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Oracle® Fusion Middleware Java API Reference for Oracle Event Processing 11g Release 1 (11.1.1.9) E14303-12 |
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Connection to an external data-source. A connection supports a fixed set of capabilities, such as the equals function, the less-than function, the AND comparative function, etc. By default, a connection supports the equals function for all native CQL types (e.g. char, int). To specify a different set of capabilities, an ExternalConnection
must implement the interface CapabilityProvider
.
ExternalDataSource
, CapabilityProvider
Method Summary | |
void |
close() Releases all the resources acquired by Connection without any wait. |
ExternalPreparedStatement |
prepareStatement(java.lang.String relationName, java.util.List relationAttrs, ExternalPredicate predicate) Creates a ExternalPreparedStatement object for sending statements to external data-sources. |
boolean |
supportsPredicate(ExternalPredicate predicate) Return true if the connection supports the predicate . |
Method Detail |
public ExternalPreparedStatement prepareStatement(java.lang.String relationName, java.util.List relationAttrs, ExternalPredicate predicate) throws java.lang.Exception
predicate
.relationName
- name of the relation (table)relationAttrs
- attributes (columns) of the relation (table)pred
- predicate clause, or null if statement should return all tuples.public boolean supportsPredicate(ExternalPredicate predicate) throws java.lang.Exception
predicate
. The infrastructure invokes this method prior to executing a prepared statement.predicate
- public void close() throws java.lang.Exception
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