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/*
* Copyright (c) 2016, 2020, Oracle and/or its affiliates.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program 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 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.protocol;
/**
* Represents protocol specific result set,
* eg., for native protocol, a ProtocolText::Resultset or ProtocolBinary::Resultset entity.
*
* See:
* http://dev.mysql.com/doc/internals/en/com-query-response.html#packet-ProtocolText::Resultset
* http://dev.mysql.com/doc/internals/en/binary-protocol-resultset.html
*
*/
public interface Resultset extends ProtocolEntity {
public enum Concurrency {
/**
* The constant indicating the concurrency mode for a
* Resultset object that may NOT be updated.
*/
READ_ONLY(java.sql.ResultSet.CONCUR_READ_ONLY),
/**
* The constant indicating the concurrency mode for a
* Resultset object that may be updated.
*/
UPDATABLE(java.sql.ResultSet.CONCUR_UPDATABLE);
private int value;
private Concurrency(int jdbcRsConcur) {
this.value = jdbcRsConcur;
}
public int getIntValue() {
return this.value;
}
public static Concurrency fromValue(int concurMode, Concurrency backupValue) {
for (Concurrency c : values()) {
if (c.getIntValue() == concurMode) {
return c;
}
}
return backupValue;
}
}
public enum Type {
/**
* The constant indicating the type for a Resultset object
* whose cursor may move only forward.
*/
FORWARD_ONLY(java.sql.ResultSet.TYPE_FORWARD_ONLY),
/**
* The constant indicating the type for a Resultset object
* that is scrollable but generally not sensitive to changes to the data
* that underlies the Resultset.
*/
SCROLL_INSENSITIVE(java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE),
/**
* The constant indicating the type for a Resultset object
* that is scrollable and generally sensitive to changes to the data
* that underlies the Resultset.
*/
SCROLL_SENSITIVE(java.sql.ResultSet.TYPE_SCROLL_SENSITIVE);
private int value;
private Type(int jdbcRsType) {
this.value = jdbcRsType;
}
public int getIntValue() {
return this.value;
}
public static Type fromValue(int rsType, Type backupValue) {
for (Type t : values()) {
if (t.getIntValue() == rsType) {
return t;
}
}
return backupValue;
}
}
/**
* Sometimes the driver doesn't have metadata before consuming the result set rows (because it's cached),
* or need to coerce the metadata returned by queries into that required by the particular specification
* (eg metadata returned by metadata queries into that required by the JDBC specification).
* So it can call this to set it after the fact.
*
* @param metadata
* field-level metadata for the result set
*/
void setColumnDefinition(ColumnDefinition metadata);
ColumnDefinition getColumnDefinition();
/**
* Does the result set contain rows, or is it the result of a DDL or DML statement?
*
* @return true if result set contains rows
*/
boolean hasRows();
ResultsetRows getRows();
/**
* Set metadata of this Resultset to ResultsetRows it contains.
*/
void initRowsWithMetadata();
/**
* The id (used when profiling) to identify us
*
* @return result id
*/
int getResultId();
/**
* @param nextResultset
* Sets the next result set in the result set chain for multiple result sets.
*/
void setNextResultset(Resultset nextResultset);
/**
* Returns the next ResultSet in a multi-resultset "chain", if any,
* null if none exists.
*
* @return the next Resultset
*/
Resultset getNextResultset();
/**
* Clears the reference to the next result set in a multi-result set
* "chain".
*/
void clearNextResultset();
/**
* Returns the update count for this result set (if one exists), otherwise
* -1.
*
* @return return the update count for this result set (if one exists), otherwise
* -1.
*/
long getUpdateCount();
/**
* Returns the AUTO_INCREMENT value for the DDL/DML statement which created
* this result set.
*
* @return the AUTO_INCREMENT value for the DDL/DML statement which created
* this result set.
*/
long getUpdateID();
/**
* Returns the server informational message returned from a DDL or DML
* statement (if any), or null if none.
*
* @return the server informational message
*/
String getServerInfo();
}
