/**
* Returns the fully-qualified name of the Java class whose instances are manufactured if the
* method <code>ResultSet.getObject</code> is called to retrieve a value from the column. <code>
* ResultSet.getObject</code> may return a subclass of the class returned by this method.
*
* @param column the first column is 1, the second is 2, ...
* @return the fully-qualified name of the class in the Java programming language that would be
* used by the method <code>ResultSet.getObject</code> to retrieve the value in the specified
* column. This is the class name used for custom mapping.
* @exception SQLException if a database access error occurs
*/
public String getColumnClassName(int column) throws SQLException {
Field field = getField(column);
String result = connection.getTypeInfo().getJavaClass(field.getOID());
if (result != null) return result;
int sqlType = getSQLType(column);
switch (sqlType) {
case Types.ARRAY:
return ("java.sql.Array");
default:
String type = getPGType(column);
if ("unknown".equals(type)) {
return ("java.lang.String");
}
return ("java.lang.Object");
}
}
/*
* Does a column's case matter? ASSUMPTION: Any field that is
* not obviously case insensitive is assumed to be case sensitive
*
* @param column the first column is 1, the second is 2...
* @return true if so
* @exception SQLException if a database access error occurs
*/
public boolean isCaseSensitive(int column) throws SQLException {
Field field = getField(column);
return connection.getTypeInfo().isCaseSensitive(field.getOID());
}
/*
* Is the column automatically numbered (and thus read-only)
* I believe that PostgreSQL does not support this feature.
*
* @param column the first column is 1, the second is 2...
* @return true if so
* @exception SQLException if a database access error occurs
*/
public boolean isAutoIncrement(int column) throws SQLException {
fetchFieldMetaData();
Field field = getField(column);
return field.getAutoIncrement();
}
public String getBaseTableName(int column) throws SQLException {
fetchFieldMetaData();
Field field = getField(column);
return field.getTableName();
}
/*
* What is a column's number of digits to the right of the
* decimal point?
*
* @param column the first column is 1, the second is 2...
* @return the scale
* @exception SQLException if a database access error occurs
*/
public int getScale(int column) throws SQLException {
Field field = getField(column);
return connection.getTypeInfo().getScale(field.getOID(), field.getMod());
}
/*
* @param column the first column is 1, the second is 2, etc.
* @return the column label
* @exception SQLException if a database access error occurs
*/
public String getColumnLabel(int column) throws SQLException {
Field field = getField(column);
return field.getColumnLabel();
}
/*
* Indicates the nullability of values in the designated column.
*
* @param column the first column is 1, the second is 2...
* @return one of the columnNullable values
* @exception SQLException if a database access error occurs
*/
public int isNullable(int column) throws SQLException {
fetchFieldMetaData();
Field field = getField(column);
return field.getNullable();
}
