+1
quinta-feira, 26 de Março de 2015 às 17:45:12 UTC, BK escreveu:
>
> Creating/deleting edges causes the version numbers of the connected
> vertices to change, and based on Andrey Lomakin's posts, this has been the
> behavior for a while (I'm using v2.0). From his responses to similar
> questions, I've tried changing this behavior so that vertex versions remain
> unchanged when modifying edges: setting
> ridBag.embeddedToSbtreeBonsaiThreshold to -1 as a property in the console
> window as well as using `alter database custom
> ridBag.embeddedToSbtreeBonsaiThreshold=-1`. The vertex versions are still
> being changed.
>
> 1. If this behavior is still configurable, what are the specific steps to
> configure it?
> 2. Can someone also provide a little more information about the pros/cons
> of such a configuration, and why the default is that edge changes affect
> the vertex versions?
>
> Thanks!
>
> Example showing version changes:
> orientdb {db=zDummy}> create class TestItem extends V
> Class created successfully. Total classes in database now: 13
> orientdb {db=zDummy}> create class TestEdge extends E
> Class created successfully. Total classes in database now: 14
>
> orientdb {db=zDummy}> insert into TestItem set name = "TestItem 0"
> Inserted record 'TestItem#13:0{name:TestItem 0} v1' in 0.002000 sec(s).
> orientdb {db=zDummy}> insert into TestItem set name = "TestItem 1"
> Inserted record 'TestItem#13:1{name:TestItem 1} v1' in 0.001000 sec(s).
> orientdb {db=zDummy}> select from TestItem
>
> ----+-----+--------+----------
> # |@RID |@CLASS |name
> ----+-----+--------+----------
> 0 |#13:0|TestItem|TestItem 0
> 1 |#13:1|TestItem|TestItem 1
> ----+-----+--------+----------
>
> 2 item(s) found. Query executed in 0.002 sec(s).
> orientdb {db=zDummy}> display 0
>
>
> +-------------------------------------------------------------------------------------------------+
> | Document - @class: TestItem @rid: #13:0
> @version: 1 |
>
> +-------------------------------------------------------------------------------------------------+
> | Name | Value
> |
>
> +-------------------------------------------------------------------------------------------------+
> | name | TestItem 0
> |
>
> +-------------------------------------------------------------------------------------------------+
>
> orientdb {db=zDummy}> display 1
>
>
> +-------------------------------------------------------------------------------------------------+
> | Document - @class: TestItem @rid: #13:1
> @version: 1 |
>
> +-------------------------------------------------------------------------------------------------+
> | Name | Value
> |
>
> +-------------------------------------------------------------------------------------------------+
> | name | TestItem 1
> |
>
> +-------------------------------------------------------------------------------------------------+
>
> orientdb {db=zDummy}> create edge TestEdge from #13:0 to #13:1
> Created edge '[TestEdge#14:0{out:#13:0,in:#13:1} v3]' in 0.004000 sec(s).
>
> orientdb {db=zDummy}> select from TestItem
>
> ----+-----+--------+----------+------------+-----------
> # |@RID |@CLASS |name |out_TestEdge|in_TestEdge
> ----+-----+--------+----------+------------+-----------
> 0 |#13:0|TestItem|TestItem 0|[size=1] |null
> 1 |#13:1|TestItem|TestItem 1|null |[size=1]
> ----+-----+--------+----------+------------+-----------
>
> 2 item(s) found. Query executed in 0.001 sec(s).
> orientdb {db=zDummy}> display 0
>
>
> +-------------------------------------------------------------------------------------------------+
> | Document - @class: TestItem @rid: #13:0
> @version: 2 |
>
> +-------------------------------------------------------------------------------------------------+
> | Name | Value
> |
>
> +-------------------------------------------------------------------------------------------------+
> | name | TestItem 0
> |
> | out_TestEdge | [#14:0]
> |
>
> +-------------------------------------------------------------------------------------------------+
>
> orientdb {db=zDummy}> display 1
>
>
> +-------------------------------------------------------------------------------------------------+
> | Document - @class: TestItem @rid: #13:1
> @version: 2 |
>
> +-------------------------------------------------------------------------------------------------+
> | Name | Value
> |
>
> +-------------------------------------------------------------------------------------------------+
> | name | TestItem 1
> |
> | in_TestEdge | [#14:0]
> |
>
> +-------------------------------------------------------------------------------------------------+
>
> orientdb {db=zDummy}> delete edge #14:0
> Delete record(s) '1' in 0.003000 sec(s).
>
> orientdb {db=zDummy}> select from TestItem
>
> ----+-----+--------+------------+----------+-----------
> # |@RID |@CLASS |out_TestEdge|name |in_TestEdge
> ----+-----+--------+------------+----------+-----------
> 0 |#13:0|TestItem|[size=0] |TestItem 0|null
> 1 |#13:1|TestItem|null |TestItem 1|[size=0]
> ----+-----+--------+------------+----------+-----------
>
> 2 item(s) found. Query executed in 0.001 sec(s).
> orientdb {db=zDummy}> display 0
>
>
> +-------------------------------------------------------------------------------------------------+
> | Document - @class: TestItem @rid: #13:0
> @version: 3 |
>
> +-------------------------------------------------------------------------------------------------+
> | Name | Value
> |
>
> +-------------------------------------------------------------------------------------------------+
> | out_TestEdge | []
> |
> | name | TestItem 0
> |
>
> +-------------------------------------------------------------------------------------------------+
>
> orientdb {db=zDummy}> display 1
>
>
> +-------------------------------------------------------------------------------------------------+
> | Document - @class: TestItem @rid: #13:1
> @version: 3 |
>
> +-------------------------------------------------------------------------------------------------+
> | Name | Value
> |
>
> +-------------------------------------------------------------------------------------------------+
> | in_TestEdge | []
> |
> | name | TestItem 1
> |
>
> +-------------------------------------------------------------------------------------------------+
>
> orientdb {db=zDummy}> properties
> PROPERTIES:
> +-------------------------------+--------------------------------+
> | NAME | VALUE |
> +-------------------------------+--------------------------------+
> | collectionMaxItems | 10 |
> | backupBufferSize | 1048576 |
> | debug | false |
> | backupCompressionLevel | 9 |
> | limit | 20 |
> | width | 150 |
> | maxBinaryDisplay | 150 |
> | ignoreErrors | false |
> | ridBag.embeddedToSbtreeBonsaiThreshold| -1 |
> | verbose | 2 |
> +-------------------------------+--------------------------------+
>
> orientdb {db=zDummy}> config
>
> LOCAL SERVER CONFIGURATION:
> +------------------------------------+--------------------------------+
> | NAME | VALUE |
> +------------------------------------+--------------------------------+
> ...
> | ridBag.sbtreeBonsaiToEmbeddedToThreshold= -1
> |
> ...
> +------------------------------------+--------------------------------+
>
>
>
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