SqlAttributesContext
Map of keys and value strings extracted with a SqlAttributesFilter.
The content corresponds to the key-value pairs for a single row.
Properties
The context is named sqlAttributes and is accessible at ${contexts.sqlAttributes}.
The property keys are the names of the columns in the row.
For example, if the columns are username and password,
access the username as ${contexts.sqlAttributes.row.username}
and the password as ${contexts.sqlAttributes.row.password}.