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This interface allows tag handlers implementing it to receive values for parameter markers in their SQL statements.
This interface is implemented by both <sql:query> and
is called by nested parameter actions (such as <sql:param>)
PreparedStatement parameter values for
"?" parameter markers in the SQL statement of the enclosing
The given parameter values are converted to their corresponding SQL type (following the rules in the JDBC specification) before they are sent to the database.
Keeping track of the index of the parameter values being added is the responsibility of the tag handler implementing this interface
SQLExcecutionTag interface is exposed in order
to support custom parameter actions which may retrieve their
parameters from any source and process them before substituting
them for a parameter marker in the SQL statement of the
PreparedStatement.setObject(int, Object). For each tag invocation, the integral index passed logically to
setObject()must begin with 1 and must be incremented by 1 for each subsequent invocation of
addSQLParameter(). The Object logically passed to
setObject()must be the unmodified object received in the value argument.