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12.5. Base Execution Properties
The following execution properties are shared by all translators.
| Name | Description | Default |
|---|---|---|
| Immutable | Set to true to indicate that the source never changes. | false |
| RequiresCriteria | Set to true to indicate that source SELECT/UPDATE/DELETE queries require a WHERE clause. | false |
| SupportsOrderBy | Set to true to indicate that the ORDER BY clause is supported. | false |
| SupportsOuterJoins | Set to true to indicate that OUTER JOINs are supported. | false |
| SupportsFullOuterJoins | If outer joins are supported, true indicates that FULL OUTER JOINs are supported. | false |
| SupportsInnerJoins | Set to true to indicate that INNER JOINs are supported. | false |
| SupportedJoinCriteria | If joins are supported, defines what criteria may be used as the join criteria. May be one of (ANY, THETA, EQUI, or KEY). | ANY |
| MaxInCriteriaSize | If in criteria are supported, defines what the maximum number of in entries are per predicate. -1 indicates no limit. | -1 |
| MaxDependentInPredicates | If IN criteria are supported, defines what the maximum number of predicates that can be used for a dependent join. Values less than 1 indicate to use only one IN predicate per dependent value pushed. | -1 |
|
DirectQueryProcedureName
|
f the direct query procedure is supported on the translator, this property indicates the name of the procedure.
|
native
|
|
SupportsDirectQueryProcedure
|
Set to true to indicate the translator supports the direct execution of commands
|
false
|
|
ThreadBound
|
Set to true to indicate the translator's Executions should be processed by only a single thread
|
false
|
|
CopyLobs
|
If true, then returned LOBs (clob, blob, sql/xml) will be copied by the engine in a memory-safe manner. Use this option if the source does not support memory-safe LOBs or you want to disconnect LOBs from the source connection.
|
false
|
Note
Only a subset of the supports metadata can be set through execution properties. If more control is needed, see Red Hat JBoss Data Virtualization Development Guide: Server Development.
There are no base importer settings.
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