Source code
package org.springframework.jdbc.core;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.jspecify.annotations.Nullable;
import org.springframework.jdbc.support.JdbcUtils;
/**
* Interface to be implemented for setting values for more complex database-specific
* types not supported by the standard {@code setObject} method. This is
* effectively an extended variant of {@link org.springframework.jdbc.support.SqlValue}.
*
* <p>Implementations perform the actual work of setting the actual values. They must
* implement the callback method {@code setTypeValue} which can throw SQLExceptions
* that will be caught and translated by the calling code. This callback method has
* access to the underlying Connection via the given PreparedStatement object, if that
* should be needed to create any database-specific objects.
*
* @author Thomas Risberg
* @author Juergen Hoeller
* @since 1.1
* @see java.sql.Types
* @see java.sql.PreparedStatement#setObject
* @see JdbcOperations#update(String, Object[], int[])
* @see org.springframework.jdbc.support.SqlValue
*/
public interface SqlTypeValue {
/**
* Constant that indicates an unknown (or unspecified) SQL type.
* Passed into {@code setTypeValue} if the original operation method
* does not specify an SQL type.
* @see java.sql.Types
* @see JdbcOperations#update(String, Object[])
*/
int TYPE_UNKNOWN = JdbcUtils.TYPE_UNKNOWN;
/**
* Set the type value on the given PreparedStatement.
* @param ps the PreparedStatement to work on
* @param paramIndex the index of the parameter for which we need to set the value
* @param sqlType the SQL type of the parameter we are setting
* @param typeName the type name of the parameter (optional)
* @throws SQLException if an SQLException is encountered while setting parameter values
* @see java.sql.Types
* @see java.sql.PreparedStatement#setObject
*/
void setTypeValue(PreparedStatement ps, int paramIndex, int sqlType, @Nullable String typeName)
throws SQLException;
}
Run 1
This code demonstrates excellent readability. The interface is well-structured with clear separation between documentation, constants, and the method signature. Javadoc comments are thorough and explain the purpose, parameters, and exceptions in detail. The method signature is concise yet descriptive, with clear parameter names (ps, paramIndex, sqlType, typeName) and proper use of @Nullable annotation. Nesting is minimal since this is a single interface declaration. The code follows Spring Framework conventions, making it familiar to experienced Java developers. While the Javadoc is comprehensive, it's not excessive for a public API. The single constant TYPE_UNKNOWN is well-documented. The code achieves strong clarity of intent - it clearly defines a callback interface for setting complex SQL type values. Overall, this is exemplary Java API code that balances thorough documentation with clean implementation.
Run 2
This is an exceptionally readable interface definition. The code structure is logical, with a clear separation between constants, documentation, and method signature. Nesting is nonexistent, as expected for an interface. The Javadoc comments thoroughly explain the intent, usage, and contracts, making the purpose unambiguous. Code length is appropriate—concise yet complete with necessary context. Action granularity is ideal, with a single method declaration and constant definition. Reading flow is natural, starting with the package, imports, class-level documentation, then members in a logical order. The use of proper annotations (@Nullable) and clear parameter naming further enhances clarity. Overall, this represents exemplary Java code that balances documentation with clean, minimal implementation.
Run 3
The code is highly readable. It is a concise interface definition with clear Javadoc. Structure is logical: package, imports, interface constant, and single method. Nesting is non-existent. Intent is explicit - defining a callback for setting database-specific values. Length is minimal for the functionality. Action granularity is appropriate, with one field and one method declaration. Reading flow is natural, with documentation preceding implementation details. The only minor deduction is that the Javadoc could be slightly more concise, but it is well-organized and informative.
Run 1
Code Structure: Cleanly organized into imports, interface documentation, a constant, and a single callback declaration. Nesting: Minimal, with only the interface scope and no nested control flow. Clarity of intent: Descriptive interface and method names, detailed Javadoc, and explicit nullability clearly communicate the contract; the abbreviated parameter name 'ps' is a minor weakness. Code length: The implementation is concise, though documentation contains some repetitive wording. Action granularity: Each declaration is separate, with the long method signature sensibly continued onto another line. Reading flow: Natural top-to-bottom progression and consistent formatting make the interface easy to scan; extra blank lines introduce only minor visual noise.
Run 2
Code Structure: The interface is logically organized into imports, interface documentation, a constant, and a single method contract. Nesting: There is no control-flow nesting, making it easy to scan. Clarity of intent: Descriptive naming and thorough Javadoc clearly explain the callback’s purpose, parameters, optional type name, and exception behavior; the abbreviated parameter name 'ps' is a minor weakness. Code length: The executable declarations are concise, though the documentation contains some repetitive wording. Action granularity: Each declaration has a single responsibility, with no combined actions. Reading flow: The progression from interface purpose to constant and method is natural, and the wrapped method signature remains easy to follow.
Run 3
Code Structure: Clearly organized into package, imports, interface documentation, constant, and method declaration. Nesting: Flat interface with no nested control flow. Clarity of intent: Descriptive names and detailed Javadoc explain the callback, parameters, optional type name, and exception behavior; the abbreviated parameter name 'ps' is a minor weakness. Code length: The implementation is minimal, though some documentation is repetitive. Action granularity: Each declaration has a single responsibility, with no combined actions. Reading flow: Conventional Java ordering and consistent formatting make the code easy to follow; extra blank lines introduce only minor visual noise.