com.microsoft.sqlserver.jdbc.StreamTabName Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of mssql-jdbc Show documentation
Show all versions of mssql-jdbc Show documentation
Microsoft JDBC Driver for SQL Server.
/*
* Microsoft JDBC Driver for SQL Server Copyright(c) Microsoft Corporation All rights reserved. This program is made
* available under the terms of the MIT License. See the LICENSE file in the project root for more information.
*/
package com.microsoft.sqlserver.jdbc;
/**
* StreamTabName interprets the data stream from a TABNAME TDS token
*
*/
final class StreamTabName extends StreamPacket {
private TDSReader tdsReader;
private TDSReaderMark tableNamesMark;
StreamTabName() {
super(TDS.TDS_TABNAME);
}
void setFromTDS(TDSReader tdsReader) throws SQLServerException {
if (TDS.TDS_TABNAME != tdsReader.readUnsignedByte())
assert false : "Not a TABNAME token";
this.tdsReader = tdsReader;
int tokenLength = tdsReader.readUnsignedShort();
tableNamesMark = tdsReader.mark();
tdsReader.skip(tokenLength);
}
void applyTo(Column[] columns, int numTables) throws SQLServerException {
TDSReaderMark currentMark = tdsReader.mark();
tdsReader.reset(tableNamesMark);
// Read in all of the multi-part table names. The number of table
// names to expect is determined in advance. It is computed as a side
// effect of processing the COLINFO token that preceds this TABNAME token.
SQLIdentifier[] tableNames = new SQLIdentifier[numTables];
for (int i = 0; i < numTables; i++)
tableNames[i] = tdsReader.readSQLIdentifier();
// Apply the table names to their appropriate columns
for (Column col : columns) {
if (col.getTableNum() > 0)
col.setTableName(tableNames[col.getTableNum() - 1]);
}
tdsReader.reset(currentMark);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy