home *** CD-ROM | disk | FTP | other *** search
Java Source | 1997-05-20 | 7.0 KB | 227 lines |
- /*
- * @(#)ResultSetMetaData.java 1.5 97/02/11
- *
- * Copyright (c) 1995, 1996 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the confidential and proprietary information of Sun
- * Microsystems, Inc. ("Confidential Information"). You shall not
- * disclose such Confidential Information and shall use it only in
- * accordance with the terms of the license agreement you entered into
- * with Sun.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
- * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
- * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
- * THIS SOFTWARE OR ITS DERIVATIVES.
- *
- * CopyrightVersion 1.1_beta
- *
- */
-
- package java.sql;
-
- /**
- * A ResultSetMetaData object can be used to find out about the types
- * and properties of the columns in a ResultSet.
- */
-
- public interface ResultSetMetaData {
-
- /**
- * What's the number of columns in the ResultSet?
- *
- * @return the number
- * @exception SQLException if a database-access error occurs.
- */
- int getColumnCount() throws SQLException;
-
- /**
- * Is the column automatically numbered, thus read-only?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isAutoIncrement(int column) throws SQLException;
-
- /**
- * Does a column's case matter?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isCaseSensitive(int column) throws SQLException;
-
- /**
- * Can the column be used in a where clause?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isSearchable(int column) throws SQLException;
-
- /**
- * Is the column a cash value?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isCurrency(int column) throws SQLException;
-
- /**
- * Can you put a NULL in this column?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return columnNoNulls, columnNullable or columnNullableUnknown
- * @exception SQLException if a database-access error occurs.
- */
- int isNullable(int column) throws SQLException;
-
- /**
- * Does not allow NULL values.
- */
- int columnNoNulls = 0;
-
- /**
- * Allows NULL values.
- */
- int columnNullable = 1;
-
- /**
- * Nullability unknown.
- */
- int columnNullableUnknown = 2;
-
- /**
- * Is the column a signed number?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isSigned(int column) throws SQLException;
-
- /**
- * What's the column's normal max width in chars?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return max width
- * @exception SQLException if a database-access error occurs.
- */
- int getColumnDisplaySize(int column) throws SQLException;
-
- /**
- * What's the suggested column title for use in printouts and
- * displays?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- String getColumnLabel(int column) throws SQLException;
-
- /**
- * What's a column's name?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return column name
- * @exception SQLException if a database-access error occurs.
- */
- String getColumnName(int column) throws SQLException;
-
- /**
- * What's a column's table's schema?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return schema name or "" if not applicable
- * @exception SQLException if a database-access error occurs.
- */
- String getSchemaName(int column) throws SQLException;
-
- /**
- * What's a column's number of decimal digits?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return precision
- * @exception SQLException if a database-access error occurs.
- */
- int getPrecision(int column) throws SQLException;
-
- /**
- * What's a column's number of digits to right of the decimal point?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return scale
- * @exception SQLException if a database-access error occurs.
- */
- int getScale(int column) throws SQLException;
-
- /**
- * What's a column's table name?
- *
- * @return table name or "" if not applicable
- * @exception SQLException if a database-access error occurs.
- */
- String getTableName(int column) throws SQLException;
-
- /**
- * What's a column's table's catalog name?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return column name or "" if not applicable.
- * @exception SQLException if a database-access error occurs.
- */
- String getCatalogName(int column) throws SQLException;
-
- /**
- * What's a column's SQL type?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return SQL type
- * @exception SQLException if a database-access error occurs.
- * @see Types
- */
- int getColumnType(int column) throws SQLException;
-
- /**
- * What's a column's data source specific type name?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return type name
- * @exception SQLException if a database-access error occurs.
- */
- String getColumnTypeName(int column) throws SQLException;
-
- /**
- * Is a column definitely not writable?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isReadOnly(int column) throws SQLException;
-
- /**
- * Is it possible for a write on the column to succeed?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isWritable(int column) throws SQLException;
-
- /**
- * Will a write on the column definitely succeed?
- *
- * @param column the first column is 1, the second is 2, ...
- * @return true if so
- * @exception SQLException if a database-access error occurs.
- */
- boolean isDefinitelyWritable(int column) throws SQLException;
- }
-