oracle.ucp

Interface ConnectionRetrievalInfo

All Known Implementing Classes:

JDBCConnectionRetrievalInfo, OracleJDBCConnectionRetrievalInfo

public interface ConnectionRetrievalInfo

The connection retrieval info object is used by the connection factory adapter to create connections. It contains resource-specific information that the connection factory adapter uses to create connections. For example, the JDBC connection retrieval info object maintains the user and password that are used to create a connection from a JDBC resource.

The connection retrieval info object also provides methods for equality and hash so that like-connections can be pooled efficiently.

The connection retrieval object supports Connection Labeling, a common mechanism for all types of connections. Represented as key/value pairs, connection labels are used for application-driven connection matching purposes.

See Also:

ConnectionFactoryAdapter

Method Summary

Modifier and Type	Method and Description
void	addLabel(String key, String value) Adds a connection label to this connection retrieval info object.
boolean	equals(Object other) Checks whether this instance is equal to another.
ConnectionRetrievalInfo	getCopyWithNoLabels() Clones this connection retrieval object but removes all the connection labels associated.
Properties	getLabels() Retrieves all the connection labels stored on this connection retrieval info object.
int	hashCode() Returns the hashCode of the ConnectionRequestInfo.
void	removeLabel(String key) Removes the connection label with the given key from this connection retrieval info object.

Method Detail

equals

boolean equals(Object other)

Checks whether this instance is equal to another. This method must be implemented since ConnectionRetrievalInfo is defined specific to the type of object being pooled. The conditions for equality are specific to the type of object being pooled.

Overrides:

equals in class Object

Returns:

true if the two instances are equal; false otherwise.

hashCode

int hashCode()

Returns the hashCode of the ConnectionRequestInfo.

Overrides:

hashCode in class Object

Returns:

The hash code of this instance.

addLabel

void addLabel(String key,
              String value)
       throws UniversalConnectionPoolException

Adds a connection label to this connection retrieval info object. This can be used for both requested labels during a connection borrowing request or actual labels applied on a borrowed connection. The addition of connection labels is cumulative; the supplied key/value pair is added to those connection labels already on this object each time this method is called. However, for each particular label key, only the last applied value is retained.

Parameters:

key - The key of the connection label to be added. Cannot be null or an empty string.

value - The value of the connection label to be added. Can be null or an empty string.

Throws:

UniversalConnectionPoolException - If the key is null or an empty string.

removeLabel

void removeLabel(String key)
          throws UniversalConnectionPoolException

Removes the connection label with the given key from this connection retrieval info object. This method does nothing if there is no label stored on this object with the specified key.

Parameters:

key - The key of the connection label to be removed. Cannot be null or an empty string.

Throws:

UniversalConnectionPoolException - If the key is null or an empty string.

getCopyWithNoLabels

ConnectionRetrievalInfo getCopyWithNoLabels()

Clones this connection retrieval object but removes all the connection labels associated.

Returns:

A clone ConnectionRetrievalInfo object with all connection labels removed.

getLabels

Properties getLabels()

Retrieves all the connection labels stored on this connection retrieval info object. Any change to the result Properties object does not affect the stored labels.

Returns:

A java.util.Properties object storing all the stored labels as key/value pairs. Returns null if there are no stored labels on this connection retrieval info object.