/* * Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/
package java.sql;
/** * The output stream for writing the attributes of a user-defined * type back to the database. This interface, used * only for custom mapping, is used by the driver, and its * methods are never directly invoked by a programmer. * <p>When an object of a class implementing the interface * {@code SQLData} is passed as an argument to an SQL statement, the * JDBC driver calls the method {@code SQLData.getSQLType} to * determine the kind of SQL * datum being passed to the database. * The driver then creates an instance of {@code SQLOutput} and * passes it to the method {@code SQLData.writeSQL}. * The method {@code writeSQL} in turn calls the * appropriate {@code SQLOutput} <i>writer</i> methods * {@code writeBoolean}, {@code writeCharacterStream}, and so on) * to write data from the {@code SQLData} object to * the {@code SQLOutput} output stream as the * representation of an SQL user-defined type. * @since 1.2
*/
publicinterface SQLOutput {
//================================================================ // Methods for writing attributes to the stream of SQL data. // These methods correspond to the column-accessor methods of // java.sql.ResultSet. //================================================================
/** * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeString(String x) throws SQLException;
/** * Writes the next attribute to the stream as a Java boolean. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeBoolean(boolean x) throws SQLException;
/** * Writes the next attribute to the stream as a Java byte. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeByte(byte x) throws SQLException;
/** * Writes the next attribute to the stream as a Java short. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeShort(short x) throws SQLException;
/** * Writes the next attribute to the stream as a Java int. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeInt(int x) throws SQLException;
/** * Writes the next attribute to the stream as a Java long. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeLong(long x) throws SQLException;
/** * Writes the next attribute to the stream as a Java float. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeFloat(float x) throws SQLException;
/** * Writes the next attribute to the stream as a Java double. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeDouble(double x) throws SQLException;
/** * Writes the next attribute to the stream as a java.math.BigDecimal object. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeBigDecimal(java.math.BigDecimal x) throws SQLException;
/** * Writes the next attribute to the stream as an array of bytes. * Writes the next attribute to the stream as a {@code String} * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeBytes(byte[] x) throws SQLException;
/** * Writes the next attribute to the stream as a java.sql.Date object. * Writes the next attribute to the stream as a {@code java.sql.Date} object * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeDate(java.sql.Date x) throws SQLException;
/** * Writes the next attribute to the stream as a java.sql.Time object. * Writes the next attribute to the stream as a {@code java.sql.Date} object * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeTime(java.sql.Time x) throws SQLException;
/** * Writes the next attribute to the stream as a java.sql.Timestamp object. * Writes the next attribute to the stream as a {@code java.sql.Date} object * in the Java programming language. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeTimestamp(java.sql.Timestamp x) throws SQLException;
/** * Writes the next attribute to the stream as a stream of Unicode characters. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeCharacterStream(java.io.Reader x) throws SQLException;
/** * Writes the next attribute to the stream as a stream of ASCII characters. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeAsciiStream(java.io.InputStream x) throws SQLException;
/** * Writes the next attribute to the stream as a stream of uninterpreted * bytes. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeBinaryStream(java.io.InputStream x) throws SQLException;
//================================================================ // Methods for writing items of SQL user-defined types to the stream. // These methods pass objects to the database as values of SQL // Structured Types, Distinct Types, Constructed Types, and Locator // Types. They decompose the Java object(s) and write leaf data // items using the methods above. //================================================================
/** * Writes to the stream the data contained in the given * {@code SQLData} object. * When the {@code SQLData} object is {@code null}, this * method writes an SQL {@code NULL} to the stream. * Otherwise, it calls the {@code SQLData.writeSQL} * method of the given object, which * writes the object's attributes to the stream. * The implementation of the method {@code SQLData.writeSQL} * calls the appropriate {@code SQLOutput} writer method(s) * for writing each of the object's attributes in order. * The attributes must be read from an {@code SQLInput} * input stream and written to an {@code SQLOutput} * output stream in the same order in which they were * listed in the SQL definition of the user-defined type. * * @param x the object representing data of an SQL structured or * distinct type * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeObject(SQLData x) throws SQLException;
/** * Writes an SQL {@code REF} value to the stream. * * @param x a {@code Ref} object representing data of an SQL * {@code REF} value * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeRef(Ref x) throws SQLException;
/** * Writes an SQL {@code BLOB} value to the stream. * * @param x a {@code Blob} object representing data of an SQL * {@code BLOB} value * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeBlob(Blob x) throws SQLException;
/** * Writes an SQL {@code CLOB} value to the stream. * * @param x a {@code Clob} object representing data of an SQL * {@code CLOB} value * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeClob(Clob x) throws SQLException;
/** * Writes an SQL structured type value to the stream. * * @param x a {@code Struct} object representing data of an SQL * structured type * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeStruct(Struct x) throws SQLException;
/** * Writes an SQL {@code ARRAY} value to the stream. * * @param x an {@code Array} object representing data of an SQL * {@code ARRAY} type * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.2
*/ void writeArray(Array x) throws SQLException;
/** * Writes a SQL {@code DATALINK} value to the stream. * * @param x a {@code java.net.URL} object representing the data * of SQL DATALINK type * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.4
*/ void writeURL(java.net.URL x) throws SQLException;
/** * Writes the next attribute to the stream as a {@code String} * in the Java programming language. The driver converts this to a * SQL {@code NCHAR} or * {@code NVARCHAR} or {@code LONGNVARCHAR} value * (depending on the argument's * size relative to the driver's limits on {@code NVARCHAR} values) * when it sends it to the stream. * * @param x the value to pass to the database * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.6
*/ void writeNString(String x) throws SQLException;
/** * Writes an SQL {@code NCLOB} value to the stream. * * @param x a {@code NClob} object representing data of an SQL * {@code NCLOB} value * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.6
*/ void writeNClob(NClob x) throws SQLException;
/** * Writes an SQL {@code ROWID} value to the stream. * * @param x a {@code RowId} object representing data of an SQL * {@code ROWID} value * * @throws SQLException if a database access error occurs * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.6
*/ void writeRowId(RowId x) throws SQLException;
/** * Writes an SQL {@code XML} value to the stream. * * @param x a {@code SQLXML} object representing data of an SQL * {@code XML} value * * @throws SQLException if a database access error occurs, * the {@code java.xml.transform.Result}, * {@code Writer} or {@code OutputStream} has not been closed for the {@code SQLXML} object or * if there is an error processing the XML value. The {@code getCause} method * of the exception may provide a more detailed exception, for example, if the * stream does not contain valid XML. * @throws SQLFeatureNotSupportedException if the JDBC driver does not support * this method * @since 1.6
*/ void writeSQLXML(SQLXML x) throws SQLException;
/** * Writes to the stream the data contained in the given object. The * object will be converted to the specified targetSqlType * before being sent to the stream. *<p> * When the {@code object} is {@code null}, this * method writes an SQL {@code NULL} to the stream. * <p> * If the object has a custom mapping (is of a class implementing the * interface {@code SQLData}), * the JDBC driver should call the method {@code SQLData.writeSQL} to * write it to the SQL data stream. * If, on the other hand, the object is of a class implementing * {@code Ref}, {@code Blob}, {@code Clob}, {@code NClob}, * {@code Struct}, {@code java.net.URL}, * or {@code Array}, the driver should pass it to the database as a * value of the corresponding SQL type. *<P> * The default implementation will throw {@code SQLFeatureNotSupportedException} * * @param x the object containing the input parameter value * @param targetSqlType the SQL type to be sent to the database. * @throws SQLException if a database access error occurs or * if the Java Object specified by x is an InputStream * or Reader object and the value of the scale parameter is less * than zero * @throws SQLFeatureNotSupportedException if * the JDBC driver does not support this data type * @see JDBCType * @see SQLType * @since 1.8
*/ defaultvoid writeObject(Object x, SQLType targetSqlType) throws SQLException { thrownew SQLFeatureNotSupportedException();
}
}
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