Document the fact that attributes on the connection URL trump attributes
specified in a connection Properties object.
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Key: DERBY-5516
URL: https://issues.apache.org/jira/browse/DERBY-5516
Project: Derby
Issue Type: Improvement
Components: Documentation, JDBC
Affects Versions: 10.9.0.0
Reporter: Rick Hillegas
Attributes for a Derby connection can be set via semicolon-separated lists on
the connection url as well as in a Properties object passed to the
java.sql.DriverManager.getConnection() and java.sql.Driver.connect() methods.
The JDBC spec does not indicate what should happen if an attribute is specified
both on the connection url and in the Properties object. For some databases,
like Derby, the attributes on the connection url trump the attributes in the
Properties object. For other databases, like MySQL, the reverse is true.
Because the JDBC spec does not dictate standard behavior here, we should
document what Derby does. This information would be useful in some or all of
the following sections:
Reference Manual:
Setting attributes for the database connection URL
Attributes of the Derby database connection URL
java.sql.Driver interface
java.sql.DriverManager.getConnection method
Developer's Guide:
Working with the database connection URL attributes
Specifying attributes in a properties object
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