oracle for Oracle Table to become available as FDO class the
>>>>> table has to be in sdo_geom_metadata . You did that ?
>>>
>>>>> Of 'course Oracle user you are using to connect has to see those tables
>>>>> etc...
>>>
>>>
>>>
>>> Since the schema was applied with the FdoIApplySchema interface, this should
>>> have been taken care of automatically. I checked and the feature class table
>>> does show up in sdo_geom_metadata. Obviously, the non feature class does
>>> not. And the Oracle user the application is connecting to can see those
>>> tables. So, are you saying that if I connect to an Oracle data store that
>>> does have tables without spatial information, I would not be able to use the
>>> insert/delete/update commands to maintain them when working with the King
>>> Oracle provider?
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>>
>>>   Thomas
>>>
>>>
>>>
>>>
>>>
>>>       FdoPtr<FdoIApplySchema> apply_schema_cmd =
>>>
>>>         (FdoIApplySchema*) fdo_connection->CreateCommand(
>>>
>>>
>>>   FdoCommandType_ApplySchema);
>>>
>>>       FdoPtr<FdoFeatureSchemaCollection> schemas =
>>>
>>>
>>> FdoFeatureSchemaCollection::Create(NULL);
>>>
>>>          FdoPtr<FdoFeatureSchema> schema  =
>>>
>>>                 FdoFeatureSchema::Create(L"TestSchema", L"Test Schema");
>>>
>>>       FdoPtr<FdoClassCollection> classes = schema->GetClasses();
>>>
>>>
>>>
>>>       printf("   -> Defining feature class fc \n");
>>>
>>>
>>>
>>>          FdoPtr<FdoFeatureClass> fc_class = FdoFeatureClass::Create(L"fc",
>>> L"fc");
>>>
>>>          fc_class->SetIsAbstract(false);
>>>
>>>
>>>
>>>       FdoPropertyDefinitionCollection *data_property_definitions =
>>>
>>>
>>> fc_class->GetProperties();
>>>
>>>       FdoDataPropertyDefinitionCollection *id_property_definitions =
>>>
>>>
>>> fc_class->GetIdentityProperties();
>>>
>>>
>>>
>>>       FdoDataPropertyDefinition *data_property_definition =
>>>
>>>                     FdoDataPropertyDefinition::Create(L"IdProp", L"IdProp");
>>>
>>>          data_property_definition->SetDataType(FdoDataType_Int64);
>>>
>>>          data_property_definition->SetNullable(false);
>>>
>>>       data_property_definition->SetIsAutoGenerated(true);
>>>
>>>       data_property_definitions->Add(data_property_definition);
>>>
>>>       id_property_definitions->Add(data_property_definition);
>>>
>>>       FDO_SAFE_RELEASE(data_property_definition);
>>>
>>>
>>>
>>>       data_property_definition =
>>>
>>>                     FdoDataPropertyDefinition::Create(L"Prop1", L"Prop1");
>>>
>>>          data_property_definition->SetDataType(FdoDataType_Int32);
>>>
>>>          data_property_definition->SetNullable(true);
>>>
>>>       data_property_definition->SetIsAutoGenerated(false);
>>>
>>>       data_property_definitions->Add(data_property_definition);
>>>
>>>       FDO_SAFE_RELEASE(data_property_definition);
>>>
>>>
>>>
>>>       FdoGeometricPropertyDefinition *geometric_property_definition =
>>>
>>>
>>> FdoGeometricPropertyDefinition::Create(L"GProp",L"GProp");
>>>
>>>       geometric_property_definition->SetGeometryTypes(
>>>
>>>                                                 FdoGeometricType_Point   |
>>>
>>>                                                 FdoGeometricType_Curve   |
>>>
>>>                                                 FdoGeometricType_Surface |
>>>
>>>                                                 FdoGeometricType_Solid
>>> );
>>>
>>>       geometric_property_definition->SetHasElevation(true);
>>>
>>>          data_property_definitions->Add(geometric_property_definition);
>>>
>>>       fc_class->SetGeometryProperty(geometric_property_definition);
>>>
>>>          FDO_SAFE_RELEASE(geometric_property_definition);
>>>
>>>       FDO_SAFE_RELEASE(id_property_definitions);
>>>
>>>       FDO_SAFE_RELEASE(data_property_definitions);
>>>
>>>
>>>
>>>       fc_class->SetBaseClass(NULL);
>>>
>>>       classes->Add(fc_class);
>>>
>>>
>>>
>>>       printf("   -> Defining non feature class nfc \n");
>>>
>>>
>>>
>>>          FdoPtr<FdoClass> nfc_class = FdoClass::Create(L"nfc", L"nfc");
>>>
>>>          nfc_class->SetIsAbstract(false);
>>>
>>>
>>>
>>>       data_property_definitions = nfc_class->GetProperties();
>>>
>>>       id_property_definitions   = nfc_class->GetIdentityProperties();
>>>
>>>
>>>
>>>       data_property_definition =
>>>
>>>                     FdoDataPropertyDefinition::Create(L"IdProp", L"IdProp");
>>>
>>>          data_property_definition->SetDataType(FdoDataType_Int32);
>>>
>>>          data_property_definition->SetNullable(false);
>>>
>>>       data_property_definition->SetIsAutoGenerated(false);
>>>
>>>       data_property_definitions->Add(data_property_definition);
>>>
>>>       id_property_definitions->Add(data_property_definition);
>>>
>>>       FDO_SAFE_RELEASE(data_property_definition);
>>>
>>>
>>>
>>>       data_property_definition =
>>>
>>>                     FdoDataPropertyDefinition::Create(L"Prop1", L"Prop1");
>>>
>>>          data_property_definition->SetDataType(FdoDataType_Int32);
>>>
>>>          data_property_definition->SetNullable(true);
>>>
>>>       data_property_definition->SetIsAutoGenerated(false);
>>>
>>>       data_property_definitions->Add(data_property_definition);
>>>
>>>       FDO_SAFE_RELEASE(data_property_definition);
>>>
>>>       FDO_SAFE_RELEASE(id_property_definitions);
>>>
>>>       FDO_SAFE_RELEASE(data_property_definitions);
>>>
>>>
>>>
>>>       nfc_class->SetBaseClass(NULL);
>>>
>>>       classes->Add(nfc_class);
>>>
>>>
>>>
>>>       schemas->Add(schema);
>>>
>>>
>>>
>>>       printf("   -> Applying the schema \n");
>>>
>>>       apply_schema_cmd->SetFeatureSchema(schema);
>>>
>>>       apply_schema_cmd->Execute();
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> From: fdo-internals-bounces at lists.osgeo.org
>>> [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Haris Kurtagic
>>> Sent: June-10-09 3:28 PM
>>> To: FDO Internals Mail List
>>> Subject: RE: [fdo-internals] King Oracle Issue
>>>
>>>
>>>
>>> How did you applied schema ? You mention feature and non-feature class ? You
>>> applied Autodesk schema , metadata tables?
>>>
>>>
>>>
>>> In King.Oracle for Oracle Table to become available as FDO class the table
>>> has to be in sdo_geom_metadata . You did that ?
>>>
>>> Of 'course Oracle user you are using to connect has to see those tables
>>> etc...
>>>
>>>
>>>
>>> Haris
>>>
>>>
>>>
>>> From: fdo-internals-bounces at lists.osgeo.org
>>> [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Thomas Knoell
>>> Sent: Wednesday, June 10, 2009 8:42 PM
>>> To: fdo-internals at lists.osgeo.org
>>> Subject: [fdo-internals] King Oracle Issue
>>>
>>>
>>>
>>> Hi,
>>>
>>>
>>>
>>> I am working on a FDO based application that should use the King Oracle
>>> Provider to connect to a data source on an Oracle 11g instance. The
>>> application currently connects fine to an empty data store (the data store
>>> does not contain any tables) and successfully applies a test schema that
>>> consists of a feature and a non feature class. The problem arises in the
>>> following step where a describe schema request is executed. In this case,
>>> the result is one schema named KingOra and no classes. I expected the test
>>> schema and its corresponding classes being reported.
>>>
>>>
>>>
>>> The application has access to all the DLLs that come with FDO. The DLLs were
>>> created by compiling the projects from the trunk in release mode. Due to the
>>> fact that I use MS Visual Studio C++ 2008 Express Edition, I had to open
>>> each solution and compile it separately as some of the projects referenced
>>> MFC files that are not available with the Express Edition. Those issues were
>>> corrected in the shadow and all builds succeeded.
>>>
>>>
>>>
>>> Besides the changes to eliminate MFC references, one additional change was
>>> required in the King Oracle provider project in that the references to
>>> Oracle 10 libs were replaced by the corresponding Oracle 11 ones.
>>>
>>>
>>>
>>> Using the command built.bat -c=release -a=install -o=c:\FdoHome on the FDO
>>> and ThirdParty directory, all DLLs were copied into the specified folder and
>>> hence made accessible to the FDO application.
>>>
>>>
>>>
>>> The providers.xml file was modified to include the following statement for
>>> the King Oracle Provider:
>>>
>>>
>>>
>>>   <FeatureProvider>
>>>
>>>     <Name>King.Oracle.3.5</Name>
>>>
>>>     <DisplayName>King Provider for Oracle</DisplayName>
>>>
>>>     <Description>Read/write access to spatial and attribute data in an
>>> Oracle Spatial.</Description>
>>>
>>>     <IsManaged>False</IsManaged>
>>>
>>>     <Version>3.5.0.0</Version>
>>>
>>>     <FeatureDataObjectsVersion>3.5.0.0</FeatureDataObjectsVersion>
>>>
>>>     <LibraryPath>.\KingOracleProvider.dll</LibraryPath>
>>>
>>>   </FeatureProvider>
>>>
>>>
>>>
>>> I did perform some debugging on the code. When following the statement that
>>> retrieves the schema name (see code below), I noted that it does not hit the
>>> function that implements the retrieval of the schema name but ends up in the
>>> function FdoCollection::GetCount() (file
>>> FDO\Unmanaged\Inc\Common\Collection.h). However, following other requests
>>> like the apply schema execute or the describe schema execute call, the
>>> correct functions are hit and executed. I also did some dependency checks on
>>> some DLLs and executables and nothing missing was reported.
>>>
>>>
>>>
>>> I assume that this may be just a simple setup issue but after trying
>>> multiple things now, I reached a point where I am not sure what to try next.
>>> If someone has any suggestions I would appreciate the feedback. Also, if
>>> there are additional questions, please let me know.
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>>
>>>   Thomas
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>       FdoPtr<FdoIDescribeSchema> describe_schema_cmd =
>>>
>>>         (FdoIDescribeSchema*) fdo_connection->CreateCommand(
>>>
>>>
>>> FdoCommandType_DescribeSchema);
>>>
>>>       FdoFeatureSchemasP schema_collection = describe_schema_cmd->Execute();
>>>
>>>       FdoInt32 schema_count = schema_collection->GetCount();
>>>
>>>       if (schema_count == 0)
>>>
>>>           printf("   -> No schemas found \n");
>>>
>>>       else
>>>
>>>         for (int s = 0; s < schema_count; s++) {
>>>
>>>
>>>
>>>           FdoFeatureSchemaP curr_schema = schema_collection->GetItem(s);
>>>
>>>           FdoStringP curr_schema_name = curr_schema->GetName();
>>>
>>>           printf("   -> Schema[%d]: %ls \n", s, (FdoString
>>> *)curr_schema_name);
>>>
>>>           FdoPtr<FdoClassCollection> curr_schema_classes =
>>>
>>>                                                 curr_schema->GetClasses();
>>>
>>>           FdoInt32 curr_schema_class_count =
>>> curr_schema_classes->GetCount();
>>>
>>>           if (curr_schema_class_count == 0)
>>>
>>>               printf("     -> No classes found for current schema \n");
>>>
>>>           else
>>>
>>>             for (int sc = 0; sc < curr_schema_class_count; sc++) {
>>>
>>>
>>>
>>>               FdoPtr<FdoClassDefinition> curr_schema_class =
>>>
>>>
>>> curr_schema_classes->GetItem(sc);
>>>
>>>               FdoStringP curr_schema_class_name =
>>> curr_schema_class->GetName();
>>>
>>>               printf("     -> Class[%d]: %ls \n",
>>>
>>>                      sc,
>>>
>>>                      (FdoString *)curr_schema_class_name);
>>>
>>>
>>>
>>>             }  //  for (int sc = 0; ...
>>>
>>>
>>>
>>>         }  //  for (int s = 0; ...
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> fdo-internals mailing list
>>> fdo-internals at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/fdo-internals
>>>
>>>
>>
>>
>>
>> --
>> Zac Spitzer -
>> http://zacster.blogspot.com
>> +61 405 847 168
>> _______________________________________________
>> fdo-internals mailing list
>> fdo-internals at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/fdo-internals
>> _______________________________________________
>> fdo-internals mailing list
>> fdo-internals at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/fdo-internals
>>
>
>
>
> --
> Zac Spitzer -
> http://zacster.blogspot.com
> +61 405 847 168
> _______________________________________________
> fdo-internals mailing list
> fdo-internals at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/fdo-internals
> _______________________________________________
> fdo-internals mailing list
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> http://lists.osgeo.org/mailman/listinfo/fdo-internals
>



-- 
Zac Spitzer -
http://zacster.blogspot.com
+61 405 847 168


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