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/*
* Copyright (c) 2005, 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.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 unwrap(Class 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);
}
}
}
