Java Module java.sql Package java.sql Interface Struct（JDK11）

157 阅读 0 评论 0 点赞

All Known Implementing Classes:

SerialStruct
```
public interface Struct
```
The standard mapping in the Java programming language for an SQL structured type. A Struct object contains a value for each attribute of the SQL structured type that it represents. By default, an instance ofStruct is valid as long as the application has a reference to it.

All methods on the Struct interface must be fully implemented if the JDBC driver supports the data type.

Since:

1.2

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object[]`	`getAttributes()`	Produces the ordered values of the attributes of the SQL structured type that this `Struct` object represents.
`Object[]`	`getAttributes(Map<String,Class<?>> map)`	Produces the ordered values of the attributes of the SQL structured type that this `Struct` object represents.
`String`	`getSQLTypeName()`	Retrieves the SQL type name of the SQL structured type that this `Struct` object represents.

- Method Detail
  - getSQLTypeName
```
String getSQLTypeName()
               throws SQLException
```
    Retrieves the SQL type name of the SQL structured type that this Struct object represents.
    
    Returns:
    
    the fully-qualified type name of the SQL structured type for which this Struct object is the generic representation
    
    Throws:
    
    SQLException - if a database access error occurs
    
    SQLFeatureNotSupportedException - if the JDBC driver does not support this method
    
    Since:
    
    1.2
  - getAttributes
```
Object[] getAttributes()
                throws SQLException
```
    Produces the ordered values of the attributes of the SQL structured type that this Struct object represents. As individual attributes are processed, this method uses the type map associated with the connection for customizations of the type mappings. If there is no entry in the connection's type map that matches the structured type that an attribute represents, the driver uses the standard mapping.
    Conceptually, this method calls the method getObject on each attribute of the structured type and returns a Java array containing the result.
    
    Returns:
    
    an array containing the ordered attribute values
    
    Throws:
    
    SQLException - if a database access error occurs
    
    SQLFeatureNotSupportedException - if the JDBC driver does not support this method
    
    Since:
    
    1.2
  - getAttributes
```
Object[] getAttributes(Map<String,Class<?>> map)
                throws SQLException
```
    Produces the ordered values of the attributes of the SQL structured type that this Struct object represents. As individual attributes are processed, this method uses the given type map for customizations of the type mappings. If there is no entry in the given type map that matches the structured type that an attribute represents, the driver uses the standard mapping. This method never uses the type map associated with the connection.
    Conceptually, this method calls the method getObject on each attribute of the structured type and returns a Java array containing the result.
    
    Parameters:
    
    map - a mapping of SQL type names to Java classes
    
    Returns:
    
    an array containing the ordered attribute values
    
    Throws:
    
    SQLException - if a database access error occurs
    
    SQLFeatureNotSupportedException - if the JDBC driver does not support this method
    
    Since:
    
    1.2

Java Module java.sql Package java.sql Interface Struct（JDK11）

Interface Struct

Method Summary

Method Detail

getSQLTypeName

getAttributes

getAttributes