JdbcTypeJavaClassMappings.java 文件源码

private static ConcurrentHashMap<Class, Integer> buildJdbcJavaClassMappings() {
    ConcurrentHashMap<Class, Integer> jdbcJavaClassMappings = new ConcurrentHashMap<Class, Integer>();

    // these mappings are the ones outlined specifically in the spec
    jdbcJavaClassMappings.put( String.class, Types.VARCHAR );
    jdbcJavaClassMappings.put( BigDecimal.class, Types.NUMERIC );
    jdbcJavaClassMappings.put( Boolean.class, Types.BIT );
    jdbcJavaClassMappings.put( Integer.class, Types.INTEGER );
    jdbcJavaClassMappings.put( Long.class, Types.BIGINT );
    jdbcJavaClassMappings.put( Float.class, Types.REAL );
    jdbcJavaClassMappings.put( Double.class, Types.DOUBLE );
    jdbcJavaClassMappings.put( byte[].class, Types.LONGVARBINARY );
    jdbcJavaClassMappings.put( java.sql.Date.class, Types.DATE );
    jdbcJavaClassMappings.put( Time.class, Types.TIME );
    jdbcJavaClassMappings.put( Timestamp.class, Types.TIMESTAMP );
    jdbcJavaClassMappings.put( Blob.class, Types.BLOB );
    jdbcJavaClassMappings.put( Clob.class, Types.CLOB );
    jdbcJavaClassMappings.put( Array.class, Types.ARRAY );
    jdbcJavaClassMappings.put( Struct.class, Types.STRUCT );
    jdbcJavaClassMappings.put( Ref.class, Types.REF );
    jdbcJavaClassMappings.put( Class.class, Types.JAVA_OBJECT );

    // additional "common sense" registrations
    jdbcJavaClassMappings.put( Character.class, Types.CHAR );
    jdbcJavaClassMappings.put( char[].class, Types.VARCHAR );
    jdbcJavaClassMappings.put( Character[].class, Types.VARCHAR );
    jdbcJavaClassMappings.put( Byte[].class, Types.LONGVARBINARY );
    jdbcJavaClassMappings.put( java.util.Date.class, Types.TIMESTAMP );
    jdbcJavaClassMappings.put( Calendar.class, Types.TIMESTAMP );

    return jdbcJavaClassMappings;
}