org.objectweb.medor.datasource.lib
Class TCWrapper
java.lang.Object
org.objectweb.medor.datasource.lib.TCWrapper
- All Implemented Interfaces:
- Wrapper
- public class TCWrapper
- extends java.lang.Object
- implements Wrapper
Method Summary |
long |
deleteData(QueryLeaf ql,
ParameterOperand[] parameters,
java.lang.Object connection,
EvaluationMetaData evalmd)
This method links the wrapper to a particular QueryLeaf, and executes
the delete on the underlying data store. |
TupleCollection |
fetchData(QueryLeaf ql,
ParameterOperand[] parameters,
java.lang.Object conn,
EvaluationMetaData evalmd)
This method links the wrapper to a particular QueryLeaf, and executes
the query on the underlying data store for fetching data. |
long |
updateData(QueryLeaf ql,
ParameterOperand[] parameters,
java.lang.Object connection,
EvaluationMetaData evalmd)
This method links the wrapper to a particular QueryLeaf, and executes
data updating on the underlying data store. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TCWrapper
public TCWrapper()
fetchData
public TupleCollection fetchData(QueryLeaf ql,
ParameterOperand[] parameters,
java.lang.Object conn,
EvaluationMetaData evalmd)
throws EvaluationException
- Description copied from interface:
Wrapper
- This method links the wrapper to a particular QueryLeaf, and executes
the query on the underlying data store for fetching data.
- Specified by:
fetchData
in interface Wrapper
- Parameters:
ql
- the QueryLeafparameters
- the parameters necessary for obtaining data from the
QueryLeaf (in the case the QueryLeaf contains an expression)conn
- an Object which contains information for connecting
to the DataStore behind the QueryLeaf (could be a JDBC connection, ...)s
- Returns:
- the TupleCollection containing the result of the execution.
- Throws:
EvaluationException
- in case of problems during the evaluation.
deleteData
public long deleteData(QueryLeaf ql,
ParameterOperand[] parameters,
java.lang.Object connection,
EvaluationMetaData evalmd)
throws EvaluationException
- Description copied from interface:
Wrapper
- This method links the wrapper to a particular QueryLeaf, and executes
the delete on the underlying data store.
- Specified by:
deleteData
in interface Wrapper
- Parameters:
ql
- the QueryLeafparameters
- the parameters necessary for obtaining data from the
QueryLeaf (in the case the QueryLeaf contains an expression)connection
- an Object which contains information for connecting
to the DataStore behind the QueryLeaf (could be a JDBC connection, ...)s
- Returns:
- the number of deleted tuples.
- Throws:
EvaluationException
- in case of problems during the evaluation.
updateData
public long updateData(QueryLeaf ql,
ParameterOperand[] parameters,
java.lang.Object connection,
EvaluationMetaData evalmd)
throws EvaluationException
- Description copied from interface:
Wrapper
- This method links the wrapper to a particular QueryLeaf, and executes
data updating on the underlying data store.
- Specified by:
updateData
in interface Wrapper
- Parameters:
ql
- the QueryLeafparameters
- the parameters necessary for obtaining data from the
QueryLeaf (in the case the QueryLeaf contains an expression)connection
- an Object which contains information for connecting
to the DataStore behind the QueryLeaf (could be a JDBC connection, ...)sevalmd
- MUST define the update expression with the annotation
ANNOTATION_UPDATE_EXPRESSION
- Returns:
- the number of updated tuples.
- Throws:
EvaluationException
- in case of problems during the evaluation.- See Also:
EvaluationMetaData.ANNOTATION_UPDATE_EXPRESSION