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
The code is highly readable. It consists of a single, focused interface with a concise method signature and clear Javadoc. The structure is logical: package declaration, imports, class-level documentation, interface declaration, a single constant, and one method. There is no unnecessary nesting or branching. The intent is clearly communicated through descriptive naming (SqlTypeValue, setTypeValue, TYPE_UNKNOWN) and thorough documentation. The code length is minimal and appropriate. Action granularity is effectively one logical action (the method declaration) with a separate constant declaration. Reading flow is natural from the high-level purpose down to the method details.
Run 3
This code is highly readable. The package and imports are minimal and clear. The interface follows a logical structure: a type constant, then a single well-documented method. Nesting is non-existent, with methods and fields at the top level. The intent of the interface and its method is clearly explained through comprehensive Javadoc, including the purpose, parameters, and exceptions. The code length is concise while maintaining necessary documentation. Action granularity is excellent, with one clear action in the method signature. The reading flow is natural, moving from package declaration to imports, Javadoc, constant, and method definition, following standard Java conventions.
Run 1
Code Structure: A logically organized interface with imports, documentation, a constant, and a single method declaration. Nesting: Minimal nesting and no complex control flow. Clarity of intent: Descriptive names and thorough Javadoc clearly explain the callback, parameters, and exception behavior; @Nullable makes the optional type name explicit. Code length: The implementation is concise, though some documentation is repetitive and slightly verbose. Action granularity: Each declaration stands separately, with no multiple actions compressed onto one line. Reading flow: The progression from interface purpose to constant and method is natural; minor spacing inconsistencies, including extra blank lines and no separation after the package declaration, slightly reduce polish.
Run 2
Code Structure: Cleanly organized interface with imports, interface documentation, a constant, and one method declaration. Nesting: Flat, with no control-flow nesting. Clarity of intent: Descriptive interface and method names, detailed parameter documentation, and explicit nullability make the contract clear; 'ps' is slightly abbreviated. Code length: The executable declaration content is concise, though the documentation contains some repetitive wording. Action granularity: Each declaration serves one purpose, with no combined actions. Reading flow: Conventional Java ordering and consistent formatting support natural reading; minor excess blank lines and the wrapped throws clause add negligible visual friction.
Run 3
Code Structure: The interface is logically organized into imports, interface documentation, a constant, and a method declaration. Nesting: There is no nested control flow, making the code easy to scan. Clarity of intent: Descriptive names and thorough Javadoc clearly explain the interface’s purpose, parameter meanings, nullability, and exception contract; only the abbreviated parameter name 'ps' slightly reduces clarity. Code length: The implementation is minimal, though some documentation is repetitive. Action granularity: Each declaration occupies its own logical unit, with no unrelated operations combined. Reading flow: The progression from purpose to constant to callback is natural, and the wrapped method signature remains easy to follow. Minor excess whitespace and verbose documentation prevent a perfect score.