/*
* Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
*
* 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.jdbc;
import java.sql.
ParameterMetaData;
import java.sql.
SQLException;
import com.mysql.cj.
Messages;
import com.mysql.cj.
MysqlType;
import com.mysql.cj.
Session;
import com.mysql.cj.exceptions.
ExceptionInterceptor;
import com.mysql.cj.exceptions.
MysqlErrorNumbers;
import com.mysql.cj.jdbc.exceptions.
SQLError;
import com.mysql.cj.jdbc.result.
ResultSetMetaData;
import com.mysql.cj.result.
Field;
public class
MysqlParameterMetadata implements
ParameterMetaData {
boolean
returnSimpleMetadata = false;
ResultSetMetaData metadata = null;
int
parameterCount = 0;
private
ExceptionInterceptor exceptionInterceptor;
public
MysqlParameterMetadata(
Session session,
Field[]
fieldInfo, int
parameterCount,
ExceptionInterceptor exceptionInterceptor) {
this.
metadata = new
ResultSetMetaData(
session,
fieldInfo, false, true,
exceptionInterceptor);
this.
parameterCount =
parameterCount;
this.
exceptionInterceptor =
exceptionInterceptor;
}
/**
* Used for "fake" basic metadata for client-side prepared statements when
* we don't know the parameter types.
*
* @param count
* parameters number
*/
MysqlParameterMetadata(int
count) {
this.
parameterCount =
count;
this.
returnSimpleMetadata = true;
}
@
Override
public int
getParameterCount() throws
SQLException {
return this.
parameterCount;
}
@
Override
public int
isNullable(int
arg0) throws
SQLException {
checkAvailable();
return this.
metadata.
isNullable(
arg0);
}
private void
checkAvailable() throws
SQLException {
if (this.
metadata == null || this.
metadata.
getFields() == null) {
throw
SQLError.
createSQLException(
Messages.
getString("MysqlParameterMetadata.0"),
MysqlErrorNumbers.
SQL_STATE_DRIVER_NOT_CAPABLE,
this.
exceptionInterceptor);
}
}
@
Override
public boolean
isSigned(int
arg0) throws
SQLException {
if (this.
returnSimpleMetadata) {
checkBounds(
arg0);
return false;
}
checkAvailable();
return (this.
metadata.
isSigned(
arg0));
}
@
Override
public int
getPrecision(int
arg0) throws
SQLException {
if (this.
returnSimpleMetadata) {
checkBounds(
arg0);
return 0;
}
checkAvailable();
return (this.
metadata.
getPrecision(
arg0));
}
@
Override
public int
getScale(int
arg0) throws
SQLException {
if (this.
returnSimpleMetadata) {
checkBounds(
arg0);
return 0;
}
checkAvailable();
return (this.
metadata.
getScale(
arg0));
}
@
Override
public int
getParameterType(int
arg0) throws
SQLException {
if (this.
returnSimpleMetadata) {
checkBounds(
arg0);
return
MysqlType.
VARCHAR.
getJdbcType();
}
checkAvailable();
return (this.
metadata.
getColumnType(
arg0));
}
@
Override
public
String getParameterTypeName(int
arg0) throws
SQLException {
if (this.
returnSimpleMetadata) {
checkBounds(
arg0);
return
MysqlType.
VARCHAR.
getName();
}
checkAvailable();
return (this.
metadata.
getColumnTypeName(
arg0));
}
@
Override
public
String getParameterClassName(int
arg0) throws
SQLException {
if (this.
returnSimpleMetadata) {
checkBounds(
arg0);
return "java.lang.String";
}
checkAvailable();
return (this.
metadata.
getColumnClassName(
arg0));
}
@
Override
public int
getParameterMode(int
arg0) throws
SQLException {
return
parameterModeIn;
}
private void
checkBounds(int
paramNumber) throws
SQLException {
if (
paramNumber < 1) {
throw
SQLError.
createSQLException(
Messages.
getString("MysqlParameterMetadata.1", new
Object[] {
paramNumber }),
MysqlErrorNumbers.
SQL_STATE_ILLEGAL_ARGUMENT, this.
exceptionInterceptor);
}
if (
paramNumber > this.
parameterCount) {
throw
SQLError.
createSQLException(
Messages.
getString("MysqlParameterMetadata.2", new
Object[] {
paramNumber, this.
parameterCount }),
MysqlErrorNumbers.
SQL_STATE_ILLEGAL_ARGUMENT, this.
exceptionInterceptor);
}
}
@
Override
public boolean
isWrapperFor(
Class<?>
iface) throws
SQLException {
// This works for classes that aren't actually wrapping anything
return
iface.
isInstance(this);
}
@
Override
public <T> T
unwrap(
Class<T>
iface) throws
SQLException {
try {
// This works for classes that aren't actually wrapping anything
return
iface.
cast(this);
} catch (
ClassCastException cce) {
throw
SQLError.
createSQLException(
Messages.
getString("Common.UnableToUnwrap", new
Object[] {
iface.
toString() }),
MysqlErrorNumbers.
SQL_STATE_ILLEGAL_ARGUMENT, this.
exceptionInterceptor);
}
}
}