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Java Source | 1998-03-20 | 6.4 KB | 219 lines |
- /*
- * @(#)ResultSetMetaData.java 1.10 98/03/18
- *
- * Copyright 1996-1998 by Sun Microsystems, Inc.,
- * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
- * 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.
- */
-
- 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;
- }
-